Transactions with Affiliates - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Related Party Transaction [Line Items]
Service related, net	$ 84
New Residential
Related Party Transaction [Line Items]
Fees paid		$ 53
Revenue recognized from servicing agreements		1
Agency MSRs | Subsidiary of New Residential | Loan Subservicing Agreement
Related Party Transaction [Line Items]
Service related, net		$ 19