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Revenues (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 15, 2012
Jun. 15, 2012
Jun. 30, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues $ 3,263 $ 2,776 $ 5,328 $ 6,405
Total segment
       
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues 3,194 2,698 5,201 6,275
Other unallocated corporate
       
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues 69 78 127 130
North American Full-Service Segment | Total segment
       
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues 1,678 1,373 2,674 3,340
North American Limited-Service Segment | Total segment
       
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues 663 591 1,123 1,275
International Segment | Total segment
       
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues 406 306 577 746
Luxury Segment | Total segment
       
Segment Reporting, Revenue Reconciling Item [Line Items]        
Revenues $ 447 $ 428 $ 827 $ 914