v3.25.2
Investment Securities (Summary Of Investment Securities In Unrealized Loss Positions) (Details)
Jun. 30, 2025
USD ($)
security
Dec. 31, 2024
USD ($)
security
Schedule of Investments [Line Items]    
Less than 12 months, Fair Value $ 100,000,000 $ 452,000,000
Less than 12 Months, Unrealized Losses 0 0
12 months or more, Fair Value 13,588,000,000 13,777,000,000
12 Months or more, Unrealized Losses 2,441,000,000 2,874,000,000
Total, Fair Value 13,688,000,000 14,229,000,000
Total, Unrealized Losses $ 2,441,000,000 $ 2,874,000,000
Securities with no credit impairment in unrealized loss position 997 1,172
U.S. Treasury securities    
Schedule of Investments [Line Items]    
Less than 12 months, Fair Value $ 99,000,000 $ 438,000,000
Less than 12 Months, Unrealized Losses 0 0
12 months or more, Fair Value 2,000,000 25,000,000
12 Months or more, Unrealized Losses 0 1,000,000
Total, Fair Value 101,000,000 463,000,000
Total, Unrealized Losses $ 0 $ 1,000,000
Securities with no credit impairment in unrealized loss position | security 2 7
Residential mortgage-backed securities    
Schedule of Investments [Line Items]    
Less than 12 months, Fair Value [1] $ 1,000,000 $ 0
Less than 12 Months, Unrealized Losses [1] 0 0
12 months or more, Fair Value [1] 8,764,000,000 9,074,000,000
12 Months or more, Unrealized Losses [1] 2,044,000,000 2,304,000,000
Total, Fair Value [1] 8,765,000,000 9,074,000,000
Total, Unrealized Losses [1] $ 2,044,000,000 $ 2,304,000,000
Securities with no credit impairment in unrealized loss position | security [1] 748 913
Commercial mortgage-backed securities    
Schedule of Investments [Line Items]    
Less than 12 months, Fair Value [1] $ 0 $ 14,000,000
Less than 12 Months, Unrealized Losses [1] 0 0
12 months or more, Fair Value [1] 4,822,000,000 4,678,000,000
12 Months or more, Unrealized Losses [1] 397,000,000 569,000,000
Total, Fair Value [1] 4,822,000,000 4,692,000,000
Total, Unrealized Losses [1] $ 397,000,000 $ 569,000,000
Securities with no credit impairment in unrealized loss position | security [1] 247 252
[1] Issued and/or guaranteed by U.S. government agencies or U.S. government-sponsored enterprises.