Service Alignment Initiative (Details) - USD ($) $ in Millions	3 Months Ended		15 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017
Restructuring Reserve [Roll Forward]
Balance at June 30, 2017	$ 74.4
Charged to expense	2.7
Restructuring Reserve, Accrual Adjustment	(6.0)
Restructuring Charges, Net of Reversals	(3.3)	$ 39.9
Restructuring and Related Cost, Incurred Cost			$ 86.7
Cash payments	(10.6)
Non-cash utilization	(0.6)
Balance at September 30, 2017	59.9		59.9
Employee separation benefits
Restructuring Reserve [Roll Forward]
Balance at June 30, 2017	73.9
Charged to expense	0.8
Restructuring Reserve, Accrual Adjustment	(6.0)
Restructuring Charges, Net of Reversals	(5.2)	37.3
Restructuring and Related Cost, Incurred Cost			78.9
Cash payments	(9.4)
Non-cash utilization	0.0
Balance at September 30, 2017	59.3		59.3
Other initiative costs
Restructuring Reserve [Roll Forward]
Balance at June 30, 2017	0.5
Charged to expense	1.9	$ 2.6
Restructuring Reserve, Accrual Adjustment	0.0
Restructuring and Related Cost, Incurred Cost			7.8
Cash payments	(1.2)
Non-cash utilization	(0.6)
Balance at September 30, 2017	0.6		0.6
Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 30.0		$ 30.0