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Credit Quality And Allowance For Credit Losses (Nonaccrual Loans) (Details) - USD ($)
$ in Millions

3 Months Ended

Mar. 31, 2025

Mar. 31, 2024

Dec. 31, 2024

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

$ 80

$ 80

Nonaccrual Loans with Related Allowance

221

228

Interest income

1

$ 1

Total Nonaccrual Loans

301

308

Business loans: | Commercial

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

18

16

Nonaccrual Loans with Related Allowance

221

228

Total Nonaccrual Loans

239

244

Business loans: | Commercial | Domestic

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

15

9

Nonaccrual Loans with Related Allowance

93

116

Total Nonaccrual Loans

108

125

Retail loans:

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

62

64

Nonaccrual Loans with Related Allowance

0

0

Total Nonaccrual Loans

62

64

Retail loans: | Consumer

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

27

Nonaccrual Loans with Related Allowance

0

Total Nonaccrual Loans

27

27

Real estate construction | Business loans: | Commercial | Domestic

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

0

Nonaccrual Loans with Related Allowance

20

Total Nonaccrual Loans

20

0

Real estate construction | Commercial | Business loans: | Commercial | Domestic

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

0

Nonaccrual Loans with Related Allowance

20

Total Nonaccrual Loans

^[1]

20

0

Real estate construction | Other business lines | Business loans: | Commercial | Domestic

Financing Receivable, Nonaccrual [Line Items]

Total Nonaccrual Loans

^[2]

0

0

Commercial mortgage: | Business loans: | Commercial | Domestic

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

3

7

Nonaccrual Loans with Related Allowance

107

111

Total Nonaccrual Loans

110

118

Commercial mortgage: | Commercial | Business loans: | Commercial | Domestic

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

^[1]

0

0

Nonaccrual Loans with Related Allowance

^[1]

45

49

Total Nonaccrual Loans

^[1]

45

49

Commercial mortgage: | Other business lines | Business loans: | Commercial | Domestic

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

^[2]

3

7

Nonaccrual Loans with Related Allowance

^[2]

62

62

Total Nonaccrual Loans

^[2]

65

69

Residential mortgage | Retail loans:

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

35

37

Nonaccrual Loans with Related Allowance

0

0

Total Nonaccrual Loans

35

37

Home equity | Retail loans: | Consumer

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

27

27

Nonaccrual Loans with Related Allowance

0

0

Total Nonaccrual Loans

27

27

Other consumer | Retail loans: | Consumer

Financing Receivable, Nonaccrual [Line Items]

Total Nonaccrual Loans

0

0

Lease financing | Business loans: | Commercial | Domestic

Financing Receivable, Nonaccrual [Line Items]

Total Nonaccrual Loans

1

1

Lease financing | Lease financing | Business loans: | Commercial | Domestic

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

0

Nonaccrual Loans with Related Allowance

1

Total Nonaccrual Loans

$ 1

Finance Leases Portfolio Segment | Commercial | Domestic | Business Loans

Financing Receivable, Nonaccrual [Line Items]

Nonaccrual Loans with No Related Allowance

0

Nonaccrual Loans with Related Allowance

1

Total Nonaccrual Loans

$ 1

[1]	Primarily loans to real estate developers.
[2]	Primarily loans secured by owner-occupied real estate.

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