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Derivative Instruments - Summary of Location and Amount of Gains and Losses of Derivative Contracts (Detail) - Successor [Member] - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Derivative instruments, gain (loss) recognized in income, net, Total | $ 9,086 | $ (216,962)
Net Change in Fair Value of Credit Derivatives [Member] | Credit Derivatives [Member] | Financial Guarantee [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Derivative instruments, gain (loss) recognized in income, net, Total | 1,052 | 12,866
Derivative Products [Member] | Financial Services Derivatives Products [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Derivative instruments, gain (loss) recognized in income, net, Total | (1,514) | (83,424)
Derivative Products [Member] | Interest Rate Swap [Member] | Financial Services Derivatives Products [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Derivative instruments, gain (loss) recognized in income, net, Total | 108 | (77,107)
Derivative Products [Member] | Futures Contracts [Member] | Financial Services Derivatives Products [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Derivative instruments, gain (loss) recognized in income, net, Total | (1,622) | (6,317)
Income Loss On Variable Interest Entities [Member] | Variable Interest Entity [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Derivative instruments, gain (loss) recognized in income, net, Total | 9,548 | (146,404)
Income Loss On Variable Interest Entities [Member] | Interest Rate Swap [Member] | Variable Interest Entity [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Derivative instruments, gain (loss) recognized in income, net, Total | 14,496 | (158,343)
Income Loss On Variable Interest Entities [Member] | Currency Swaps [Member] | Variable Interest Entity [Member] |  |
Schedule of Trading Securities and Other Trading Assets [Line Items] |  |
Derivative instruments, gain (loss) recognized in income, net, Total | $ (4,948) | $ 11,939

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 + Details
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- 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
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