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Goodwill - Schedule of Goodwill (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Goodwill [Line Items]      
Goodwill, gross $ 9,681us-gaap_GoodwillGross $ 9,747us-gaap_GoodwillGross $ 9,724us-gaap_GoodwillGross
Accumulated impairment losses (3,527)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss (3,527)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss (3,527)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Goodwill 6,154us-gaap_Goodwill 6,220us-gaap_Goodwill 6,197us-gaap_Goodwill
Foreign currency translation (66)us-gaap_GoodwillTranslationAdjustments 23us-gaap_GoodwillTranslationAdjustments  
Management and franchise [member]      
Goodwill [Line Items]      
Goodwill, gross 5,129us-gaap_GoodwillGross
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_ManagementandFranchiseMember
5,184us-gaap_GoodwillGross
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_ManagementandFranchiseMember
5,165us-gaap_GoodwillGross
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_ManagementandFranchiseMember
Accumulated impairment losses 0us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_ManagementandFranchiseMember
0us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_ManagementandFranchiseMember
0us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_ManagementandFranchiseMember
Goodwill 5,129us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_ManagementandFranchiseMember
5,184us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_ManagementandFranchiseMember
5,165us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_ManagementandFranchiseMember
Foreign currency translation (55)us-gaap_GoodwillTranslationAdjustments
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_ManagementandFranchiseMember
19us-gaap_GoodwillTranslationAdjustments
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_ManagementandFranchiseMember
 
Ownership [member]      
Goodwill [Line Items]      
Goodwill, gross 4,552us-gaap_GoodwillGross
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_OwnershipMember
4,563us-gaap_GoodwillGross
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_OwnershipMember
4,559us-gaap_GoodwillGross
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_OwnershipMember
Accumulated impairment losses (3,527)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_OwnershipMember
(3,527)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_OwnershipMember
(3,527)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_OwnershipMember
Goodwill 1,025us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_OwnershipMember
1,036us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_OwnershipMember
1,032us-gaap_Goodwill
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_OwnershipMember
Foreign currency translation $ (11)us-gaap_GoodwillTranslationAdjustments
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_OwnershipMember
$ 4us-gaap_GoodwillTranslationAdjustments
/ us-gaap_StatementBusinessSegmentsAxis
= hlt_OwnershipMember