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Segment Information (Tables) | 12 Months Ended
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Dec. 31, 2020
Segment Information |
Financial information with respect to operating segments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Year Ended December 31, |
​ | ​ | ​ | ​ | 2020 |  | 2019 |  | 2018 |
​ | ​ |  |  | (In thousands) | ​
Operating revenues: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Drilling | ​ | ​ | ​ | $ | 713,057 | ​ | $ | 1,240,936 | ​ | $ | 1,083,227 | ​
Canada Drilling | ​ | ​ | ​ |  | 54,753 | ​ |  | 68,274 | ​ |  | 105,000 | ​
International Drilling | ​ | ​ | ​ |  | 1,131,673 | ​ |  | 1,324,142 | ​ |  | 1,469,038 | ​
Drilling Solutions | ​ | ​ | ​ |  | 149,834 | ​ |  | 252,790 | ​ |  | 250,242 | ​
Rig Technologies | ​ | ​ | ​ |  | 131,555 | ​ |  | 260,226 | ​ |  | 270,988 | ​
Other reconciling items (1) | ​ | ​ | ​ |  | (46,829) | ​ |  | (102,985) | ​ |  | (120,876) | ​
Total | ​ | ​ | ​ | $ | 2,134,043 | ​ | $ | 3,043,383 | ​ | $ | 3,057,619 | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Year Ended December 31, |
​ | ​ | ​ | ​ | 2020 |  | 2019 |  | 2018 |
​ | ​ |  |  | (In thousands) |
Adjusted operating income (loss): (2) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Drilling | ​ | ​ | ​ | $ | (96,176) | ​ | $ | 64,313 | ​ | $ | (21,298) | ​
Canada Drilling | ​ | ​ | ​ |  | (11,766) | ​ |  | (14,483) | ​ |  | (6,166) | ​
International Drilling | ​ | ​ | ​ |  | (56,205) | ​ |  | (8,903) | ​ |  | 74,221 | ​
Drilling Solutions | ​ | ​ | ​ |  | 6,167 | ​ |  | 59,465 | ​ |  | 37,626 | ​
Rig Technologies | ​ | ​ | ​ |  | (13,481) | ​ |  | (11,247) | ​ |  | (25,762) | ​
Total segment adjusted operating income (loss) | ​ | ​ | ​ | $ | (171,461) | ​ | $ | 89,145 | ​ | $ | 58,621 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Year Ended December 31, |
​ | ​ | ​ | ​ | 2020 |  | 2019 |  | 2018 |
​ | ​ |  |  | (In thousands) |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total segment adjusted operating income (loss) (2) | ​ | ​ | ​ | $ | (171,461) | ​ | $ | 89,145 | ​ | $ | 58,621 | ​
Other reconciling items (3) | ​ | ​ | ​ |  | (118,346) | ​ |  | (160,274) | ​ |  | (166,815) | ​
Earnings (losses) from unconsolidated affiliates | ​ | ​ | ​ | ​ | — | ​ | ​ | (5) | ​ | ​ | 1 | ​
Investment income (loss) | ​ | ​ | ​ |  | 1,438 | ​ | ​ | 10,218 | ​ | ​ | (9,499) | ​
Interest expense | ​ | ​ | ​ | ​ | (206,274) | ​ | ​ | (204,311) | ​ | ​ | (227,124) | ​
Gain/(loss) on debt buybacks and exchanges | ​ | ​ | ​ | ​ | 228,274 | ​ | ​ | 11,468 | ​ | ​ | (5,268) | ​
Impairments and other charges | ​ | ​ | ​ | ​ | (410,631) | ​ | ​ | (301,939) | ​ | ​ | (139,178) | ​
Other, net | ​ | ​ | ​ | ​ | (28,567) | ​ | ​ | (33,224) | ​ | ​ | (29,532) | ​
Income (loss) from continuing operations before income taxes | ​ | ​ | ​ | $ | (705,567) | ​ | $ | (588,922) | ​ | $ | (518,794) | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
​ |  | 2020 |  | 2019 |  | 2018 |
​ | ​ | (In thousands) |
Depreciation and amortization | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Drilling | ​ | $ | 398,326 | ​ | $ | 419,680 | ​ | $ | 394,586 | ​
Canada Drilling | ​ |  | 24,784 | ​ |  | 29,766 | ​ |  | 37,172 | ​
International Drilling | ​ |  | 377,599 | ​ |  | 372,883 | ​ |  | 383,227 | ​
Drilling Solutions | ​ |  | 40,074 | ​ |  | 32,289 | ​ |  | 31,037 | ​
Rig Technologies | ​ |  | 15,299 | ​ |  | 12,715 | ​ |  | 16,387 | ​
Other reconciling items (3) | ​ |  | (2,383) | ​ |  | 8,758 | ​ |  | 4,461 | ​
Total | ​ | $ | 853,699 | ​ | $ | 876,091 | ​ | $ | 866,870 | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
​ |  | 2020 |  | 2019 |  | 2018 |
​ | ​ | (In thousands) |
Capital expenditures: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Drilling | ​ | $ | 44,606 | ​ | $ | 184,705 | ​ | $ | 222,338 | ​
Canada Drilling | ​ |  | 2,018 | ​ |  | 5,020 | ​ |  | 12,981 | ​
International Drilling | ​ |  | 127,888 | ​ |  | 209,728 | ​ |  | 172,565 | ​
Drilling Solutions | ​ |  | 12,306 | ​ |  | 23,598 | ​ |  | 30,709 | ​
Rig Technologies | ​ |  | 2,637 | ​ |  | 6,592 | ​ |  | 12,250 | ​
Other reconciling items (3) | ​ |  | 251 | ​ |  | (5,676) | ​ |  | 2,592 | ​
Total | ​ | $ | 189,706 | ​ | $ | 423,967 | ​ | $ | 453,435 | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, |
​ |  | 2020 |  | 2019 |
​ | ​ | (In thousands) |
Total assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Drilling | ​ | $ | 1,871,008 | ​ | $ | 2,369,200 | ​
Canada Drilling | ​ |  | 174,123 | ​ |  | 202,706 | ​
International Drilling | ​ |  | 2,688,912 | ​ |  | 2,979,494 | ​
Drilling Solutions | ​ |  | 100,278 | ​ |  | 218,004 | ​
Rig Technologies | ​ |  | 225,954 | ​ |  | 324,523 | ​
Other reconciling items (3) | ​ |  | 443,153 | ​ |  | 666,731 | ​
Total | ​ | $ | 5,503,428 | ​ | $ | 6,760,658 | ​
(1) | Represents the elimination of inter-segment transactions related to our Rig Technologies operating segment.
​
(2) | Adjusted operating income (loss) represents income (loss) from continuing operations before income taxes, interest expense, earnings (losses) from unconsolidated affiliates, investment income (loss), (gain)/loss on debt buybacks and exchanges, impairments and other charges and other, net. Management evaluates the performance of our operating segments using adjusted operating income (loss), which is a segment performance measure, because it believes that this financial measure reflects our ongoing profitability and performance. In addition, securities analysts and investors use this measure as one of the metrics on which they analyze our performance. A reconciliation to income (loss) from continuing operations before income taxes is provided in the above table.
​
(3) | Represents the elimination of inter-segment transactions and unallocated corporate expenses, assets and capital expenditures.
Schedule of financial information with respect to Nabors' operations by geographic area | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
​ |  | 2020 |  | 2019 |  | 2018 |
​ | ​ | (In thousands) |
Operating revenues | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. | ​ | $ | 841,531 | ​ | $ | 1,554,442 | ​ | $ | 1,347,448 | ​
Outside the U.S. | ​ |  | 1,292,512 | ​ |  | 1,488,941 | ​ |  | 1,710,171 | ​
​ | ​ | $ | 2,134,043 | ​ | $ | 3,043,383 | ​ | $ | 3,057,619 | ​
Property, plant and equipment, net: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. | ​ | $ | 1,917,203 | ​ | $ | 2,470,579 | ​ | $ | 2,892,910 | ​
Outside the U.S. | ​ |  | 2,068,504 | ​ |  | 2,459,970 | ​ |  | 2,574,960 | ​
​ | ​ | $ | 3,985,707 | ​ | $ | 4,930,549 | ​ | $ | 5,467,870 | ​
Goodwill: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. | ​ | $ | — | ​ | $ | 13,430 | ​ | $ | 65,633 | ​
Outside the U.S. | ​ |  | — | ​ |  | 14,950 | ​ |  | 118,281 | ​
​ | ​ | $ | — | ​ | $ | 28,380 | ​ | $ | 183,914 | ​

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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 + Details
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