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

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Paragraph 1
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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

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

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Balance Type:	debit
Period Type:	instant

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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Debt and Capital Leases - Senior Notes (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	May 28, 2019	May 14, 2019
Debt Instrument [Line Items]
Loss on debt extinguishment	$ 47,000,000	$ 1,000,000	$ 47,000,000	$ 3,000,000
Recourse Debt
Debt Instrument [Line Items]
Debt issuance amount					$ 1,100,000,000
Recourse Debt \| Senior Notes, due 2029
Debt Instrument [Line Items]
Debt issuance amount						$ 733,000,000
Interest rate, stated percentage	5.25%		5.25%			5.25%
Recourse Debt \| Senior Notes, due 2024
Debt Instrument [Line Items]
Interest rate, stated percentage	6.25%		6.25%
Senior Notes redeemed, amount	$ 733,000,000		$ 733,000,000
Loss on debt extinguishment	29,000,000
Write off of previously deferred debt issuance costs	$ 5,000,000
Recourse Debt \| Senior Secured First Lien Notes, due 2024
Debt Instrument [Line Items]
Debt issuance amount					$ 600,000,000
Interest rate, stated percentage	3.75%		3.75%		3.75%
Recourse Debt \| Senior Secured First Lien Notes, due 2029
Debt Instrument [Line Items]
Debt issuance amount					$ 500,000,000
Interest rate, stated percentage	4.45%		4.45%		4.45%