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Mortgage Servicing - Summary of Delinquency Status of Loans Underlying Mortgage Servicing Rights (Details) - USD ($) $ in Billions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Participating Mortgage Loans [Line Items] |  |
Assets serviced | $ 162.9 | $ 169.7
Percent of aggregate unpaid principal balance | 7.30% | 7.50%
30 days |  |
Participating Mortgage Loans [Line Items] |  |
Percent of aggregate unpaid principal balance | 3.70% | 3.70%
60 days |  |
Participating Mortgage Loans [Line Items] |  |
Percent of aggregate unpaid principal balance | 1.20% | 1.20%
90 days or more |  |
Participating Mortgage Loans [Line Items] |  |
Percent of aggregate unpaid principal balance | 2.50% | 2.60%
Fair Value Non-Agency Mortgage Servicing Rights |  |
Participating Mortgage Loans [Line Items] |  |
Assets serviced | $ 22.4 | $ 23.8
Percent of aggregate unpaid principal balance | 20.20% | 21.20%
Fair Value Non-Agency Mortgage Servicing Rights | 30 days |  |
Participating Mortgage Loans [Line Items] |  |
Percent of aggregate unpaid principal balance | 9.40% | 9.40%
Fair Value Non-Agency Mortgage Servicing Rights | 60 days |  |
Participating Mortgage Loans [Line Items] |  |
Percent of aggregate unpaid principal balance | 3.50% | 3.60%
Fair Value Non-Agency Mortgage Servicing Rights | 90 days or more |  |
Participating Mortgage Loans [Line Items] |  |
Percent of aggregate unpaid principal balance | 7.30% | 8.20%
Fair Value GSE Mortgage Servicing Rights |  |
Participating Mortgage Loans [Line Items] |  |
Assets serviced | $ 122.9 | $ 127.3
Percent of aggregate unpaid principal balance | 2.00% | 1.90%
Fair Value GSE Mortgage Servicing Rights | 30 days |  |
Participating Mortgage Loans [Line Items] |  |
Percent of aggregate unpaid principal balance | 1.30% | 1.20%
Fair Value GSE Mortgage Servicing Rights | 60 days |  |
Participating Mortgage Loans [Line Items] |  |
Percent of aggregate unpaid principal balance | 0.20% | 0.20%
Fair Value GSE Mortgage Servicing Rights | 90 days or more |  |
Participating Mortgage Loans [Line Items] |  |
Percent of aggregate unpaid principal balance | 0.50% | 0.50%
Fair Value GNMA Mortgage Servicing Rights |  |
Participating Mortgage Loans [Line Items] |  |
Assets serviced | $ 17.5 | $ 18.6
Percent of aggregate unpaid principal balance | 12.50% | 11.80%
Fair Value GNMA Mortgage Servicing Rights | 30 days |  |
Participating Mortgage Loans [Line Items] |  |
Percent of aggregate unpaid principal balance | 6.20% | 6.10%
Fair Value GNMA Mortgage Servicing Rights | 60 days |  |
Participating Mortgage Loans [Line Items] |  |
Percent of aggregate unpaid principal balance | 2.00% | 2.00%
Fair Value GNMA Mortgage Servicing Rights | 90 days or more |  |
Participating Mortgage Loans [Line Items] |  |
Percent of aggregate unpaid principal balance | 4.20% | 3.70%

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