Net Present Value Aircraft Operating Leases

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- Definition

Expenses incurred related to the lease of aircraft from outside third parties that are used in the entity's business operations.

+ References

No definition available.

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- Definition

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

+ References

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- Definition

Disclosure related to a new accounting pronouncement or a change in accounting principle, including the nature and reason for the change and the effect of the change on prior periods and the current period.

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- Definition

Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

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No definition available.

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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.

+ References

No definition available.

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- Definition

The number of units (items of property) under operating lease arrangements.

+ References

No definition available.

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New Accounting Pronouncements (Details) $ in Millions	3 Months Ended		12 Months Ended
New Accounting Pronouncements (Details) $ in Millions	Mar. 31, 2018 USD ($) aircraft	Mar. 31, 2017 USD ($)	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	23.30%		36.90%
Aircraft rentals	$ 40	$ 54
Aircraft under operating lease \| aircraft	53
Net Present Value Aircraft Operating Leases	$ 900
ASU 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	3
AOCI Including Portion Attributable to Noncontrolling Interest
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 20
B-717-200
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Aircraft under operating lease \| aircraft	76
Reclassification out of Accumulated Other Comprehensive Income
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of Stranded amounts in AOCI to Retained Earnings (ASU 2018-02)	2