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Business Segments - Schedule of Revenue from External Customers by Geographic Area (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Revenue from External Customer [Line Items]                      
Total revenues $ 2,828us-gaap_Revenues $ 2,644us-gaap_Revenues $ 2,667us-gaap_Revenues $ 2,363us-gaap_Revenues $ 2,643us-gaap_Revenues $ 2,449us-gaap_Revenues $ 2,380us-gaap_Revenues $ 2,263us-gaap_Revenues $ 10,502us-gaap_Revenues $ 9,735us-gaap_Revenues $ 9,276us-gaap_Revenues
United States [member]                      
Revenue from External Customer [Line Items]                      
Total revenues                 7,927us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_US
7,262us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_US
6,743us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_US
Rest of World [member]                      
Revenue from External Customer [Line Items]                      
Total revenues                 $ 2,575us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= hlt_TotalofAllOtherCountriesMember
$ 2,473us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= hlt_TotalofAllOtherCountriesMember
$ 2,533us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= hlt_TotalofAllOtherCountriesMember