Revenues (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 30, 2011	Dec. 31, 2010	Jan. 01, 2010
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 12,317	$ 11,691	$ 10,908
Total Reportable Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	12,197	11,611	10,831
North American Full-Service Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	5,450	5,159	4,892
North American Limited-Service Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	2,358	2,150	1,986
International Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,278	1,188	1,096
Luxury Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,673	1,563	1,413
Former Timeshare Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,438	1,551	1,444
Other Unallocated Corporate
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 120	$ 80	$ 77