Other Income and Expense (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Dec. 31, 2018	Dec. 31, 2017		Dec. 31, 2018		Dec. 31, 2017
Other Income and Expenses [Abstract]
Debt refinancing costs		$—	$11.8	[1]	$4.2	[1]	$11.8	[1]
Foreign Currency (gains) and losses	[2]	$ 0.7	$ 1.3		$ 2.4		$ 6.9
Other		0.7	0.0		0.5		(0.4)
Other expense, net	[3]	$ 1.4	$ 13.1		$ 7.1		$ 18.3

[1] The expense in the six months ended December 31, 2018 includes a write-off of $4.2 million of previously capitalized financing charges related to the Company's U.S. dollar term loan under its senior secured credit facility. The prior-year debt refinancing costs include financing charges related to the offering of the USD Notes and the Third Amendment and also include a $6.1 million charge for commitment fees paid during the first quarter of fiscal 2018 on the Bridge Facility.

[2] Foreign currency remeasurement (gains) and losses include both cash and non-cash transactions.

[3] Refer to Note 8, Other Expense for details of financing changes and foreign currency translation adjustments recorded within Other (expense), net.