Derivative Financial Instruments - Master Netting (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross	$ 2,728	$ 2,453
Amount Offset	(1,923)	(1,769)
Net Amount in Consolidated Balance Sheets	805	684
Held/Pledged Financial Instruments	0	0
Net Amount	805	684
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross	(5,184)	(4,749)
Amount Offset	2,056	1,778
Net amount	(3,128)	(2,971)
Held/Pledged Financial Instruments	126	43
Net Amount	(3,002)	(2,928)
Derivatives Subject to Master Netting Arrangements
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross	1,738	1,895
Amount Offset	(1,438)	(1,408)
Net Amount in Consolidated Balance Sheets	300	487
Held/Pledged Financial Instruments	0	0
Net Amount	300	487
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross	(4,020)	(3,688)
Amount Offset	1,571	1,417
Net amount	(2,449)	(2,271)
Held/Pledged Financial Instruments	126	43
Net Amount	(2,323)	(2,228)
Derivatives Not Subject to Master Netting Arrangement
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross	83	86
Amount Offset	0	0
Net Amount in Consolidated Balance Sheets	83	86
Held/Pledged Financial Instruments	0	0
Net Amount	83	86
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross	(678)	(697)
Amount Offset	0	0
Net amount	(678)	(697)
Held/Pledged Financial Instruments	0	0
Net Amount	(678)	(697)
Exchange Traded
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross	907	472
Amount Offset	(485)	(361)
Net Amount in Consolidated Balance Sheets	422	111
Held/Pledged Financial Instruments	0	0
Net Amount	422	111
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross	(486)	(364)
Amount Offset	485	361
Net amount	(1)	(3)
Held/Pledged Financial Instruments	0	0
Net Amount	$ (1)	$ (3)