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Acquisition (Purchase Price Allocation) (Details) - USD ($) $ in Thousands | Aug. 31, 2016 | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill |  | $ 950,681 | $ 946,553
Customer Relationships [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Weighted average useful life | 10 years 8 months 12 days |  |
Trade Name [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Weighted average useful life | 6 years 9 months 18 days |  |
Technology [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Weighted average useful life | 5 years 4 months 24 days |  |
Supply Contracts and Leases [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Weighted average useful life | 6 years 3 months 18 days |  |
Axiall Corporation [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Business Combination, Acquired Receivables, Fair Value | $ 422,459 |  |
Cash | 88,251 |  |
Accounts receivable (1) | 422,459 |  |
Income tax receivable | 55,193 |  |
Inventories | 306,158 |  |
Prepaid expenses and other current assets | 55,462 |  |
Property, plant and equipment | 3,134,741 |  |
Other assets | 98,708 |  |
Total assets acquired | 4,869,760 |  |
Accounts and notes payable | 255,232 |  |
Interest payable | 8,154 |  |
Income tax payable | 967 |  |
Accrued compensation | 44,186 |  |
Accrued liabilities | 152,550 |  |
Deferred income taxes | 985,128 |  |
Tax reserve non-current | 3,130 |  |
Pension and other post-retirement obligations | 311,106 |  |
Other liabilities | 99,848 |  |
Long-term debt | 1,187,290 |  |
Total liabilities assumed | 3,047,591 |  |
Total identifiable net assets acquired | 1,822,169 |  |
Noncontrolling interest | (68,000) |  |
Goodwill | 887,491 |  |
Total fair value allocated to net assets acquired | 2,641,660 |  |
Business Combination, Acquired Receivables, Gross Contractual Amount | 434,834 |  |
Business Combination, Acquired Receivables, Estimated Uncollectible | 12,375 |  |
Axiall Corporation [Member] | Customer Relationships [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Finite-lived intangibles | 590,000 |  |
Axiall Corporation [Member] | Trade Name [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Finite-lived intangibles | 50,000 |  |
Axiall Corporation [Member] | Technology [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Finite-lived intangibles | 41,500 |  |
Axiall Corporation [Member] | Supply Contracts and Leases [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Finite-lived intangibles | $ 27,288 |  |

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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition Amount, after allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary difference assumed at the acquisition date that are classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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- Definition The amount of inventory recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464 + Details
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- Definition Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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