Summary By Quarter (Unaudited)

12 Months Ended

Sep. 30, 2017

Quarterly Financial Information Disclosure [Abstract]

Summary By Quarter (Unaudited)

25.SUMMARY BY QUARTER (UNAUDITED)

These tables summarize the unaudited results of operations for each quarter of fiscal 2017 and 2016:

	For the Quarter Ended
	December 31, 2016			March 31, 2017			June 30, 2017			September 30, 2017			Total
(In millions)
Sales	$	270.8		$	270.8		$	290.8		$	294.5		$	1,126.9
Cost of sales	150.9			154.5			159.6			171.9			636.9
Selling and administrative	30.2			29.5			34.5			31.5			125.7
Research and development	10.3			10.9			11.9			12.0			45.1
Business separation, restructuring and cost reduction actions	3.2			6.1			6.0			10.2			25.5
Other (income) expense, net	(2.9		)	(0.1		)	(2.2		)	(1.2		)	(6.4		)
Operating Income	79.1			69.9			81.0			70.1			300.1
Equity affiliates’ income	—			—			—			—			—
Interest expense	11.5			11.6			11.9			12.4			47.4
Income Before Taxes	67.6			58.3			69.1			57.7			252.7
Income tax provision	15.3			11.5			14.4			11.6			52.8
Net Income	52.3			46.8			54.7			46.1			199.9
Less: Net Income Attributable to Non-controlling Interests	1.5			1.9			2.0			1.5			6.9
Net Income Attributable to Versum	$	50.8		$	44.9		$	52.7		$	44.6		$	193.0

	For the Quarter Ended
	December 31, 2015			March 31, 2016			June 30, 2016			September 30, 2016			Total
(In millions)
Sales	$	245.5		$	233.5		$	242.7		$	248.4		$	970.1
Cost of sales	132.4			132.5			135.9			138.7			539.5
Selling and administrative	23.6			25.7			27.3			33.2			109.8
Research and development	10.9			10.2			11.3			11.5			43.9
Business separation, restructuring and cost reduction actions	(0.9		)	(1.8		)	1.1			2.5			0.9
Other (income) expense, net	(1.1		)	(1.0		)	(0.3		)	(0.5		)	(2.9		)
Operating Income	80.6			67.9			67.4			63.0			278.9
Equity affiliates’ income	0.2			—			—			—			0.2
Interest expense	—			—			—			0.4			0.4
Income Before Taxes	80.8			67.9			67.4			62.6			278.7
Income tax provision	13.4			12.2			17.6			15.6			58.8
Net Income	67.4			55.7			49.8			47.0			219.9
Less: Net Income Attributable to Non-controlling Interests	2.2			1.9			2.0			1.8			7.9
Net Income Attributable to Versum	$	65.2		$	53.8		$	47.8		$	45.2		$	212.0