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Discontinued Operations - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
CAS [Member]
Dec. 31, 2011
Exelis [Member]
Oct. 31, 2011
Exelis [Member]
Contract
Dec. 31, 2011
Xylem [Member]
Dec. 31, 2012
Shape Cutting Businesses [Member]
Dec. 31, 2011
Xylem and Exelis [Member]
Dec. 31, 2012
Xylem and Exelis [Member]
Proceeds from sale of segment     $ 236.6       $ 38.4    
Proceeds from contribution from subsidiaries   1,671.0   683.0   988.0      
Percentage share of contingent liabilities   21.00%   39.00%   40.00%      
Net Tax Related Liability Due to Exelis and Xylem in the Aggregate 0.8                
Distribution of Exelis and Xylem - Retained Earnings, TAX FILING ADJUSTMENT 7.0                
Minimum Period for Providing Transition Period 3 months                
Maximum period for providing transition period 24 months                
Percentage of Escalation Over Cost 10.00%                
Billings under transition service agreement, total               22.0  
Amount receivable associated with transactions related to transition services agreements                 1.3
Amount payable associated with transactions related to the transition services agreements                 $ 0.1
Number of Contracts         425