CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions		12 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Consolidated net income		$ 116.8	$ 113.2	$ 111.2
Other comprehensive (loss) income, net of tax
Currency translation		(9.8)	(47.6)	(36.4)
Pension and postretirement (net of tax of ($4.8), ($2.1), and ($6.5))		(13.1)	(8.4)	(13.0)
Net unrealized (loss) gain on derivative instruments (net of tax of $0.2, ($0.4), and ($0.1))		0.7	(0.1)	(1.5)
Total other comprehensive (loss) income, net of tax		(22.2)	(56.1)	(50.9)
Consolidated comprehensive income		94.6	57.1	60.3
Less: Comprehensive income attributable to noncontrolling interests		3.7	1.4	1.4
Comprehensive income	[1]	$ 90.9	$ 55.7	$ 58.9

[1] Comprehensive income attributable to Hillenbrand