$NBR
NABORS INDUSTRIES LTD Stock $nbr

$nbr Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000155837020001335 Filed on February 25, 2020

Income Statement

Concept	2018 Q4	2018 Q3	2018 Q2
Revenue	$782.1M	$779.4M	$761.9M
YoY Change	10.42%	17.72%	20.67%
Cost Of Revenue	$510.4M	$497.2M	$494.0M
YoY Change	8.23%	12.67%	18.32%
Gross Profit	$271.7M	$282.2M	$267.9M
YoY Change	14.84%	27.82%	25.33%
Gross Profit Margin	34.74%	36.21%	35.17%
Selling, General & Admin	$56.60M	$66.80M	$67.80M
YoY Change	-4.23%	2.77%	6.44%
% of Gross Profit	20.83%	23.67%	25.3%
Research & Development	$13.40M	$14.46M	$12.44M
YoY Change	-10.67%	11.22%	10.08%
% of Gross Profit	4.93%	5.12%	4.64%
Depreciation & Amortization	$226.7M	$209.0M	$218.8M
YoY Change	5.64%	-4.0%	4.84%
% of Gross Profit	83.44%	74.05%	81.66%
Operating Expenses	$315.2M	$14.46M	$12.44M
YoY Change	12.93%	-95.08%	-95.66%
Operating Profit	-$43.50M	$31.73M	$10.88M
YoY Change	2.35%	-143.58%	-115.01%
Interest Expense	-$55.50M	$51.42M	$60.59M
YoY Change	-0.89%	-196.1%	-205.93%
% of Operating Profit		162.05%	556.71%
Other Income/Expense, Net		-$9.137M	-$7.981M
YoY Change
Pretax Income	-$143.6M	-$83.22M	-$171.9M
YoY Change	4.13%	-37.89%	27.36%
Income Tax	$22.00M	$10.49M	$23.28M
% Of Pretax Income
Net Earnings	-$183.4M	-$114.6M	-$198.8M
YoY Change	57.71%	-22.84%	49.44%
Net Earnings / Revenue	-23.45%	-14.7%	-26.09%
Basic Earnings Per Share	-$0.55	-$0.35	-$0.61
Diluted Earnings Per Share	-$0.55	-$0.35	-$0.61
COMMON SHARES
Basic Shares Outstanding		350.2M	328.4M
Diluted Shares Outstanding		350.2M	328.4M

Balance Sheet

Concept	2018 Q4	2018 Q3	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$482.0M	$389.0M	$637.0M
YoY Change	32.05%	76.82%	174.57%
Cash & Equivalents	$447.8M	$351.0M	$597.4M
Short-Term Investments	$34.00M	$41.00M	$43.00M
Other Short-Term Assets	$177.6M	$209.0M	$193.0M
YoY Change	-18.15%	-2.34%	-23.11%
Inventory	$165.6M	$167.0M	$173.0M
Prepaid Expenses
Receivables	$756.3M	$775.0M	$780.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$1.594B	$1.539B	$1.782B
YoY Change	10.13%	30.98%	51.79%
LONG-TERM ASSETS
Property, Plant & Equipment	$5.468B	$5.609B	$5.710B
YoY Change	-10.5%	-7.32%	-7.03%
Goodwill	$183.9M
YoY Change	6.17%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$263.5M	$640.0M	$635.0M
YoY Change	-60.79%	-7.11%	4.27%
Total Long-Term Assets	$6.260B	$6.422B	$6.518B
YoY Change	-9.99%	-7.12%	-5.78%
TOTAL ASSETS
Total Short-Term Assets	$1.594B	$1.539B	$1.782B
Total Long-Term Assets	$6.260B	$6.422B	$6.518B
Total Assets	$7.854B	$7.961B	$8.300B
YoY Change	-6.52%	-1.58%	2.57%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$392.8M	$332.0M	$379.0M
YoY Change	8.22%	4.73%	45.21%
Accrued Expenses	$417.9M	$176.0M	$247.0M
YoY Change	53.08%	-12.44%	-0.8%
Deferred Revenue	$116.7M
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$1.000M	$0.00	$0.00
YoY Change
Total Short-Term Liabilities	$832.1M	$752.0M	$874.0M
YoY Change	-9.46%	-9.51%	-0.34%
LONG-TERM LIABILITIES
Long-Term Debt	$3.586B	$3.737B	$3.819B
YoY Change	-10.98%	-5.61%	2.11%
Other Long-Term Liabilities	$274.5M	$273.0M	$290.0M
YoY Change	-9.11%	-22.44%	-25.83%
Total Long-Term Liabilities	$3.860B	$4.010B	$4.109B
YoY Change	-10.85%	-6.98%	-0.53%
TOTAL LIABILITIES
Total Short-Term Liabilities	$832.1M	$752.0M	$874.0M
Total Long-Term Liabilities	$3.860B	$4.010B	$4.109B
Total Liabilities	$4.699B	$5.029B	$5.003B
YoY Change	-10.66%	-3.05%	-0.79%
SHAREHOLDERS EQUITY
Retained Earnings	$650.8M
YoY Change
Common Stock	$3.393B
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	$1.314B
YoY Change
Treasury Stock Shares	$52.80M
Shareholders Equity	$2.701B	$2.931B	$3.063B
YoY Change
Total Liabilities & Shareholders Equity	$7.854B	$7.961B	$8.300B
YoY Change	-6.52%	-1.58%	2.57%

Cashflow Statement

Concept	2018 Q4	2018 Q3	2018 Q2
OPERATING ACTIVITIES
Net Income	-$183.4M	-$114.6M	-$198.8M
YoY Change	57.71%	-22.84%	49.44%
Depreciation, Depletion And Amortization	$226.7M	$209.0M	$218.8M
YoY Change	5.64%	-4.0%	4.84%
Cash From Operating Activities	$248.9M	-$500.0K	$159.1M
YoY Change	151.67%	-98.12%	228.04%
INVESTING ACTIVITIES
Capital Expenditures	-$119.9M	-$129.5M	-$115.5M
YoY Change	-4.54%	-2.7%	-12.76%
Acquisitions
YoY Change
Other Investing Activities	$2.900M	$9.800M	$75.70M
YoY Change	-96.75%	-124.94%	222.13%
Cash From Investing Activities	-$117.1M	-$119.7M	-$39.80M
YoY Change	220.82%	-30.57%	-63.42%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-31.80M	-124.5M	109.9M
YoY Change	-135.97%	-164.37%	91.13%
NET CHANGE
Cash From Operating Activities	248.9M	-500.0K	159.1M
Cash From Investing Activities	-117.1M	-119.7M	-39.80M
Cash From Financing Activities	-31.80M	-124.5M	109.9M
Net Change In Cash	100.0M	-244.7M	229.2M
YoY Change	-33.69%	4269.64%	-8285.71%
FREE CASH FLOW
Cash From Operating Activities	$248.9M	-$500.0K	$159.1M
Capital Expenditures	-$119.9M	-$129.5M	-$115.5M
Free Cash Flow	$368.8M	$129.0M	$274.6M
YoY Change	64.28%	21.13%	51.8%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
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CY2019Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	us-gaap:OperatingLeaseLiabilityCurrent
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	us-gaap:OperatingLeaseLiabilityNoncurrent
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0001163739
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-32657
CY2019	dei	Entity Registrant Name EntityRegistrantName	NABORS INDUSTRIES LTD
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	D0
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	Crown House
CY2019	dei	Entity Address Address Line2 EntityAddressAddressLine2	Second Floor
CY2019	dei	Entity Address Address Line3 EntityAddressAddressLine3	4 Par-la-Ville Road
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Hamilton
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	HM08
CY2019	dei	Entity Address Country EntityAddressCountry	BM
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	98-0363970
CY2019	dei	City Area Code CityAreaCode	441
CY2019	dei	Local Phone Number LocalPhoneNumber	292-1510
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	1007634972
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CY2018Q4	us-gaap	Short Term Investments ShortTermInvestments	34036000
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CY2019Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	2530000
