XML 72 R47.htm IDEA: XBRL DOCUMENT
v3.20.2

Reverse Mortgage Interests, Net - Schedule of Reverse Mortgage Interest (Details) - USD ($) $ in Millions | Sep. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | --- | --- | --- | --- | ---
Reverse Mortgage Interests [Abstract] |  |  |  |  |  |
Participating interests in HECM mortgage-backed securities (“HMBS”) | $ 3,663 |  | $ 4,282 |  |  |
Other interests securitized | 1,002 |  | 994 |  |  |
Unsecuritized interests | 920 |  | 1,117 |  |  |
Purchase discount, net | (125) | $ (127) | (114) | $ (124) | $ (163) | $ (164)
Total reverse mortgage interests, net | $ 5,460 |  | $ 6,279 |  |  |

X
- Definition Reverse funded loan advances + References No definition available. + Details
Name: | nsm_ReverseFundedLoanAdvances
Namespace Prefix: | nsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reverse Mortgage Interest Subject to Non-Recourse Debt + References No definition available. + Details
Name: | nsm_ReverseMortgageInterestSubjecttoNonRecourseDebt
Namespace Prefix: | nsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reverse Mortgage Interest, Unpaid Principal Balance, Other Interests Securitized + References No definition available. + Details
Name: | nsm_ReverseMortgageInterestUnpaidPrincipalBalanceOtherInterestsSecuritized
Namespace Prefix: | nsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reverse Mortgage Interest, Unpaid Principal Balance, Purchase Discount, Net + References No definition available. + Details
Name: | nsm_ReverseMortgageInterestUnpaidPrincipalBalancePurchaseDiscountNet
Namespace Prefix: | nsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reverse Mortgage Interest, Unpaid Principal Balance, Unsecuritized + References No definition available. + Details
Name: | nsm_ReverseMortgageInterestUnpaidPrincipalBalanceUnsecuritized
Namespace Prefix: | nsm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reverse Mortgage Interests [Abstract] + References No definition available. + Details
Name: | nsm_ReverseMortgageInterestsAbstract
Namespace Prefix: | nsm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration