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Debt - Narrative (Details) - USD ($) $ in Millions | 1 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Debt Instrument [Line Items] |  |
Total debt | $ 18,400 | $ 18,900
Notes | 2.125% Notes due 2024 |  |
Debt Instrument [Line Items] |  |
Retired debt | $ 461 |
Stated interest rate | 2.125% |
Variable Rate Debt Bonds |  |
Debt Instrument [Line Items] |  |
Debt at face value | $ 283 |
Revolving Credit Facility |  |
Debt Instrument [Line Items] |  |
Project finance facility, maximum borrowing capacity | 5,500 |
Minimum limit of debt for cross default provision | 200 |
Remaining borrowing capacity under revolving credit facility | 5,500 | $ 5,500
Letter of Credit | Maximum |  |
Debt Instrument [Line Items] |  |
Line of credit facility, capacity available for specific purpose other than for trade purchases | $ 500 |

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