Restructuring Accruals (Schedule of Changes in the Restructuring Accrual) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Restructuring Reserve [Roll Forward]
Balance at beginning of year	$ 107.6	$ 8.7
Accrual on Time’s opening balance sheet	0.0	45.1
Accruals	87.4	106.3
Cash payments	(122.5)	(51.6)
Other accruals	0.0	(0.1)
Reversal of excess accrual	(6.0)	(0.8)
Balance at end of year	66.5	107.6	$ 8.7
Employee Terminations
Restructuring Reserve [Roll Forward]
Balance at beginning of year	101.3	8.7
Accrual on Time’s opening balance sheet	0.0	38.5
Accruals	56.3	104.9
Cash payments	(109.5)	(49.9)
Other accruals	0.0	(0.1)
Reversal of excess accrual	(4.4)	(0.8)	(1.8)
Balance at end of year	43.7	101.3	8.7
Other Exit Costs
Restructuring Reserve [Roll Forward]
Balance at beginning of year	6.3	0.0
Accrual on Time’s opening balance sheet	0.0	6.6
Accruals	31.1	1.4
Cash payments	(13.0)	(1.7)
Other accruals	0.0	0.0
Reversal of excess accrual	(1.6)	0.0
Balance at end of year	$ 22.8	$ 6.3	$ 0.0