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Segment Information (Details) (USD $) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2012
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations: |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations | $ 1,492,946,000 | $ 1,602,797,000 | $ 3,074,486,000 | $ 3,424,554,000 |
Adjusted income (loss) derived from operating activities from continuing operations: |  |  |  |  |
Adjusted income (loss) derived from operating activities from continuing operations | 90,943,000 | 225,347,000 | 240,531,000 | 540,883,000 |
Joint venture earnings (losses) | 1,360,000 | (134,317,000) | 4,255,000 | (202,986,000) |
Interest expense | (60,271,000) | (63,459,000) | (120,279,000) | (126,113,000) |
Investment income (loss) | 14,821,000 | 5,368,000 | 94,242,000 | 25,620,000 |
Gains (losses) on sales and disposals of long-lived assets and other income (expense), net | (9,312,000) | (160,917,000) | (69,119,000) | (159,077,000) |
Income (loss) from continuing operations before income taxes | 36,181,000 | (134,095,000) | 145,375,000 | 78,317,000 |
Income tax expense (benefit) | 6,172,000 | (36,192,000) | 17,444,000 | 32,852,000 |
Subsidiary preferred stock dividend | 750,000 | 750,000 | 1,500,000 | 1,500,000 |
Income (loss) from continuing operations, net of tax | 29,259,000 | (98,653,000) | 126,431,000 | 43,965,000 |
Income (loss) from discontinued operations, net of tax | (28,004,000) | 24,690,000 | (25,958,000) | 15,895,000 |
Net income (loss) | 1,255,000 | (73,963,000) | 100,473,000 | 59,860,000 |
Less: Net (income) loss attributable to noncontrolling interest | (5,616,000) | 1,174,000 | (5,713,000) | 1,441,000 |
Net income (loss) attributable to Nabors | (4,361,000) | (72,789,000) | 94,760,000 | 61,301,000 |
ASSETS |  |  |  |  |
Total assets | 12,266,903,000 |  | 12,266,903,000 |  | 12,656,022,000
Equity in earnings (losses) from unconsolidated affiliates, net |  |  | 3,891,000 | (202,985,000) |
Assets held-for-sale | 351,263,000 |  | 351,263,000 |  | 383,857,000
Drilling and Rig Services |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations: |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations | 1,035,801,000 | 1,198,016,000 | 2,148,267,000 | 2,518,079,000 |
Adjusted income (loss) derived from operating activities from continuing operations: |  |  |  |  |
Adjusted income (loss) derived from operating activities from continuing operations | 102,145,000 | 189,402,000 | 239,464,000 | 450,265,000 |
ASSETS |  |  |  |  |
Total assets | 9,022,513,000 |  | 9,022,513,000 |  | 9,127,826,000
Equity in earnings (losses) from unconsolidated affiliates, net | 1,200,000 | 6,100,000 | 4,000,000 |  |
Investments in unconsolidated affiliates accounted for using equity method | 62,700,000 |  | 62,700,000 |  | 59,900,000
U.S. |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations: |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations | 467,129,000 | 598,765,000 | 951,902,000 | 1,225,870,000 |
Adjusted income (loss) derived from operating activities from continuing operations: |  |  |  |  |
Adjusted income (loss) derived from operating activities from continuing operations | 69,813,000 | 145,351,000 | 147,408,000 | 312,084,000 |
ASSETS |  |  |  |  |
Total assets | 4,179,649,000 |  | 4,179,649,000 |  | 4,157,470,000
Canada |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations: |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations | 64,789,000 | 66,015,000 | 191,656,000 | 210,750,000 |
Adjusted income (loss) derived from operating activities from continuing operations: |  |  |  |  |
Adjusted income (loss) derived from operating activities from continuing operations | 3,895,000 | (529,000) | 34,413,000 | 42,617,000 |
ASSETS |  |  |  |  |
Total assets | 631,078,000 |  | 631,078,000 |  | 699,699,000
International |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations: |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations | 351,421,000 | 304,622,000 | 672,937,000 | 611,087,000 |
Adjusted income (loss) derived from operating activities from continuing operations: |  |  |  |  |
Adjusted income (loss) derived from operating activities from continuing operations | 32,481,000 | 16,401,000 | 53,950,000 | 37,539,000 |
ASSETS |  |  |  |  |
Total assets | 3,581,505,000 |  | 3,581,505,000 |  | 3,626,307,000
Rig Services |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations: |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations | 152,462,000 | 228,614,000 | 331,772,000 | 470,372,000 |
Adjusted income (loss) derived from operating activities from continuing operations: |  |  |  |  |
Adjusted income (loss) derived from operating activities from continuing operations | (4,044,000) | 28,179,000 | 3,693,000 | 58,025,000 |
Income (loss) from discontinued operations, net of tax | 6,216,000 | (7,074,000) | 8,215,000 | (8,067,000) |
ASSETS |  |  |  |  |
Total assets | 630,281,000 |  | 630,281,000 |  | 644,350,000
Assets held-for-sale |  |  |  |  | 6,232,000
Completion and Production Services |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations: |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations | 498,618,000 | 628,043,000 | 1,012,327,000 | 1,283,338,000 |
Adjusted income (loss) derived from operating activities from continuing operations: |  |  |  |  |
Adjusted income (loss) derived from operating activities from continuing operations | 30,341,000 | 71,541,000 | 74,111,000 | 164,430,000 |
ASSETS |  |  |  |  |
Total assets | 2,252,618,000 |  | 2,252,618,000 |  | 2,301,802,000
Equity in earnings (losses) from unconsolidated affiliates, net | 200,000 |  | 300,000 |  |
Investments in unconsolidated affiliates accounted for using equity method | 5,700,000 |  | 5,700,000 |  | 1,800,000
Production Services |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations: |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations | 244,602,000 | 240,380,000 | 496,173,000 | 497,639,000 |
Adjusted income (loss) derived from operating activities from continuing operations: |  |  |  |  |
Adjusted income (loss) derived from operating activities from continuing operations | 23,471,000 | 25,397,000 | 49,485,000 | 53,426,000 |
Completion Services |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations: |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations | 254,016,000 | 387,663,000 | 516,154,000 | 785,699,000 |
Adjusted income (loss) derived from operating activities from continuing operations: |  |  |  |  |
Adjusted income (loss) derived from operating activities from continuing operations | 6,870,000 | 46,144,000 | 24,626,000 | 111,004,000 |
Oil and Gas |  |  |  |  |
Adjusted income (loss) derived from operating activities from continuing operations: |  |  |  |  |
Joint venture earnings (losses) |  | (140,434,000) |  | (202,996,000) |
Income (loss) from discontinued operations, net of tax | (34,220,000) | 31,764,000 | (34,173,000) | 23,962,000 |
ASSETS |  |  |  |  |
Assets held-for-sale | 351,263,000 |  | 351,263,000 |  | 377,625,000
Other reconciling items |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations: |  |  |  |  |
Operating revenues and Earnings (losses) from unconsolidated affiliates from continuing operations | (41,473,000) | (223,262,000) | (86,108,000) | (376,863,000) |
Adjusted income (loss) derived from operating activities from continuing operations: |  |  |  |  |
Adjusted income (loss) derived from operating activities from continuing operations | (41,543,000) | (35,596,000) | (73,044,000) | (73,812,000) |
ASSETS |  |  |  |  |
Total assets | $ 991,772,000 |  | $ 991,772,000 |  | $ 1,226,394,000

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