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Commitments and Contingencies - Additional Information (Detail) (USD $)
 3 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Sep. 30, 2012
Asbestos Related Matters [Member]
Jun. 30, 2012
Asbestos Related Matters [Member]
Sep. 30, 2011
Asbestos Related Matters [Member]
Sep. 30, 2010
Asbestos Related Matters [Member]
Dec. 31, 2012
Asbestos Related Matters [Member]
Claim
Dec. 31, 2011
Asbestos Related Matters [Member]
Claim
Dec. 31, 2010
Asbestos Related Matters [Member]
Claim
Dec. 31, 2009
Asbestos Related Matters [Member]
Claim
Dec. 31, 2012
Asbestos Related Matters [Member]
Minimum [Member]
Dec. 31, 2012
Asbestos Related Matters [Member]
Maximum [Member]
Dec. 31, 2012
Asbestos Related Matters [Member]
New York [Member]
Claim
Dec. 31, 2012
Asbestos Related Matters [Member]
Florida [Member]
Claim
Dec. 31, 2012
Asbestos Related Matters [Member]
Louisiana [Member]
Claim
Dec. 31, 2012
Asbestos Related Matters [Member]
Texas [Member]
Claim
Dec. 31, 2009
Other Legal Matters [Member]
Dec. 31, 2012
Active [Member]
Asbestos Related Matters [Member]
Asbestos Issue [Member]
Claim
Number of open claims pending against ITT         96,000 105,000 104,000 105,000     31,000 6,000 5,000 5,000   67,000
Average cost per resolved claim         $ 7,000 $ 19,000                    
Asbestos liability and related asset measurement period         Next 10 years                      
Recorded asbestos liability related to pending claims         36.00%                      
Estimated Receivables due from domestic insurers         89.00%                      
Aggregate settlement coverage agreement for asbestos related assets         58.00%                      
Adjustment in estimated undiscounted asbestos liability         (75,800,000) (44,100,000) 691,300,000                  
Decrease in estimated undiscounted asbestos related assets 78,700,000   75,800,000                          
Increase in asbestos-related assets       371,500,000                        
Number of forecast periods to be maintained by each quarter         10 years                      
Distribution from insolvent insurers   8,300,000                            
Reduction to the net asbestos charge   5,800,000                            
Reduce in asbestos related asset   2,500,000                            
Estimated asbestos exposure, net of expected recoveries from insurers and other responsible parties         739,500,000 713,700,000                    
Liability related to a business disposed         245,200,000 233,600,000                    
Asset related to a business disposed         233,800,000 232,800,000                    
Proceeds from Disposed Business         10,000,000                      
Benefit from Settlement Agreement, Continuing Operations         5,800,000                      
Benefit from Settlement Agreement, Discontinued Operations         5,600,000                      
Estimated Percentage of Recovered asbestos Costs         45.00%                      
Percentage of Insurance Coverage Recoveries         24.00%                      
Average annual net cash outflow projected over the next five years                 10,000,000 20,000,000            
Average annual net cash outflow projected in past three years         9,000,000                      
Average annual net cash outflow projected over the remainder of the projection period                 35,000,000 45,000,000            
Total asset related to insurance policy         12,300,000                      
Insurance policy asset from continuing operations         10,800,000                      
Insurance policy asset from discontinued operations         1,500,000                      
Face value of bond issued                             $ 500,000,000  
Interest rate on senior notes                             6.125%