Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

Changes in the carrying amount of goodwill for the years ended September 30, 2016 and 2015 were (in millions):

	Architecture & Software			Control Products & Solutions			Total
Balance as of September 30, 2014	$	395.6		$	655.0		$	1,050.6
Acquisition of business	—			14.9			14.9
Translation	(7.6		)	(29.1		)	(36.7		)
Balance as of September 30, 2015	388.0			640.8			1,028.8
Acquisition of businesses	35.0			37.7			72.7
Translation	(8.5		)	(19.1		)	(27.6		)
Balance as of September 30, 2016	$	414.5		$	659.4		$	1,073.9

Other intangible assets

Other intangible assets consist of (in millions):

	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

	September 30, 2015
	Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets:
Computer software products	$	182.4	$	91.9	$	90.5
Customer relationships	87.2		50.1		37.1
Technology	83.4		44.1		39.3
Trademarks	32.3		16.3		16.0
Other	11.5		8.6		2.9
Total amortized intangible assets	396.8		211.0		185.8
Allen-Bradley® trademark not subject to amortization	43.7		—		43.7
Total	$	440.5	$	211.0	$	229.5