GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

The following table provides the detail of the changes made to goodwill during the nine months ended September 30, 2015.

(In millions)	Chlorovinyls			Building Products			Total
Gross goodwill at December 31, 2014	$	1,790.8		$	160.2		$	1,951.0
Accumulated impairment losses		(59.6	)		(150.4	)		(210.0	)
Net goodwill at December 31, 2014	$	1,731.2		$	9.8		$	1,741.0

Gross goodwill at December 31, 2014	$	1,790.8		$	160.2		$	1,951.0
Goodwill impairment charge		(847.8	)		-			(847.8	)
Foreign currency translation adjustment		(21.5	)		-			(21.5	)
Gross goodwill at September 30, 2015		921.5			160.2			1,081.7
Accumulated impairment losses		(59.6	)		(150.4	)		(210.0	)
Net goodwill at September 30, 2015	$	861.9		$	9.8		$	871.7

The following table provides the definite‑lived intangible assets, by reportable segment, as of September 30, 2015 and December 31, 2014.

	Chlorovinyls						Building Products						Total
(In millions)	September 30, 2015			December 31, 2014			September 30, 2015			December 31, 2014			September 30, 2015			December 31, 2014
Gross carrying amounts:
Customer relationships	$	1,142.3		$	1,142.3		$	32.2		$	32.2		$	1,174.5		$	1,174.5
Supply contracts		42.6			42.6			-			-			42.6			42.6
Technology		14.9			14.9			17.4			17.4			32.3			32.3
Trade names		6.0			6.0			-			-			6.0			6.0
Total		1,205.8			1,205.8			49.6			49.6			1,255.4			1,255.4
Accumulated impairment charges:
Customer relationships		(2.9	)		(2.6	)		-			-			(2.9	)		(2.6	)
Total		(2.9	)		(2.6	)		-			-			(2.9	)		(2.6	)
Accumulated amortization:
Customer relationships		(167.4	)		(121.1	)		(13.3	)		(12.1	)		(180.7	)		(133.2	)
Supply contracts		(5.6	)		(4.1	)		-			-			(5.6	)		(4.1	)
Technology		(1.8	)		(1.3	)		(13.8	)		(12.7	)		(15.6	)		(14.0	)
Trade names		(0.9	)		(0.7	)		-			-			(0.9	)		(0.7	)
Total		(175.7	)		(127.2	)		(27.1	)		(24.8	)		(202.8	)		(152.0	)
Foreign currency translation adjustment:
Customer relationships		(23.4	)		(14.2	)		(0.1	)		-			(23.5	)		(14.2	)
Total		(23.4	)		(14.2	)		(0.1	)		-			(23.5	)		(14.2	)
Net carrying amounts:
Customer relationships		948.6			1,004.4			18.8			20.1			967.4			1,024.5
Supply contracts		37.0			38.5			-			-			37.0			38.5
Technology		13.1			13.6			3.6			4.7			16.7			18.3
Trade names		5.1			5.3			-			-			5.1			5.3
Total	$	1,003.8		$	1,061.8		$	22.4		$	24.8		$	1,026.2		$	1,086.6