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CY2019Q4	us-gaap	Assets Current AssetsCurrent	1248666000
CY2018Q4	us-gaap	Assets Current AssetsCurrent	1593563000
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CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-546811000
CY2019	nbr	Income Loss From Continuing Operation Available To Common Stockholders IncomeLossFromContinuingOperationAvailableToCommonStockholders	-720117000
CY2018	nbr	Income Loss From Continuing Operation Available To Common Stockholders IncomeLossFromContinuingOperationAvailableToCommonStockholders	-638590000
CY2017	nbr	Income Loss From Continuing Operation Available To Common Stockholders IncomeLossFromContinuingOperationAvailableToCommonStockholders	-503292000
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-12000
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-14663000
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-43519000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-720129000
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-653253000
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-546811000
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-2.11
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-1.95
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-1.75
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.04
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.15
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.11
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.99
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.90
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-2.11
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-1.95
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-1.75
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.04
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.15
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.11
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.99
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.90
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	351617000
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	334397000
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	280653000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	351617000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	334397000
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	280653000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-702885000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-640948000
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-546811000
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	16943000
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	-31962000
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	28372000
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-6061000
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-970000
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-5091000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-217000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-216000
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	275000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	567000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	567000
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	613000
CY2018	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax	9144000
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	17727000
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-40323000
CY2017	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	23619000
CY2019	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	190000
CY2018	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	187000
CY2017	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	315000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	17537000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-40510000
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	23304000
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-685348000
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-681458000
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-523507000
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	22375000
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	28222000
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6178000
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	55000
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-251000
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	282000
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	22430000
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	27971000
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	6460000
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-662918000
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-653487000
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-517047000
CY2019	us-gaap	Profit Loss ProfitLoss	-680510000
CY2018	us-gaap	Profit Loss ProfitLoss	-612726000
CY2017	us-gaap	Profit Loss ProfitLoss	-540633000
CY2019	nbr	Depreciation And Amortization Including Discontinued Operations DepreciationAndAmortizationIncludingDiscontinuedOperations	876103000
CY2018	nbr	Depreciation And Amortization Including Discontinued Operations DepreciationAndAmortizationIncludingDiscontinuedOperations	868509000
CY2017	nbr	Depreciation And Amortization Including Discontinued Operations DepreciationAndAmortizationIncludingDiscontinuedOperations	845439000
CY2019	nbr	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	35894000
CY2018	nbr	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	71579000
CY2017	nbr	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	9096000
CY2019	nbr	Impairments And Other Charges ImpairmentsAndOtherCharges	213404000
CY2018	nbr	Impairments And Other Charges ImpairmentsAndOtherCharges	62578000
CY2017	nbr	Impairments And Other Charges ImpairmentsAndOtherCharges	42188000
CY2019	nbr	Amortization Of Debt Discount And Deferred Financing Costs AmortizationOfDebtDiscountAndDeferredFinancingCosts	30931000
CY2018	nbr	Amortization Of Debt Discount And Deferred Financing Costs AmortizationOfDebtDiscountAndDeferredFinancingCosts	32213000
CY2017	nbr	Amortization Of Debt Discount And Deferred Financing Costs AmortizationOfDebtDiscountAndDeferredFinancingCosts	27583000
