v2.4.0.6
Recent Accounting Pronouncements - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 24, 2012
Jun. 12, 2010
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
One-time related tax charge   $ 41
Prescription drug benefit subsidy, income tax benefit $ 55