XML 66 R56.htm IDEA: XBRL DOCUMENT
v3.19.2

Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Operating revenues |  | $ 771,406 | $ 761,920 | $ 1,571,046 | $ 1,496,114 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | 22,260 | 10,884 | 48,954 | 10,827 |
Earnings (losses) from unconsolidated affiliates |  |  | (1) | (5) | 1 |
Investment income (loss) |  | 469 | (3,164) | 10,146 | (2,699) |
Interest expense |  | (51,491) | (60,592) | (103,843) | (121,978) |
Remeasurement of net monetary assets charge |  | 102,570 | 69,620 | 99,903 | 76,664 |
Other, net |  | (7,899) | (7,981) | (28,068) | (15,026) |
Income (loss) from continuing operations before income taxes |  | (181,403) | (171,937) | (254,980) | (291,979) |
ASSETS |  |  |  |  |  |
Total assets (1) | [1] | 7,514,503 |  | 7,514,503 |  | $ 7,853,944
U.S. Drilling |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Operating revenues |  | 323,402 | 264,395 | 643,611 | 505,397 |
Canada Drilling |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Operating revenues |  | 11,389 | 17,442 | 36,704 | 49,329 |
International Drilling |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Operating revenues |  | 326,905 | 377,986 | 664,161 | 746,831 |
Drilling Solutions |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Operating revenues |  | 64,583 | 59,859 | 130,005 | 122,507 |
Rig Technologies |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Operating revenues |  | 72,751 | 81,321 | 144,504 | 145,990 |
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 |  | 22,260 | 10,884 | 48,954 | 10,827 |
Operating segment | U.S. Drilling |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Operating revenues |  | 323,402 | 264,395 | 643,611 | 505,397 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | 20,392 | (13,107) | 45,075 | (32,853) |
ASSETS |  |  |  |  |  |
Total assets (1) |  | 2,897,846 |  | 2,897,846 |  | 2,982,974
Operating segment | Canada Drilling |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Operating revenues |  | 11,389 | 17,442 | 36,704 | 49,329 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | (5,537) | (4,608) | (5,596) | (5,200) |
ASSETS |  |  |  |  |  |
Total assets (1) |  | 223,881 |  | 223,881 |  | 252,817
Operating segment | International Drilling |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Operating revenues |  | 326,905 | 377,986 | 664,161 | 746,831 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | (6,884) | 24,486 | (12,521) | 49,022 |
ASSETS |  |  |  |  |  |
Total assets (1) |  | 3,104,495 |  | 3,104,495 |  | 3,320,347
Operating segment | Drilling Solutions |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Operating revenues |  | 64,583 | 59,859 | 130,005 | 122,507 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | 13,793 | 7,546 | 26,648 | 16,267 |
ASSETS |  |  |  |  |  |
Total assets (1) |  | 251,536 |  | 251,536 |  | 281,078
Operating segment | Rig Technologies |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Operating revenues |  | 72,751 | 81,321 | 144,504 | 145,990 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | 496 | (3,433) | (4,652) | (16,409) |
ASSETS |  |  |  |  |  |
Total assets (1) |  | 422,788 |  | 422,788 |  | 401,044
Other reconciling items (3) |  |  |  |  |  |
Operating revenues and earnings (losses) from unconsolidated affiliates: |  |  |  |  |  |
Operating revenues |  | 27,624 | 39,083 | 47,939 | 73,940 |
Reconciliation of segment adjusted operating income (loss) to net income (loss) from continuing operations before income taxes: |  |  |  |  |  |
Adjusted income (loss) derived from operating activities |  | (42,172) | $ (41,463) | (82,261) | $ (86,440) |
ASSETS |  |  |  |  |  |
Total assets (1) |  | $ 613,957 |  | $ 613,957 |  | $ 615,684
[1] | The condensed consolidated balance sheet as of June 30, 2019 and December 31, 2018 include assets and liabilities of variable interest entities. See Note 3—Joint Ventures for additional information.

X
- Definition The sum of a) the charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value and b) other charges. + References No definition available. + Details
Name: | nbr_AssetImpairmentAndOtherCharges
Namespace Prefix: | nbr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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=119400593&loc=d3e572229-122910 + 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://fasb.org/us-gaap/role/ref/legacyRef -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://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(10)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(8)) -URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(15)) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 + Details
Name: | us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of income (loss) for proportionate share of equity method investee's income (loss). + References Reference 1: 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(12)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(10)) -URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(13)(f)) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570 + 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (210.5-03(11)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 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 210.5-03.7(a),(b)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&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: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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