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Borrowings - Other Financing Facilities (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Line of Credit Facility [Line Items]
Early Buyout Financing Facility	$ 423,831,000	$ 672,882,000
Funding Facility
Line of Credit Facility [Line Items]
Line Amount	16,325,000,000
Committed Line Amount	1,875,000,000
Line of Credit Financing Facilities	5,236,034,000	3,548,699,000
Revolving Credit Facility and Security Agreement
Line of Credit Facility [Line Items]
Line Amount	75,000,000
Committed Line Amount	75,000,000
Line of Credit Financing Facilities	$ 18,300,000	$ 0
Revolving Credit Facility and Security Agreement | Base rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%	1.00%
Revolving Credit Facility and Security Agreement | Base rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.80%	1.85%
Revolving Credit Facility and Security Agreement | Personal Loans Held for Sale Maturing Jan 30 2025
Line of Credit Facility [Line Items]
Line Amount	$ 75,000,000
Committed Line Amount	75,000,000
Line of Credit Financing Facilities	18,300,000	$ 0
Line of Credit Financing Facilities
Line of Credit Facility [Line Items]
Line Amount	4,800,000,000
Committed Line Amount	1,250,000,000
Line of Credit Financing Facilities	$ 0	$ 0
Line of Credit Financing Facilities | Base rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.45%	1.45%
Line of Credit Financing Facilities | Base rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	4.00%	4.00%
Line of Credit | Unsecured line of credit, maturing Jul 27 2025, RHI | Affiliated entity
Line of Credit Facility [Line Items]
Line Amount	$ 2,000,000,000
Committed Line Amount	0
Line of Credit Financing Facilities	0	$ 0
Line of Credit | Unsecured line of credit, maturing Jul 31 2025, RHI | Affiliated entity
Line of Credit Facility [Line Items]
Line Amount	100,000,000
Committed Line Amount	0
Line of Credit Financing Facilities	0	0
Line of Credit | MSRs line of credit, maturing Oct 20 2023
Line of Credit Facility [Line Items]
Line Amount	200,000,000
Committed Line Amount	0
Line of Credit Financing Facilities	0	0
Line of Credit | MSRs line of credit, maturing Sep 9 2024
Line of Credit Facility [Line Items]
Line Amount	1,500,000,000
Committed Line Amount	250,000,000
Line of Credit Financing Facilities	0	0
Revolving Credit Facility | Revolving credit facility due Aug 10 2025
Line of Credit Facility [Line Items]
Line Amount	1,000,000,000
Committed Line Amount	1,000,000,000
Line of Credit Financing Facilities	0	0
Early Buyout Financing Facility
Line of Credit Facility [Line Items]
Line Amount	1,500,000,000
Committed Line Amount	0
Early Buyout Financing Facility	$ 423,831,000	$ 672,882,000
Early Buyout Financing Facility | Base rate | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.45%	1.45%
Early Buyout Financing Facility | Base rate | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate	4.00%	4.00%

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Line Of Credit Facility, Committed Amount

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of long-term debt classified as other.

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