Fair Value Measurements (Schedule of assets and liabilities measured at fair value on a recurring basis) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017
Measured at fair value on recurring basis | Machinery and equipment | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Corporate airplanes, held-for-sale	$ 0.0	$ 1.9
Measured at fair value on recurring basis | Other assets | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	0.0	0.2
Measured at fair value on recurring basis | Accrued expenses and other liabilities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	0.0	0.6
Deferred compensation plans	8.4	0.3
Measured at fair value on recurring basis | Accrued expenses and other liabilities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	24.6	4.0
Measured at fair value on recurring basis | Other noncurrent liabilities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plans	21.0	2.1
Measured at fair value on recurring basis | Other noncurrent liabilities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	0.8	$ 30.2
Trademarks | Measured at fair value on nonrecurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measured at fair value on a non-recurring basis	$ 33.0