XML 81 R79.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Mortgage Loans Held for Sale and Investment - Held For Sale (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Jul. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Mortgage loans held for sale - UPB | $ 3,949 | $ 1,568 |  |
Mark-to-market adjustment | 128 | 63 |  |
Total mortgage loans held for sale | 4,077 | 1,631 | $ 1,514 | $ 1,891
UPB | 29 | 45 |  |
Fair Value | 22 | 42 |  |
Ginnie Mae Repurchased Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
UPB | $ 25 | $ 40 |  |

X
- Definition Fair Value, Mortgage Loans Held for Sale non-accrual status + References No definition available. + Details
Name: | nsm_FairValueMortgageLoansHeldforSalenonaccrualstatus
Namespace Prefix: | nsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Loans Held-for-Sale, Mortgages, Fair Value Adjustment + References No definition available. + Details
Name: | nsm_LoansHeldForSaleMortgagesFairValueAdjustment
Namespace Prefix: | nsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Loans Held-for-Sale, Mortgages, Unpaid Principal Balance + References No definition available. + Details
Name: | nsm_LoansHeldForSaleMortgagesUnpaidPrincipalBalance
Namespace Prefix: | nsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Mortgage Loans Held for Sale, Nonaccrual Basis Unpaid Principal Balance + References No definition available. + Details
Name: | nsm_MortgageLoansHeldforSaleNonaccrualBasisUnpaidPrincipalBalance
Namespace Prefix: | nsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The face amount of loans that will be sold to other entities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansReceivableHeldForSaleAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=nsm_GinnieMaeRepurchasedLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |