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Financial Instruments - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Jan. 31, 2025
Derivative [Line Items] |  |  |  |
Total Swap Notional Amount | $ 38,560 | $ 30,551 |  |
Pretax net unrealized losses on derivatives maturing within the next 12 months estimated to be reclassified from AOCI to sales | (262) |  |  |
Equity investments without readily determinable fair values | 863 | 832 |  |
Unrealized gains recognized on investments in equity securities without readily determinable fair value | 19 | 10 |  |
Unrealized losses recognized on investments in equity securities without readily determinable fair values | 51 | 61 |  |
Cumulative upward price adjustment | 309 |  |  |
Cumulative downward price adjustment | 107 |  |  |
(Income) loss from investments in equity securities, net | (14) | (340) | $ 1,419 |
Payments of contingent consideration | 151 | 117 |  |
Fair value of loans payable and long-term debt, including current portion | 32,600 | 32,000 |  |
Debt, carrying amount | 37,100 | 35,100 |  |
Factored accounts receivable | 2,100 | 3,000 |  |
Cash collateral received from counterparties | $ 165 | 3 |  |
5.00% notes due 2053 |  |  |  |
Derivative [Line Items] |  |  |  |
Stated interest rate | 5.00% |  |  |
Senior Notes | Subsequent Event | 5.00% notes due 2053 |  |  |  |
Derivative [Line Items] |  |  |  |
Stated interest rate |  |  |  | 5.00%
Interest rate swap contracts | 5.00% notes due 2053 | Subsequent Event |  |  |  |
Derivative [Line Items] |  |  |  |
Total Swap Notional Amount |  |  |  | $ 250
Lyfnua |  |  |  |
Derivative [Line Items] |  |  |  |
Payments of contingent consideration | $ 25 |  |  |
Sanofi Pasteur |  |  |  |
Derivative [Line Items] |  |  |  |
Payments of contingent consideration | 126 |  |  |
Equity Funds |  |  |  |
Derivative [Line Items] |  |  |  |
Equity securities held through ownership interests in investment funds | 267 | 417 | 598 |
(Income) loss from investments in equity securities, net | 29 | 106 | $ 1,000 |
Accounts Receivable Factoring Collections |  |  |  |
Derivative [Line Items] |  |  |  |
Funds collected from factoring of receivable, held in restricted cash | $ 55 | 44 |  |
Customer Concentration Risk | Accounts Receivable | McKesson Corporation |  |  |  |
Derivative [Line Items] |  |  |  |
Percentage of accounts receivable represented by customers with largest balances | 21.00% |  |  |
Customer Concentration Risk | Accounts Receivable | Cencora, Inc. |  |  |  |
Derivative [Line Items] |  |  |  |
Percentage of accounts receivable represented by customers with largest balances | 21.00% |  |  |
Customer Concentration Risk | Accounts Receivable | Cardinal Health, Inc. |  |  |  |
Derivative [Line Items] |  |  |  |
Percentage of accounts receivable represented by customers with largest balances | 13.00% |  |  |
Level 2 |  |  |  |
Derivative [Line Items] |  |  |  |
Cash equivalents | $ 12,300 | 6,000 |  |
Derivatives Designated as Hedging Instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Total Swap Notional Amount | 12,465 | 12,754 |  |
Derivatives Not Designated as Hedging Instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Total Swap Notional Amount | $ 26,095 | $ 17,797 |  |
Maximum | Derivatives Designated as Hedging Instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Term of derivative contract | 2 years |  |  |
Maximum | Derivatives Not Designated as Hedging Instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Maximum planning cycle of hedges (less than) | 6 months |  |  |

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