Consolidated Statement of Shareowners' Equity - USD ($) $ in Millions		Total	Total attributable to Rockwell Automation, Inc.	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive loss	Common stock in treasury, at cost	Noncontrolling interests
Beginning of period at Sep. 30, 2022		$ 3,016.0	$ 2,725.0	$ 181.0	$ 2,007.0	$ 8,412.0	$ (918.0)	$ (6,957.0)	$ 291.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		1,278.0	1,387.0			1,387.0			(109.0)
Other comprehensive income		128.0	128.0				128.0		0.0
Common stock issued (including share-based compensation impact)		177.0	177.0		95.0			82.0
Share repurchases		(312.0)	(312.0)					(312.0)
Cash dividends declared	[1]	(544.0)	(544.0)			(544.0)
End of period at Sep. 30, 2023		3,743.0	3,561.0	181.0	2,102.0	9,255.0	(790.0)	(7,187.0)	182.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		948.0	953.0			953.0			(5.0)
Other comprehensive income		18.0	18.0				18.0		0.0
Common stock issued (including share-based compensation impact)		139.0	139.0		86.0			53.0
Share repurchases		(600.0)	(600.0)					(600.0)
Cash dividends declared	[1]	(573.0)	(573.0)			(573.0)
End of period at Sep. 30, 2024		3,675.0	3,498.0	181.0	2,188.0	9,635.0	(772.0)	(7,734.0)	177.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		749.0	869.0			869.0			(120.0)
Other comprehensive income		115.0	115.0				115.0		0.0
Common stock issued (including share-based compensation impact)		188.0	188.0		95.0			93.0
Share repurchases		(423.0)	(423.0)					(423.0)
Retirement of treasury shares		0.0	0.0	(40.0)		(4,489.0)		4,529.0
Cash dividends declared	[1]	(593.0)	(593.0)			(593.0)
End of period at Sep. 30, 2025		$ 3,711.0	$ 3,654.0	$ 141.0	$ 2,283.0	$ 5,422.0	$ (657.0)	$ (3,535.0)	$ 57.0

[1] Cash dividends were $5.24 per share in 2025; $5.00 per share in 2024; and $4.72 per share in 2023.