Derivative Financial Instruments - Master Netting (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross	$ 3,144	$ 4,027
Amount Offset	(1,758)	(1,657)
Net Amount in Consolidated Balance Sheets	1,386	2,370
Held/Pledged Financial Instruments	0	(1)
Net Amount	1,386	2,369
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross	(4,362)	(3,536)
Amount Offset	2,448	2,950
Net amount	(1,914)	(586)
Held/Pledged Financial Instruments	27	66
Net Amount	(1,887)	(520)
Derivatives Subject to Master Netting Arrangements
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross	2,604	2,752
Amount Offset	(1,433)	(1,221)
Net Amount in Consolidated Balance Sheets	1,171	1,531
Held/Pledged Financial Instruments	0	(1)
Net Amount	1,171	1,530
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross	(3,567)	(2,873)
Amount Offset	2,123	2,514
Net amount	(1,444)	(359)
Held/Pledged Financial Instruments	27	66
Net Amount	(1,417)	(293)
Derivatives Not Subject to Master Netting Arrangement
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross	120	388
Amount Offset	0	0
Net Amount in Consolidated Balance Sheets	120	388
Held/Pledged Financial Instruments	0	0
Net Amount	120	388
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross	(466)	(225)
Amount Offset	0	0
Net amount	(466)	(225)
Held/Pledged Financial Instruments	0	0
Net Amount	(466)	(225)
Exchange Traded
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross	420	887
Amount Offset	(325)	(436)
Net Amount in Consolidated Balance Sheets	95	451
Held/Pledged Financial Instruments	0	0
Net Amount	95	451
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross	(329)	(438)
Amount Offset	325	436
Net amount	(4)	(2)
Held/Pledged Financial Instruments	0	0
Net Amount	$ (4)	$ (2)