Employee Benefit Plans - Defined Contribution Savings Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Saving Plan costs recorded	$ 28.5	$ 25.3	$ 22.1
United States Postretirement Benefit Plan of US Entity [Member] | 401(k) Savings Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Saving Plan costs recorded	27.3	24.9	22.1
United States Postretirement Benefit Plan of US Entity [Member] | Executive Retirement And Savings Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Saving Plan costs recorded	$ 1.2	$ 0.4	$ 0.0