10-Q Filing

MERCK & CO., INC. CIK: 310158 Q2 2025

Filing Information

Form Type	10-Q
Accession Number	`0000310158-25-000014`
Period End Date	20250630
Filing Date	20250805
Fiscal Year	2025
Fiscal Period	Q2
XBRL Instance	mrk-20250630_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 160 Income Statement 112 Cash Flow Statement 136 Comprehensive Income 48

Balance Sheet 160 line items

Line Item	Tag	Value	Unit	Period
Allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$89.00M	USD	Point-in-time
Allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$89.00M	USD	Point-in-time
Allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$94.00M	USD	Point-in-time
Allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$94.00M	USD	Point-in-time
Inventories classified in other assets	`InventoryNoncurrent`	$4.19B	USD	Point-in-time
Inventories classified in other assets	`InventoryNoncurrent`	$4.19B	USD	Point-in-time
Inventories classified in other assets	`InventoryNoncurrent`	$4.88B	USD	Point-in-time
Inventories classified in other assets	`InventoryNoncurrent`	$4.88B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$8.01B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$8.01B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$19.16B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$19.16B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$13.24B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$13.24B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$20.26B	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$20.26B	USD	Point-in-time
Short-term investments	`MarketableSecuritiesCurrent`	$615.00M	USD	Point-in-time
Short-term investments	`MarketableSecuritiesCurrent`	$615.00M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.50	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.50	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.50	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.50	USD	Point-in-time
Short-term investments	`MarketableSecuritiesCurrent`	$447.00M	USD	Point-in-time
Short-term investments	`MarketableSecuritiesCurrent`	$447.00M	USD	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	6.50B	shares	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	6.50B	shares	Point-in-time
Accounts receivable (net of allowance for doubtful accounts of $94 in 2025 and $89 in 2024)	`AccountsReceivableNetCurrent`	$10.28B	USD	Point-in-time
Accounts receivable (net of allowance for doubtful accounts of $94 in 2025 and $89 in 2024)	`AccountsReceivableNetCurrent`	$10.28B	USD	Point-in-time
Accounts receivable (net of allowance for doubtful accounts of $94 in 2025 and $89 in 2024)	`AccountsReceivableNetCurrent`	$11.85B	USD	Point-in-time
Accounts receivable (net of allowance for doubtful accounts of $94 in 2025 and $89 in 2024)	`AccountsReceivableNetCurrent`	$11.85B	USD	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	6.50B	shares	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	6.50B	shares	Point-in-time
Inventories (excludes inventories of $4,882 in 2025 and $4,193 in 2024 classified in Other assets - see Note 6)	`InventoryNet`	$6.11B	USD	Point-in-time
Inventories (excludes inventories of $4,882 in 2025 and $4,193 in 2024 classified in Other assets - see Note 6)	`InventoryNet`	$6.11B	USD	Point-in-time
Inventories (excludes inventories of $4,882 in 2025 and $4,193 in 2024 classified in Other assets - see Note 6)	`InventoryNet`	$6.60B	USD	Point-in-time
Inventories (excludes inventories of $4,882 in 2025 and $4,193 in 2024 classified in Other assets - see Note 6)	`InventoryNet`	$6.60B	USD	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	3.58B	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	3.58B	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	3.58B	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	3.58B	shares	Point-in-time
Other current assets	`OtherAssetsCurrent`	$8.71B	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$8.71B	USD	Point-in-time
Treasury stock (in shares)	`TreasuryStockCommonShares`	1.07B	shares	Point-in-time
Treasury stock (in shares)	`TreasuryStockCommonShares`	1.07B	shares	Point-in-time
Other current assets	`OtherAssetsCurrent`	$10.00B	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$10.00B	USD	Point-in-time
Treasury stock (in shares)	`TreasuryStockCommonShares`	1.05B	shares	Point-in-time
Treasury stock (in shares)	`TreasuryStockCommonShares`	1.05B	shares	Point-in-time
Total current assets	`AssetsCurrent`	$38.78B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$38.78B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$37.06B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$37.06B	USD	Point-in-time
Investments	`MarketableSecuritiesNoncurrent`	$463.00M	USD	Point-in-time
Investments	`MarketableSecuritiesNoncurrent`	$463.00M	USD	Point-in-time
Investments	`MarketableSecuritiesNoncurrent`	$774.00M	USD	Point-in-time
