Derivative Financial Instruments - Schedule of Volume and Fair Value Positions of Derivative Instruments (Details) - Derivatives not designated as accounting hedging instruments $ in Millions	Mar. 31, 2025 USD ($) contract	Dec. 31, 2024 USD ($) contract
Derivatives, Fair Value
Total asset derivatives, notional amount	$ 775	$ 852
Total liability derivatives, notional amount	136	0
Total derivatives, notional amount	$ 911	$ 852
Total asset derivatives, number of contracts | contract	4,134	5,033
Total liability derivatives, number of contracts | contract	4,161	12,774
Total derivatives, Number of contracts | contract	8,295	17,807
Net amount on balance sheet	$ 130	$ 154
Net amount on balance sheet	(1)	(1)
Total derivatives, fair value, net	129	153
Asset derivatives, gross asset	136	155
Liability derivatives, gross asset	1	0
Asset derivatives, gross liability	(6)	(1)
Liability derivatives gross liability	$ (2)	$ (1)
Interest rate contracts
Derivatives, Fair Value
Total asset derivatives, number of contracts | contract	3,528	4,596
Total liability derivatives, number of contracts | contract	3,691	12,112
Net amount on balance sheet	$ 0	$ 0
Net amount on balance sheet	0	(1)
Asset derivatives, gross asset	0	0
Liability derivatives, gross asset	0	0
Asset derivatives, gross liability	0	0
Liability derivatives gross liability	0	$ (1)
Interest rate swap agreements
Derivatives, Fair Value
Total liability derivatives, notional amount	37
Net amount on balance sheet	(1)
Liability derivatives, gross asset	0
Liability derivatives gross liability	$ (1)
Options
Derivatives, Fair Value
Total asset derivatives, number of contracts | contract	6
Total liability derivatives, number of contracts | contract	6
Net amount on balance sheet	$ 0
Net amount on balance sheet	0
Asset derivatives, gross asset	0
Liability derivatives, gross asset	0
Asset derivatives, gross liability	0
Liability derivatives gross liability	$ 0
Futures
Derivatives, Fair Value
Total asset derivatives, number of contracts | contract	600	437
Total liability derivatives, number of contracts | contract	464	662
Net amount on balance sheet	$ 1	$ 0
Net amount on balance sheet	0	0
Asset derivatives, gross asset	1	0
Liability derivatives, gross asset	0	0
Asset derivatives, gross liability	0	0
Liability derivatives gross liability	0	0
Foreign currency contracts
Derivatives, Fair Value
Total asset derivatives, notional amount	525	602
Total liability derivatives, notional amount	99
Net amount on balance sheet	(5)	20
Net amount on balance sheet	0
Asset derivatives, gross asset	1	21
Liability derivatives, gross asset	1
Asset derivatives, gross liability	(6)	(1)
Liability derivatives gross liability	(1)
Contingent consideration
Derivatives, Fair Value
Total asset derivatives, notional amount	250	250
Net amount on balance sheet	134	134
Asset derivatives, gross asset	134	134
Asset derivatives, gross liability	$ 0	$ 0