Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

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

	Architecture & Software			Control Products & Solutions			Total
Balance as of September 30, 2019	$	432.3		$	638.8		$	1,071.1
Acquisition of businesses	—			304.5			304.5
Translation	(3.5		)	(9.8		)	(13.3		)
Balance as of March 31, 2020	$	428.8		$	933.5		$	1,362.3

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

Other intangible assets consist of (in millions):

	March 31, 2020
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets:
Computer software products	$	190.6	$	133.4	$	57.2
Customer relationships	305.4		77.6		227.8
Technology	152.0		75.1		76.9
Trademarks	53.9		27.5		26.4
Other	13.8		12.8		1.0
Total amortized intangible assets	715.7		326.4		389.3
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Total	$	759.4	$	326.4	$	433.0

	September 30, 2019
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets:
Computer software products	$	190.6	$	128.3	$	62.3
Customer relationships	110.5		69.2		41.3
Technology	110.4		69.5		40.9
Trademarks	31.4		26.4		5.0
Other	10.6		9.7		0.9
Total amortized intangible assets	453.5		303.1		150.4
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Total	$	497.2	$	303.1	$	194.1