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Income Taxes - Additional Information (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Dec. 22, 2017 | Jun. 30, 2018 | Dec. 31, 2017 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Income Tax Contingency [Line Items] |  |  |  |  |  |
U.S. federal income tax rate |  | 21.00% |  | 35.00% | 21.00% |
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit) |  |  | $ 19,800,000 |  |  |
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Transition Tax For Accumulated Foreign Earnings, Provisional Income Tax Expense (Benefit) |  |  | 18,000,000 |  |  |
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Provisional Income Tax Expense (Benefit) |  |  | 1,800,000 |  |  |
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Differences of Non-U.S. Subsidiaries Offset By Foreign Tax Credits | $ 7,800,000 |  |  |  |  |
Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Provisional Income Tax Expense (Benefit) Adjustment During the Period |  |  |  |  | $ 0 |
Effective income tax rate |  | (22.80%) |  | 7.70% | (22.70%) | 3.20%
Significant tax benefit related to certain share-based payments |  | 2.20% |  | 34.40% | 2.20% | 24.20%
Insurance receivable (Note 19) and other noncurrent assets |  | $ 122,901,000 | $ 131,790,000 |  | $ 122,901,000 |
Accrued interest and penalties related to uncertain tax positions |  | 2,800,000 |  |  | 2,800,000 |
Other Noncurrent Liabilities |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Unrecognized tax benefits |  | 14,600,000 |  |  | 14,600,000 |
Deferred Tax Asset |  |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |  |
Insurance receivable (Note 19) and other noncurrent assets |  | $ 5,200,000 |  |  | $ 5,200,000 |

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to equity-based compensation costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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