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Legal Proceedings and Contingencies (Details) - Exelis - Passaic river alaska
$ in Millions
1 Months Ended 3 Months Ended
Mar. 31, 2016
party
Apr. 03, 2020
USD ($)
Loss Contingencies [Line Items]    
Number of potentially responsible parties notified (over 100) | party 100  
Estimated cost for all participating parties of EPA's preferred alternative | $   $ 1,380