Service Alignment Initiative (Details) $ in Millions	3 Months Ended	6 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Restructuring Reserve [Roll Forward]
Balance at June 30, 2016		$ 0.0
Charged to expense	$ 1.2	41.1
Cash payments		(3.2)
Non-cash utilization		(1.6)
Balance at December 31, 2016	36.3	36.3
Employee separation benefits
Restructuring Reserve [Roll Forward]
Balance at June 30, 2016		0.0
Charged to expense	0.0	37.3
Cash payments		(1.5)
Non-cash utilization		0.0
Balance at December 31, 2016	35.8	35.8
Other initiative costs
Restructuring Reserve [Roll Forward]
Balance at June 30, 2016		0.0
Charged to expense	1.2	3.8
Cash payments		(1.7)
Non-cash utilization		(1.6)
Balance at December 31, 2016	0.5	0.5
Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	100.0	100.0
Minimum [Member] | Employee separation benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	75.0	75.0
Minimum [Member] | Other initiative costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	25.0	25.0
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	125.0	125.0
Maximum [Member] | Employee separation benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges	85.0	85.0
Maximum [Member] | Other initiative costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 40.0	$ 40.0