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Commitments and Contingencies - Contractual Obligations Outstanding (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
Total unconditional purchase obligations $ 83us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount
Unconditional purchase obligations, Due in Less Than 1 Year 35us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary
Unconditional purchase obligations, Due in 1-3 Years 30hot_UnrecordedUnconditionalPurchaseObligationBalanceDueBetweenOneToThreeYears
Unconditional purchase obligations, Due in 3-5 Years 18hot_UnrecordedUnconditionalPurchaseObligationBalanceDueBetweenThreeToFiveYears
Unconditional purchase obligations, Due After 5 Years 0us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears
Total other long-term obligations 19hot_OtherLongTermObligations
Other long-term obligations, Due in Less Than 1 Year 1hot_OtherObligationsDueWithinOneYear
Other long-term obligations, Due in 1-3 Years 4hot_OtherLongTermObligationsDueBetweenOneToThreeYears
Other long-term obligations, Due in 3-5 Years 4hot_OtherLongTermObligationsDueBetweenThreeToFiveYears
Other long-term obligations, Due After 5 Years 10hot_OtherLongTermObligationsDueAfterFiveYears
Total contractual obligations 102hot_ContractualLongTermObligations
Total contractual obligations, Due in Less Than 1 Year 36hot_ContractualLongTermObligationsDueWithinOneYear
Total contractual obligations, Due in 1-3 Years 34hot_ContractualLongTermObligationsDueBetweenOneToThreeYears
Total contractual obligations, Due in 3-5 Years 22hot_ContractualLongTermObligationsDueBetweenThreeToFiveYears
Total contractual obligations, Due After 5 Years $ 10hot_ContractualLongTermObligationsDueAfterFiveYears