Investments	`MarketableSecuritiesNoncurrent`	$774.00M	USD	Point-in-time
Property, Plant and Equipment, at cost, net of accumulated depreciation of $20,256 in 2025 and $19,155 in 2024	`PropertyPlantAndEquipmentNet`	$23.78B	USD	Point-in-time
Property, Plant and Equipment, at cost, net of accumulated depreciation of $20,256 in 2025 and $19,155 in 2024	`PropertyPlantAndEquipmentNet`	$23.78B	USD	Point-in-time
Property, Plant and Equipment, at cost, net of accumulated depreciation of $20,256 in 2025 and $19,155 in 2024	`PropertyPlantAndEquipmentNet`	$25.24B	USD	Point-in-time
Property, Plant and Equipment, at cost, net of accumulated depreciation of $20,256 in 2025 and $19,155 in 2024	`PropertyPlantAndEquipmentNet`	$25.24B	USD	Point-in-time
Goodwill	`Goodwill`	$21.67B	USD	Point-in-time
Goodwill	`Goodwill`	$21.67B	USD	Point-in-time
Goodwill	`Goodwill`	$21.59B	USD	Point-in-time
Goodwill	`Goodwill`	$21.59B	USD	Point-in-time
Other Intangibles, Net	`IntangibleAssetsNetExcludingGoodwill`	$15.19B	USD	Point-in-time
Other Intangibles, Net	`IntangibleAssetsNetExcludingGoodwill`	$15.19B	USD	Point-in-time
Other Intangibles, Net	`IntangibleAssetsNetExcludingGoodwill`	$16.37B	USD	Point-in-time
Other Intangibles, Net	`IntangibleAssetsNetExcludingGoodwill`	$16.37B	USD	Point-in-time
Other Assets	`OtherAssetsNoncurrent`	$16.04B	USD	Point-in-time
Other Assets	`OtherAssetsNoncurrent`	$16.04B	USD	Point-in-time
Other Assets	`OtherAssetsNoncurrent`	$17.66B	USD	Point-in-time
Other Assets	`OtherAssetsNoncurrent`	$17.66B	USD	Point-in-time
Total Assets	`Assets`	$117.11B	USD	Point-in-time
Total Assets	`Assets`	$117.11B	USD	Point-in-time
Total Assets	`Assets`	$117.52B	USD	Point-in-time
Total Assets	`Assets`	$117.52B	USD	Point-in-time
Loans payable and current portion of long-term debt	`DebtCurrent`	$1.43B	USD	Point-in-time
Loans payable and current portion of long-term debt	`DebtCurrent`	$1.43B	USD	Point-in-time
Loans payable and current portion of long-term debt	`DebtCurrent`	$2.65B	USD	Point-in-time
Loans payable and current portion of long-term debt	`DebtCurrent`	$2.65B	USD	Point-in-time
Trade accounts payable	`AccountsPayableCurrent`	$4.08B	USD	Point-in-time
Trade accounts payable	`AccountsPayableCurrent`	$4.08B	USD	Point-in-time
Trade accounts payable	`AccountsPayableCurrent`	$3.89B	USD	Point-in-time
Trade accounts payable	`AccountsPayableCurrent`	$3.89B	USD	Point-in-time
Accrued and other current liabilities	`OtherLiabilitiesCurrent`	$14.50B	USD	Point-in-time
Accrued and other current liabilities	`OtherLiabilitiesCurrent`	$14.50B	USD	Point-in-time
Accrued and other current liabilities	`OtherLiabilitiesCurrent`	$15.69B	USD	Point-in-time
Accrued and other current liabilities	`OtherLiabilitiesCurrent`	$15.69B	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$3.91B	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$3.91B	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$4.16B	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$4.16B	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$2.05B	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$2.05B	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$2.08B	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$2.08B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$26.04B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$26.04B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$28.42B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$28.42B	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$34.46B	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$34.46B	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$33.97B	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$33.97B	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$1.43B	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$1.43B	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$1.39B	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$1.39B	USD	Point-in-time
Other Noncurrent Liabilities	`OtherLiabilitiesNoncurrent`	$6.46B	USD	Point-in-time
Other Noncurrent Liabilities	`OtherLiabilitiesNoncurrent`	$6.46B	USD	Point-in-time
Other Noncurrent Liabilities	`OtherLiabilitiesNoncurrent`	$7.03B	USD	Point-in-time
Other Noncurrent Liabilities	`OtherLiabilitiesNoncurrent`	$7.03B	USD	Point-in-time
Common stock, $0.50 par value Authorized - 6,500,000,000 shares Issued - 3,577,103,522 shares in 2025 and 2024	`CommonStockValue`	$1.79B	USD	Point-in-time
Common stock, $0.50 par value Authorized - 6,500,000,000 shares Issued - 3,577,103,522 shares in 2025 and 2024	`CommonStockValue`	$1.79B	USD	Point-in-time
Common stock, $0.50 par value Authorized - 6,500,000,000 shares Issued - 3,577,103,522 shares in 2025 and 2024	`CommonStockValue`	$1.79B	USD	Point-in-time
Common stock, $0.50 par value Authorized - 6,500,000,000 shares Issued - 3,577,103,522 shares in 2025 and 2024	`CommonStockValue`	$1.79B	USD	Point-in-time
