SUPPLEMENTAL GUARANTOR INFORMATION (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		1 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Feb. 28, 2013 9 percent notes	Mar. 31, 2013 Parent Company	Mar. 31, 2012 Parent Company	Mar. 31, 2012 Guarantor Subsidiaries 9 percent notes	Mar. 31, 2013 Guarantor Subsidiaries 4.625 Notes, 4.875 Notes and Term Loan	Mar. 31, 2012 Non-Guarantor Subsidiaries 9 percent notes	Mar. 31, 2013 Non-Guarantor Subsidiaries 4.625 Notes, 4.875 Notes and Term Loan	Mar. 31, 2013 Eliminations	Mar. 31, 2012 Eliminations
Supplemental Condensed Consolidating Statement of Operations and Comprehensive Income
Net sales	$ 1,061.2	$ 859.9				$ 781.7	$ 971.7	$ 126.8	$ 135.6	$ (46.1)	$ (48.6)
Operating costs and expenses:
Cost of sales	899.0	756.4				692.8	825.5	112.2	119.6	(46.1)	(48.6)
Selling, general and administrative expenses	78.3	47.7		8.2	7.8	23.2	51.1	16.7	19.0
Transaction related costs and other, net	10.1	5.3		9.1	5.0	0.3	0.7		0.3
Long-lived asset impairment charges (recoveries), net	2.6	(0.3)				(0.3)	2.6
Gain on sale of assets		(17.4)				(17.4)
Total operating costs and expenses	990.0	791.7		17.3	12.8	698.6	879.9	128.9	138.9	(46.1)	(48.6)
Operating income	71.2	68.2		(17.3)	(12.8)	83.1	91.8	(2.1)	(3.3)
Other income (expense):
Loss on redemption and other debt costs	(78.5)		2.2	(66.1)			(12.4)
Interest income (expense), net	(18.3)	(14.4)		(16.5)	(21.5)	13.0	3.8	(5.9)	(5.6)
Gain on acquisition of controlling interest	23.5						23.5
Foreign exchange gain (loss)	0.1	(0.1)		(0.1)	0.3			(0.4)	0.2
Equity in income (loss) of subsidiaries				83.9	57.7	(0.8)	2.3			(86.2)	(56.9)
Income (loss) before income taxes	(2.0)	53.7		(16.1)	23.7	95.3	109.0	(8.4)	(8.7)	(86.2)	(56.9)
Provision for (benefit from) income taxes	0.8	18.4		(12.6)	(11.6)	30.1	16.0	(0.1)	(2.6)
Consolidated net income (loss)	(2.8)	35.3		(3.5)	35.3	65.2	93.0	(8.3)	(6.1)	(86.2)	(56.9)
Less net income attributable to noncontrolling interest	0.7								0.7
Net income (loss) attributable to Axiall	(3.5)	35.3		(3.5)	35.3	65.2	93.0	(8.3)	(6.8)	(86.2)	(56.9)
Comprehensive income (loss) attributable to Axiall	$ (10.5)	$ 38.2		$ (11.2)	$ 38.2	$ 64.4	$ 89.1	$ (10.6)	$ (9.2)	$ (79.9)	$ (53.8)