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Financial Instruments - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Derivative [Line Items] |  |  |
Pretax net unrealized losses on derivatives maturing within the next 12 months estimated to be reclassified from AOCI to sales | $ 40 |  |
Equity investments without readily determinable fair values | 832 | $ 832 |
Unrealized gains recognized on investments in equity securities without readily determinable fair value | 10 | 56 |
Unrealized losses recognized on investments in equity securities without readily determinable fair values | 61 | 12 |
Cumulative upward price adjustment | 299 |  |
Cumulative downward price adjustment | 80 |  |
(Income) loss from investments in equity securities, net | (340) | 1,419 | $ (1,940)
Fair value of loans payable and long-term debt, including current portion | 32,000 | 26,700 |
Debt, carrying amount | 35,100 | 30,700 |
Factored accounts receivable | 3,000 | 2,500 |
Cash collateral received from counterparties | 3 | 66 |
Cash collateral advanced to counterparties |  | 19 |
Equity Funds |  |  |
Derivative [Line Items] |  |  |
Equity securities held through ownership interests in investment funds | 417 | 598 | 1,700
(Income) loss from investments in equity securities, net | 106 | 1,000 | $ (1,400)
Accounts Receivable Factoring Collections |  |  |
Derivative [Line Items] |  |  |
Funds collected from factoring of receivable, held in restricted cash | $ 44 | 67 |
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 | 20.00% |  |
Customer Concentration Risk | Accounts Receivable | Cardinal Health, Inc. |  |  |
Derivative [Line Items] |  |  |
Percentage of accounts receivable represented by customers with largest balances | 14.00% |  |
Level 2 |  |  |
Derivative [Line Items] |  |  |
Cash equivalents | $ 6,000 | $ 11,300 |
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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