Shareholders' Equity - Schedule of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended				6 Months Ended
	Jul. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Dividends Payable [Line Items]
Preferred stock cash dividend		$ 35	$ 20	$ 34	$ 25	$ 55	$ 59
Cash dividends declared (in USD per share)		$ 0.57	$ 0.57	$ 0.52	$ 0.52	$ 1.14	$ 1.04
Total (In millions)		$ 210	$ 209	$ 179	$ 182	$ 419	$ 361
Series D Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)		$ 1,475		$ 1,475		$ 2,950	$ 2,950
Preferred stock cash dividend		$ 11		$ 11		$ 22	$ 22
Series D Preferred Stock | Forecast | Subsequent Event
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1,475
Preferred stock cash dividend	$ 11
Series D Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)		$ 0.37		$ 0.37		$ 0.74	$ 0.74
Series D Preferred Stock, Depository Share | Forecast | Subsequent Event
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 0.37
Series F Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)		$ 1,130		$ 966		$ 2,080	$ 1,919
Preferred stock cash dividend		$ 3		$ 2		$ 5	$ 9
Series F Preferred Stock | Forecast | Subsequent Event
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1,387
Preferred stock cash dividend	$ 3
Series F Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)		$ 11.30		$ 9.66		$ 20.80	$ 19.19
Series F Preferred Stock, Depository Share | Forecast | Subsequent Event
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 13.87
Series G Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)		$ 1,338		$ 1,338		$ 2,676	$ 2,676,000,000
Preferred stock cash dividend		$ 7		$ 7		$ 14	$ 14
Series G Preferred Stock | Forecast | Subsequent Event
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1,338
Preferred stock cash dividend	$ 7
Series G Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)		$ 0.33		$ 0.33		$ 0.66	$ 0.66
Series G Preferred Stock, Depository Share | Forecast | Subsequent Event
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 0.33
Series H Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)		$ 2,813		$ 2,813		$ 2,813	$ 2,813
Preferred stock cash dividend		$ 14		$ 14		$ 14	$ 14
Series H Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)		$ 28.13		$ 28.13		$ 28.13	$ 28.13