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MERGER WITH THE PPG CHEMICALS BUSINESS (Details) (USD $)
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12 Months Ended | 12 Months Ended | 0 Months Ended | 11 Months Ended | 12 Months Ended | ||||||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Jan. 28, 2013
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Dec. 31, 2013
Bridge loan
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Dec. 31, 2012
Bridge loan
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Jan. 28, 2013
Merged Business
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Dec. 31, 2013
Merged Business
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Dec. 31, 2013
Merged Business
Measurement Period Adjustments
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Dec. 31, 2013
PHH
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Dec. 31, 2012
PHH
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| Purchase price paid for the Merger | |||||||||||
| Purchase price | $ (2,800,000,000) | ||||||||||
| Value of shares of common stock issued for acquisition | 1,800,000,000 | ||||||||||
| Share price (in dollars per share) | $ 50.24 | ||||||||||
| Debt assumed | 967,000,000 | ||||||||||
| Payment of fees and expenses in connection with the merger | 56,300,000 | ||||||||||
| Debt issuance costs | 98,100,000 | 1,500,000 | 2,000,000 | 30,300,000 | |||||||
| Deferred debt issuance cost | 28,800,000 | 16,300,000 | 19,300,000 | ||||||||
| Professional and legal fees | 26,000,000 | ||||||||||
| Goodwill expected to be deductible for tax purposes | 5,900,000 | ||||||||||
| Allocation of the purchase price to assets acquired and liabilities assumed | |||||||||||
| Cash and cash equivalents | 26,700,000 | 26,700,000 | |||||||||
| Receivables | 236,700,000 | 234,300,000 | (2,400,000) | ||||||||
| Inventories | 72,000,000 | 77,100,000 | 5,100,000 | ||||||||
| Prepaid expenses and other | 11,900,000 | 7,600,000 | (4,300,000) | ||||||||
| Property, plant and equipment | 957,300,000 | 926,900,000 | (30,400,000) | ||||||||
| Goodwill | 1,969,100,000 | 404,900,000 | 401,300,000 | 1,454,300,000 | 1,572,700,000 | 118,400,000 | |||||
| Intangible assets | 1,224,200,000 | 1,205,800,000 | (18,400,000) | ||||||||
| Other assets | 42,500,000 | 42,200,000 | (300,000) | ||||||||
| Accounts payable | (97,800,000) | (96,600,000) | 1,200,000 | ||||||||
| Income taxes payable | (4,700,000) | (4,700,000) | |||||||||
| Accrued compensation | (20,600,000) | (20,600,000) | |||||||||
| Other accrued taxes | (12,100,000) | (200,000) | 11,900,000 | ||||||||
| Other accrued liabilities | (58,000,000) | (62,500,000) | (4,500,000) | ||||||||
| Deferred income taxes | (84,900,000) | (614,900,000) | (681,400,000) | (66,500,000) | |||||||
| Pension and other postretirement benefits | (279,000,000) | (252,300,000) | 26,700,000 | ||||||||
| Other non-current liabilities | (67,900,000) | (78,500,000) | (10,600,000) | ||||||||
| Debt assumed | (967,000,000) | (967,000,000) | |||||||||
| Noncontrolling interest | (130,300,000) | (130,000,000) | 300,000 | ||||||||
| Total net assets acquired | 1,773,300,000 | 1,799,500,000 | 26,200,000 | ||||||||
| Unaudited pro forma information | |||||||||||
| Net sales | 4,773,700,000 | 4,977,400,000 | |||||||||
| Net income attributable to Axiall | 162,700,000 | 271,800,000 | |||||||||
| Earnings per share from net income attributable to Axiall - Basic (in dollars per share) | $ 2.33 | $ 3.88 | |||||||||
| Earnings per share from net income attributable to Axiall - Diluted (in dollars per share) | $ 2.31 | $ 3.87 | |||||||||
| Additional disclosures | |||||||||||
| Estimated gain on acquisition of controlling interest | 25,900,000 | 25,900,000 | 25,900,000 | ||||||||
| Merger inventory fair value purchase accounting adjustment | 13,400,000 | 13,400,000 | |||||||||
| Financing fees associated with merger | 11,000,000 | 11,000,000 | |||||||||
| Face amount of debt | $ 688,000,000 | $ 688,000,000 | |||||||||
| Certificate of Amendment to Increase Authorized Shares | |||||||||||
| Common stock, shares authorized (in shares) | 200,000,000 | 100,000,000 | 200,000,000 | ||||||||