Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Net revenue	$ 607.5	$ 718.0	$ 1,939.0	$ 2,132.1
Net revenue	607.5	446.6	1,823.3	1,321.5
Cost of goods sold	400.2	298.2	1,250.5	865.2
Gross profit	207.3	148.4	572.8	456.3
Operating expenses	118.5	90.8	411.9	275.2
Amortization expense	16.4	8.6	55.2	25.0
Goodwill and Intangible Asset Impairment	0.0	0.0	82.5	0.0
Interest expense	19.7	5.2	55.3	16.1
Other income (expense), net	0.6	(0.5)	1.8	0.1
Income (loss) before income taxes	53.3	43.3	(30.3)	140.1
Income tax expense	28.3	11.6	17.7	39.9
Consolidated net income (loss)	25.0	31.7	(48.0)	100.2
Less: Net income attributable to noncontrolling interests	1.0	1.3	5.1	3.5
Net income (loss)	$ 24.0	$ 30.4	$ (53.1)	$ 96.7
Net income (loss) attributable to Hillenbrand  — per share of common stock:
Basic earnings (loss) per share	$ 0.32	$ 0.48	$ (0.73)	$ 1.54
Diluted earnings (loss) per share	$ 0.32	$ 0.48	$ (0.73)	$ 1.52
Weighted average shares outstanding (basic)	75.1	63.0	72.8	62.9
Weighted average shares outstanding (diluted)	75.1	63.4	72.8	63.4