Recent Accounting Pronouncements Recent Accounting Pronouncements - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jul. 01, 2019	Jul. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales	$ (1,935.4)	$ (1,775.4)	$ (1,496.8)
Selling, general and administrative expense	(203.4)	(193.0)	(176.1)
Other income (expense), net	$ 0.6	(0.8)	(21.5)
Cumulative adjustment upon adoption of ASU 2017-12					$ 0.0
Reinvested Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment upon adoption of ASU 2017-12					1.0
Accounting Standards Update 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales		0.1	16.5
Selling, general and administrative expense		2.0	7.8
Accounting Standards Update 2017-12 | Reinvested Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment upon adoption of ASU 2017-12					$ 1.0
Reclassified from Cost of Goods Sold | Accounting Standards Update 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other income (expense), net		0.1	16.5
Reclassified from Selling General and Administrative Expenses | Accounting Standards Update 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Other income (expense), net		$ 2.0	$ 7.8
Minimum | Subsequent Event | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset				$ 51.0
Operating lease, liability				51.0
Maximum | Subsequent Event | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset				57.0
Operating lease, liability				$ 57.0