Equity Method Investments (Detail) (USD $) In Millions, unless otherwise specified	Dec. 30, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Equity method investments	$ 234	$ 190
Total Reportable Segments
Segment Reporting Information [Line Items]
Equity method investments	227	184
North American Full-Service Segment
Segment Reporting Information [Line Items]
Equity method investments	13	14
North American Limited-Service Segment
Segment Reporting Information [Line Items]
Equity method investments	84	87
International Segment
Segment Reporting Information [Line Items]
Equity method investments	92	38
Luxury Segment
Segment Reporting Information [Line Items]
Equity method investments	38	44
Former Timeshare Segment
Segment Reporting Information [Line Items]
Equity method investments	0	1
Other Unallocated Corporate
Segment Reporting Information [Line Items]
Equity method investments	$ 7	$ 6