Derivatives and Hedging Activities - Summary of Effect of Derivative Instruments on Income (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Net sales	$ 572.4	$ 479.8
Cost of sales	480.7	394.1
Interest expense	6.3	7.2
Net sales
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss)	0.2	(0.4)
Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss)	(2.0)	(2.6)
Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss)	0.1	0.1
Interest Rate Swaps | Net sales
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Item	0.0	0.0
Derivatives designated as hedging instruments	0.0	0.0
Interest Rate Swaps | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Item	0.0	0.0
Derivatives designated as hedging instruments	0.0	0.0
Interest Rate Swaps | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Hedged Item	0.3	(0.2)
Derivatives designated as hedging instruments	(0.3)	0.2
Amount Reclassified from AOCI | Accumulated Gain (Loss), Net Cash Flow Hedge, Parent | Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net sales	0.0	0.0
Cost of sales	(2.0)	(2.6)
Interest expense	0.0	0.0
Amount Reclassified from AOCI | Accumulated Gain (Loss), Net Cash Flow Hedge, Parent | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Net sales	0.2	(0.4)
Cost of sales	0.0	0.0
Interest expense	0.0	0.0
Amount Reclassified from AOCI | Accumulated Gain (Loss), Net Cash Flow Hedge, Parent | Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Net sales	0.0	0.0
Cost of sales	0.0	0.0
Interest expense	$ 0.1	$ 0.1