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Premises and Equipment (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Premises and Equipment [Abstract] |  |  |
Capitalized Computer Software, Amortization | $ 26 | $ 25 | $ 33
Capitalized Computer Software, Unamoritize | $ 106 | $ 83 |

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- Definition Capitalized Computer Software, Unamoritize + References No definition available. + Details
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- Definition Premises and Equipment [Abstract] + References No definition available. + Details
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- Definition Amount of expense for amortization of capitalized computer software costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481283/985-20-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -SubTopic 20 -Topic 985 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481283/985-20-50-1 + Details
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