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Casualty, Environmental and Other Reserves (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Jul. 01, 2011
Dec. 31, 2010
Jul. 01, 2011
Casualty
Dec. 31, 2010
Casualty
Jun. 01, 2010
Casualty
May 31, 2010
Casualty
Jul. 01, 2011
Personal Injury
Dec. 31, 2010
Personal Injury
Jul. 01, 2011
Occupational
Dec. 31, 2010
Occupational
Jul. 01, 2011
Asbestos
Dec. 31, 2010
Asbestos
Jul. 01, 2011
Separation
Dec. 31, 2010
Separation
Jul. 01, 2011
Environmental
Dec. 31, 2010
Environmental
Jul. 01, 2011
Other
Dec. 31, 2010
Other
All Contingencies Reserves [Line Items]                                    
Casualty, environmental and other reserves, current $ 180 $ 176 $ 97 $ 97     $ 78 $ 78 $ 10 $ 10 $ 9 $ 9 $ 16 $ 16 $ 37 $ 37 $ 30 $ 26
Casualty, environmental and other reserves, noncurrent 468 502 271 278     178 176 32 30 61 72 38 44 56 70 103 110
Casualty, environmental and other reserves, total 648 678 368 375     256 254 42 40 70 81 54 60 93 107 133 136
Self-insured retention amount         $ 50 $ 25                        
Number of Claims Expected to Exceed Self Insured Retention Amount     0                              
Separation liabilities, payment range term - in years                         10 to 15          
Environmental impaired sites                             258