Shareholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		6 Months Ended
	Jun. 20, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Class of Stock [Line Items]
Common stock dividends declared and paid				$ 750	$ 1,200
Preferred stock dividends declared and paid		$ 59	$ 59	59
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	$ 29			29	29
Preferred stock dividends declared (in dollars per share)	$ 28.75
Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid				16	16
Preferred stock dividends declared (in dollars per share)	32.50
Series C Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid				$ 14	$ 16
Preferred stock dividends declared (in dollars per share)	$ 28.50