Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions		12 Months Ended
	Jan. 15, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Carrying value of the notes		$ 4,085.3	$ 3,668.7
Hypothetical annual interest expense		$ 18.4
Interest Rate Swap [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Hypothetical interest rate increase		100.00%
Change in fair value of interest rate swap		$ (1.1)	2.1	$ 4.6
Hypothetical increase to interest rate swap fair value		3.0
Term Loan Facility due 2021 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Carrying value of the notes		$ 1,818.4	1,627.0
Hypothetical interest rate increase		1.00%
Term Loan Facility due 2021 [Member] | LIBOR
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Floor rate		1.00%
Revolver interest rate	3.50%	2.75%
Alternative Revolver interest rate		3.50
Notes [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Carrying value of the notes		$ 2,320.7	2,112.7
Fair value of the notes		$ 2,338.1	$ 2,109.3