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Deposits (Tables) | 12 Months Ended
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Dec. 31, 2023
Banking And Thrifts [Abstract] |
Escrow, Mortgage Subserving, and Other Deposits | Deposit accounts are summarized as follows:
|  | December 31, |
(dollars in millions) |  | 2023 |  |  | 2022 |
Escrow deposits: |  |  |  |  |  |
Interest bearing |  | $ | 2,063.0 |  |  | $ | 2,542.1 |
Non-interest bearing |  |  | 4,531.3 |  |  |  | 2,077.3 |
|  |  | 6,594.3 |  |  |  | 4,619.4 |
Mortgage subservicing deposits: |  |  |  |  |  |
Interest bearing |  |  | 485.7 |  |  |  | 712.9 |
Other deposits |  |  | 228.0 |  |  |  | 187.4 |
|  | $ | 7,308.0 |  |  | $ | 5,519.7 |
Weighted-average interest rate: |  |  |  |  |  |
Interest bearing deposit accounts |  |  | 1.52 | % |  |  | 0.50 | %

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- Definition Banking and thrifts. + References No definition available. + Details
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- Definition Tabular disclosure of type of deposit liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (a) -Publisher SEC Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (a) -Subparagraph (1) -Publisher SEC Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (a) -Subparagraph (2) -Publisher SEC Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (a) -Subparagraph (3) -Publisher SEC Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (a) -Subparagraph (4) -Publisher SEC Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (a) -Subparagraph (5) -Publisher SEC Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (c) -Publisher SEC Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (d) -Publisher SEC Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (e) -Publisher SEC Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (1) -Publisher SEC Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (2) -Publisher SEC Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (2)(i) -Publisher SEC Reference 13: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (2)(i)(ii) -Publisher SEC Reference 14: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (2)(i)(iii) -Publisher SEC Reference 15: http://www.xbrl.org/2009/role/commonPracticeRef -Name Regulation S-K (SK) -Number 229 -Section 1406 -Paragraph (f) -Subparagraph (2)(i)(iv) -Publisher SEC + Details
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