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Commitments and Contingencies (Details Textual) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2012
Dec. 31, 2009
Dec. 31, 2011
Mar. 31, 2012
Xylem [Member]
Mar. 31, 2012
Exelis [Member]
Mar. 31, 2012
Asbestos Issue [Member]
Claim
Dec. 31, 2011
Asbestos Issue [Member]
Claim
Mar. 31, 2011
Asbestos Issue [Member]
Claim
Dec. 31, 2010
Asbestos Issue [Member]
Claim
Mar. 31, 2012
Mississippi Dockets [Member]
Claim
Commitments and Contingencies (Textual) [Abstract]                    
Number of claims in Mississippi placed on inactive dockets           95,682 105,486 103,678 103,575 29,429
Number of dismissed claims           95,682       10,000
Percentage of cost shared by bondholders 21.00%     40.00% 39.00%          
Commitments and Contingencies (Additional Textual) [Abstract]                    
Tenure to be used to file undiscounted Asbestos liability including legal fees and claims Next 10 years                  
Estimated asbestos exposure, net of expected recoveries from insurers and other responsible parties $ 711   $ 714              
Face value of bond issued   $ 500                
Interest rate on senior notes   6.125%                
Amount of damages allege in excess by Plaintiffs excess of 5 million                  
Amount of damages allege in excess by all holders of bonds excess of 15 million