Investment Securities - Schedule Of Realized Gain (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Gross realized gains	$ 3	$ 5	$ 23
Net realized gain on available-for-sale securities	3	5	23
Net realized gain on equity securities	75	32	72
Net unrealized (loss) gain on equity securities	(6)	107	(215)
Other gain (loss) on investments, net	$ 72	$ 144	$ (120)