SEGMENT INFORMATION (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Segment Information

	Years ended December 31,
	2020		2019		2018
Sales:	($ in millions)
Chlor Alkali Products and Vinyls	$	2,959.9	$	3,420.1	$	3,986.7
Epoxy	1,870.5		2,024.4		2,303.1
Winchester	927.6		665.5		656.3
Total sales	$	5,758.0	$	6,110.0	$	6,946.1
Income (loss) before taxes:
Chlor Alkali Products and Vinyls	$	3.5	$	336.7	$	637.1
Epoxy	40.8		53.9		52.8
Winchester	92.3		40.1		38.4
Corporate/Other:
Environmental (expense) income	(20.9)		(20.5)		103.7
Other corporate and unallocated costs	(154.3)		(156.3)		(158.3)
Restructuring charges	(9.0)		(76.5)		(21.9)
Acquisition-related costs	—		—		(1.0)
Goodwill impairment	(699.8)		—		—
Other operating income	0.7		0.4		6.4
Interest expense	(292.7)		(243.2)		(243.2)
Interest income	0.5		1.0		1.6
Non-operating pension income	18.9		16.3		21.7
Other income	—		11.2		—
Income (loss) before taxes	$	(1,020.0)	$	(36.9)	$	437.3
Losses of non-consolidated affiliates:
Chlor Alkali Products and Vinyls	$	—	$	—	$	(19.7)
Depreciation and amortization expense:
Chlor Alkali Products and Vinyls	$	451.4	$	470.4	$	473.1
Epoxy	90.7		100.1		102.4
Winchester	20.1		20.1		20.0
Corporate/Other	6.2		6.8		5.9
Total depreciation and amortization expense	$	568.4	$	597.4	$	601.4
Capital spending:
Chlor Alkali Products and Vinyls	$	180.4	$	240.3	$	259.9
Epoxy	33.7		30.0		36.3
Winchester	24.5		12.1		14.7
Corporate/Other	60.3		103.2		74.3
Total capital spending	$	298.9	$	385.6	$	385.2

Segment assets include only those assets which are directly identifiable to an operating segment.  Assets of the corporate/other segment include primarily such items as cash and cash equivalents, deferred taxes and other assets.

	December 31,
	2020		2019
Assets:	($ in millions)
Chlor Alkali Products and Vinyls	$	6,165.5	$	6,898.7
Epoxy	1,153.2		1,469.1
Winchester	468.2		385.0
Corporate/Other	484.0		435.0
Total assets	$	8,270.9	$	9,187.8

Segment geographic data

Property, plant and equipment is attributed to geographic areas based on asset location and sales are attributed to geographic areas based on customer location.

	December 31,
	2020		2019
Property, plant and equipment:	($ in millions)
United States	$	2,860.1	$	3,017.4
Foreign	310.9		306.4
Total property, plant and equipment	$	3,171.0	$	3,323.8

Disaggregation of Revenue

	Years ended December 31,
	2020		2019		2018
Sales by geography:	($ in millions)
Chlor Alkali Products and Vinyls
United States	$	2,208.5	$	2,332.1	$	2,610.7
Europe	104.4		134.5		181.8
Other foreign	647.0		953.5		1,194.2
Total Chlor Alkali Products and Vinyls	2,959.9		3,420.1		3,986.7
Epoxy
United States	622.8		664.0		742.7
Europe	684.4		844.2		991.1
Other foreign	563.3		516.2		569.3
Total Epoxy	1,870.5		2,024.4		2,303.1
Winchester
United States	865.9		603.4		591.0
Europe	9.3		11.7		11.0
Other foreign	52.4		50.4		54.3
Total Winchester	927.6		665.5		656.3
Total
United States	3,697.2		3,599.5		3,944.4
Europe	798.1		990.4		1,183.9
Other foreign	1,262.7		1,520.1		1,817.8
Total sales	$	5,758.0	$	6,110.0	$	6,946.1

	Years ended December 31,
	2020		2019		2018
Sales by product line:	($ in millions)
Chlor Alkali Products and Vinyls
Caustic soda	$	1,408.3	$	1,737.4	$	2,198.6
Chlorine, chlorine derivatives and other co-products	1,551.6		1,682.7		1,788.1
Total Chlor Alkali Products and Vinyls	2,959.9		3,420.1		3,986.7
Epoxy
Aromatics and allylics	821.0		945.3		1,145.7
Epoxy resins	1,049.5		1,079.1		1,157.4
Total Epoxy	1,870.5		2,024.4		2,303.1
Winchester
Commercial	640.5		441.3		427.6
Military and law enforcement	287.1		224.2		228.7
Total Winchester	927.6		665.5		656.3
Total sales	$	5,758.0	$	6,110.0	$	6,946.1