Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Consolidated net income		$ 34.6	$ 31.3	$ 90.5	$ 79.5
Changes in other comprehensive income (loss), net of tax
Currency translation adjustment		25.1	(13.7)	11.7	(9.3)
Pension and postretirement (net of quarter-to-date tax of $0.4 and $0.4 and year-to-date tax of $5.4 and $1.6)		0.8	0.4	9.7	0.9
Change in net unrealized gain (loss) on derivative instruments (net of quarter-to-date tax of $0.3 and $0.5 and year-to-date tax of $1.1 and $0.6)		0.6	(1.6)	2.1	(0.6)
Total changes in other comprehensive income (loss), net of tax		26.5	(14.9)	23.5	(9.0)
Consolidated comprehensive income		61.1	16.4	114.0	70.5
Less: Comprehensive income attributable to noncontrolling interests		1.8	0.3	2.8	2.3
Comprehensive income (loss)	[1],[2]	$ 59.3	$ 16.1	$ 111.2	$ 68.2

[1] Comprehensive income attributable to Hillenbrand

[2] Comprehensive income attributable to Hillenbrand