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Fair Value - Summary of Reconciliation of the Changes in Fair Value of Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings |  | $ 153,500 |  | $ 4,500 |  | $ 78,300
Loans Held for Investment [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 4,715,831 |  | 3,565,716 |  | 2,488,253
Purchases, issuances, sales and settlements |  |  |  |  |  |
Purchases |  | 0 |  | 0 |  | 0
Issuances |  | 920,476 | [1] | 1,277,615 |  | 1,107,046
Sales |  | 0 |  | 0 |  | 0
Settlements | [1] | (400,521) |  | (444,388) |  | (243,596)
Loans held for sale, at fair value |  | (1,039) |  | (3,803) |  |
Receivables, net |  | (158) |  | (3,583) |  |
Other assets |  | (411) |  | (1,929) |  |
Purchases, issuances, sales and settlements, total |  | 518,347 |  | 823,912 |  | 863,450
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings |  | 238,021 | [1],[2] | 326,203 | [2] | 214,013
Included in Other comprehensive income |  | 0 |  | 0 |  | 0
Included in earnings and other comprehensive income |  | 238,021 | [2] | 326,203 | [2] | 214,013
Transfers in and / or out of Level 3 |  | 0 |  | 0 |  | 0
Ending balance |  | 5,472,199 |  | 4,715,831 |  | 3,565,716
Loans Held for Investment [Member] | Level 3 [Member] | Calls and Other [Member] |  |  |  |  |  |
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings | [1],[2] | 0 |  |  |  |
HMBS - Related Borrowings [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning balance |  | (4,601,556) |  | (3,433,781) |  | (2,391,362)
Purchases, issuances, sales and settlements |  |  |  |  |  |
Purchases |  | 0 |  | 0 |  | 0
Issuances |  | (948,917) | [1] | (1,281,543) |  | (1,086,795)
Sales |  | 0 |  | 0 |  | 0
Settlements | [1] | 391,985 |  | 418,503 |  | 230,045
Loans held for sale, at fair value |  | 0 |  |  |  |
Receivables, net |  | 0 |  |  |  |
Other assets |  | 0 |  |  |  |
Purchases, issuances, sales and settlements, total |  | (556,932) |  | (863,040) |  | (856,750)
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings |  | (221,960) | [1],[2] | (304,735) | [2] | (185,669)
Included in Other comprehensive income |  | 0 |  | 0 |  | 0
Included in earnings and other comprehensive income |  | (221,960) | [2] | (304,735) | [2] | (185,669)
Transfers in and / or out of Level 3 |  | 0 |  | 0 |  | 0
Ending balance |  | (5,380,448) |  | (4,601,556) |  | (3,433,781)
HMBS - Related Borrowings [Member] | Level 3 [Member] | Calls and Other [Member] |  |  |  |  |  |
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings | [1],[2] | 0 |  |  |  |
Loans Held for Investments - Restricted for Securitization Investors [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 0 |  |  |  |
Purchases, issuances, sales and settlements |  |  |  |  |  |
Purchases |  | 0 |  |  |  |
Issuances |  | 0 |  |  |  |
Consolidation of mortgage-backed securitization trusts |  | 28,373 |  |  |  |
Sales |  | 0 |  |  |  |
Settlements |  | (1,853) |  |  |  |
Purchases, issuances, sales and settlements, total |  | 26,520 |  |  |  |
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Ending balance |  | 26,520 |  | 0 |  |
Financing Liability Owed to Securitization Investors [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 0 |  |  |  |
Purchases, issuances, sales and settlements |  |  |  |  |  |
Purchases |  | 0 |  |  |  |
Issuances |  | 0 |  |  |  |
Consolidation of mortgage-backed securitization trusts |  | (26,643) |  |  |  |
Sales |  | 0 |  |  |  |
Settlements |  | 1,828 |  |  |  |
Purchases, issuances, sales and settlements, total |  | (24,815) |  |  |  |
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Ending balance |  | (24,815) |  | 0 |  |
Mortgage Backed Securities [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 1,592 |  | 8,342 |  | 7,985
Purchases, issuances, sales and settlements |  |  |  |  |  |
Purchases |  | 0 |  | 0 |  | 0
Issuances |  | 0 | [1] | 0 |  | 0
Sales |  | 0 |  | 0 |  | 0
Settlements | [1] | 0 |  | 0 |  | 0
Transfer from MSRs carried at amortized cost |  | 0 |  |  |  |
Loans held for sale, at fair value |  | 0 |  |  |  |
Receivables, net |  | 0 |  |  |  |
Other assets |  | 0 |  |  |  |
Purchases, issuances, sales and settlements, total |  | 0 |  | 0 |  | 0
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings |  | (90) | [1],[2] | (6,750) | [2] | 357
Included in Other comprehensive income |  | 0 |  | 0 |  | 0
Included in earnings and other comprehensive income |  | (90) | [2] | (6,750) | [2] | 357
Transfers in and / or out of Level 3 |  | 0 |  | 0 |  | 0
Ending balance |  | 1,502 |  | 1,592 |  | 8,342
Mortgage Backed Securities [Member] | Level 3 [Member] | Calls and Other [Member] |  |  |  |  |  |
