Shareholders' Equity - Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024
Class of Stock [Line Items]
Preferred stock cash dividend	$ 58	$ 63	$ 46	$ 42	$ 55	$ 34	$ 167	$ 131
Series D Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)							$ 0	$ 1,475
Preferred stock cash dividend							$ 0	$ 11
Series D Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)							$ 0	$ 0.37
Series F Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)							$ 0	$ 2,336
Preferred stock cash dividend							$ 0	$ 6
Series F Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)							$ 0	$ 23.36
Series G Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 1,338			$ 1,338			$ 4,013	$ 4,013
Preferred stock cash dividend	$ 7			$ 7			$ 20	$ 20
Series G Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 0.33			$ 0.33			$ 1	$ 1.00
Series H Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 0			$ 2,036			$ 0	$ 6,251
Preferred stock cash dividend	$ 0			$ 10			$ 0	$ 31
Series H Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 0			$ 20.36			$ 0	$ 62.51
Series I Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 1,675			$ 1,675			$ 5,025	$ 4,188
Preferred stock cash dividend	$ 25			$ 25			$ 75	$ 63
Series I Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 16.75			$ 16.75			$ 50.25	$ 41.88
Series J Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 1,675			$ 0			$ 5,025	$ 0
Preferred stock cash dividend	$ 14			$ 0			$ 43	$ 0
Series J Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 16.75			$ 0			$ 50.25	$ 0
Series K Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 1,613			$ 0			$ 3,924	$ 0
Preferred stock cash dividend	$ 12			$ 0			$ 29	$ 0
Series K Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)	$ 16.13			$ 0			$ 39.24	$ 0