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Acquisitions (Detail)
In Millions, unless otherwise specified
9 Months Ended 12 Months Ended 1 Months Ended 1 Months Ended 11 Months Ended 1 Months Ended 9 Months Ended 9 Months Ended
Sep. 30, 2014
USD ($)
Sep. 30, 2013
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2012
Hilton Odawara [member]
USD ($)
Oct. 31, 2013
Hilton Bradford [Member]
USD ($)
Oct. 31, 2013
Hilton Bradford [Member]
GBP (£)
Sep. 30, 2013
Hilton Bradford [Member]
USD ($)
Apr. 30, 2013
Land Parcel [member]
USD ($)
Dec. 31, 2012
Hilton Odawara [member]
USD ($)
Dec. 31, 2012
Hilton Odawara [member]
JPY (¥)
Nov. 30, 2012
Hilton Odawara [member]
Aug. 31, 2011
Oakbrook Suites and Garden Inn [member]
USD ($)
Jul. 31, 2011
Oakbrook Suites and Garden Inn [member]
Sep. 30, 2014
Equity Investments Exchange [Member]
USD ($)
Hotel
Jul. 25, 2014
Equity Investments Exchange [Member]
USD ($)
Sep. 30, 2013
Land Parcel [member]
USD ($)
Business Acquisition [Line Items]                                    
Acquisitions   $ 30 $ 30   $ 12   $ 15 £ 9   $ 28 $ 1 ¥ 155   $ 12       $ 28
Gain (loss) on capital lease transactions             2                      
Capital lease obligations           15     17                  
Percentage interest acquired                     53.50% 53.50%   50.00%        
VIE, ownership percentage                         46.50%          
Acquisition of noncontrolling interest 0     1             4              
Equity method investment, ownership percentage                             50.00%      
Property and equipment recognized from acquisition                           24        
Number of hotels in JV portfolio                               11    
Number of hotels to be removed from JV portfolio                               6    
Number of hotels to be retained and wholly owned                               5    
Post-exchange ownership %                               100.00% 100.00%  
Equity investments 157   245 276                         59  
Fair value of equity investments before exchange                               83    
Remeasurement gain of equity investments before exchange                               24    
Transaction-related costs                               $ 1