Other paid-in capital	`AdditionalPaidInCapitalCommonStock`	$44.64B	USD	Point-in-time
Other paid-in capital	`AdditionalPaidInCapitalCommonStock`	$44.64B	USD	Point-in-time
Other paid-in capital	`AdditionalPaidInCapitalCommonStock`	$44.70B	USD	Point-in-time
Other paid-in capital	`AdditionalPaidInCapitalCommonStock`	$44.70B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$68.48B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$68.48B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$63.07B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$63.07B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-5.42B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-5.42B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-4.95B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-4.95B	USD	Point-in-time
Stockholders' equity before deduction for treasury stock	`StockholdersEquityBeforeTreasuryStock`	$109.49B	USD	Point-in-time
Stockholders' equity before deduction for treasury stock	`StockholdersEquityBeforeTreasuryStock`	$109.49B	USD	Point-in-time
Stockholders' equity before deduction for treasury stock	`StockholdersEquityBeforeTreasuryStock`	$104.62B	USD	Point-in-time
Stockholders' equity before deduction for treasury stock	`StockholdersEquityBeforeTreasuryStock`	$104.62B	USD	Point-in-time
Less treasury stock, at cost: 1,073,963,194 shares in 2025 and 1,049,466,187 shares in 2024	`TreasuryStockCommonValue`	$60.49B	USD	Point-in-time
Less treasury stock, at cost: 1,073,963,194 shares in 2025 and 1,049,466,187 shares in 2024	`TreasuryStockCommonValue`	$60.49B	USD	Point-in-time
Less treasury stock, at cost: 1,073,963,194 shares in 2025 and 1,049,466,187 shares in 2024	`TreasuryStockCommonValue`	$58.30B	USD	Point-in-time
Less treasury stock, at cost: 1,073,963,194 shares in 2025 and 1,049,466,187 shares in 2024	`TreasuryStockCommonValue`	$58.30B	USD	Point-in-time
Total Merck & Co., Inc. stockholders equity	`StockholdersEquity`	$46.31B	USD	Point-in-time
Total Merck & Co., Inc. stockholders equity	`StockholdersEquity`	$46.31B	USD	Point-in-time
Total Merck & Co., Inc. stockholders equity	`StockholdersEquity`	$48.99B	USD	Point-in-time
Total Merck & Co., Inc. stockholders equity	`StockholdersEquity`	$48.99B	USD	Point-in-time
Noncontrolling Interests	`MinorityInterest`	$67.00M	USD	Point-in-time
Noncontrolling Interests	`MinorityInterest`	$67.00M	USD	Point-in-time
Noncontrolling Interests	`MinorityInterest`	$59.00M	USD	Point-in-time
Noncontrolling Interests	`MinorityInterest`	$59.00M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$37.63B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$37.63B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$40.42B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$40.42B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$46.37B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$46.37B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$49.06B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$49.06B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$48.40B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$48.40B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$43.65B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$43.65B	USD	Point-in-time
Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$117.52B	USD	Point-in-time
Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$117.52B	USD	Point-in-time
Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$117.11B	USD	Point-in-time
Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$117.11B	USD	Point-in-time

Income Statement 112 line items

Line Item	Tag	Value	Unit	Period
Sales	`Revenues`	$31.34B	USD	2 Qtrs
Sales	`Revenues`	$31.34B	USD	2 Qtrs
Sales	`Revenues`	$31.89B	USD	2 Qtrs
Sales	`Revenues`	$31.89B	USD	2 Qtrs
Sales	`Revenues`	$15.81B	USD	1 Quarter
Sales	`Revenues`	$15.81B	USD	1 Quarter
Sales	`Revenues`	$16.11B	USD	1 Quarter
Sales	`Revenues`	$16.11B	USD	1 Quarter
Cost of sales	`CostOfGoodsAndServicesSold`	$3.75B	USD	1 Quarter
Cost of sales	`CostOfGoodsAndServicesSold`	$3.75B	USD	1 Quarter
Cost of sales	`CostOfGoodsAndServicesSold`	$3.56B	USD	1 Quarter
Cost of sales	`CostOfGoodsAndServicesSold`	$3.56B	USD	1 Quarter
Cost of sales	`CostOfGoodsAndServicesSold`	$7.29B	USD	2 Qtrs
Cost of sales	`CostOfGoodsAndServicesSold`	$7.29B	USD	2 Qtrs
Cost of sales	`CostOfGoodsAndServicesSold`	$6.98B	USD	2 Qtrs
Cost of sales	`CostOfGoodsAndServicesSold`	$6.98B	USD	2 Qtrs
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$5.20B	USD	2 Qtrs
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$5.20B	USD	2 Qtrs
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$2.74B	USD	1 Quarter
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$2.74B	USD	1 Quarter
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$5.22B	USD	2 Qtrs
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$5.22B	USD	2 Qtrs
