Face (par) amount of debt instrument at time of issuance.

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-Topic 835
-SubTopic 30
-Section 45
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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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.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(2)
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- Definition

Amount, after accumulated amortization, of debt premium.

+ References

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-Publisher FASB
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- Definition

Amount of debt for which creditor does not have general recourse to the debtor but rather has recourse only to the property used for collateral in the transaction or other specific property.

+ References

No definition available.

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Indebtedness - Summary of Other Non-Recourse Debt (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Non-recourse debt	$ 7,165
Unamortized debt issuance costs, net of premium, and issuance discount(2)	82
Participating Interest Financing
Debt Instrument [Line Items]
Non-recourse debt	6,021
Trust 2016-2
Debt Instrument [Line Items]
Non-recourse debt	0
Trust 2016-3
Debt Instrument [Line Items]
Non-recourse debt	0
Trust 2017-1
Debt Instrument [Line Items]
Non-recourse debt	151
Trust 2017-2
Debt Instrument [Line Items]
Non-recourse debt	258
Trust 2018-1
Debt Instrument [Line Items]
Non-recourse debt	329
Trust 2018-2
Debt Instrument [Line Items]
Non-recourse debt	292
Legacy Asset
Debt Instrument [Line Items]
Non-recourse debt	32
Other
Debt Instrument [Line Items]
Non-recourse debt	7,083
Nonrecourse debt–legacy assets \| Participating Interest Financing
Debt Instrument [Line Items]
Securitized Amount	0
Nonrecourse debt–legacy assets \| Trust 2016-2
Debt Instrument [Line Items]
Securitized Amount	0
Nonrecourse debt–legacy assets \| Trust 2016-3
Debt Instrument [Line Items]
Securitized Amount	0
Nonrecourse debt–legacy assets \| Trust 2017-1
Debt Instrument [Line Items]
Securitized Amount	193
Nonrecourse debt–legacy assets \| Trust 2017-2
Debt Instrument [Line Items]
Securitized Amount	308
Nonrecourse debt–legacy assets \| Trust 2018-1
Debt Instrument [Line Items]
Securitized Amount	348
Nonrecourse debt–legacy assets \| Trust 2018-2
Debt Instrument [Line Items]
Securitized Amount	298
Nonrecourse debt–legacy assets \| Legacy Asset
Debt Instrument [Line Items]
Securitized Amount	$ 112
Predecessor
Debt Instrument [Line Items]
Non-recourse debt		$ 8,014
Unamortized debt issuance costs, net of premium, and issuance discount(2)		51
Debt premium		62
Predecessor \| Participating Interest Financing
Debt Instrument [Line Items]
Non-recourse debt		7,111
Predecessor \| Trust 2016-2
Debt Instrument [Line Items]
Non-recourse debt		94
Predecessor \| Trust 2016-3
Debt Instrument [Line Items]
Non-recourse debt		138
Predecessor \| Trust 2017-1
Debt Instrument [Line Items]
Non-recourse debt		213
Predecessor \| Trust 2017-2
Debt Instrument [Line Items]
Non-recourse debt		365
Predecessor \| Trust 2018-1
Debt Instrument [Line Items]
Non-recourse debt		0
Predecessor \| Trust 2018-2
Debt Instrument [Line Items]
Non-recourse debt		0
Predecessor \| Legacy Asset
Debt Instrument [Line Items]
Non-recourse debt		42
Predecessor \| Other
Debt Instrument [Line Items]
Non-recourse debt		$ 7,963