Residential Loans at Fair Value - Additional Information (Detail) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($)
Receivables [Abstract]
Concentrations Threshold For State Concentrations Of Residential Loans	5.00%
Purchased and Originated Loans, Credit Risk Typical Holding Period	20 days
Repurchased loans held	$ 4.4

The amount of mortgage loans that have been repurchased by the Company and are recorded as an asset on the balance sheet.

No definition available.

Name:	wac_LoansReceivableRepurchasedAmount
Namespace Prefix:	wac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant