Goodwill and Other Intangible Assets

3 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of Goodwill for the three months ended December 31, 2023, 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	267.0		—		133.0		400.0
Translation	16.9		13.5		7.1		37.5
Balance as of December 31, 2023	$	879.7	$	2,433.6	$	653.4	$	3,966.7

Gross carrying value of goodwill	879.7		2,433.6		810.9		4,124.2
Accumulated impairment losses	—		—		(157.5)		(157.5)
Goodwill	$	879.7	$	2,433.6	$	653.4	$	3,966.7

We perform our annual evaluation of goodwill and indefinite life intangible assets for impairment during the second quarter of each year, or more frequently, if events or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. We assessed the changes in events and circumstances during the first quarter of 2024 and concluded that no triggering events, which would require interim quantitative testing, occurred.

Other intangible assets consist of (in millions):


	December 31, 2023
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets
Software products	$	105.1	$	67.8	$	37.3
Customer relationships	618.4		152.2		466.2
Technology	737.6		194.8		542.8
Trademarks	133.0		33.1		99.9
Other	5.7		5.2		0.5
Total amortized intangible assets	1,599.8		453.1		1,146.7
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Other intangible assets	$	1,643.5	$	453.1	$	1,190.4


	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

Estimated total amortization expense for all amortized intangible assets is $153.5 million in 2024, $150.0 million in 2025, $148.7 million in 2026, $140.6 million in 2027, and $127.8 million in 2028.