Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill for the three months ended December 31, 2020, are (in millions):

	Architecture & Software		Control Products & Solutions		Intelligent Devices		Software & Control		Lifecycle Services		Total
Balance as of September 30, 2020	$	609.4	$	1,040.9	$	—	$	—	$	—	$	1,650.3
Reallocation due to change in Segments	(609.4)		(1,040.9)		535.1		497.3		617.9		—
Acquisition of businesses	—		—		—		209.4		12.4		221.8
Translation	—		—		10.5		9.3		10.3		30.1
Balance as of December 31, 2020	$	—	$	—	$	545.6	$	716.0	$	640.6	$	1,902.2

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

Other intangible assets consist of (in millions):

	December 31, 2020
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets:
Computer software products	$	192.7	$	141.6	$	51.1
Customer relationships	369.4		102.0		267.4
Technology	223.5		89.3		134.2
Trademarks	76.7		33.8		42.9
Other	15.5		14.5		1.0
Total amortized intangible assets	877.8		381.2		496.6
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Total	$	921.5	$	381.2	$	540.3

	September 30, 2020
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets:
Computer software products	$	192.7	$	139.0	$	53.7
Customer relationships	351.3		92.5		258.8
Technology	165.8		84.0		81.8
Trademarks	71.7		31.3		40.4
Other	14.4		13.5		0.9
Total amortized intangible assets	795.9		360.3		435.6
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Total	$	839.6	$	360.3	$	479.3