Advances and Other Receivables - Schedule of Accounts Receivable (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Receivables [Abstract]
Servicing advances, net of $13 and $12 purchase discount, respectively	$ 1,065	$ 1,053
Receivables from agencies, investors and prior servicers, net of $6 and $7 purchase discount	101	103
Reserves	(170)	(137)
Total advances and other receivables, net	996	1,019
Servicing advances discount	13	12	$ 19
Receivable discount	$ 6	$ 7	$ 12

Disclosure of the unamortized amount of the discount on the note or receivable which is deducted from the face amount of the receivable or loan. The discount or premium is the difference between the present value and the face amount.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482925/835-30-45-1A

Name:	us-gaap_ReceivableWithImputedInterestDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant