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Segment Information (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2016 USD ($) segment | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Operating revenues and Earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |  |  |  |  |  |
Total 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
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  | (118,335) | 316,841 | 797,864
Earnings (losses) from unconsolidated affiliates |  |  |  |  |  |  |  |  | (221,914) | (75,081) | (6,301)
Investment income (loss) |  |  |  |  |  |  |  |  | 1,183 | 2,308 | 11,831
Interest expense |  |  |  |  |  |  |  |  | 185,360 | 181,928 | 177,948
Impairments and other charges |  |  |  |  |  |  |  |  | (505,164) | (368,967) | (1,005,110)
Other, net |  |  |  |  |  |  |  |  | 37,509 | (39,172) | 31,386
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
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)
ASSETS |  |  |  |  |  |  |  |  |  |  |
Total assets | 8,187,015 |  |  |  | 9,537,840 |  |  |  | 8,187,015 | 9,537,840 |
Investment in unconsolidated affiliates | 893 |  |  |  | 415,177 |  |  |  | 893 | 415,177 |
Assets held for sale | 76,668 |  |  |  | 75,678 |  |  |  | 76,668 | 75,678 |
Equity in earnings (losses) from unconsolidated affiliates, net |  |  |  |  |  |  |  |  | (221,914) | (84,275) | (7,102)
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 871,631 | 970,459 | 1,145,100
Capital expenditures and acquisitions of businesses |  |  |  |  |  |  |  |  |  |  |
Capital expenditures and acquisitions |  |  |  |  |  |  |  |  | 414,379 | 923,236 | 1,923,779
C&J Energy Services, Ltd. |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  |  |
Earnings (losses) from unconsolidated affiliates |  |  |  |  |  |  |  |  | (221,933) | (81,260) |
Impairments and other charges |  |  |  |  |  |  |  |  | $ (216,200) |  |
Drilling and Rig Services |  |  |  |  |  |  |  |  |  |  |
Financial information with respect to reportable segments |  |  |  |  |  |  |  |  |  |  |
Number of operating segments | segment |  |  |  |  |  |  |  |  | 4 |  |
Operating segment | Reportable subsegments |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  | $ (118,335) | 316,841 | 797,864
Operating segment | Drilling and Rig Services |  |  |  |  |  |  |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  | 2,330,144 | 3,647,942 | 4,812,327
ASSETS |  |  |  |  |  |  |  |  |  |  |
Total assets | 7,461,879 |  |  |  | 8,564,102 |  |  |  | 7,461,879 | 8,564,102 |
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 875,032 | 917,361 | 922,396
Capital expenditures and acquisitions of businesses |  |  |  |  |  |  |  |  |  |  |
Capital expenditures and acquisitions |  |  |  |  |  |  |  |  | 380,941 | 840,673 | 1,781,092
Operating segment | Drilling and Rig Services | Reportable subsegments |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  | (118,335) | 375,643 | 719,990
Operating segment | Drilling and Rig Services | Reportable subsegments | U.S. |  |  |  |  |  |  |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  | 554,072 | 1,256,989 | 2,159,968
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  | (197,710) | 87,051 | 370,173
ASSETS |  |  |  |  |  |  |  |  |  |  |
Total assets | 3,172,767 |  |  |  | 3,654,216 |  |  |  | 3,172,767 | 3,654,216 |
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 388,367 | 425,952 | 465,506
Capital expenditures and acquisitions of businesses |  |  |  |  |  |  |  |  |  |  |
Capital expenditures and acquisitions |  |  |  |  |  |  |  |  | 183,146 | 224,819 | 839,536
Operating segment | Drilling and Rig Services | Reportable subsegments | Canada |  |  |  |  |  |  |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  | 51,472 | 137,494 | 335,192
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  | (36,818) | (7,029) | 52,468
ASSETS |  |  |  |  |  |  |  |  |  |  |
Total assets | 329,620 |  |  |  | 371,151 |  |  |  | 329,620 | 371,151 |
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 42,143 | 46,786 | 55,986
Capital expenditures and acquisitions of businesses |  |  |  |  |  |  |  |  |  |  |
Capital expenditures and acquisitions |  |  |  |  |  |  |  |  | 4,546 | 24,167 | 49,317
Operating segment | Drilling and Rig Services | Reportable subsegments | International |  |  |  |  |  |  |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  | 1,508,890 | 1,862,393 | 1,624,259
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  | 164,677 | 308,262 | 243,975
ASSETS |  |  |  |  |  |  |  |  |  |  |
Total assets | 3,600,057 |  |  |  | 4,108,416 |  |  |  | 3,600,057 | 4,108,416 |
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 411,372 | 411,004 | 367,345
Capital expenditures and acquisitions of businesses |  |  |  |  |  |  |  |  |  |  |
Capital expenditures and acquisitions |  |  |  |  |  |  |  |  | 169,640 | 578,896 | 788,748
Operating segment | Drilling and Rig Services | Reportable subsegments | Rig Services |  |  |  |  |  |  |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  | 215,710 | 391,066 | 692,908
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  | (48,484) | (12,641) | 53,374
ASSETS |  |  |  |  |  |  |  |  |  |  |
Total assets | 359,435 |  |  |  | 430,319 |  |  |  | 359,435 | 430,319 |
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 33,150 | 33,619 | 33,559
Capital expenditures and acquisitions of businesses |  |  |  |  |  |  |  |  |  |  |
Capital expenditures and acquisitions |  |  |  |  |  |  |  |  | 23,609 | 12,791 | 103,491
Operating segment | Completion and Production Services |  |  |  |  |  |  |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  |  | 366,372 | 2,251,437
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 53,735 | 224,422
Capital expenditures and acquisitions of businesses |  |  |  |  |  |  |  |  |  |  |
Capital expenditures and acquisitions |  |  |  |  |  |  |  |  |  | 45,691 | 156,106
Operating segment | Completion and Production Services | Reportable subsegments |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  | (58,802) | 77,874
Operating segment | Completion and Production Services | Reportable subsegments | Completion Services |  |  |  |  |  |  |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  |  | 207,860 | 1,217,899
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  | (55,243) | (15,540)
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 27,133 | 109,917
Operating segment | Completion and Production Services | Reportable subsegments | Production Services |  |  |  |  |  |  |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  |  | 158,512 | 1,033,538
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  | (3,559) | 93,414
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 26,602 | 114,505
Other reconciling items (3) |  |  |  |  |  |  |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |  |  |  |  |  |
Total operating revenues |  |  |  |  |  |  |  |  | (102,305) | (149,877) | (259,567)
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  |  |  |  |  |  |  |  | (130,976) | (159,880) | (193,565)
ASSETS |  |  |  |  |  |  |  |  |  |  |
Total assets | $ 724,243 |  |  |  | $ 558,561 |  |  |  | 724,243 | 558,561 |
Depreciation and amortization: |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | (3,401) | (637) | (1,718)
Capital expenditures and acquisitions of businesses |  |  |  |  |  |  |  |  |  |  |
Capital expenditures and acquisitions |  |  |  |  |  |  |  |  | $ 33,438 | $ 36,872 | $ (13,419)

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- Definition Amount 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 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 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)) -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 -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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