Derivative Instruments - Schedule of Cash Flow Hedges included in AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 34,300	$ 36,477
Change in fair value, net of tax	(62)
Reclassification into earnings, net of tax	0
Ending Balance	34,424	36,370
Cash Flow Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	5	0
Change in fair value, net of tax	2	4
Reclassification into earnings, net of tax	(2)	0
Ending Balance	5	4
Interest rate swap contracts
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	84	48
Change in fair value, net of tax	16	(26)
Reclassification into earnings, net of tax	0	1
Ending Balance	100	23
Net Investment Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(21)	56
Change in fair value, net of tax	21	(8)
Reclassification into earnings, net of tax	1	1
Ending Balance	$ 1	$ 49