SEGMENT INFORMATION (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Segment Information

	Years ended December 31,
	2015			2014			2013
Sales:	($ in millions)
Chlor Alkali Products and Vinyls	$	1,713.4		$	1,502.8		$	1,737.4
Epoxy	429.6			—			—
Winchester	711.4			738.4			777.6
Total sales	$	2,854.4		$	2,241.2		$	2,515.0
Income (loss) from continuing operations before taxes:
Chlor Alkali Products and Vinyls	$	115.5		$	130.1		$	213.5
Epoxy	(7.5		)	—			—
Winchester	115.6			127.3			143.2
Corporate/Other	(40.8		)	(33.9		)	(62.6		)
Restructuring charges	(2.7		)	(15.7		)	(5.5		)
Acquisition-related costs	(123.4		)	(4.2		)	—
Other operating income	45.7			1.5			0.7
Interest expense	(97.0		)	(43.8		)	(38.6		)
Interest income	1.1			1.3			0.6
Other income (expense)	0.2			0.1			(1.3		)
Income from continuing operations before taxes	$	6.7		$	162.7		$	250.0
Earnings of non-consolidated affiliates:
Chlor Alkali Products and Vinyls	$	1.7		$	1.7		$	2.8
Depreciation and amortization expense:
Chlor Alkali Products and Vinyls	$	186.1		$	119.4		$	117.5
Epoxy	20.9			—			—
Winchester	17.4			16.3			14.9
Corporate/Other	4.5			3.4			2.9
Total depreciation and amortization expense	$	228.9		$	139.1		$	135.3
Capital spending:
Chlor Alkali Products and Vinyls	$	94.5		$	49.6		$	68.0
Epoxy	7.7			—			—
Winchester	25.6			21.4			21.2
Corporate/Other	3.1			0.8			1.6
Total capital spending	$	130.9		$	71.8		$	90.8

	December 31,
	2015		2014
Assets:	($ in millions)
Chlor Alkali Products and Vinyls	$	6,690.7	$	1,939.0
Epoxy	1,591.2		—
Winchester	411.9		361.0
Corporate/Other	628.0		398.1
Total assets	$	9,321.8	$	2,698.1
Investments—affiliated companies (at equity):
Chlor Alkali Products and Vinyls	$	25.0	$	23.3

Segment geographic data

	Years ended December 31,
Geographic Data	2015		2014		2013
Sales:	($ in millions)
United States	$	2,208.5	$	2,051.4	$	2,316.2
Foreign	645.9		189.8		198.8
Total sales	$	2,854.4	$	2,241.2	$	2,515.0

	December 31,
	2015		2014
Long-lived assets:	($ in millions)
United States	$	3,561.7	$	889.6
Foreign	391.7		41.4
Total long-lived assets	$	3,953.4	$	931.0