CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Consolidated net income (loss)	$ (2.8)	$ 35.3
Less net income attributable to noncontrolling interest	0.7
Net income (loss) attributable to Axiall	(3.5)	35.3
Other comprehensive income (loss):
Foreign currency translation gain (loss)	(11.5)	7.0
Unrealized loss on derivatives		(1.4)
Pension liability adjustment	0.5	0.4
Other comprehensive income (loss), before income taxes	(11.0)	6.0
Provision for (benefit from) income taxes related to other comprehensive income items	(3.3)	3.1
Other comprehensive income (loss), net of tax	(7.7)	2.9
Comprehensive income (loss), net of income taxes	(10.5)	38.2
Less comprehensive income attributable to noncontrolling interest	0.7
Comprehensive income (loss) attributable to Axiall	$ (11.2)	$ 38.2