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$2.65B	USD	1 Quarter
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$2.65B	USD	1 Quarter
Research and development	`ResearchAndDevelopmentExpense`	$4.05B	USD	1 Quarter
Research and development	`ResearchAndDevelopmentExpense`	$4.05B	USD	1 Quarter
Research and development	`ResearchAndDevelopmentExpense`	$7.67B	USD	2 Qtrs
Research and development	`ResearchAndDevelopmentExpense`	$7.67B	USD	2 Qtrs
Research and development	`ResearchAndDevelopmentExpense`	$3.50B	USD	1 Quarter
Research and development	`ResearchAndDevelopmentExpense`	$3.50B	USD	1 Quarter
Research and development	`ResearchAndDevelopmentExpense`	$7.49B	USD	2 Qtrs
Research and development	`ResearchAndDevelopmentExpense`	$7.49B	USD	2 Qtrs
Restructuring costs	`RestructuringCharges`	$560.00M	USD	1 Quarter
Restructuring costs	`RestructuringCharges`	$560.00M	USD	1 Quarter
Restructuring costs	`RestructuringCharges`	$629.00M	USD	2 Qtrs
Restructuring costs	`RestructuringCharges`	$629.00M	USD	2 Qtrs
Restructuring costs	`RestructuringCharges`	$80.00M	USD	1 Quarter
Restructuring costs	`RestructuringCharges`	$80.00M	USD	1 Quarter
Restructuring costs	`RestructuringCharges`	$202.00M	USD	2 Qtrs
Restructuring costs	`RestructuringCharges`	$202.00M	USD	2 Qtrs
Other (income) expense, net	`OtherNonoperatingIncomeExpense`	$43.00M	USD	2 Qtrs
Other (income) expense, net	`OtherNonoperatingIncomeExpense`	$43.00M	USD	2 Qtrs
Other (income) expense, net	`OtherNonoperatingIncomeExpense`	$-42.00M	USD	1 Quarter
Other (income) expense, net	`OtherNonoperatingIncomeExpense`	$-42.00M	USD	1 Quarter
Other (income) expense, net	`OtherNonoperatingIncomeExpense`	$7.00M	USD	1 Quarter
Other (income) expense, net	`OtherNonoperatingIncomeExpense`	$7.00M	USD	1 Quarter
Other (income) expense, net	`OtherNonoperatingIncomeExpense`	$-12.00M	USD	2 Qtrs
Other (income) expense, net	`OtherNonoperatingIncomeExpense`	$-12.00M	USD	2 Qtrs
Total Costs, Expenses and Other	`CostsExpensesAndOther`	$20.21B	USD	2 Qtrs
Total Costs, Expenses and Other	`CostsExpensesAndOther`	$20.21B	USD	2 Qtrs
Total Costs, Expenses and Other	`CostsExpensesAndOther`	$10.81B	USD	1 Quarter
Total Costs, Expenses and Other	`CostsExpensesAndOther`	$10.81B	USD	1 Quarter
Total Costs, Expenses and Other	`CostsExpensesAndOther`	$20.43B	USD	2 Qtrs
Total Costs, Expenses and Other	`CostsExpensesAndOther`	$20.43B	USD	2 Qtrs
Total Costs, Expenses and Other	`CostsExpensesAndOther`	$10.11B	USD	1 Quarter
Total Costs, Expenses and Other	`CostsExpensesAndOther`	$10.11B	USD	1 Quarter
Income Before Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$11.68B	USD	2 Qtrs
Income Before Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$11.68B	USD	2 Qtrs
Income Before Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$6.01B	USD	1 Quarter
Income Before Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$6.01B	USD	1 Quarter
Income Before Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$10.90B	USD	2 Qtrs
Income Before Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$10.90B	USD	2 Qtrs
Income Before Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$5.00B	USD	1 Quarter
Income Before Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$5.00B	USD	1 Quarter
Taxes on Income	`IncomeTaxExpenseBenefit`	$1.39B	USD	2 Qtrs
Taxes on Income	`IncomeTaxExpenseBenefit`	$1.39B	USD	2 Qtrs
Taxes on Income	`IncomeTaxExpenseBenefit`	$1.45B	USD	2 Qtrs
Taxes on Income	`IncomeTaxExpenseBenefit`	$1.45B	USD	2 Qtrs
Taxes on Income	`IncomeTaxExpenseBenefit`	$571.00M	USD	1 Quarter
Taxes on Income	`IncomeTaxExpenseBenefit`	$571.00M	USD	1 Quarter
Taxes on Income	`IncomeTaxExpenseBenefit`	$545.00M	USD	1 Quarter
Taxes on Income	`IncomeTaxExpenseBenefit`	$545.00M	USD	1 Quarter
Net Income	`ProfitLoss`	$9.51B	USD	2 Qtrs
Net Income	`ProfitLoss`	$9.51B	USD	2 Qtrs
Net Income	`ProfitLoss`	$10.23B	USD	2 Qtrs
Net Income	`ProfitLoss`	$10.23B	USD	2 Qtrs
Net Income	`ProfitLoss`	$5.46B	USD	1 Quarter
Net Income	`ProfitLoss`	$5.46B	USD	1 Quarter
Net Income	`ProfitLoss`	$4.43B	USD	1 Quarter
Net Income	`ProfitLoss`	$4.43B	USD	1 Quarter
Less: Net Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$8.00M	USD	2 Qtrs
Less: Net Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$8.00M	USD	2 Qtrs
Less: Net Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$6.00M	USD	1 Quarter
Less: Net Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$6.00M	USD	1 Quarter
Less: Net Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Less: Net Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Less: Net Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$11.00M	USD	2 Qtrs
Less: Net Income Attributable to Noncontrolling Interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$11.00M	USD	2 Qtrs
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$9.51B	USD	2 Qtrs
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$9.51B	USD	2 Qtrs
