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Fair Value of Financial Instruments - NAV (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Investments in unconsolidated affiliates | $ 2,835 | $ 2,486
Investments measured under equity method or NAV expedient | 2,879 | 2,534
Fair Value Measured at Net Asset Value |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Equity securities (NAV) | 44 | 48
Equity Method Investment, Nonconsolidated Investee or Group of Investees |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Investments in unconsolidated affiliates | 167 | 136
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Fair Value Measured at Net Asset Value |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Investments in unconsolidated affiliates | $ 2,668 | $ 2,350

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