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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Revolving Credit Facility | Line of Credit |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Maximum borrowing capacity | $ 6,000 |  |
Revolving Credit Facility | Variable-Rate Revolving Credit Facilities Due April 2027 | Line of Credit | Lending Joint Ventures |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Maximum borrowing capacity | 83 |  |
Term Loan Facilities | Variable-Rate Term Loan Facilities Due April 2027 | Line of Credit | Lending Joint Ventures |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Maximum borrowing capacity | 437 |  |
Long-term debt | 52 |  |
Carrying value |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Total debt | 23,500 |  | $ 22,200
Level 2 | Fair value |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Total debt | 22,700 |  | 21,600
Financial Guarantee |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Carrying value of non-contingent liability | 520 |  |
Financial Guarantee | Lending Joint Ventures |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |  |
Carrying value of non-contingent liability | 28 |  | $ 31
Other (expense) income | $ 4 | $ 2 |

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