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$4.43B	USD	1 Quarter
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$4.43B	USD	1 Quarter
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$10.22B	USD	2 Qtrs
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$10.22B	USD	2 Qtrs
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$5.46B	USD	1 Quarter
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$5.46B	USD	1 Quarter
Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareBasic`	$3.78	USD	2 Qtrs
Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareBasic`	$3.78	USD	2 Qtrs
Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareBasic`	$4.03	USD	2 Qtrs
Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareBasic`	$4.03	USD	2 Qtrs
Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareBasic`	$2.15	USD	1 Quarter
Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareBasic`	$2.15	USD	1 Quarter
Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareBasic`	$1.76	USD	1 Quarter
Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareBasic`	$1.76	USD	1 Quarter
Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareDiluted`	$3.77	USD	2 Qtrs
Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareDiluted`	$3.77	USD	2 Qtrs
Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareDiluted`	$1.76	USD	1 Quarter
Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareDiluted`	$1.76	USD	1 Quarter
Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareDiluted`	$4.02	USD	2 Qtrs
Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareDiluted`	$4.02	USD	2 Qtrs
Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareDiluted`	$2.14	USD	1 Quarter
Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share)	`EarningsPerShareDiluted`	$2.14	USD	1 Quarter

Cash Flow Statement 136 line items

Line Item	Tag	Value	Unit	Period
Restricted cash	`RestrictedCashAndCashEquivalents`	$69.00M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$69.00M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$68.00M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$68.00M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$66.00M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$66.00M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$76.00M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$76.00M	USD	Point-in-time
Net income	`ProfitLoss`	$9.51B	USD	2 Qtrs
Net income	`ProfitLoss`	$9.51B	USD	2 Qtrs
Net income	`ProfitLoss`	$10.23B	USD	2 Qtrs
Net income	`ProfitLoss`	$10.23B	USD	2 Qtrs
Net income	`ProfitLoss`	$5.46B	USD	1 Quarter
Net income	`ProfitLoss`	$5.46B	USD	1 Quarter
Net income	`ProfitLoss`	$4.43B	USD	1 Quarter
Net income	`ProfitLoss`	$4.43B	USD	1 Quarter
Amortization	`AdjustmentForAmortization`	$1.20B	USD	2 Qtrs
Amortization	`AdjustmentForAmortization`	$1.20B	USD	2 Qtrs
Amortization	`AdjustmentForAmortization`	$1.09B	USD	2 Qtrs
Amortization	`AdjustmentForAmortization`	$1.09B	USD	2 Qtrs
Depreciation	`Depreciation`	$1.02B	USD	2 Qtrs
Depreciation	`Depreciation`	$1.02B	USD	2 Qtrs
Depreciation	`Depreciation`	$1.03B	USD	2 Qtrs
Depreciation	`Depreciation`	$1.03B	USD	2 Qtrs
Income from investments in equity securities, net	`EquitySecuritiesFvNiGainLoss`	$189.00M	USD	2 Qtrs
Income from investments in equity securities, net	`EquitySecuritiesFvNiGainLoss`	$189.00M	USD	2 Qtrs
Income from investments in equity securities, net	`EquitySecuritiesFvNiGainLoss`	$200.00M	USD	2 Qtrs
Income from investments in equity securities, net	`EquitySecuritiesFvNiGainLoss`	$200.00M	USD	2 Qtrs
Income from investments in equity securities, net	`EquitySecuritiesFvNiGainLoss`	$100.00M	USD	1 Quarter
Income from investments in equity securities, net	`EquitySecuritiesFvNiGainLoss`	$100.00M	USD	1 Quarter
Income from investments in equity securities, net	`EquitySecuritiesFvNiGainLoss`	$56.00M	USD	1 Quarter
Income from investments in equity securities, net	`EquitySecuritiesFvNiGainLoss`	$56.00M	USD	1 Quarter
Charge for research and development asset acquisition	`ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationWrittenOff`	$656.00M	USD	2 Qtrs
Charge for research and development asset acquisition	`ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationWrittenOff`	$656.00M	USD	2 Qtrs
Charge for research and development asset acquisition	`ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationWrittenOff`	-	USD	2 Qtrs
Charge for research and development asset acquisition	`ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationWrittenOff`	-	USD	2 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-634.00M	USD	2 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-634.00M	USD	2 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-232.00M	USD	2 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-232.00M	USD	2 Qtrs
Share-based compensation	`ShareBasedCompensation`	$379.00M	USD	2 Qtrs
