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Condensed Consolidating Financial Information - Statements of Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Revenues and other income: |  |  |  |  |  |  |  |  |  |  |
Operating revenues | $ 538,948 | $ 519,729 | $ 571,591 | $ 597,571 | $ 738,872 | $ 847,553 | $ 863,305 | $ 1,414,707 | $ 2,227,839 | $ 3,864,437 | $ 6,804,197
Earnings (losses) from unconsolidated affiliates |  |  |  |  |  |  |  |  | (221,914) | (75,081) | (6,301)
Investment income (loss) |  |  |  |  |  |  |  |  | 1,183 | 2,308 | 11,831
Total revenues and other income |  |  |  |  |  |  |  |  | 2,007,108 | 3,791,664 | 6,809,727
Costs and other deductions: |  |  |  |  |  |  |  |  |  |  |
Direct costs |  |  |  |  |  |  |  |  | 1,344,298 | 2,371,436 | 4,505,064
General and administrative expenses |  |  |  |  |  |  |  |  | 227,639 | 324,328 | 500,036
Research and Engineering |  |  |  |  |  |  |  |  | 33,582 | 41,253 | 49,698
Depreciation and amortization |  |  |  |  |  |  |  |  | 871,631 | 970,459 | 1,145,100
Interest expense |  |  |  |  |  |  |  |  | 185,360 | 181,928 | 177,948
Impairments and other charges |  |  |  |  |  |  |  |  | 236,745 | 129,341 | 650,199
Impairment and other charges |  |  |  |  |  |  |  |  | 505,164 | 368,967 | 1,005,110
Other, net |  |  |  |  |  |  |  |  | 37,509 | (39,172) | 31,386
Total costs and other deductions |  |  |  |  |  |  |  |  | 3,205,183 | 4,219,199 | 7,414,342
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (1,198,075) | (427,535) | (604,615)
Income tax expense (benefit) |  |  |  |  |  |  |  |  | (186,831) | (98,038) | 62,666
Subsidiary preferred stock dividend |  |  |  |  |  |  |  |  |  |  | (1,984)
Income (loss) from continuing operations, net of tax | (330,196) | (97,839) | (186,565) | (396,644) | (161,090) | (250,879) | (41,890) | 124,362 | (1,011,244) | (329,497) | (669,265)
Income (loss) from discontinued operations, net of tax | (4,266) | (12,187) | (984) | (926) | (1,730) | (45,275) | 5,025 | (817) | (18,363) | (42,797) | 21
Net income (loss) | (334,462) | (110,026) | (187,549) | (397,570) | (162,820) | (296,154) | (36,865) | 123,545 | (1,029,607) | (372,294) | (669,244)
Less: Net (income) loss attributable to noncontrolling interest | (1,125) | (1,185) | 2,899 | (724) | (834) | 320 | 44 | 89 | (135) | (381) | (1,415)
Net income (loss) attributable to Nabors | $ (335,587) | $ (111,211) | $ (184,650) | $ (398,294) | $ (163,654) | $ (295,834) | $ (36,821) | $ 123,634 | (1,029,742) | (372,675) | (670,659)
Consolidating Adjustments |  |  |  |  |  |  |  |  |  |  |
Revenues and other income: |  |  |  |  |  |  |  |  |  |  |
Earnings (losses) from consolidated affiliates |  |  |  |  |  |  |  |  | 1,609,049 | 557,930 | 1,024,485
Investment income (loss) |  |  |  |  |  |  |  |  | (11,923) | (9,942) | (6,303)
Intercompany interest income |  |  |  |  |  |  |  |  | (569) | (6,452) | (2,751)
Total revenues and other income |  |  |  |  |  |  |  |  | 1,596,557 | 541,536 | 1,015,431
Costs and other deductions: |  |  |  |  |  |  |  |  |  |  |
General and administrative expenses |  |  |  |  |  |  |  |  | (856) | (560) | (587)
Other, net |  |  |  |  |  |  |  |  | 856 | 560 | 587
Intercompany interest expense |  |  |  |  |  |  |  |  | (569) | (6,452) | (2,751)
Total costs and other deductions |  |  |  |  |  |  |  |  | (569) | (6,452) | (2,751)
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 1,597,126 | 547,988 | 1,018,182
Income (loss) from continuing operations, net of tax |  |  |  |  |  |  |  |  | 1,597,126 | 547,988 | 1,018,182
Net income (loss) |  |  |  |  |  |  |  |  | 1,597,126 | 547,988 | 1,018,182
Net income (loss) attributable to Nabors |  |  |  |  |  |  |  |  | 1,597,126 | 547,988 | 1,018,182
Parent Company | Reportable Legal Entities |  |  |  |  |  |  |  |  |  |  |
Revenues and other income: |  |  |  |  |  |  |  |  |  |  |
Earnings (losses) from consolidated affiliates |  |  |  |  |  |  |  |  | (1,017,338) | (351,407) | (653,124)
Investment income (loss) |  |  |  |  |  |  |  |  | 2 |  |
Total revenues and other income |  |  |  |  |  |  |  |  | (1,017,336) | (351,407) | (653,124)
Costs and other deductions: |  |  |  |  |  |  |  |  |  |  |
General and administrative expenses |  |  |  |  |  |  |  |  | 10,559 | 8,768 | 9,531
Interest expense |  |  |  |  |  |  |  |  |  | (1) |
