Segment and Geographic Information (Tables)

12 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

Segment Reporting

	As of and for the year ended September 30,
	2016			2015			2014
(In millions)
Sales
Materials	$	756.7		$	743.4		$	640.0
Delivery Systems and Services	213.4			265.9			302.5
Combined Total	$	970.1		$	1,009.3		$	942.5
Operating Income (Loss)
Materials	$	252.3		$	213.7		$	124.6
Delivery Systems and Services	50.8			49.1			57.6
Corporate	(23.3		)	(19.2		)	(19.7		)
Segment Total	$	279.8		$	243.6		$	162.5
Business separation, restructuring and cost reduction actions	(0.9		)	(21.6		)	(1.3		)
Combined Total	$	278.9		$	222.0		$	161.2
Depreciation and Amortization
Materials	$	44.4		$	48.1		$	52.7
Delivery Systems and Services	2.1			8.3			6.3
Corporate	0.4			0.5			0.5
Combined Total	$	46.9		$	56.9		$	59.5
Equity Affiliates’ Income
Materials	$	0.2		$	1.0		$	1.7
Combined Total	$	0.2		$	1.0		$	1.7
Total Assets
Materials	$	733.4		$	754.8		$	828.1
Delivery Systems and Services	104.0			92.7			137.0
Corporate	206.4			39.9			68.9
Combined Total	$	1,043.8		$	887.4		$	1,034.0
Investment in Net Assets of and Advances to Equity Affiliates
Materials	$	—		$	12.5		$	14.1
Combined Total	$	—		$	12.5		$	14.1
Expenditures for Long-Lived Assets
Materials	$	34.4		$	21.2		$	17.9
Delivery Systems and Services	0.7			0.8			6.0
Corporate	0.7			0.1			0.4
Combined Total	$	35.8		$	22.1		$	24.3

Sales by Product Group

	Year Ended September 30,
	2016		2015		2014
(In millions)
Process Materials	$	387.4	$	387.3	$	321.8
Advanced Materials	369.3		356.1		318.2
Equipment and Installations	150.8		208.3		244.1
Site Services	62.6		57.6		58.4
Total	$	970.1	$	1,009.3	$	942.5

Geographic Information

	Year Ended September 30,
(In millions)	2016		2015		2014
Sales to External Customers
United States	$	349.4	$	361.3	$	330.3
Taiwan	230.8		236.3		228.0
South Korea	217.2		220.3		184.3
China	53.8		70.9		76.9
Europe	57.8		69.2		70.3
Asia, excluding China, Taiwan, and South Korea	61.1		51.3		52.7
Total	$	970.1	$	1,009.3	$	942.5

	September 30,
(In millions)	2016		2015		2014
Long-Lived Assets(A)
United States	$	138.3	$	139.9	$	153.9
South Korea	112.2		105.0		122.0
Taiwan	36.8		39.7		43.7
Asia, excluding Taiwan and South Korea	9.0		16.4		31.4
Europe	0.2		0.1		0.9
Total	$	296.5	$	301.1	$	351.9

^(A)  Long-lived assets include plant and equipment, net.