Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

Changes in the carrying amount of Goodwill were (in millions):

	Intelligent Devices		Software & Control		Lifecycle Services		Total
Balance as of October 1, 2021	$	543.1	$	2,447.5	$	635.3	$	3,625.9
Acquisition of businesses	—		—		12.1		12.1
Translation and other	(40.1)		(48.8)		(25.1)		(114.0)
Balance as of September 30, 2022	$	503.0	$	2,398.7	$	622.3	$	3,524.0
Acquisition of businesses	74.4		—		36.9		111.3
Impairment	—		—		(157.5)		(157.5)
Translation and other	18.4		21.4		11.6		51.4
Balance as of September 30, 2023	$	595.8	$	2,420.1	$	513.3	$	3,529.2
Gross carrying value of Goodwill	595.8		2,420.1		670.8		3,686.7
Accumulated impairment losses	—		—		(157.5)		(157.5)
Goodwill	$	595.8	$	2,420.1	$	513.3	$	3,529.2

Other Intangible Assets

Other intangible assets consist of (in millions):

	September 30, 2023
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets
Software products	$	100.4	$	65.1	$	35.3
Customer relationships	606.1		141.3		464.8
Technology	424.1		173.1		251.0
Trademarks	86.3		29.3		57.0
Other	6.0		5.4		0.6
Total amortized intangible assets	1,222.9		414.2		808.7
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Other intangible assets	$	1,266.6	$	414.2	$	852.4

	September 30, 2022
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets
Software products	$	97.6	$	57.9	$	39.7
Customer relationships	582.7		107.2		475.5
Technology	410.8		119.3		291.5
Trademarks	70.4		19.4		51.0
Other	6.4		5.8		0.6
Total amortized intangible assets	1,167.9		309.6		858.3
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Other intangible assets	$	1,211.6	$	309.6	$	902.0