Timeshare Strategy-Composition of Impairment Charges (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended										3 Months Ended	12 Months Ended
	Dec. 30, 2011		Dec. 31, 2010		Jan. 01, 2010		Dec. 30, 2011 Former Timeshare Segment	Jan. 01, 2010 Former Timeshare Segment	Dec. 30, 2011 Former Timeshare Segment Inventory	Jan. 01, 2010 Former Timeshare Segment Inventory	Sep. 09, 2011 Former Timeshare Segment Property and Equipment	Jan. 01, 2010 Former Timeshare Segment Property and Equipment	Dec. 30, 2011 Former Timeshare Segment Time Share Purchase Commitments	Jan. 01, 2010 Former Timeshare Segment Time Share Purchase Commitments	Dec. 30, 2011 Former Timeshare Segment Equity Method Investee	Jan. 01, 2010 Former Timeshare Segment Equity Method Investee	Dec. 30, 2011 Former Timeshare Segment Loans	Jan. 01, 2010 Former Timeshare Segment Loans	Dec. 30, 2011 Former Timeshare Segment Funding Liability	Jan. 01, 2010 Former Timeshare Segment Funding Liability
Timeshare Strategy Disclosure [Line Items]
Timeshare strategy-impairment charges, operating	$ 324		$ 0		$ 614		$ 324	$ 614	$ 256	$ 529	$ 68	$ 64	$ 0	$ 21
Timeshare strategy impairment charges, non-operating	0	[1]	0	[1]	138	[1]	0	138							0	71	0	40	0	27
Total	324		0		752			752
Total (after-tax)							$ 234	$ 502

[1] See Footnote No. 22, "Related Party Transactions," of the Notes to Consolidated Financial Statements for disclosure of related party amounts.