Restructuring Charges (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 12.3		$ 17.7
Restructuring Charges	(1.3)	$ 14.8
2015 Margin Acceleration Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	(1.3)		27.8	$ 20.0
Two Thousand Fifteen Restructuring Plan [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	(1.3)
Employee Severance [Member] | Two Thousand Fifteen Restructuring Plan [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	6.1		10.5
Restructuring Charges	(1.0)
Facilities Related Charges [Member] | Two Thousand Fifteen Restructuring Plan [Member] [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	6.1		$ 7.1
Restructuring Charges	$ (0.3)