Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2024

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, 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	18.4		21.4		11.6		51.4
Balance as of September 30, 2023	$	595.8	$	2,420.1	$	513.3	$	3,529.2
Acquisition of businesses	283.1		—		133.5		416.6
Translation	21.6		17.0		8.9		47.5
Balance as of September 30, 2024	$	900.5	$	2,437.1	$	655.7	$	3,993.3
Gross carrying value of Goodwill	$	900.5	$	2,437.1	$	813.2	$	4,150.8
Accumulated impairment losses	—		—		(157.5)		(157.5)
Goodwill	$	900.5	$	2,437.1	$	655.7	$	3,993.3

Other Intangible Assets

Other intangible assets consist of (in millions):

	September 30, 2024
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets
Software products	$	104.5	$	75.5	$	29.0
Customer relationships	619.4		186.5		432.9
Technology	729.1		257.1		472.0
Trademarks	132.0		43.8		88.2
Other	5.9		5.4		0.5
Total amortized intangible assets	1,590.9		568.3		1,022.6
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Other intangible assets	$	1,634.6	$	568.3	$	1,066.3

	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