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Employee Benefit Plans (Contributions Made to Our Pension Plans Summary) (Details) (USD $)
In Millions
9 Months Ended12 Months Ended
Sep. 30, 2011
Oct. 01, 2010
Dec. 31, 2010
Compensation and Retirement Disclosure [Abstract]   
Total pension contributions, Projected$ 58[1]  
Total pension contributions, Actual$ 41$ 63$ 116[1]
[1](A) These amounts represent only company-paid contributions.