Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies Change in Accounting Principle (Details)

v2.4.0.6
Summary of Significant Accounting Policies Change in Accounting Principle (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 30, 2012
Apr. 01, 2011
Dec. 31, 2010
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Cumulative effect adjustment on retained earnings from change in accounting methodology as of January 1, 2011     $ 59
Impact on income before income taxes from a change in accounting methodology $ 1 $ 5