CY2019	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	11468000
CY2018	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	-5268000
CY2017	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	-16005000
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-40346000
CY2018	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-95741000
CY2017	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-19064000
CY2019	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	1257000
CY2018	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-14195000
CY2017	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-972000
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	20626000
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1285000
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3083000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	24660000
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	26396000
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	31896000
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-20876000
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-4235000
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-1604000
CY2019	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-22375000
CY2018	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-28222000
CY2017	us-gaap	Income Loss From Continuing Operations Attributable To Noncontrolling Entity IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity	-6178000
CY2019	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-5000
CY2018	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-164000
CY2017	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	7000
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-667000
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-720000
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-636000
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-276685000
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	66486000
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	168436000
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	18695000
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	13981000
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	17444000
CY2019	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-5157000
CY2018	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-31770000
CY2017	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-16518000
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-13106000
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-11717000
CY2017	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-28772000
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-142857000
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-76561000
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	79204000
CY2019	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-4857000
CY2018	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-41939000
CY2017	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	14811000
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	8117000
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-60682000
CY2017	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-341417000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	684558000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	325773000
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	62756000
CY2019	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	4323000
CY2018	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	676000
CY2017	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	6722000
CY2019	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	18849000
CY2018	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	4287000
CY2017	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	13069000
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2929000
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	20859000
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-12319000
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	427741000
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	458938000
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	574467000
CY2019	nbr	Proceeds From Sale Of Productive Assets And Proceeds From Insurance Settlement ProceedsFromSaleOfProductiveAssetsAndProceedsFromInsuranceSettlement	60288000
CY2018	nbr	Proceeds From Sale Of Productive Assets And Proceeds From Insurance Settlement ProceedsFromSaleOfProductiveAssetsAndProceedsFromInsuranceSettlement	109098000
CY2017	nbr	Proceeds From Sale Of Productive Assets And Proceeds From Insurance Settlement ProceedsFromSaleOfProductiveAssetsAndProceedsFromInsuranceSettlement	57933000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-355856000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-367088000
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-497868000
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	800000000
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	411200000
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	455360000
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	878278000
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	381814000
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1767000
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	21277000
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	11043000
CY2019	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	1050000000
CY2018	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	1135000000
CY2017	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	725000000
CY2019	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-865000000
CY2018	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-1475000000
CY2017	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-215000000
CY2018	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	-40000000
CY2017	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	40000000
CY2017	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	159952000
CY2017	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	40250000
CY2017	us-gaap	Repayments Of Debt RepaymentsOfDebt	162500000
CY2019	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	561000
CY2018	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	380000
CY2017	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	543000
