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Mortgage Servicing - Summary of Delinquency Status of Loans Underlying Mortgage Servicing Rights (Details) - USD ($) $ in Billions	Jun. 30, 2025	Dec. 31, 2024
Participating Mortgage Loans [Line Items]
Assets serviced	$ 181.5	$ 170.3
Percent of aggregate unpaid principal balance	5.70%	6.50%
Financial Asset, 30 to 59 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Percent of aggregate unpaid principal balance	3.00%	3.10%
Financial Asset, 60 to 89 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Percent of aggregate unpaid principal balance	0.90%	1.10%
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Percent of aggregate unpaid principal balance	1.80%	2.30%
Fair Value Non-Agency Mortgage Servicing Rights
Participating Mortgage Loans [Line Items]
Assets serviced	$ 20.5	$ 21.6
Percent of aggregate unpaid principal balance	17.60%	18.70%
Fair Value Non-Agency Mortgage Servicing Rights | Financial Asset, 30 to 59 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Percent of aggregate unpaid principal balance	8.60%	8.40%
Fair Value Non-Agency Mortgage Servicing Rights | Financial Asset, 60 to 89 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Percent of aggregate unpaid principal balance	2.80%	3.40%
Fair Value Non-Agency Mortgage Servicing Rights | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Percent of aggregate unpaid principal balance	6.20%	6.90%
Fair Value GSE Mortgage Servicing Rights
Participating Mortgage Loans [Line Items]
Assets serviced	$ 139.6	$ 129.3
Percent of aggregate unpaid principal balance	1.70%	1.80%
Fair Value GSE Mortgage Servicing Rights | Financial Asset, 30 to 59 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Percent of aggregate unpaid principal balance	1.00%	1.00%
Fair Value GSE Mortgage Servicing Rights | Financial Asset, 60 to 89 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Percent of aggregate unpaid principal balance	0.20%	0.20%
Fair Value GSE Mortgage Servicing Rights | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Percent of aggregate unpaid principal balance	0.40%	0.50%
Fair Value GNMA Mortgage Servicing Rights
Participating Mortgage Loans [Line Items]
Assets serviced	$ 21.4	$ 19.4
Percent of aggregate unpaid principal balance	9.80%	11.80%
Fair Value GNMA Mortgage Servicing Rights | Financial Asset, 30 to 59 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Percent of aggregate unpaid principal balance	5.00%	5.40%
Fair Value GNMA Mortgage Servicing Rights | Financial Asset, 60 to 89 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Percent of aggregate unpaid principal balance	1.60%	1.80%
Fair Value GNMA Mortgage Servicing Rights | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Percent of aggregate unpaid principal balance	3.20%	4.50%

X

- Definition

Total of property assets serviced as measured by UPB.

+ References

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X

- Definition

Percentage of financing receivable balance that is past due.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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