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Stockholders' Equity And Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		29 Months Ended
	Mar. 31, 2025 USD ($) $ / shares	Mar. 31, 2024 $ / shares	Sep. 30, 2024 USD ($) shares	Sep. 15, 2029 USD ($)	May 15, 2029 USD ($)	Jun. 15, 2026 USD ($)	Sep. 15, 2025 USD ($)	Apr. 20, 2022 USD ($)
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
Preferred stock dividends	$ (25)
Banking Regulation, Capital Conservation Buffer, Capital Conserved, Minimum	0.025
Stock Repurchase Program, Authorized Amount								$ 2,500
Stock Repurchased During Period, Shares | shares			44
Stock Repurchased During Period, Value			$ 856
Cash dividend declared (in dollars per share) | $ / shares	$ 0.25	$ 0.24
Series C | Subsequent Event
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
ExcessofRedemptionAmountOverCarryingAmount					$ 10
Series D | Subsequent Event
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
ExcessofRedemptionAmountOverCarryingAmount							$ 4
Series E | Subsequent Event
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
ExcessofRedemptionAmountOverCarryingAmount						$ 10
Series F Preferred Stock | Subsequent Event
Stockholders' Equity And Comprehensive Income (Loss) [Line Items]
ExcessofRedemptionAmountOverCarryingAmount				$ 11

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Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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