Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

Changes in the carrying amount of goodwill were (in millions):

	Architecture & Software			Control Products & Solutions			Total
Balance as of September 30, 2017	$	417.2		$	660.5		$	1,077.7
Acquisition of businesses	6.8			—			6.8
Translation	(1.7		)	(7.3		)	(9.0		)
Balance as of September 30, 2018	422.3			653.2			1,075.5
Acquisition of business	14.6			—			14.6
Translation	(4.6		)	(14.4		)	(19.0		)
Balance as of September 30, 2019	$	432.3		$	638.8		$	1,071.1

Other Intangible Assets

Other intangible assets consist of (in millions):

	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

	September 30, 2018
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets:
Computer software products	$	190.9	$	118.1	$	72.8
Customer relationships	112.9		66.2		46.7
Technology	106.8		64.0		42.8
Trademarks	32.0		24.0		8.0
Other	11.2		10.0		1.2
Total amortized intangible assets	453.8		282.3		171.5
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Total	$	497.5	$	282.3	$	215.2