Reportable Segments - Reconciliation of Net Loss to Adjusted EBITDA (Details) - USD ($) |
3 Months Ended | 12 Months Ended | |||||||||
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Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Segment Reporting Information | |||||||||||
| Net income (loss) attributable to PQ Group Holdings Inc. | $ 65,011,000 | $ (3,345,000) | $ (1,609,000) | $ (2,454,000) | $ 10,664,000 | $ (10,017,000) | $ (77,262,000) | $ (3,131,000) | $ 57,603,000 | $ (79,746,000) | $ 11,427,000 |
| (Benefit) provision for income taxes | (119,197,000) | 10,041,000 | 0 | ||||||||
| Interest expense, net | 179,044,000 | 140,315,000 | 44,348,000 | ||||||||
| Depreciation and amortization | 177,140,000 | 128,288,000 | 38,999,000 | ||||||||
| Segment EBITDA | 294,590,000 | 198,898,000 | 94,774,000 | ||||||||
| Debt extinguishment costs (Note 15) | 61,886,000 | 13,782,000 | 0 | ||||||||
| Losses on disposal of fixed assets | 5,793,000 | 4,216,000 | 3,911,000 | ||||||||
| Foreign currency exchange (gain) loss | 25,786,000 | (3,558,000) | 0 | ||||||||
| Management advisory fees | 3,777,000 | 3,584,000 | 590,000 | ||||||||
| Acquisition costs | 7,415,000 | 4,952,000 | 4,241,000 | ||||||||
| Restructuring, integration and business optimization expenses | 5,541,000 | 5,093,000 | 3,971,000 | ||||||||
| Corporate, non-segment | |||||||||||
| Segment Reporting Information | |||||||||||
| Unallocated corporate expenses | 30,422,000 | 23,971,000 | 0 | ||||||||
| Segment reconciling items | |||||||||||
| Segment Reporting Information | |||||||||||
| Joint venture depreciation, amortization, and interest | 11,070,000 | 6,920,000 | 0 | ||||||||
| Investment in affiliate and inventory step-up amortization | 8,600,000 | 36,296,000 | 0 | ||||||||
| Amortization of inventory step-up | 871,000 | 29,086,000 | 0 | ||||||||
| Impairment of fixed assets, intangibles and goodwill | 0 | 6,873,000 | 0 | ||||||||
| Debt extinguishment costs (Note 15) | 61,886,000 | 13,782,000 | 0 | ||||||||
| Losses on disposal of fixed assets | 5,793,000 | 4,216,000 | 3,911,000 | ||||||||
| Foreign currency exchange (gain) loss | 25,786,000 | (3,558,000) | 0 | ||||||||
| Non-cash revaluation of inventory, including LIFO | 3,708,000 | 1,310,000 | 0 | ||||||||
| Management advisory fees | 3,777,000 | 3,583,000 | 590,000 | ||||||||
| Acquisition costs | 7,425,000 | 4,664,000 | 4,241,000 | ||||||||
| Equity-based and other non-cash compensation | 8,799,000 | 7,042,000 | 2,256,000 | ||||||||
| Restructuring, integration and business optimization expenses | 13,174,000 | 16,258,000 | 4,147,000 | ||||||||
| Defined benefit pension plan cost | 2,940,000 | 1,375,000 | 2,903,000 | ||||||||
| Other expense, net | 4,874,000 | 4,788,000 | 4,882,000 | ||||||||
| Operating segments | |||||||||||
| Segment Reporting Information | |||||||||||
| Segment EBITDA | $ 483,715,000 | $ 355,504,000 | $ 117,704,000 | ||||||||
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- Definition Amortization Of Inventory Step Up No definition available.
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- Definition Earnings Before Interest Taxes Depreciation And Amortization No definition available.
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- Definition Equity Method Investment Amortization Expense No definition available.
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- Definition Costs associated with revenues arising from an entity that is an affiliate of the reporting entity by means of direct or indirect ownership. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. No definition available.
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- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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