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Mortgage Servicing (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) state	Dec. 31, 2022 USD ($) state
Mortgage Servicing [Line Items]
Escrow deposit	$ 1,600,000	$ 1,700,000
Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Escrow deposit	1,500,000	1,500,000
MSRs
Mortgage Servicing [Line Items]
Product Concentrations, UPB	$ 30,983,455	$ 27,998,029
MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	100.00%	100.00%
Texas | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	11.00%	11.00%
New York | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	11.00%	11.00%
California | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	8.00%	8.00%
North Carolina | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	8.00%	8.00%
Georgia | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	6.00%	6.00%
Florida | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	6.00%	5.00%
New Jersey | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	5.00%	5.00%
Illinois | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	4.00%	4.00%
Other | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	41.00%	42.00%
Number of states | state	0	0
Fannie Mae | MSRs
Mortgage Servicing [Line Items]
Product Concentrations, UPB	$ 21,264,578	$ 19,038,124
Fannie Mae | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	69.00%	68.00%
Freddie Mac | MSRs
Mortgage Servicing [Line Items]
Product Concentrations, UPB	$ 5,181,933	$ 5,153,207
Freddie Mac | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	17.00%	18.00%
Private Label | MSRs
Mortgage Servicing [Line Items]
Product Concentrations, UPB	$ 2,510,449	$ 2,074,859
Private Label | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	8.00%	8.00%
FHA | MSRs
Mortgage Servicing [Line Items]
Product Concentrations, UPB	$ 1,359,624	$ 1,155,893
FHA | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	4.00%	4.00%
Bridge | MSRs
Mortgage Servicing [Line Items]
Product Concentrations, UPB	$ 379,425	$ 301,182
Bridge | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	1.00%	1.00%
SFR - Fixed Rate | MSRs
Mortgage Servicing [Line Items]
Product Concentrations, UPB	$ 287,446	$ 274,764
SFR - Fixed Rate | MSRs | Fee-based servicing portfolio
Mortgage Servicing [Line Items]
Product and Geographic Concentrations, % of Total	1.00%	1.00%

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- Definition

Number of states accounted for more than 4% of unpaid principal balance and related servicing revenues.

+ References

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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.

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- Definition

The percentage of unpaid principal balance to total unpaid principal balance as of the balance sheet date.

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- Definition

The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 440
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480327/954-440-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

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- Definition

This is the result of the principal amount outstanding of total loans managed or securitized less securitized loans and loans that are in the process of being securitized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Subparagraph (a)
-Paragraph 4
-SubTopic 20
-Topic 860
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481326/860-20-50-4

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