Long-Term Obligations and Other Short-Term Borrowings Fair Value Measurements of Financial Instruments - Carrying Amounts and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2016	Jun. 30, 2016
Carrying Value [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt and Capital Lease Obligations	$ 2,024.4	$ 1,860.5
Estimate of Fair Value Measurement [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	$ 2,049.8	$ 1,868.8