Consolidated Statement of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Sales
Total sales	$ 6,329.8	$ 6,694.8	$ 6,666.0
Cost of sales
Cost of sales	(3,734.6)	(3,794.7)	(3,781.1)
Gross profit	2,595.2	2,900.1	2,884.9
Selling, general and administrative expenses	(1,479.8)	(1,538.5)	(1,587.9)
Change in fair value of investments	153.9	(368.5)	90.0
Other (expense) income (Note 15)	(29.7)	6.1	16.8
Interest expense	(103.5)	(98.2)	(73.0)
Income before income taxes	1,136.1	901.0	1,330.8
Income tax provision (Note 16)	(112.9)	(205.2)	(795.3)
Net income	1,023.2	695.8	535.5
Net (loss) attributable to noncontrolling interests	(0.2)	0.0	0.0
Net income attributable to Rockwell Automation, Inc.	$ 1,023.4	$ 695.8	$ 535.5
Earnings per share:
Basic (in dollars per share)	$ 8.83	$ 5.88	$ 4.27
Diluted (in dollars per share)	$ 8.77	$ 5.83	$ 4.21
Weighted average outstanding shares:
Basic (in shares)	115.8	118.3	125.4
Diluted (in shares)	116.6	119.3	126.9
Products and solutions
Sales
Total sales	$ 5,663.6	$ 5,938.5	$ 5,930.5
Cost of sales
Cost of sales	(3,305.9)	(3,313.6)	(3,327.5)
Services
Sales
Total sales	666.2	756.3	735.5
Cost of sales
Cost of sales	$ (428.7)	$ (481.1)	$ (453.6)