Other Income and Expense (Details) - USD ($) $ in Millions		3 Months Ended				9 Months Ended
		Mar. 31, 2020		Mar. 31, 2019		Mar. 31, 2020	Mar. 31, 2019
Other Income and Expenses [Abstract]
Debt refinancing costs		16.0	[1]	—		16.1	4.2	[1]
Foreign Currency (gains) and losses	[2]	$ (5.3)		$ (3.2)		$ (1.7)	$ (0.8)
Other		26.0	[3]	0.0	[3]	22.8	0.5
Other (income)/expense, net		36.7		$ (3.2)		37.2	3.9
Write off of Deferred Debt Issuance Cost		6.0					4.2
Early Repayment of Senior Debt							10.0
Derivative, Gain (Loss) on Derivative, Net		$ (26.3)				$ (24.9)	$ 0.0

[1] The expense in the nine months ended March 31, 2019 includes a write-off of $4.2 million of previously capitalized financing charges related to the Company's U.S. dollar-denominated term loan under its senior secured credit facility. The expense in the three months ended March 31, 2020 includes (a) a write-off of $6.0 million of previously capitalized financing charges related to the Company's recently repaid euro-denominated term loan under its senior secured credit facilities and the Company's recently redeemed euro-denominated senior notes and (b) a $10.0 million premium on early redemption of the euro notes.

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

[3] Included within Other for the three and nine months ended March 31, 2020 are unrealized losses of $26.3 million and $24.9 million, respectively, related to the fair value of the derivative liability associated with the Series A Preferred Stock