XML 67 R56.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Revenue |  | $ 761,920 | $ 631,355 | $ 1,496,114 | $ 1,193,905 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | 10,884 | (26,187) | 10,827 | (90,515) |
Earnings (losses) from unconsolidated affiliates |  | (1) |  | 1 | 2 |
Investment income (loss) |  | (3,164) | (886) | (2,699) | (165) |
Interest expense |  | (60,592) | (54,688) | (121,978) | (111,206) |
Other, net |  | (77,601) | (10,104) | (91,690) | (23,614) |
Income (loss) from continuing operations before income taxes |  | (171,937) | (134,972) | (291,979) | (308,209) |
ASSETS |  |  |  |  |  |
Total assets (1) | [1] | 8,300,288 |  | 8,300,288 |  | $ 8,401,984
U.S. Drilling |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Revenue |  | 264,395 | 187,344 | 505,397 | 349,278 |
Canada Drilling |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Revenue |  | 17,442 | 17,121 | 49,329 | 44,929 |
International Drilling |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Revenue |  | 377,986 | 380,338 | 746,831 | 718,561 |
Drilling Solutions |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Revenue |  | (59,859) | 31,829 | 122,507 | 59,194 |
Rig Technologies |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Revenue |  | 81,321 | 61,185 | 145,990 | 105,261 |
Operating segment |  |  |  |  |  |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | 10,884 | (26,187) | 10,827 | (90,515) |
Operating segment | U.S. Drilling |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Revenue |  | 264,395 | 187,344 | 505,397 | 349,278 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | (13,107) | (56,079) | (32,853) | (119,261) |
ASSETS |  |  |  |  |  |
Total assets (1) |  | 3,116,162 |  | 3,116,162 |  | 3,203,560
Operating segment | Canada Drilling |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Revenue |  | 17,442 | 17,121 | 49,329 | 44,929 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | (4,608) | (5,014) | (5,200) | (9,025) |
ASSETS |  |  |  |  |  |
Total assets (1) |  | 317,872 |  | 317,872 |  | 347,773
Operating segment | International Drilling |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Revenue |  | 377,986 | 380,338 | 746,831 | 718,561 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | 24,486 | 36,174 | 49,022 | 48,148 |
ASSETS |  |  |  |  |  |
Total assets (1) |  | 3,312,637 |  | 3,312,637 |  | 3,540,829
Operating segment | Drilling Solutions |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Revenue |  | 59,859 | 31,829 | 122,507 | 59,194 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | 7,546 | 3,772 | 16,267 | 2,794 |
ASSETS |  |  |  |  |  |
Total assets (1) |  | 201,445 |  | 201,445 |  | 182,162
Operating segment | Rig Technologies |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Revenue |  | 81,321 | 61,185 | 145,990 | 105,261 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | (3,433) | (5,040) | (16,409) | (13,171) |
ASSETS |  |  |  |  |  |
Total assets (1) |  | 467,519 |  | 467,519 |  | 459,665
Other reconciling items (3) |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Revenue |  | 39,083 | 46,462 | 73,940 | 83,318 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | (41,463) | $ (43,107) | (86,440) | $ (82,711) |
ASSETS |  |  |  |  |  |
Total assets (1) |  | $ 884,653 |  | $ 884,653 |  | $ 667,995
[1] | The condensed consolidated balance sheet as of June 30, 2018 and December 31, 2017 include assets and liabilities of variable interest entities. See Note 3—Joint Ventures for additional information.

X
- References No definition available. + Details
Name: | nbr_OperatingRevenuesAndEarningsLossesFromUnconsolidatedAffiliatesFromContinuingOperationsAbstract
Namespace Prefix: | nbr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AssetsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(10)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(15)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(8)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(12)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(10)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(13)(f)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_IncomeLossFromEquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of the cost of borrowed funds accounted for as interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_InterestExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(a),(b)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_InvestmentIncomeNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of income (expense) related to nonoperating activities, classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_OtherNonoperatingIncomeExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 32 -Paragraph 2A -URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=nbr_USSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=nbr_CanadaSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=nbr_InternationalExcludingCanadaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=nbr_DrillingSolutionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=nbr_RigServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=nbr_EliminationsAndReconcilingItemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |