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Debt - Schedule of Current Portion of Debt (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Debt Instrument [Line Items] |  |
Current portion of debt | $ 4,049 | $ 3,385
$3.5 billion credit facility due August 20, 2027 |  |
Debt Instrument [Line Items] |  |
Current portion of debt | 0 | 0
Maximum borrowing capacity | 3,500 |
$500 million credit facility due November 16, 2023 |  |
Debt Instrument [Line Items] |  |
Current portion of debt | 0 | 0
Maximum borrowing capacity |  | 500
Commercial paper notes |  |
Debt Instrument [Line Items] |  |
Current portion of debt | 1,989 | 0
Maximum borrowing capacity | 3,500 |
3.15%, due January 2023 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Current portion of debt | 0 | $ 1,000
Interest rate, stated percentage |  | 3.15%
Senior Notes, floating rate, due January 15, 2023 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Current portion of debt | 0 | $ 250
3.45%, due February 2023 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Current portion of debt | 0 | $ 625
Interest rate, stated percentage |  | 3.45%
3.50%, due September 2023 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Current portion of debt | 0 | $ 600
Interest rate, stated percentage |  | 3.50%
5.625%, due November 2023 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Current portion of debt | 0 | $ 750
Interest rate, stated percentage |  | 5.625%
4.15%, due February 2024 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Current portion of debt | $ 650 | $ 0
Interest rate, stated percentage | 4.15% |
4.30%, due May 2024 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Current portion of debt | $ 600 | 0
Interest rate, stated percentage | 4.30% |
4.25%, due September 2024 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Current portion of debt | $ 650 | 0
Interest rate, stated percentage | 4.25% |
Trust I Preferred Securities, 4.75%, due March 2028(e) | Capital Trust I |  |
Debt Instrument [Line Items] |  |
Current portion of debt | $ 111 | 111
Interest rate, stated percentage | 4.75% |
Current portion of other debt |  |
Debt Instrument [Line Items] |  |
Current portion of debt | $ 49 | $ 49

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