Share-based compensation	`ShareBasedCompensation`	$379.00M	USD	2 Qtrs
Share-based compensation	`ShareBasedCompensation`	$411.00M	USD	2 Qtrs
Share-based compensation	`ShareBasedCompensation`	$411.00M	USD	2 Qtrs
Other	`OtherNoncashIncomeExpense`	$-444.00M	USD	2 Qtrs
Other	`OtherNoncashIncomeExpense`	$-444.00M	USD	2 Qtrs
Other	`OtherNoncashIncomeExpense`	$-174.00M	USD	2 Qtrs
Other	`OtherNoncashIncomeExpense`	$-174.00M	USD	2 Qtrs
Net changes in assets and liabilities	`IncreaseDecreaseInOperatingCapital`	$5.97B	USD	2 Qtrs
Net changes in assets and liabilities	`IncreaseDecreaseInOperatingCapital`	$5.97B	USD	2 Qtrs
Net changes in assets and liabilities	`IncreaseDecreaseInOperatingCapital`	$4.39B	USD	2 Qtrs
Net changes in assets and liabilities	`IncreaseDecreaseInOperatingCapital`	$4.39B	USD	2 Qtrs
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$8.73B	USD	2 Qtrs
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$8.73B	USD	2 Qtrs
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$5.79B	USD	2 Qtrs
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$5.79B	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$1.65B	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$1.65B	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$2.09B	USD	2 Qtrs
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$2.09B	USD	2 Qtrs
Purchases of securities and other investments	`PaymentsToAcquireInvestments`	$1.21B	USD	2 Qtrs
Purchases of securities and other investments	`PaymentsToAcquireInvestments`	$1.21B	USD	2 Qtrs
Purchases of securities and other investments	`PaymentsToAcquireInvestments`	$64.00M	USD	2 Qtrs
Purchases of securities and other investments	`PaymentsToAcquireInvestments`	$64.00M	USD	2 Qtrs
Proceeds from sales of securities and other investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	$320.00M	USD	2 Qtrs
Proceeds from sales of securities and other investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	$320.00M	USD	2 Qtrs
Proceeds from sales of securities and other investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	$1.06B	USD	2 Qtrs
Proceeds from sales of securities and other investments	`ProceedsFromSaleAndMaturityOfOtherInvestments`	$1.06B	USD	2 Qtrs
Acquisition of Harpoon Therapeutics, Inc., net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$746.00M	USD	2 Qtrs
Acquisition of Harpoon Therapeutics, Inc., net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$746.00M	USD	2 Qtrs
Acquisition of Harpoon Therapeutics, Inc., net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	2 Qtrs
Acquisition of Harpoon Therapeutics, Inc., net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$15.00M	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$15.00M	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$303.00M	USD	2 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$303.00M	USD	2 Qtrs
Net Cash Used in Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.44B	USD	2 Qtrs
Net Cash Used in Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.44B	USD	2 Qtrs
Net Cash Used in Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.26B	USD	2 Qtrs
Net Cash Used in Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.26B	USD	2 Qtrs
Net change in short-term borrowings	`ProceedsFromRepaymentsOfShortTermDebt`	$48.00M	USD	2 Qtrs
Net change in short-term borrowings	`ProceedsFromRepaymentsOfShortTermDebt`	$48.00M	USD	2 Qtrs
Net change in short-term borrowings	`ProceedsFromRepaymentsOfShortTermDebt`	-	USD	2 Qtrs
Net change in short-term borrowings	`ProceedsFromRepaymentsOfShortTermDebt`	-	USD	2 Qtrs
Proceeds from issuance of debt	`ProceedsFromIssuanceOfDebt`	-	USD	2 Qtrs
Proceeds from issuance of debt	`ProceedsFromIssuanceOfDebt`	-	USD	2 Qtrs
Proceeds from issuance of debt	`ProceedsFromIssuanceOfDebt`	$3.60B	USD	2 Qtrs
Proceeds from issuance of debt	`ProceedsFromIssuanceOfDebt`	$3.60B	USD	2 Qtrs
Payments on debt	`RepaymentsOfLongTermDebt`	$751.00M	USD	2 Qtrs
Payments on debt	`RepaymentsOfLongTermDebt`	$751.00M	USD	2 Qtrs
Payments on debt	`RepaymentsOfLongTermDebt`	$2.50B	USD	2 Qtrs
Payments on debt	`RepaymentsOfLongTermDebt`	$2.50B	USD	2 Qtrs
Dividends paid to stockholders	`PaymentsOfDividendsCommonStock`	$3.94B	USD	2 Qtrs
Dividends paid to stockholders	`PaymentsOfDividendsCommonStock`	$3.94B	USD	2 Qtrs
Dividends paid to stockholders	`PaymentsOfDividendsCommonStock`	$4.13B	USD	2 Qtrs
Dividends paid to stockholders	`PaymentsOfDividendsCommonStock`	$4.13B	USD	2 Qtrs
Purchases of treasury stock	`PaymentsForRepurchaseOfCommonStock`	$373.00M	USD	2 Qtrs
Purchases of treasury stock	`PaymentsForRepurchaseOfCommonStock`	$373.00M	USD	2 Qtrs
Purchases of treasury stock	`PaymentsForRepurchaseOfCommonStock`	$2.51B	USD	2 Qtrs
Purchases of treasury stock	`PaymentsForRepurchaseOfCommonStock`	$2.51B	USD	2 Qtrs
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$160.00M	USD	2 Qtrs
