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Credit Quality And Allowance For Credit Losses (Changes In The Allowance For Loan Losses And Related Loan Amounts) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Balance at beginning of period | $ 609 | $ 683 | $ 618 | $ 992
Provision for credit losses | 28 | (42) | 27 | (359)
Balance at end of period | $ 624 | $ 639 | $ 624 | $ 639
As a percentage of total loans | 1.21% | 1.33% | 1.21% | 1.33%
Financing Receivable |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Balance at beginning of period | $ 563 | $ 652 | $ 588 | $ 948
Loan charge-offs | (26) | (26) | (57) | (50)
Recoveries on loans previously charged-off | 13 | 24 | 36 | 56
Net loan (charge-offs) recoveries | (13) | (2) | (21) | 6
Provision for credit losses | 26 | (41) | 9 | (345)
Balance at end of period | $ 576 | $ 609 | $ 576 | $ 609
As a percentage of total loans | 1.11% | 1.26% | 1.11% | 1.26%
Unused Commitments to Extend Credit |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Balance at beginning of period | $ 46 | $ 31 | $ 30 | $ 44
Provision for credit losses | 2 | (1) | 18 | (14)
Balance at end of period | 48 | 30 | 48 | 30
Business loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Balance at beginning of period | 536 | 613 | 555 | 930
Provision for credit losses | 26 | (31) | 16 | (357)
Balance at end of period | $ 549 | $ 578 | $ 549 | $ 578
As a percentage of total loans | 1.15% | 1.30% | 1.15% | 1.30%
Business loans | Financing Receivable |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Balance at beginning of period | $ 502 | $ 589 | $ 531 | $ 895
Loan charge-offs | (25) | (26) | (55) | (48)
Recoveries on loans previously charged-off | 12 | 22 | 33 | 53
Net loan (charge-offs) recoveries | (13) | (4) | (22) | 5
Provision for credit losses | 24 | (31) | 4 | (346)
Balance at end of period | $ 513 | $ 554 | $ 513 | $ 554
As a percentage of total loans | 1.07% | 1.25% | 1.07% | 1.25%
Business loans | Unused Commitments to Extend Credit |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Balance at beginning of period | $ 34 | $ 24 | $ 24 | $ 35
Provision for credit losses | 2 | 0 | 12 | (11)
Balance at end of period | 36 | 24 | 36 | 24
Retail loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Balance at beginning of period | 73 | 70 | 63 | 62
Provision for credit losses | 2 | (11) | 11 | (2)
Balance at end of period | $ 75 | $ 61 | $ 75 | $ 61
As a percentage of total loans | 1.88% | 1.57% | 1.88% | 1.57%
Retail loans | Financing Receivable |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Balance at beginning of period | $ 61 | $ 63 | $ 57 | $ 53
Loan charge-offs | (1) | 0 | (2) | (2)
Recoveries on loans previously charged-off | 1 | 2 | 3 | 3
Net loan (charge-offs) recoveries | 0 | 2 | 1 | 1
Provision for credit losses | 2 | (10) | 5 | 1
Balance at end of period | $ 63 | $ 55 | $ 63 | $ 55
As a percentage of total loans | 1.58% | 1.42% | 1.58% | 1.42%
Retail loans | Unused Commitments to Extend Credit |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Balance at beginning of period | $ 12 | $ 7 | $ 6 | $ 9
Provision for credit losses | 0 | (1) | 6 | (3)
Balance at end of period | $ 12 | $ 6 | $ 12 | $ 6

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