Condensed Consolidated Statements of Comprehensive Loss (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Condensed Consolidated Statements of Comprehensive Loss
Consolidated net loss	$ (8.8)us-gaap_ProfitLoss	$ (10.6)us-gaap_ProfitLoss
Less net income attributable to noncontrolling interest	1.8	1.0
Net loss attributable to Axiall	(10.6)us-gaap_NetIncomeLoss	(11.6)us-gaap_NetIncomeLoss
Other comprehensive loss:
Foreign currency translation adjustments	(35.0)	(24.5)
Derivative cash flow hedges	9.0	(0.3)
Pension and OPEB plan liability adjustments	(1.2)	(2.4)
Other comprehensive loss, before income taxes	(27.2)	(27.2)
Benefit from income taxes related to other comprehensive loss items	(0.7)us-gaap_OtherComprehensiveIncomeLossTax	(10.3)us-gaap_OtherComprehensiveIncomeLossTax
Other comprehensive loss, net of tax	(26.5)	(16.9)
Other comprehensive income (loss), attributable to noncontrolling interest, net of tax	1.3	(3.6)
Other comprehensive loss attributable to Axiall, net of tax	(27.8)	(13.3)
Comprehensive loss, net of income taxes	(35.3)	(27.5)
Less comprehensive income (loss) attributable to noncontrolling interest	3.1	(2.6)
Comprehensive loss attributable to Axiall	$ (38.4)us-gaap_ComprehensiveIncomeNetOfTax	$ (24.9)us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount before tax, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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