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$160.00M	USD	2 Qtrs
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$31.00M	USD	2 Qtrs
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$31.00M	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-298.00M	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-298.00M	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-254.00M	USD	2 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-254.00M	USD	2 Qtrs
Net Cash Used in Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-9.31B	USD	2 Qtrs
Net Cash Used in Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-9.31B	USD	2 Qtrs
Net Cash Used in Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-1.60B	USD	2 Qtrs
Net Cash Used in Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-1.60B	USD	2 Qtrs
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-220.00M	USD	2 Qtrs
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-220.00M	USD	2 Qtrs
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$530.00M	USD	2 Qtrs
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$530.00M	USD	2 Qtrs
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$4.46B	USD	2 Qtrs
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$4.46B	USD	2 Qtrs
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-5.25B	USD	2 Qtrs
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-5.25B	USD	2 Qtrs
Cash, Cash Equivalents and Restricted Cash at Beginning of Year (includes restricted cash of $76 and $68 at January 1, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$11.37B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at Beginning of Year (includes restricted cash of $76 and $68 at January 1, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$11.37B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at Beginning of Year (includes restricted cash of $76 and $68 at January 1, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$8.07B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at Beginning of Year (includes restricted cash of $76 and $68 at January 1, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$8.07B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at Beginning of Year (includes restricted cash of $76 and $68 at January 1, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$6.91B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at Beginning of Year (includes restricted cash of $76 and $68 at January 1, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$6.91B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at Beginning of Year (includes restricted cash of $76 and $68 at January 1, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$13.32B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at Beginning of Year (includes restricted cash of $76 and $68 at January 1, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$13.32B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at End of Period (includes restricted cash of $66 and $69 at June 30, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$11.37B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at End of Period (includes restricted cash of $66 and $69 at June 30, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$11.37B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at End of Period (includes restricted cash of $66 and $69 at June 30, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$8.07B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at End of Period (includes restricted cash of $66 and $69 at June 30, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$8.07B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at End of Period (includes restricted cash of $66 and $69 at June 30, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$6.91B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at End of Period (includes restricted cash of $66 and $69 at June 30, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$6.91B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at End of Period (includes restricted cash of $66 and $69 at June 30, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$13.32B	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash at End of Period (includes restricted cash of $66 and $69 at June 30, 2025 and 2024, respectively, included in Other current assets)	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$13.32B	USD	Point-in-time

Comprehensive Income 48 line items

Line Item	Tag	Value	Unit	Period
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$9.51B	USD	2 Qtrs
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$9.51B	USD	2 Qtrs
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$4.43B	USD	1 Quarter
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$4.43B	USD	1 Quarter
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$10.22B	USD	2 Qtrs
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$10.22B	USD	2 Qtrs
