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Financial Instruments, Excluding Derivative Financial Instruments (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Financial Instruments Excluding Derivative Financial Instruments Disclosure [Abstract]    
Fair value of the equity forward arrangement to mitigate the impact of changes in fair value of stock contributed to the asbestos settlement trust $ 214 $ 207
Long-term debt (excluding capital lease obligations), carrying values 3,344 3,346
Long-term debt (excluding capital lease obligations), fair values $ 3,726 $ 3,683