Legal Proceedings and Contingencies (Details) - Exelis - Passaic River Alaska $ in Millions		9 Months Ended
	Mar. 31, 2016 party	Mar. 30, 2018 USD ($)
Loss Contingencies [Line Items]
Estimated cost for all participating parties of EPA's preferred alternative | $		$ 1,380
Number of potentially responsible parties notified (over 100) | party	100