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Subsequent Events - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Sep. 28, 2012
Dec. 31, 2011
Feb. 20, 2013
Subsequent Event [Member]
Feb. 20, 2013
Subsequent Event [Member]
Revolving credit facility [Member]
Feb. 20, 2013
Subsequent Event [Member]
Cash on hand [Member]
Subsequent Event [Line Items]            
Acquisition of Robbins & Myers, Inc $ 500     $ 2,500    
Amount paid for acquisition     1,038   1,400 1,100
Funds available under revolving credit facility $ 2,562 $ 3,500