Derivative Instruments - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Derivative [Line Items]
Other Comprehensive Income (Loss), before Tax	$ 3,377,000,000	$ (2,326,000,000)	$ 3,085,000,000	$ (933,000,000)
Derivatives used in Net Investment Hedge, Net of Tax	15,000,000		15,000,000		$ 26,000,000
Amount of Ineffectiveness on Net Investment Hedges	0	0	0	0
Cash flow hedges | Derivatives designated as hedges | Interest rate swaps
Derivative [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax	152,000,000	91,000,000	149,000,000	(35,000,000)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			0
Cash flow hedges | Derivatives designated as hedges | Foreign currency swaps
Derivative [Line Items]
Gain (Loss) on Foreign Currency Cash Flow Hedge Ineffectiveness	0	0	0	0
Fair Value Hedging | Derivatives designated as hedges | Net Investment Hedging
Derivative [Line Items]
Other Comprehensive Income (Loss), before Tax	$ (14,000,000)	$ 13,000,000	$ (11,000,000)	$ 5,000,000