Derivative Financial Instruments - Master Netting (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross	$ 2,454	$ 2,453
Amount Offset	(1,762)	(1,769)
Net Amount in Consolidated Balance Sheets	692	684
Held/Pledged Financial Instruments	0	0
Net Amount	692	684
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross	(4,396)	(4,749)
Amount Offset	1,807	1,778
Net amount	(2,589)	(2,971)
Held/Pledged Financial Instruments	95	43
Net Amount	(2,494)	(2,928)
Derivatives Subject to Master Netting Arrangements
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross	1,722	1,895
Amount Offset	(1,370)	(1,408)
Net Amount in Consolidated Balance Sheets	352	487
Held/Pledged Financial Instruments	0	0
Net Amount	352	487
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross	(3,431)	(3,688)
Amount Offset	1,415	1,417
Net amount	(2,016)	(2,271)
Held/Pledged Financial Instruments	95	43
Net Amount	(1,921)	(2,228)
Derivatives Not Subject to Master Netting Arrangement
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross	107	86
Amount Offset	0	0
Net Amount in Consolidated Balance Sheets	107	86
Held/Pledged Financial Instruments	0	0
Net Amount	107	86
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross	(572)	(697)
Amount Offset	0	0
Net amount	(572)	(697)
Held/Pledged Financial Instruments	0	0
Net Amount	(572)	(697)
Exchange Traded
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross	625	472
Amount Offset	(392)	(361)
Net Amount in Consolidated Balance Sheets	233	111
Held/Pledged Financial Instruments	0	0
Net Amount	233	111
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross	(393)	(364)
Amount Offset	392	361
Net amount	(1)	(3)
Held/Pledged Financial Instruments	0	0
Net Amount	$ (1)	$ (3)