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v3.6.0.2

Change in Accounting Estimate (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 USD ($) | Dec. 31, 2016 USD ($)
Accounting Changes and Error Corrections [Abstract] |  |
Proceeds and Excess Tax Benefit from Share-based Compensation | $ 2 | $ 7
Rapid Rewards Frequent Flier Liability |  | $ 63
Estimated Impact |  | 20

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- Definition RapidRewardsFrequentFlierLiability2 + References No definition available. + Details
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- Definition The aggregate cash inflow comprised of the amount received from (a) employees to acquire the entity's shares under incentive awards, including stock option exercises and restricted stock arrangements, and (b) the excess tax benefit arising from such transactions. + References No definition available. + Details
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