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Non-consolidated variable interest entities - Additional Information (Details) $ in Millions | 6 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) NumberOfVIE | Dec. 31, 2018 USD ($) | Mar. 31, 2013 USD ($) | Sep. 30, 2011 USD ($)
Variable Interest Entity |  |  |  |
Number of VIEs | NumberOfVIE | 3 |  |  |
PRLP 2011 Holding, LLC |  |  |  |
Variable Interest Entity |  |  |  |
Equity Method Investment Ownership Percentage | 24.90% |  |  | 24.90%
Cash Received From Investee |  |  |  | $ 48
PR Asset Portfolio 2013-1 International, LLC |  |  |  |
Variable Interest Entity |  |  |  |
Equity Method Investment Ownership Percentage | 24.90% |  | 24.90% |
Cash Received From Investee |  |  | $ 92 |
FNMA, GNMA, FHLMC VIE |  |  |  |
Variable Interest Entity |  |  |  |
Principal Amount Outstanding on Loans Securitized or Asset-backed Financing Arrangement | $ 10,100 | $ 10,600 |  |

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- Definition This is the principal amount outstanding for securitized loans only (across all types of loans). + 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
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- Definition Number of Variable Interest Entities (VIE) or potential VIEs for which the necessary information is unable to be obtained to: (1) determine whether the legal entity is a VIE, (2) determine whether it (the reporting entity) is the VIE's primary beneficiary, or (3) perform the accounting required to consolidate the VIE for which it is determined that it (the reporting entity) is the primary beneficiary. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=108788376&loc=d3e5747-111685 + Details
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