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Financial Instruments - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024
Derivative [Line Items] |  |  |
Derivative, notional amount | $ 42,360 | $ 38,560 |
Pretax net unrealized gain on derivatives maturing within the next 12 months estimated to be reclassified from AOCI to sales | 16 |  |
Equity investments without readily determinable fair values | 872 |  | $ 851
Unrealized gains recognized on investments in equity securities without readily determinable fair value |  |  | 4
Unrealized losses recognized on investments in equity securities without readily determinable fair values | 11 |  | 5
Cumulative unrealized gains on investments | 309 |  |
Cumulative unrealized losses on investments | 118 |  |
Loss (income) from investments in equity securities, net | (90) |  | (143)
Fair value of loans payable and long-term debt, including current portion | 30,600 | 32,600 |
Debt, carrying amount | 34,800 | 37,100 |
Factored accounts receivable | 1,700 | 2,100 |
Cash collateral received from counterparties | 23 | 165 |
Equity Funds |  |  |
Derivative [Line Items] |  |  |
Equity securities held through ownership interest in investments funds | 249 |  | 396
Loss (income) from investments in equity securities, net | 23 |  | $ 2
Accounts Receivable Factoring Collections |  |  |
Derivative [Line Items] |  |  |
Restricted cash | 39 | 55 |
Level 2 |  |  |
Derivative [Line Items] |  |  |
Cash equivalents | 7,900 | 12,300 |
Interest rate swap contracts | 4.50% note due 2033 |  |  |
Derivative [Line Items] |  |  |
Derivative, notional amount | 1,500 |  |
Interest rate swap contracts | 5.00% note due 2053 |  |  |
Derivative [Line Items] |  |  |
Derivative, notional amount | 250 |  |
Derivatives Designated as Hedging Instruments |  |  |
Derivative [Line Items] |  |  |
Derivative, notional amount | 13,838 | 12,465 |
Derivatives Not Designated as Hedging Instruments |  |  |
Derivative [Line Items] |  |  |
Derivative, notional amount | $ 28,522 | $ 26,095 |
Maximum | Derivatives Designated as Hedging Instruments |  |  |
Derivative [Line Items] |  |  |
Maximum average period of maturities of contracts in years (less than) | 2 years |  |
Maximum | Derivatives Not Designated as Hedging Instruments |  |  |
Derivative [Line Items] |  |  |
Maximum average period of maturities of contracts in years (less than) | 6 months |  |

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