Percentage of face value at which senior notes are sold.

No definition available.

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- Definition

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

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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

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

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- Definition

The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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- Definition

The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

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Debt - Senior Notes (Details) - USD ($) $ in Millions	1 Months Ended			12 Months Ended
Debt - Senior Notes (Details) - USD ($) $ in Millions	Dec. 31, 2017	Jan. 31, 2017	Aug. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Repayments of senior notes					$ 1,350	$ 175
Senior notes \| 4.50% senior notes due December 2026
Debt Instrument [Line Items]
Offering price percentage						99.716%
Debt instrument, interest rate (as a percent)				4.50%		4.50%
Senior notes \| 6.13% senior notes due January 2017
Debt Instrument [Line Items]
Repayments of senior notes		$ 400
Debt instrument, interest rate (as a percent)		6.13%
Senior notes \| 6.50% senior notes due May 2018
Debt Instrument [Line Items]
Repayments of senior notes	$ 600
Debt instrument, interest rate (as a percent)	6.50%				6.50%
Senior notes \| 8.75% senior notes due May 2019
Debt Instrument [Line Items]
Repayments of senior notes	$ 350
Debt instrument, interest rate (as a percent)	8.75%				8.75%
Senior notes \| 5.88% senior notes due August 2016
Debt Instrument [Line Items]
Repayments of senior notes			$ 175
Debt instrument, interest rate (as a percent)			5.88%
Consolidated finance subsidiary co-issuer \| Senior notes
Debt Instrument [Line Items]
Consolidated subsidiary, ownership interest held by the parent (as a percent)				100.00%
Other income/(expense), net \| Senior notes
Debt Instrument [Line Items]
Loss on early redemption of senior notes					$ 40