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Securitizations and Financings - Securitization Trusts (Details) - USD ($) $ in Millions | Mar. 31, 2019 | Dec. 31, 2018
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Variable Interest Entities and Securitizations [Abstract] |  |
Total collateral balances | $ 1,811 | $ 1,873
Total certificate balances | 1,757 | 1,817
Unconsolidated securitization trusts | $ 252 | $ 285

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- Definition Qualitative and Quantitative Information, Transferor's Continuing Involvement, Certificate Balances + References No definition available. + Details
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- Definition Qualitative and Quantitative Information, Transferor's Continuing Involvement, Collateral Balances + References No definition available. + Details
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- Definition Variable Interest Entities and Securitizations + References No definition available. + Details
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- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 + Details
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