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$5.46B	USD	1 Quarter
Net Income Attributable to Merck & Co., Inc.	`NetIncomeLoss`	$5.46B	USD	1 Quarter
Net unrealized (loss) gain on derivatives, net of reclassifications	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$-410.00M	USD	1 Quarter
Net unrealized (loss) gain on derivatives, net of reclassifications	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$-410.00M	USD	1 Quarter
Net unrealized (loss) gain on derivatives, net of reclassifications	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$197.00M	USD	2 Qtrs
Net unrealized (loss) gain on derivatives, net of reclassifications	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$197.00M	USD	2 Qtrs
Net unrealized (loss) gain on derivatives, net of reclassifications	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$67.00M	USD	1 Quarter
Net unrealized (loss) gain on derivatives, net of reclassifications	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$67.00M	USD	1 Quarter
Net unrealized (loss) gain on derivatives, net of reclassifications	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$-627.00M	USD	2 Qtrs
Net unrealized (loss) gain on derivatives, net of reclassifications	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$-627.00M	USD	2 Qtrs
Benefit plan net loss and prior service cost, net of amortization	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$8.00M	USD	1 Quarter
Benefit plan net loss and prior service cost, net of amortization	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$8.00M	USD	1 Quarter
Benefit plan net loss and prior service cost, net of amortization	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$10.00M	USD	1 Quarter
Benefit plan net loss and prior service cost, net of amortization	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$10.00M	USD	1 Quarter
Benefit plan net loss and prior service cost, net of amortization	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$26.00M	USD	2 Qtrs
Benefit plan net loss and prior service cost, net of amortization	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$26.00M	USD	2 Qtrs
Benefit plan net loss and prior service cost, net of amortization	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$15.00M	USD	2 Qtrs
Benefit plan net loss and prior service cost, net of amortization	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$15.00M	USD	2 Qtrs
Cumulative translation adjustment	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-144.00M	USD	1 Quarter
Cumulative translation adjustment	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-144.00M	USD	1 Quarter
Cumulative translation adjustment	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-38.00M	USD	1 Quarter
Cumulative translation adjustment	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-38.00M	USD	1 Quarter
Cumulative translation adjustment	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-382.00M	USD	2 Qtrs
Cumulative translation adjustment	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-382.00M	USD	2 Qtrs
Cumulative translation adjustment	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$177.00M	USD	2 Qtrs
Cumulative translation adjustment	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$177.00M	USD	2 Qtrs
Other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-456.00M	USD	1 Quarter
Other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-456.00M	USD	1 Quarter
Other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-200.00M	USD	2 Qtrs
Other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-200.00M	USD	2 Qtrs
Other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-87.00M	USD	1 Quarter
Other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-87.00M	USD	1 Quarter
Other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-476.00M	USD	2 Qtrs
Other comprehensive income (loss), net of taxes	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-476.00M	USD	2 Qtrs
Comprehensive Income Attributable to Merck & Co., Inc.	`ComprehensiveIncomeNetOfTax`	$9.03B	USD	2 Qtrs
Comprehensive Income Attributable to Merck & Co., Inc.	`ComprehensiveIncomeNetOfTax`	$9.03B	USD	2 Qtrs
Comprehensive Income Attributable to Merck & Co., Inc.	`ComprehensiveIncomeNetOfTax`	$3.97B	USD	1 Quarter
Comprehensive Income Attributable to Merck & Co., Inc.	`ComprehensiveIncomeNetOfTax`	$3.97B	USD	1 Quarter
Comprehensive Income Attributable to Merck & Co., Inc.	`ComprehensiveIncomeNetOfTax`	$10.02B	USD	2 Qtrs
Comprehensive Income Attributable to Merck & Co., Inc.	`ComprehensiveIncomeNetOfTax`	$10.02B	USD	2 Qtrs
Comprehensive Income Attributable to Merck & Co., Inc.	`ComprehensiveIncomeNetOfTax`	$5.37B	USD	1 Quarter
Comprehensive Income Attributable to Merck & Co., Inc.	`ComprehensiveIncomeNetOfTax`	$5.37B	USD	1 Quarter

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.