Percentage of liability position derivative instruments covered by a collateral holiday agreement.

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- Definition

Number of years liability position derivative instruments are covered by a collateral holiday agreement.

+ References

No definition available.

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- Definition

Gain (Loss) On Financial Instruments, Net [Abstract]

+ References

No definition available.

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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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.

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No definition available.

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- Definition

Fair value as of the balance sheet date of all foreign currency derivative liabilities not designated as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959

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- Definition

Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109240200&loc=d3e30690-110894

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-Topic 830
-SubTopic 20
-Section 45
-Paragraph 2
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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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- Definition

Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
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Amount of gain (loss) included in earnings for the period from the increase (decrease) in fair value of interest rate derivatives not designated as hedging instruments.

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Accounting for Derivative Instruments and Hedging Activities (Details) £ in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 GBP (£)	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Loss on financial instruments, net:
Change in fair value of cross-currency derivative instruments	$ (181)	$ (7)	$ (53)	$ 58
Foreign currency remeasurement of Sterling Notes to U.S. dollars	106	(63)	41	(91)
Other, net	0	0	0	1
Loss on financial instruments, net	$ (75)	$ (70)	$ (12)	$ (32)
Cross Currency Derivatives [Member]
Derivatives:
Notional amount \| £					£ 1,275
Collateral holiday agreement, percentage of position covered					80.00%	80.00%
Collateral holiday agreement, term			3 years
Other Noncurrent Liabilities [Member] \| Cross Currency Derivatives [Member]
Derivatives:
Liability position cross-currency derivative instruments						$ 78	$ 25