Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 25, 2012	Mar. 27, 2011	Dec. 25, 2011
Income Taxes [Line Items]
Unrecognized tax benefits that, if recognized, would impact effective tax rate	$ 82		$ 78
Total amount of unrecognized tax benefits, excluding the federal tax benefit of state tax deductions	114		110
Increase in unrecognized tax benefits	4
Unrecognized tax benefits, increase for current year tax positions	3
Unrecognized tax benefits, increase for prior year tax positions	6
Unrecognized tax benefits, reductions for prior year tax positions	5
Recognized income (expense) from interest and the release of penalty reserves	2	1
Accrued interest and penalties payable related to unrecognized tax benefits	34		35
Estimated decrease in gross unrecognized tax positions within the next 12 months, maximum	$ 39
Federal
Income Taxes [Line Items]
Tax years subject to examination	The 2009 through 2011 tax years remain subject to examination by the IRS
State
Income Taxes [Line Items]
Tax years subject to examination	The 2005 through 2011 tax years generally remain subject to examination by state authorities
United Kingdom
Income Taxes [Line Items]
Tax years subject to examination	The years 2009-2011 are subject to examination in the UK