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Revenue Recognition Revenue Recognition (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Disaggregation of Revenue [Line Items] |  |  |  |
Percentage of Revenue, Remaining Performance Obligation |  |  | 5.00% |
Out of Scope of Topic 606 Revenue [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Fees and Commissions, Mortgage Banking and Servicing | $ 68.1 | $ 76.1 | $ 211.5 | $ 222.6

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- Definition Income from mortgage banking activities (fees and commissions) and servicing real estate mortgages, credit cards, and other financial assets held by others net of any related impairment of capitalized service costs. Also includes any premiums received in lieu of regular servicing fees on such loans only as earned over the life of the loans. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1402 -Subsection Instruction 3 -Publisher SEC + Details
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