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Income Taxes And Tax-Related Items Reconciliation of Expected Income Tax Expense at the Federal Statutory Rate to the Corporation's Provision for Income Taxes (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Tax Disclosure [Abstract] |  |  |
Tax based on federal statutory rate, amount | $ 240 | $ 310 | $ 313
Tax based on federal statutory rate, percent | 21.00% | 21.00% | 21.00%
State income tax, amount | $ 35 | $ 36 | $ 35
State income tax, percent | 3.10% | 2.50% | 2.40%
Employee Stock Transactions, amount | $ (1) | $ (3) | $ (3)
Employee Stock Transactions, percent | (0.10%) | (0.20%) | (0.20%)
Affordable housing and historic credits, amount | $ (16) | $ (13) | $ (13)
Affordable housing and historic credits, percent | 1.40% | 0.90% | 0.90%
Bank-owned life insurance, amount | $ (10) | $ (10) | $ (10)
Bank-owned life insurance, percent | (0.90%) | (0.70%) | (0.60%)
FDIC fees, amount | $ 15 | $ 6 | $ 5
FDIC fees, percent | 1.30% | 0.40% | 0.30%
Tax-related interest and penalties, amount | $ (4) | $ 0 | $ 0
Tax-related interest and penalties, percent | (0.40%) | 0.00% | 0.00%
Other, amount | $ 4 | $ (1) | $ (5)
Other, percent | 0.40% | (0.10%) | (0.40%)
Provision for income taxes, amount | $ 263 | $ 325 | $ 322
Provision for income taxes, percent | 23.00% | 22.00% | 21.60%

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- Definition The portion of the difference between total income tax expense (benefit) as reported in the Income Statement for the period and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to interest on income tax liabilities. + References No definition available. + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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