Fair Value Measurements - Information about Valuation Inputs for Variable Interest Entity Assets and Liabilities Classified as Level 3 (Detail) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Dec. 31, 2013

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Currency Translation, Weighted Average Risk Free Discount Rate

2.60%

2.70%

Successor [Member] | Asset-backed Securities [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Inputs Coupon Rate

5.93%

Fair Value Inputs Maturity

17 years 8 months 25 days

Fair Value Inputs Yield

13.50%

Fair Value, Inputs, Level 3 [Member] | European ABS Transactions [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Of Consolidated Variable Interest Entity Debt Obligations Valued Using Unobservable Inputs By Asset Class

$ 2,551,278

$ 3,016,966

Fair Value, Inputs, Level 3 [Member] | US Commercial ABS Transaction [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Of Consolidated Variable Interest Entity Debt Obligations Valued Using Unobservable Inputs By Asset Class

30,942

163,204

Fair Value, Inputs, Level 3 [Member] | Successor [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability

11,369,112

11,497,098

$ 13,845,454

$ 14,253,705

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Earnings

870,935

(545,308)

1,221,057

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Other Comprehensive Income Loss

(1,892,948)

(739,919)

(822,098)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Purchases

99,018

359,193

124,013

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Issues

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Sales

(59,878)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Settlements

(51,254)

(344,865)

(403,576)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Into Level Three

108,365

(752,334)

188,241

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Out Of Level Three

737,898

3,888

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Deconsolidation Of Vies

(325,123)

(659,898)

Fair Value Asset Or Liability Measured On Recurring Basis Change In Unrealized Gains Losses Still Held

815,358

(607,235)

1,207,070

Fair Value, Inputs, Level 3 [Member] | Successor [Member] | Investments [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability

762,703

488,884

198,201

67,783

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Earnings

54,600

30,083

11,057

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Other Comprehensive Income Loss

40,518

(73,559)

(541)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Purchases

99,018

359,193

54,013

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Issues

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Sales

(59,878)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Settlements

(28,682)

(25,034)

(62,266)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Into Level Three

108,365

188,241

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Out Of Level Three

(208)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Deconsolidation Of Vies

Fair Value Asset Or Liability Measured On Recurring Basis Change In Unrealized Gains Losses Still Held

Fair Value, Inputs, Level 3 [Member] | Successor [Member] | Other Assets [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability

7,382

8,696

12,036

13,384

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Earnings

(1,314)

(1,635)

(1,348)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Other Comprehensive Income Loss

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Purchases

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Issues

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Sales

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Settlements

(1,705)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Into Level Three

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Out Of Level Three

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Deconsolidation Of Vies

Fair Value Asset Or Liability Measured On Recurring Basis Change In Unrealized Gains Losses Still Held

(1,314)

(1,635)

(1,348)

Fair Value, Inputs, Level 3 [Member] | Successor [Member] | Derivative Financial Instruments, Liabilities [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability

(100,282)

(99,192)

(215,346)

(186,934)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Earnings

(15,374)

16,571

(45,392)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Other Comprehensive Income Loss

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Purchases

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Issues

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Sales

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Settlements

14,284

11,365

16,980

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Into Level Three

88,218

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Out Of Level Three

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Deconsolidation Of Vies

Fair Value Asset Or Liability Measured On Recurring Basis Change In Unrealized Gains Losses Still Held

(16,351)

$ (25,980)

(53,509)

Loan Origination Commitments [Member] | Fair Value, Inputs, Level 3 [Member] | Successor [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Deconsolidation Of Vies

Long-term Debt [Member] | Fair Value, Inputs, Level 3 [Member] | Successor [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Deconsolidation Of Vies

Investment Contracts [Member] | Fair Value, Inputs, Level 3 [Member] | Successor [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Deconsolidation Of Vies

$ 0

Variable Interest Entity, Primary Beneficiary [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Currency Translation, Weighted Average Risk Free Discount Rate

3.60%

4.40%

Variable Interest Entity, Primary Beneficiary [Member] | Successor [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Asset Or Liability Measured On Recurring Basis Change In Unrealized Gains Losses Still Held

$ 833,023

$ (579,620)

1,261,927

Variable Interest Entity, Primary Beneficiary [Member] | Successor [Member] | European ABS Transactions [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Inputs Coupon Rate

0.46%

1.38%

Fair Value Inputs Maturity

16 years 1 month 28 days

16 years 4 months 39 days

Fair Value Inputs Yield

4.95%

6.08%

Variable Interest Entity, Primary Beneficiary [Member] | Successor [Member] | US Commercial ABS Transaction [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Inputs Coupon Rate

5.88%

Fair Value Inputs Maturity

20 years 8 months 68 days

21 years 9 months 22 days

Fair Value Inputs Yield

5.86%

9.14%

Variable Interest Entity, Primary Beneficiary [Member] | Loan Origination Commitments [Member] | Fair Value, Inputs, Level 3 [Member] | Successor [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability

$ 10,658,963

$ 11,690,324

12,371,177

13,398,895

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Earnings

1,166,898

569,617

1,118,084

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Other Comprehensive Income Loss

(1,944,821)

(612,941)

(726,827)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Purchases

70,000

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Issues

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Sales

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Settlements

(253,438)

(312,406)

(792,186)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Into Level Three

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Out Of Level Three

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Deconsolidation Of Vies

(325,123)

(696,789)

Fair Value Asset Or Liability Measured On Recurring Basis Change In Unrealized Gains Losses Still Held

1,166,898

589,634

1,119,219

Variable Interest Entity, Primary Beneficiary [Member] | Long-term Debt [Member] | Fair Value, Inputs, Level 3 [Member] | Successor [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability

(2,582,220)

(3,180,170)

(1,263,664)

(1,514,605)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Earnings

(842,748)

(1,152,681)

(290,457)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Other Comprehensive Income Loss

486,218

93,812

66,515

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Purchases

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Issues

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Sales

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Settlements

216,582

(17,085)

433,896

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Into Level Three

(840,552)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Out Of Level Three

737,898

4,096

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Deconsolidation Of Vies

36,891

Fair Value Asset Or Liability Measured On Recurring Basis Change In Unrealized Gains Losses Still Held

(842,748)

(1,161,991)

(286,405)

Variable Interest Entity, Primary Beneficiary [Member] | Investment Contracts [Member] | Fair Value, Inputs, Level 3 [Member] | Successor [Member]

Fair Value Inputs, Liabilities, Quantitative Information [Line Items]

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability

2,622,566

2,588,556

2,743,050

$ 2,475,182

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Earnings

508,873

(7,263)

429,113

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Gain Loss Included In Other Comprehensive Income Loss

(474,863)

(147,231)

(161,245)

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Purchases

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Issues

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Sales

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Settlements

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Into Level Three

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Transfers Out Of Level Three

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Or Liability Deconsolidation Of Vies

Fair Value Asset Or Liability Measured On Recurring Basis Change In Unrealized Gains Losses Still Held

$ 508,873

$ (7,263)

$ 429,113