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	301404000
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	8300000
CY2018	us-gaap	Proceeds From Issuance Of Convertible Preferred Stock ProceedsFromIssuanceOfConvertiblePreferredStock	277927000
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	18071000
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	49583000
CY2018	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	87098000
CY2017	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	68503000
CY2018	nbr	Proceeds From Redeemable Noncontrolling Interest Contribution ProceedsFromRedeemableNoncontrollingInterestContribution	156935000
CY2017	nbr	Proceeds From Redeemable Noncontrolling Interest Contribution ProceedsFromRedeemableNoncontrollingInterestContribution	61123000
CY2017	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	20000000
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	4552000
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	5452000
CY2017	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	7272000
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-4750000
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-8912000
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-8399000
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-331573000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	155629000
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	512180000
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-6171000
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-5263000
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-29000
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-9042000
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	109051000
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	77039000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	451080000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	342029000
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	264990000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	442038000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	451080000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	342029000
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	447766000
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	336997000
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	264093000
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	3314000
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	5032000
CY2016Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	897000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	451080000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	342029000
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	264990000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	435990000
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	447766000
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	336997000
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	6048000
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	3314000
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	5032000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	442038000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	451080000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	342029000
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	3254795000
CY2017	us-gaap	Profit Loss ProfitLoss	-540633000
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.24
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	68612000
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	18071000
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	23586000
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	-10735000
CY2017	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities Net Of Adjustments StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments	116195000
CY2017	nbr	Purchase Of Capped Call Hedge PurchaseOfCappedCallHedge	40250000
CY2017	nbr	Cumulative Effect Of Prospective Application Of New Accounting Principle Net Of Tax1 CumulativeEffectOfProspectiveApplicationOfNewAccountingPrincipleNetOfTax1	7093000
CY2017	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	31896000
CY2017	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	178993000
CY2017	nbr	Noncontrolling Interest Contribution NoncontrollingInterestContribution	13018000
CY2017	us-gaap	Stockholders Equity Other StockholdersEquityOther	8502000
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2938773000
CY2018	us-gaap	Profit Loss ProfitLoss	-612726000
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.24
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	82973000
CY2018	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	2.14
CY2018	us-gaap	Dividends Preferred Stock DividendsPreferredStock	12305000
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	301403000
CY2018	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	277927000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-40761000
CY2018	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	26396000
CY2018	nbr	Noncontrolling Interest Contribution NoncontrollingInterestContribution	-5452000
CY2018	us-gaap	Noncontrolling Interest In Net Income Loss Other Noncontrolling Interests Redeemable NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsRedeemable	11098000
CY2018	us-gaap	Stockholders Equity Other StockholdersEquityOther	3870000
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2750326000
CY2019	us-gaap	Profit Loss ProfitLoss	-680510000
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.04
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	14953000
CY2019	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	2.14
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	17245000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	17592000
CY2019	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	24659000
CY2019	nbr	Noncontrolling Interest Contribution NoncontrollingInterestContribution	-4552000
CY2019	us-gaap	Noncontrolling Interest In Net Income Loss Other Noncontrolling Interests Redeemable NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsRedeemable	20534000
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	4618000
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2050165000
