Supplemental Disclosures of Cash Flow Information - Summary of Supplemental Disclosures of Cash Flow Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Supplemental Disclosure of Cash Flow Information
Cash paid for interest	$ 63,517us-gaap_InterestPaid	$ 66,188us-gaap_InterestPaid
Cash refund received for taxes	1,071wac_CashPaidorRefundReceivedforTaxes	24,513wac_CashPaidorRefundReceivedforTaxes
Supplemental Disclosure of Non-Cash Investing and Financing Activities
Real estate owned acquired through foreclosure	29,467us-gaap_TransferToOtherRealEstate	28,960us-gaap_TransferToOtherRealEstate
Residential loans originated to finance the sale of real estate owned	9,991	15,833
Acquisition of servicing rights	10,969wac_AcquisitionOfMsrPoolNoncash	174,991wac_AcquisitionOfMsrPoolNoncash
Capitalized Servicing Rights [Member]
Supplemental Disclosure of Non-Cash Investing and Financing Activities
Servicing rights capitalized upon sales of loans	$ 72,301	$ 52,613

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The amount of cash paid for interest during the period.

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-Publisher FASB

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Mortgage loan related to property sales in noncash investing and financing activities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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The value of new servicing assets, subsequently measured at fair value, acquired or created during the current period through purchases or from transfers of financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Value transferred from mortgage loans to real estate owned (REO) in noncash transactions.

+ References

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- Definition

Acquisition of MSR pool noncash.

+ References

No definition available.

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Cash Paid or Refund Received for Taxes

+ References

No definition available.

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