Revenue Recognition (Narrative) (Details) $ in Millions |
6 Months Ended | |
|---|---|---|
|
Jun. 30, 2018
USD ($)
performance_obligations
hotel
|
Dec. 31, 2017
USD ($)
|
|
| Revenue from Contract with Customer [Abstract] | ||
| Number of performance obligations | performance_obligations | 2 | |
| Standard management agreement term (up to) | 25 years | |
| Number of hotels from hotel ownership portfolio earning revenue | hotel | 2 | |
| Franchise agreement, revenue recognition period (within) | 12 years | |
| Co-branded credit card program, revenue recognition period (within) | 1 year | |
| Capitalized contract costs | $ | $ 27 | $ 26 |
| Period between performance obligation satisfaction and customer payment (or less) | 1 year |
| X | ||||||||||
- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Number of Performance Obligations No definition available.
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| X | ||||||||||
- Definition Revenue Earned, Number of Hotels No definition available.
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| X | ||||||||||
- Definition Revenue, Performance Obligation, Period Between Performance Obligation Satisfaction and Customer Payment No definition available.
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| X | ||||||||||
- Definition Revenue Recognition Period, Co-branded Credit Card Program No definition available.
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| X | ||||||||||
- Definition Revenue Recognition Period, Franchise Agreement No definition available.
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| X | ||||||||||
- Definition Standard Management Agreement, Term No definition available.
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