CY2019	us-gaap	Nature Of Operations NatureOfOperations	<p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><b style="font-weight:bold;">Note 1 Nature of Operations</b></p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-weight:bold;visibility:hidden;"></span></p><p style="font-family:'Times New Roman';font-size:10pt;text-indent:36pt;margin:0pt;">Unless the context requires otherwise, references in this annual report to “we,” “us,” “our,” “the Company,” or “Nabors” mean Nabors Industries Ltd., together with our subsidiaries where the context requires. References in this annual report to “Nabors Delaware” mean Nabors Industries, Inc., a wholly owned subsidiary of Nabors.</p><p style="font-family:'Times New Roman';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman';font-size:10pt;text-indent:36pt;margin:0pt;">Our business is comprised of our global land-based and offshore drilling rig operations and other rig related services and technologies. These services include tubular running services, wellbore placement solutions, directional drilling, measurement-while-drilling (“MWD”), logging-while-drilling (“LWD”) systems and services, equipment manufacturing, rig instrumentation and optimization software.</p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p><p style="font-family:'Times New Roman';font-size:10pt;text-indent:36pt;margin:0pt;">The consolidated financial statements and related footnotes are presented in accordance with U.S. GAAP.</p>
CY2019Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	35000000.0
CY2018Q4	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	27900000
CY2019Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	130414000
CY2018Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	116840000
CY2019Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	5498000
CY2018Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	20329000
CY2019Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	40429000
CY2018Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	28418000
CY2019Q4	us-gaap	Inventory Net InventoryNet	176341000
CY2018Q4	us-gaap	Inventory Net InventoryNet	165587000
CY2019	nbr	Percentage Of Growth Rate Used To Calculate Terminal Value Of Each Reporting Unit PercentageOfGrowthRateUsedToCalculateTerminalValueOfEachReportingUnit	0.02
CY2017Q4	us-gaap	Goodwill Goodwill	173226000
CY2018	nbr	Goodwill Acquisitions And Purchase Price Adjustments GoodwillAcquisitionsAndPurchasePriceAdjustments	11436000
CY2018	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-748000
CY2018Q4	us-gaap	Goodwill Goodwill	183914000
CY2018Q4	us-gaap	Goodwill Goodwill	183914000
CY2019	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	155973000
CY2019	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	439000
CY2019Q4	us-gaap	Goodwill Goodwill	28380000
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	156000000.0
CY2019Q4	nbr	Goodwill Expected To Be Deductible For Tax Purposes GoodwillExpectedToBeDeductibleForTaxPurposes	8200000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2017	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit	138600000
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	156000000.0
CY2019	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	47700000
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">Use of Estimates</span></p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;font-style:italic;font-weight:bold;visibility:hidden;"></span></p><p style="font-family:'Times New Roman';font-size:10pt;text-indent:36pt;margin:0pt;">The preparation of financial statements in conformity with U.S. GAAP requires management to make certain estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities, the disclosures of contingent assets and liabilities at the balance sheet date and the amounts of revenues and expenses recognized during the reporting period. Actual results could differ from such estimates. Areas where critical accounting estimates are made by management include:</p><p style="font-family:'Times New Roman';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="visibility:hidden;"></span></p><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"/><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">●</td><td style="padding:0pt;"><span style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">depreciation of property, plant and equipment;</span></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 54pt;"><span style="margin-left:0pt;visibility:hidden;"></span></p><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"/><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">●</td><td style="padding:0pt;"><span style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">impairment of long-lived assets;</span></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 54pt;"><span style="margin-left:0pt;visibility:hidden;"></span></p><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"/><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">●</td><td style="padding:0pt;"><span style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">impairment of goodwill and intangible assets;</span></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"/><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">●</td><td style="padding:0pt;"><span style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">income taxes;</span></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 54pt;"><span style="margin-left:0pt;visibility:hidden;"></span></p><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"/><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">●</td><td style="padding:0pt;"><span style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">litigation and self-insurance reserves; and</span></td></tr></table><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt 0pt 0pt 54pt;"><span style="margin-left:0pt;visibility:hidden;"></span></p><table style="border-collapse:collapse;font-family:'Times New Roman';font-size:10pt;margin-bottom:0pt;margin-top:0pt;table-layout:fixed;width:100%;border:0pt;"><tr><td style="width:36pt;"/><td style="font-family:'Times New Roman';font-size:10pt;vertical-align:text-top;white-space:nowrap;width:18pt;padding:0pt;">●</td><td style="padding:0pt;"><span style="color:#000000;font-family:'Times New Roman';font-size:10pt;font-style:normal;font-weight:normal;text-align:left;">fair value of assets acquired and liabilities assumed.</span></td></tr></table>
