Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of Goodwill for the six months ended March 31, 2024, were (in millions):

	Intelligent Devices		Software & Control		Lifecycle Services		Total
Balance as of September 30, 2023	$	595.8	$	2,420.1	$	513.3	$	3,529.2
Acquisition of businesses	289.0		—		132.8		421.8
Translation	6.0		4.8		2.6		13.4
Balance as of March 31, 2024	$	890.8	$	2,424.9	$	648.7	$	3,964.4
Gross carrying value of goodwill	890.8		2,424.9		806.2		4,121.9
Accumulated impairment losses	—		—		(157.5)		(157.5)
Goodwill	$	890.8	$	2,424.9	$	648.7	$	3,964.4

Schedule of Finite Lived and Indefinite Lived Intangible Assets by Major Class

Other intangible assets consist of (in millions):

	March 31, 2024
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets
Software products	$	103.4	$	70.0	$	33.4
Customer relationships	617.1		163.0		454.1
Technology	729.0		214.8		514.2
Trademarks	131.4		36.6		94.8
Other	5.7		5.2		0.5
Total amortized intangible assets	1,586.6		489.6		1,097.0
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Other intangible assets	$	1,630.3	$	489.6	$	1,140.7

	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