Commitments and Contingencies (Details) $ in Millions		3 Months Ended
	Feb. 03, 2014 defendant	Sep. 30, 2015 BRL	Sep. 30, 2015 USD ($)	Mar. 31, 2014 BRL	Mar. 31, 2014 USD ($)
Loss Contingencies [Line Items]
Non-cancelable purchase commitments			$ 72.5
Foreign
Loss Contingencies [Line Items]
Value of tax credits disallowed				BRL 3,433,914	$ 0.9
Estimated interest in penalties			4.1
Potential total tax liability			4.3
Minimum | Foreign
Loss Contingencies [Line Items]
Potential total tax liability			0.0
Maximum | Foreign
Loss Contingencies [Line Items]
Potential total tax liability			6.0
The State of Sao Paolo v. Enterasys Networks do Brazil Ltda | Foreign
Loss Contingencies [Line Items]
Estimated court fees		BRL 3,952,598	$ 1.0
Pending Litigation | Commonwealth of Kentucky
Loss Contingencies [Line Items]
Number of co-defendants | defendant	2