CY2019	us-gaap	Description Of New Accounting Pronouncements Not Yet Adopted DescriptionOfNewAccountingPronouncementsNotYetAdopted	<p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-style:italic;font-weight:bold;">Recent Accounting Pronouncements Not Yet Adopted</span></p><p style="font-family:'Times New Roman';font-size:10pt;margin:0pt;"><span style="font-size:8pt;visibility:hidden;"></span></p><p style="font-family:'Times New Roman';font-size:10pt;text-indent:36pt;margin:0pt;">In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which changes accounting requirements for the recognition of credit losses from an incurred or probable impairment methodology to a current expected credit losses (CECL) methodology. The guidance is effective for interim and annual periods beginning after December 15, 2019. The guidance will be applied using the modified retrospective method with a cumulative effect adjustment to beginning retained earnings. Trade receivables (including the allowance for doubtful accounts) is the only financial instrument in scope for ASU 2016-13 currently held by the Company. We are currently evaluating the effect the guidance will have on our consolidated financial statements.</p>
CY2019	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	33205000
CY2018	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	14617000
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	10363000
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	45570000
CY2017	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	6895000
CY2019	nbr	Retirement And Impairment Charges For Tangible Assets RetirementAndImpairmentChargesForTangibleAssets	43568000
CY2018	nbr	Retirement And Impairment Charges For Tangible Assets RetirementAndImpairmentChargesForTangibleAssets	60187000
CY2017	nbr	Retirement And Impairment Charges For Tangible Assets RetirementAndImpairmentChargesForTangibleAssets	6895000
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	155973000
CY2019	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	47731000
CY2019	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	203704000
CY2019	nbr	Provision For International Operations ProvisionForInternationalOperations	43220000
CY2019	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	11447000
CY2018	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	14323000
CY2017	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	21628000
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	11468000
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-5268000
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-16013000
CY2018	nbr	Divestiture Of International Assets DivestitureOfInternationalAssets	64668000
CY2019	nbr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	290471000
CY2018	nbr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	144446000
CY2017	nbr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	44536000
CY2019	nbr	Provision For International Operations ProvisionForInternationalOperations	43200000
CY2019	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	11400000
CY2019	nbr	Debt Instrument Amount Of Debt Repurchased DebtInstrumentAmountOfDebtRepurchased	468300000
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	11500000
CY2018	nbr	Number Of Remaining Scr Rigs Retired NumberOfRemainingScrRigsRetired	13
CY2018	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	14600000
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	45600000
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	14300000
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-5300000
CY2018	nbr	Provision For International Operations ProvisionForInternationalOperations	64700000
CY2017	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	6900000
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	21600000
CY2019Q4	nbr	Fair Value Transfers Between Level1 And Level2 FairValueTransfersBetweenLevel1AndLevel2	0
CY2019Q4	us-gaap	Short Term Investments ShortTermInvestments	16500000
CY2018Q4	us-gaap	Short Term Investments ShortTermInvestments	34000000.0
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	24700000
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	26400000
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	31900000
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	13615622000
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	13695384000
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	8685073000
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	8227514000
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4930549000
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	5467870000
CY2019	us-gaap	Depreciation Depreciation	869600000
CY2018	us-gaap	Depreciation Depreciation	860600000
CY2017	us-gaap	Depreciation Depreciation	835900000
CY2019	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	248600000
CY2018	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	265600000
CY2017	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	241400000
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1500000
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1000000.0
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	2500000
CY2018Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	561000
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	3363552000
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	3624770000
CY2018Q4	us-gaap	Debt Current DebtCurrent	561000
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	30332000
CY2018Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	38325000
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3333220000
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3585884000
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	637162000
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	634999000
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	838281000
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	575000000
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	781502000
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	3466944000
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	11500000
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-5300000
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-16000000.0
CY2019Q4	nbr	Number Of Line Of Credit Facility NumberOfLineOfCreditFacility	18
