Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 378,700	$ 238,900
Other comprehensive (loss) income
Pension and other postretirement benefit plan adjustments (net of tax benefit (expense) of $0.4 and ($5.4))	(400)	16,900
Currency translation adjustments	85,800	(19,500)
Net change in cash flow hedges (net of tax benefit (expense) of $8.9 and ($2.6))	(21,100)	7,500
Other comprehensive income	64,300	4,900
Comprehensive income	443,000	243,800
Comprehensive loss attributable to noncontrolling interests	(5,300)	(2,600)
Comprehensive income attributable to Rockwell Automation, Inc.	$ 448,300	$ 246,400