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Schedule of Earning Before Income Taxes Derived from United States and Non-U.S Operation (Detail) - USD ($) $ in Thousands | 4 Months Ended | 5 Months Ended | 12 Months Ended
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Jul. 31, 2017 | Dec. 31, 2017 | Mar. 31, 2017
Schedule Of Components Of Income Before Income Tax Expense Benefit [Line Items] |  |  |
Earnings before income taxes, Non-U.S |  | $ (5,137) |
Earnings before income taxes, United States |  | (31,550) |
Total pre-tax amounts |  | $ (36,687) |
Predecessor |  |  |
Schedule Of Components Of Income Before Income Tax Expense Benefit [Line Items] |  |  |
Earnings before income taxes, Non-U.S | $ (1,603,788) |  | $ (498,931)
Earnings before income taxes, United States | (44,355) |  | (144,683)
Total pre-tax amounts | $ (1,648,143) |  | $ (643,614)

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- Definition Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items] + References No definition available. + Details
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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. + References Reference 1: 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)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile. + References Reference 1: 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)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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