Service Alignment Initiative (Details) - USD ($) $ in Millions		12 Months Ended			35 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2019
Restructuring Reserve [Roll Forward]
Restructuring Charges, Net of Reversals		$ 23.9	$ (20.5)	$ (90.0)
Cumulative amount from inception	[1]				$ 86.6
Beginning balance		54.5	74.4
Charged to expense		6.8	43.9
Reversals		(26.6)	(23.4)
Cash payments		(22.7)	(39.7)
Non-cash utilization			(0.7)
Ending balance		12.0	54.5	74.4	12.0
Employee separation benefits [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges, Net of Reversals		22.5	(15.4)	(84.1)
Cumulative amount from inception					77.0
Beginning balance		54.0	73.9
Charged to expense		4.1	38.8
Reversals		(26.6)	(23.4)
Cash payments		(19.9)	(35.3)
Non-cash utilization			0.0
Ending balance		11.6	54.0	73.9	11.6
Other initiative costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges, Net of Reversals		(2.7)	(5.1)	(5.9)
Cumulative amount from inception					13.7
Beginning balance		0.5	0.5
Charged to expense		2.7	5.1
Reversals		0.0	0.0
Cash payments		(2.8)	(4.4)
Non-cash utilization			(0.7)
Ending balance		0.4	0.5	0.5	0.4
Gain on Sale of Building [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges, Net of Reversals		$ (4.1)	$ 0.0	$ 0.0
Cumulative amount from inception					$ 4.1

[1] (d) - All charges are included within the Other segment