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	Mar. 31, 2020	Jun. 30, 2019
Estimate of Fair Value Measurement [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	$ 3,045.3	$ 2,946.2
Carrying Value [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	3,198.7	2,959.3
Four Point Seven Five Percent Senior Euro Denominated Notes [Member] | Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	0.0	454.2
Four Point Seven Five Percent Senior Euro Denominated Notes [Member] | Fair Value, Inputs, Level 2 [Member] | Carrying Value [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	0.0	428.3
U.S Dollar-denominated 5.00% Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	482.7	509.0
U.S Dollar-denominated 5.00% Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member] | Carrying Value [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	492.8	492.1
2.375% Senior Euro Denominated Notes [Member] | Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	789.2	0.0
2.375% Senior Euro Denominated Notes [Member] | Fair Value, Inputs, Level 2 [Member] | Carrying Value [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	894.1	0.0
U.S. dollar-denominated 4.875% Senior Notes due 2026 | Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	438.7	457.0
U.S. dollar-denominated 4.875% Senior Notes due 2026 | Fair Value, Inputs, Level 2 [Member] | Carrying Value [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	445.2	444.6
Senior Secured Credit Facilities & Other [Member] | Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	1,334.7	1,526.0
Senior Secured Credit Facilities & Other [Member] | Fair Value, Inputs, Level 2 [Member] | Carrying Value [Member]
Fair Value Measurements Of Financial Instruments [Line Items]
Debt Instrument, Fair Value Disclosure	$ 1,366.6	$ 1,594.3