Total Equity - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Preferred Stock Dividends
Preferred stock dividends declared	$ 138	$ 123	$ 366	$ 364
Dividends declared per common share (USD per share)	$ 0.775	$ 0.700	$ 2.175	$ 1.400
Common stock dividends	$ 1,329	$ 1,276	$ 3,802	$ 2,562
Series A
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)	$ 261	$ 256	$ 756	$ 758
Preferred stock dividends declared	$ 11	$ 11	$ 33	$ 33
Series C
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)	$ 25	$ 25	$ 75	$ 75
Preferred stock dividends declared	$ 13	$ 13	$ 39	$ 39
Series E
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)	$ 445	$ 445	$ 1,336	$ 1,336
Preferred stock dividends declared	$ 15	$ 15	$ 45	$ 45
Series F
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)	$ 430	$ 430	$ 1,289	$ 1,289
Preferred stock dividends declared	$ 15	$ 15	$ 44	$ 44
Series H
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)	$ 0	$ 239	$ 0	$ 719
Preferred stock dividends declared	$ 0	$ 12	$ 0	$ 37
Series I
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)	$ 398	$ 398	$ 1,195	$ 1,195
Preferred stock dividends declared	$ 16	$ 16	$ 48	$ 48
Series J
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)			$ 0	$ 253
Preferred stock dividends declared			$ 0	$ 15
Series K
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)	$ 366	$ 366	$ 1,097	$ 1,097
Preferred stock dividends declared	$ 15	$ 15	$ 45	$ 45
Series L
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)	$ 305	$ 305	$ 914	$ 914
Preferred stock dividends declared	$ 6	$ 6	$ 18	$ 18
Series M
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)	$ 29	$ 29	$ 59	$ 59
Preferred stock dividends declared	$ 12	$ 12	$ 24	$ 24
Series N
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)	$ 2,650	$ 2,650	$ 5,300	$ 5,300
Preferred stock dividends declared	$ 8	$ 8	$ 16	$ 16
Series O
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)	$ 266	$ 0	$ 797	$ 0
Preferred stock dividends declared	$ 14	$ 0	$ 41	$ 0
Series P
Preferred Stock Dividends
Preferred stock dividend declared (USD per share)	$ 330	$ 0	$ 330	$ 0
Preferred stock dividends declared	$ 13	$ 0	$ 13	$ 0