Fair Value of Financial Instruments - Narrative (Details) $ in Millions	Sep. 30, 2023 USD ($) $ / Contract	Dec. 31, 2022 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in unconsolidated affiliates	$ 3,184	$ 2,642
Title
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in unconsolidated affiliates	$ 264	$ 187
Credit linked note | Valuation, Income Approach
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, strike price | $ / Contract	0