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Stockholders' Equity And Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($)	Mar. 31, 2022 USD ($) $ / shares	Sep. 15, 2025 USD ($)	Sep. 15, 2024 USD ($)	Apr. 20, 2022 USD ($)
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred stock dividends	$ 24		$ 24
Banking Regulation, Capital Conservation Buffer, Capital Conserved, Minimum	0.025
Stock Repurchase Program, Authorized Amount						$ 2,500
Shares repurchased (in shares) | shares	725
Stock Repurchased During Period, Value		$ 15
Cash dividend declared (in dollars per share) | $ / shares	$ 0.20		$ 0.17
Series B Preferred Stock [Member] | Subsequent Event [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
ExcessofRedemptionAmountOverCarryingAmount					$ 67
PreferredDividendsReductiontoRetainedEarningsatRedemption					52
Series C Preferred Stock [Member] | Subsequent Event [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
ExcessofRedemptionAmountOverCarryingAmount					$ 10
Series D Preferred Stock | Subsequent Event [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
ExcessofRedemptionAmountOverCarryingAmount				$ 4
Series E Preferred Stock | Subsequent Event [Member]
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
ExcessofRedemptionAmountOverCarryingAmount				$ 10
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Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred stock dividends	$ 24		$ 24

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