Activity Related to "Loans to timeshare owners" Notes Receivable Reserve (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 30, 2011		Dec. 31, 2010		Jan. 01, 2010
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Ending balance	$ 78		$ 292
Loans to timeshare owners
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	218		27		35
Additions for current year securitizations and contract sales	26		32		5
Additions for new securitizations, net of clean-up call			0
Write-offs	(67)		(79)		(13)
One-time impact of the new Transfers of Financial Assets and Consolidation standards			219	[1]
Defaulted note repurchase activity	0	[2]	0
Other	0	[3]	19
Transfer due to spin-off	(177)
Ending balance	0		218		27
Nonsecuritized Notes Receivable
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Ending balance	78		203
Nonsecuritized Notes Receivable | Loans to timeshare owners
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	129		27		35
Additions for current year securitizations and contract sales	26		32		5
Additions for new securitizations, net of clean-up call			(18)
Write-offs	(67)		(79)		(13)
One-time impact of the new Transfers of Financial Assets and Consolidation standards			84	[1]
Defaulted note repurchase activity	43	[2]	68
Other	(12)	[3]	15
Transfer due to spin-off	(107)
Ending balance	0		129		27
Securitized Notes Receivable
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Ending balance	0		89
Securitized Notes Receivable | Loans to timeshare owners
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	89		0		0
Additions for current year securitizations and contract sales	0		0		0
Additions for new securitizations, net of clean-up call			18
Write-offs	0		0		0
One-time impact of the new Transfers of Financial Assets and Consolidation standards			135	[1]
Defaulted note repurchase activity	(43)	[2]	(68)
Other	12	[3]	4
Transfer due to spin-off	(70)
Ending balance	$ 0		$ 89		$ 0

[1] The non-securitized notes receivable reserve related to the implementation of the new Transfers of Financial Assets and Consolidation standards, which required us to establish reserves for certain previously securitized and subsequently repurchased notes held at January 2, 2010.

[2] Decrease in securitized reserve and increase in non-securitized reserve was attributable to the transfer of the reserve when we repurchased the notes.

[3] Consisted of static pool and default rate assumption changes.