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Mortgage Servicing Rights ("MSRs") and Related Liabilities - Servicing Revenue (Details) - USD ($) $ in Millions | 1 Months Ended | 2 Months Ended | 3 Months Ended | 7 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | ---
Jul. 31, 2018 | Sep. 30, 2018 | Sep. 30, 2017 | Jul. 31, 2018 | Sep. 30, 2017
Mortgage Servicing Rights [Line Items] |  |  |  |  |
Contractually specified servicing fees |  | $ 163 |  |  |
Other service-related income |  | 18 |  |  |
Incentive and modification income |  | 8 |  |  |
Late fees |  | 14 |  |  |
Reverse servicing fees |  | 13 |  |  |
Mark-to-market adjustments |  | 24 |  |  |
Counterparty revenue share |  | (26) |  |  |
Amortization, net of accretion |  | (31) |  |  |
Total servicing revenue |  | $ 183 |  |  |
Predecessor |  |  |  |  |
Mortgage Servicing Rights [Line Items] |  |  |  |  |
Contractually specified servicing fees | $ 79 |  | $ 251 | $ 574 | $ 759
Other service-related income | 10 |  | 40 | 66 | 126
Incentive and modification income | 4 |  | 19 | 37 | 63
Late fees | 7 |  | 22 | 53 | 67
Reverse servicing fees | 4 |  | 16 | 37 | 43
Mark-to-market adjustments | 25 |  | (44) | 196 | (160)
Counterparty revenue share | (16) |  | (53) | (111) | (174)
Amortization, net of accretion | (16) |  | (60) | (112) | (187)
Total servicing revenue | $ 97 |  | $ 191 | $ 740 | $ 537

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- Definition Mortgage Servicing Rights [Line Items] + References No definition available. + Details
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- Definition Servicing Fee Income, Counter Party Revenue Share + References No definition available. + Details
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- Definition Servicing Fee Income, Net + References No definition available. + Details
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- Definition All amounts that, per contract, are due to the servicer in exchange for servicing the financial asset and would no longer be received by a servicer if the beneficial owners of the serviced assets (or their trustees or agents) were to exercise their actual or potential authority under the contract to shift the servicing to another servicer. Depending on the servicing contract, those fees may include some or all of the difference between the interest rate collected on the asset being serviced and the rate to be paid to the beneficial owners of the asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122596-111746 + Details
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- Definition All amounts that are due to the servicer of a financial asset as a result of the debt holder not meeting the monthly payment terms. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122596-111746 + Details
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- Details
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