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Goodwill and Other Intangible Assets
 3 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets
Changes in the carrying amount of Goodwill for the three months ended December 31, 2024, were (in millions):
Intelligent DevicesSoftware & ControlLifecycle ServicesTotal
Balance as of September 30, 2024$900 $2,437 $656 $3,993 
Translation(35)(28)(15)(78)
Balance as of December 31, 2024$865 $2,409 $641 $3,915 
Gross carrying value of goodwill$865 $2,409 $799 $4,073 
Accumulated impairment losses— — (158)(158)
Goodwill$865 $2,409 $641 $3,915 
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 2025 and concluded that no triggering events, which would require interim quantitative testing, occurred.
Other intangible assets consist of (in millions):
 December 31, 2024
Carrying
Amount		Accumulated
Amortization		Net
Amortized intangible assets
Software products$107 $79 $28 
Customer relationships614 196 418 
Technology724 272 452 
Trademarks134 50 84 
Other6 5 1 
Total amortized intangible assets1,585 602 983 
Allen-Bradley® trademark not subject to amortization
44 — 44 
Other intangible assets$1,629 $602 $1,027 
 September 30, 2024
Carrying
Amount		Accumulated
Amortization		Net
Amortized intangible assets
Software products$105 $76 $29 
Customer relationships619 187 432 
Technology729 257 472 
Trademarks132 44 88 
Other6 5 1 
Total amortized intangible assets1,591 569 1,022 
Allen-Bradley® trademark not subject to amortization
44 — 44 
Other intangible assets$1,635 $569 $1,066 
Estimated total amortization expense for all amortized intangible assets is $152 million in 2025, $150 million in 2026, $141 million in 2027, $129 million in 2028, and $89 million in 2029.