SEGMENT INFORMATION (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Segment Information

	Years ended December 31,
	2016			2015			2014
Sales:	($ in millions)
Chlor Alkali Products and Vinyls	$	2,999.3		$	1,713.4		$	1,502.8
Epoxy	1,822.0			429.6			—
Winchester	729.3			711.4			738.4
Total sales	$	5,550.6		$	2,854.4		$	2,241.2
Income (loss) from continuing operations before taxes:
Chlor Alkali Products and Vinyls	$	224.9		$	115.5		$	130.1
Epoxy	15.4			(7.5		)	—
Winchester	120.9			115.6			127.3
Corporate/Other	(55.8		)	(40.6		)	(33.8		)
Restructuring charges	(112.9		)	(2.7		)	(15.7		)
Acquisition-related costs	(48.8		)	(123.4		)	(4.2		)
Other operating income	10.6			45.7			1.5
Interest expense	(191.9		)	(97.0		)	(43.8		)
Interest income	3.4			1.1			1.3
Income (loss) from continuing operations before taxes	$	(34.2	)	$	6.7		$	162.7
Earnings of non-consolidated affiliates:
Chlor Alkali Products and Vinyls	$	1.7		$	1.7		$	1.7
Depreciation and amortization expense:
Chlor Alkali Products and Vinyls	$	418.1		$	186.1		$	119.4
Epoxy	90.0			20.9			—
Winchester	18.5			17.4			16.3
Corporate/Other	6.9			4.5			3.4
Total depreciation and amortization expense	$	533.5		$	228.9		$	139.1
Capital spending:
Chlor Alkali Products and Vinyls	$	195.1		$	94.5		$	49.6
Epoxy	45.4			7.7			—
Winchester	19.5			25.6			21.4
Corporate/Other	18.0			3.1			0.8
Total capital spending	$	278.0		$	130.9		$	71.8

	December 31,
	2016		2015
Assets:	($ in millions)
Chlor Alkali Products and Vinyls	$	6,521.4	$	6,690.7
Epoxy	1,514.3		1,591.2
Winchester	424.0		411.9
Corporate/Other	302.9		595.1
Total assets	$	8,762.6	$	9,288.9
Investments—affiliated companies (at equity):
Chlor Alkali Products and Vinyls	$	26.7	$	25.0

Segment geographic data

	Years ended December 31,
Geographic Data	2016		2015		2014
Sales:	($ in millions)
United States	$	3,356.8	$	2,208.5	$	2,051.4
Foreign	2,193.8		645.9		189.8
Total sales	$	5,550.6	$	2,854.4	$	2,241.2

	December 31,
	2016		2015
Long-lived assets:	($ in millions)
United States	$	3,352.2	$	3,561.7
Foreign	352.7		391.7
Total long-lived assets	$	3,704.9	$	3,953.4