Impairment and other charges |  |  |  |  |  |  |  |  | 1,366 |  |
Other, net |  |  |  |  |  |  |  |  | 482 | 12,469 | 7,668
Intercompany interest expense |  |  |  |  |  |  |  |  | (1) | 32 | 336
Total costs and other deductions |  |  |  |  |  |  |  |  | 12,406 | 21,268 | 17,535
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (1,029,742) | (372,675) | (670,659)
Income (loss) from continuing operations, net of tax |  |  |  |  |  |  |  |  | (1,029,742) | (372,675) | (670,659)
Net income (loss) |  |  |  |  |  |  |  |  | (1,029,742) | (372,675) | (670,659)
Net income (loss) attributable to Nabors |  |  |  |  |  |  |  |  | (1,029,742) | (372,675) | (670,659)
Guarantor Subsidiaries | Reportable Legal Entities |  |  |  |  |  |  |  |  |  |  |
Revenues and other income: |  |  |  |  |  |  |  |  |  |  |
Earnings (losses) from consolidated affiliates |  |  |  |  |  |  |  |  | (231,960) | (41,826) | (120,996)
Investment income (loss) |  |  |  |  |  |  |  |  | 132 | 584 | 1,869
Intercompany interest income |  |  |  |  |  |  |  |  | 569 | 6,452 | 2,415
Total revenues and other income |  |  |  |  |  |  |  |  | (231,259) | (34,790) | (116,712)
Costs and other deductions: |  |  |  |  |  |  |  |  |  |  |
General and administrative expenses |  |  |  |  |  |  |  |  | 603 | 1 | 8,001
Depreciation and amortization |  |  |  |  |  |  |  |  | 124 | 705 | 3,608
Interest expense |  |  |  |  |  |  |  |  | 204,010 | 201,364 | 198,246
Other, net |  |  |  |  |  |  |  |  | (14) |  | (223)
Total costs and other deductions |  |  |  |  |  |  |  |  | 204,723 | 202,070 | 209,632
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (435,982) | (236,860) | (326,344)
Income tax expense (benefit) |  |  |  |  |  |  |  |  | (76,231) | (72,163) | (75,979)
Income (loss) from continuing operations, net of tax |  |  |  |  |  |  |  |  | (359,751) | (164,697) | (250,365)
Net income (loss) |  |  |  |  |  |  |  |  | (359,751) | (164,697) | (250,365)
Net income (loss) attributable to Nabors |  |  |  |  |  |  |  |  | (359,751) | (164,697) | (250,365)
Other Subsidiaries (Non-Guarantors) | Reportable Legal Entities |  |  |  |  |  |  |  |  |  |  |
Revenues and other income: |  |  |  |  |  |  |  |  |  |  |
Operating revenues |  |  |  |  |  |  |  |  | 2,227,839 | 3,864,437 | 6,804,197
Earnings (losses) from unconsolidated affiliates |  |  |  |  |  |  |  |  | (221,914) | (75,081) | (6,301)
Earnings (losses) from consolidated affiliates |  |  |  |  |  |  |  |  | (359,751) | (164,697) | (250,365)
Investment income (loss) |  |  |  |  |  |  |  |  | 12,972 | 11,666 | 16,265
Intercompany interest income |  |  |  |  |  |  |  |  |  |  | 336
Total revenues and other income |  |  |  |  |  |  |  |  | 1,659,146 | 3,636,325 | 6,564,132
Costs and other deductions: |  |  |  |  |  |  |  |  |  |  |
Direct costs |  |  |  |  |  |  |  |  | 1,344,298 | 2,371,436 | 4,505,064
General and administrative expenses |  |  |  |  |  |  |  |  | 217,333 | 316,119 | 483,091
Research and Engineering |  |  |  |  |  |  |  |  | 33,582 | 41,253 | 49,698
Depreciation and amortization |  |  |  |  |  |  |  |  | 871,507 | 969,754 | 1,141,492
Interest expense |  |  |  |  |  |  |  |  | (18,650) | (19,435) | (20,298)
Impairment and other charges |  |  |  |  |  |  |  |  | 503,798 | 368,967 | 1,005,110
Other, net |  |  |  |  |  |  |  |  | 36,185 | (52,201) | 23,354
Intercompany interest expense |  |  |  |  |  |  |  |  | 570 | 6,420 | 2,415
Total costs and other deductions |  |  |  |  |  |  |  |  | 2,988,623 | 4,002,313 | 7,189,926
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (1,329,477) | (365,988) | (625,794)
Income tax expense (benefit) |  |  |  |  |  |  |  |  | (110,600) | (25,875) | 138,645
Subsidiary preferred stock dividend |  |  |  |  |  |  |  |  |  |  | (1,984)
Income (loss) from continuing operations, net of tax |  |  |  |  |  |  |  |  | (1,218,877) | (340,113) | (766,423)
Income (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  | (18,363) | (42,797) | 21
Net income (loss) |  |  |  |  |  |  |  |  | (1,237,240) | (382,910) | (766,402)
Less: Net (income) loss attributable to noncontrolling interest |  |  |  |  |  |  |  |  | (135) | (381) | (1,415)
Net income (loss) attributable to Nabors |  |  |  |  |  |  |  |  | $ (1,237,375) | $ (383,291) | $ (767,817)

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