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings | [1],[2] | 0 |  |  |  |
Financing Liability - MSRs Pledged [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning balance |  | (508,291) |  | (477,707) |  | (541,704)
Purchases, issuances, sales and settlements |  |  |  |  |  |
Purchases |  | (667) |  | 0 |  | 0
Recognized (assumed) in connection with the acquisition of PHH |  | (481,020) |  |  |  |
Issuances |  | (279,586) | [1] | (54,601) |  | 0
Consolidation of mortgage-backed securitization trusts |  | 0 |  |  |  |
Sales |  | 0 |  | 0 |  | 0
Settlements | [1] | 211,766 |  | 59,190 |  | 63,997
Transfer from MSRs carried at amortized cost |  | 0 |  |  |  |
Loans held for sale, at fair value |  | 0 |  |  |  |
Receivables, net |  | 0 |  |  |  |
Other assets |  | 0 |  |  |  |
Purchases, issuances, sales and settlements, total |  | (549,507) |  | 4,589 |  | 63,997
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings |  | 19,269 | [1],[2] | (41,282) | [2] | 0
Included in Other comprehensive income |  | 0 |  | 0 |  | 0
Included in earnings and other comprehensive income |  | 24,942 | [2] | (35,173) | [2] | 0
Transfers in and / or out of Level 3 |  | 0 |  | 0 |  | 0
Ending balance |  | (1,032,856) |  | (508,291) |  | (477,707)
Financing Liability - MSRs Pledged [Member] | Level 3 [Member] | Calls and Other [Member] |  |  |  |  |  |
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings | [1],[2] | 5,673 |  | 6,109 |  |
Derivatives [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 2,056 |  | 1,836 |  | 2,042
Purchases, issuances, sales and settlements |  |  |  |  |  |
Purchases |  | 95 |  | 655 |  | 1,337
Issuances |  | 0 | [1] | 0 |  | 0
Consolidation of mortgage-backed securitization trusts |  | 0 |  |  |  |
Sales |  | 0 |  | 0 |  | 0
Settlements | [1] | (371) |  | (445) |  | (156)
Loans held for sale, at fair value |  | 0 |  |  |  |
Receivables, net |  | 0 |  |  |  |
Other assets |  | 0 |  |  |  |
Purchases, issuances, sales and settlements, total |  | (276) |  | 210 |  | 1,181
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings |  | (1,102) | [1],[2] | 10 | [2] | (1,387)
Included in Other comprehensive income |  | 0 |  | 0 |  | 0
Included in earnings and other comprehensive income |  | (1,102) | [2] | 10 | [2] | (1,387)
Transfers in and / or out of Level 3 |  | 0 |  | 0 |  | 0
Ending balance |  | 678 |  | 2,056 |  | 1,836
Derivatives [Member] | Level 3 [Member] | Calls and Other [Member] |  |  |  |  |  |
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings | [1],[2] | 0 |  |  |  |
Mortgage Servicing Rights [Member] | Level 3 [Member] |  |  |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Beginning balance |  | 671,962 |  | 679,256 |  | 761,190
Purchases, issuances, sales and settlements |  |  |  |  |  |
Purchases |  | 13,712 |  | 0 |  | 0
Recognized (assumed) in connection with the acquisition of PHH |  | 518,127 |  |  |  |
Issuances |  | 0 | [1] | (2,214) |  | (1,548)
Consolidation of mortgage-backed securitization trusts |  | 0 |  |  |  |
Sales |  | (6,240) |  | (540) |  | (148)
Settlements | [1] | (5,880) |  | 0 |  | 0
Transfer from MSRs carried at amortized cost |  | 418,925 |  |  |  |
Loans held for sale, at fair value |  | 0 |  |  |  |
Receivables, net |  | 0 |  |  |  |
Other assets |  | 0 |  |  |  |
Purchases, issuances, sales and settlements, total |  | 938,644 |  | (2,754) |  | (1,696)
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings |  | (153,457) | [1],[2] | (4,540) | [2] | (80,238)
Included in Other comprehensive income |  | 0 |  | 0 |  | 0
Included in earnings and other comprehensive income |  | (153,457) | [2] | (4,540) | [2] | (80,238)
Transfers in and / or out of Level 3 |  | 0 |  | 0 |  | 0
Ending balance |  | 1,457,149 |  | $ 671,962 |  | $ 679,256
Mortgage Servicing Rights [Member] | Level 3 [Member] | Calls and Other [Member] |  |  |  |  |  |
Total realized and unrealized gains and (losses): |  |  |  |  |  |
Included in earnings | [1],[2] | $ 0 |  |  |  |
[1] | On January 18, 2018, Ocwen received a lump-sum payment of $279.6 million in accordance with terms of the agreements with NRZ. A $16.6 million reduction in the fair value of the Financing Liability - MSRs Pledged was recognized in connection with the receipt of the lump-sum payment. See Note 9 — Rights to MSRs.
[2] | On September 1, 2017, Ocwen transferred MSRs with UPB of $15.9 billion to NRZ and received a lump-sum payment of $54.6 million. A reduction in the fair value of the Financing Liability - MSRs Pledged of $37.6 million was recognized at the time of the initial transfer of the MSRs. See Note 9 — Rights to MSRs.

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