Shareholders' Equity - Schedule of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Dividends Payable [Line Items]
Preferred stock cash dividend	$ 185	$ 122	$ 112
Series D Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1,475	$ 5,900
Preferred stock cash dividend	$ 11	$ 44
Series D Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 0.37	$ 1.48
Series F Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 2,336	$ 8,935
Preferred stock cash dividend	$ 6	$ 23
Series F Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 23.36	$ 89.35
Series G Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 5,350	$ 5,350
Preferred stock cash dividend	$ 27	$ 27
Depositary Shares, each representing a 1/4,000th ownership interest in a share of Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series G, without par value per share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 1.34	$ 1.34
Series H Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 6,251	$ 5,625
Preferred stock cash dividend	$ 31	$ 28
Series H Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 62.51	$ 56.25
Series I Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 5,863
Preferred stock cash dividend	$ 88
Series I Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 58.63
Series J Preferred Stock
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 2,643
Preferred stock cash dividend	$ 22
Series J Preferred Stock, Depository Share
Dividends Payable [Line Items]
Preferred dividends declared (USD per share)	$ 26.43