Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income per common share
Net income	[1],[2]	$ 32.1	$ 32.8	$ 92.3	$ 86.1
Weighted average shares outstanding (basic - in millions)		63,300,000	63,100,000	63,200,000	63,200,000
Effect of dilutive stock options and other unvested equity awards (in millions)		600,000	600,000	600,000	600,000
Weighted average shares outstanding (diluted - in millions)		63,900,000	63,700,000	63,800,000	63,800,000
Basic earnings per share	[1]	$ 0.51	$ 0.52	$ 1.46	$ 1.36
Diluted earnings per share		$ 0.50	$ 0.51	$ 1.44	$ 1.35
Shares with anti-dilutive effect excluded from the computation of diluted earnings per share (in millions)		700,000	400,000	700,000	400,000
Performance-based stock awards
Income per common share
Shares with anti-dilutive effect excluded from the computation of diluted earnings per share (in millions)				1,400,000	1,800,000

[1] Net income attributable to Hillenbrand

[2] Net income attributable to Hillenbrand