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Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Financial Data | The following table sets forth certain quarterly financial data. The quarterly earnings (loss) per share amounts for a year will not add to the earnings per share for that year due to weighting of shares used in calculating per share data.
|  | Quarter and Year Ended December 31, 2015 |
(In millions, except per share data) |  | Q1 |  |  | Q2 |  |  | Q3 |  |  | Q4 |
Net sales |  | $ | 814.8 |  |  | $ | 916.5 |  |  | $ | 874.4 |  |  | $ | 755.4 |
Gross margin |  |  | 101.8 |  |  |  | 127.3 |  |  |  | 117.5 |  |  |  | 45.6 |
Operating income (loss) |  |  | 15.4 |  |  |  | 42.4 |  |  |  | (811.3) |  |  |  | (57.4) |
Net income (loss) from continuing operations |  |  | (9.0) |  |  |  | 20.8 |  |  |  | (797.5) |  |  |  | (63.4) |
Consolidated net income (loss) |  |  | (8.8) |  |  |  | 21.9 |  |  |  | (792.5) |  |  |  | (57.7) |
Net income (loss) attributable to Axiall |  |  | (10.6) |  |  |  | 20.6 |  |  |  | (769.6) |  |  |  | (56.8) |
Earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.15) |  |  | $ | 0.29 |  |  | $ | (10.90) |  |  | $ | (0.80) |
Diluted |  | $ | (0.15) |  |  | $ | 0.29 |  |  | $ | (10.90) |  |  | $ | (0.80) |
|  | Quarter and Year Ended December 31, 2014 |
|  | Q1 |  |  | Q2 |  |  | Q3 |  |  | Q4 |
Net sales |  | $ | 836.9 |  |  | $ | 1,021.7 |  |  | $ | 1,047.2 |  |  | $ | 903.0 |
Gross margin |  |  | 74.6 |  |  |  | 153.0 |  |  |  | 158.8 |  |  |  | 130.1 |
Operating income (loss) |  |  | (4.9) |  |  |  | 65.8 |  |  |  | 72.2 |  |  |  | 21.7 |
Net income (loss) from continuing operations |  |  | (13.8) |  |  |  | 33.5 |  |  |  | 43.5 |  |  |  | 0.9 |
Consolidated net income (loss) |  |  | (10.6) |  |  |  | 28.1 |  |  |  | 45.1 |  |  |  | (12.4) |
Net income (loss) attributable to Axiall |  |  | (11.6) |  |  |  | 27.2 |  |  |  | 44.5 |  |  |  | (13.8) |
Earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.17) |  |  | $ | 0.39 |  |  | $ | 0.64 |  |  | $ | (0.20) |
Diluted |  | $ | (0.17) |  |  | $ | 0.38 |  |  | $ | 0.63 |  |  | $ | (0.20) |

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=51825399&loc=d3e1280-108306 + Details
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