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Supplemental Financial Information - Other Assets (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Other Assets [Abstract]
Derivative contracts	$ 333	$ 136
Intangible assets	403	413
Capital lease receivable	65	76
Non-current prepaid maintenance	57	5
Other	174	156
Other assets	$ 1,032	$ 786

X

- Definition

Net fair value of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected to be offset against an obligation to return collateral.

+ References

No definition available.

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- Definition

Amount of minimum lease payments to be received by the lessor for capital leases.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (b)
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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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-SubTopic 30
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- Definition

Amount of assets classified as other.

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- Definition

Amount of other miscellaneous assets.

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Carrying amount as of the balance sheet date of amounts paid in advance which will be charged against earnings in periods after one year or beyond the operating cycle, if longer.

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