Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill for the nine months ended June 30, 2018, are (in millions):

	Architecture & Software			Control Products & Solutions			Total
Balance as of September 30, 2017	$	417.2		$	660.5		$	1,077.7
Acquisition of business	6.8			—			6.8
Translation	(1.0		)	(5.0		)	(6.0		)
Balance as of June 30, 2018	$	423.0		$	655.5		$	1,078.5

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

Other intangible assets consist of (in millions):

	June 30, 2018
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets:
Computer software products	$	190.9	$	115.2	$	75.7
Customer relationships	113.8		65.3		48.5
Technology	107.2		62.8		44.4
Trademarks	32.2		23.4		8.8
Other	11.3		9.9		1.4
Total amortized intangible assets	455.4		276.6		178.8
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Total	$	499.1	$	276.6	$	222.5

	September 30, 2017
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets:
Computer software products	$	194.8	$	113.2	$	81.6
Customer relationships	114.5		61.5		53.0
Technology	104.8		57.9		46.9
Trademarks	32.3		21.1		11.2
Other	11.4		9.8		1.6
Total amortized intangible assets	457.8		263.5		194.3
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Total	$	501.5	$	263.5	$	238.0