XML 90 R66.htm IDEA: XBRL DOCUMENT
v3.19.1

Mortgage Servicing Rights and Related Liabilities - UPB and Related Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Servicing Assets at Fair Value [Line Items] |  |
Mortgage servicing rights at fair value | $ 3,665 |
Mortgage Servicing Rights |  |
Servicing Assets at Fair Value [Line Items] |  |
Principal amount outstanding on mortgage servicing rights | 295,481 |
Mortgage servicing rights at fair value | 3,665 |
Mortgage Servicing Rights | Credit sensitive |  |
Servicing Assets at Fair Value [Line Items] |  |
Principal amount outstanding on mortgage servicing rights | 135,752 |
Mortgage servicing rights at fair value | 1,495 |
Mortgage Servicing Rights | Interest sensitive |  |
Servicing Assets at Fair Value [Line Items] |  |
Principal amount outstanding on mortgage servicing rights | 159,729 |
Mortgage servicing rights at fair value | $ 2,170 |
Predecessor |  |
Servicing Assets at Fair Value [Line Items] |  |
Mortgage servicing rights at fair value |  | $ 2,937
Predecessor | Mortgage Servicing Rights |  |
Servicing Assets at Fair Value [Line Items] |  |
Principal amount outstanding on mortgage servicing rights |  | 281,380
Mortgage servicing rights at fair value |  | 2,937
Predecessor | Mortgage Servicing Rights | Credit sensitive |  |
Servicing Assets at Fair Value [Line Items] |  |
Principal amount outstanding on mortgage servicing rights |  | 167,605
Mortgage servicing rights at fair value |  | 1,572
Predecessor | Mortgage Servicing Rights | Interest sensitive |  |
Servicing Assets at Fair Value [Line Items] |  |
Principal amount outstanding on mortgage servicing rights |  | 113,775
Mortgage servicing rights at fair value |  | $ 1,365

X
- Definition This is the sum of principal amount outstanding for both securitized and unsecuritized loans of all types. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109247956&loc=d3e107314-111719 + Details
Name: | us-gaap_PrincipalAmountOutstandingOnLoansManagedAndSecuritized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746 + Details
Name: | us-gaap_ServicingAssetAtFairValueAmount
Namespace Prefix: | us-gaap_
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_ServicingAssetsAtFairValueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_ManagingRisksInherentInServicingAssetsAndServicingLiabilitiesByTypeOfRiskAxis=us-gaap_CreditRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ManagingRisksInherentInServicingAssetsAndServicingLiabilitiesByTypeOfRiskAxis=us-gaap_InterestRateRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_PredecessorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |