Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill for the nine months ended June 30, 2017, are (in millions):

	Architecture & Software			Control Products & Solutions			Total
Balance as of September 30, 2016	$	414.5		$	659.4		$	1,073.9
Acquisition of business	—			0.8			0.8
Translation	(1.2		)	(3.8		)	(5.0		)
Balance as of June 30, 2017	$	413.3		$	656.4		$	1,069.7

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

Other intangible assets consist of (in millions):

	June 30, 2017
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets:
Computer software products	$	182.7	$	110.6	$	72.1
Customer relationships	112.0		57.7		54.3
Technology	103.4		54.9		48.5
Trademarks	31.0		19.3		11.7
Other	10.8		9.2		1.6
Total amortized intangible assets	439.9		251.7		188.2
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Total	$	483.6	$	251.7	$	231.9

	September 30, 2016
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets:
Computer software products	$	182.4	$	103.4	$	79.0
Customer relationships	112.6		51.9		60.7
Technology	103.9		48.5		55.4
Trademarks	31.4		17.0		14.4
Other	11.0		8.9		2.1
Total amortized intangible assets	441.3		229.7		211.6
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Total	$	485.0	$	229.7	$	255.3