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-588922000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-518794000
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-580084000
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1210000
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-32351000
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-160761000
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	318000
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1811000
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-810000
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	55625000
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2388000
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-102080000
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	3222000
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-113000
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-3226000
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	35951000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	76881000
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	19110000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	91576000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	79269000
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-82970000
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	54060000
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	49375000
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-98119000
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	32869000
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	38822000
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	29165000
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	138635000
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	1107000
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-10626000
CY2017	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	-148615000
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3540000
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1698000
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-4036000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	91576000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	79269000
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-82970000
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.155
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.153
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.143
CY2019	nbr	Income Tax Expense Benefit From Release Of Valuation Allowance IncomeTaxExpenseBenefitFromReleaseOfValuationAllowance	29600000
CY2019	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	14400000
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	2834851000
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1967910000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	6577000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	7038000
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	8873000
CY2018Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	16494000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	97215000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	100752000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	2248000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	2451000
CY2019Q4	nbr	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Interest DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedInterest	172120000
CY2018Q4	nbr	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Interest DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedInterest	206088000
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	95588000
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	82167000
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	3217472000
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	2382900000
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2813567000
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1917390000
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	403905000
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	465510000
CY2019Q4	nbr	Deferred Tax Liabilities Depreciation Amortization And Depletion For Tax In Excess Of Book Expense DeferredTaxLiabilitiesDepreciationAmortizationAndDepletionForTaxInExcessOfBookExpense	80155000
CY2018Q4	nbr	Deferred Tax Liabilities Depreciation Amortization And Depletion For Tax In Excess Of Book Expense DeferredTaxLiabilitiesDepreciationAmortizationAndDepletionForTaxInExcessOfBookExpense	102810000
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	21055000
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	23920000
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	101210000
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	126730000
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	302695000
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	338780000
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	305844000
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	345091000
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	3149000
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	6311000
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	302695000
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	338780000
CY2019Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	2600000000
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	25711000
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	33203000
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	179255000
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1003000
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	308000
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	25119000
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	860000
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	7800000
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	171171000
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	84000
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	25770000
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	25711000
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	33203000
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	25700000
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	7700000
CY2018	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	6700000
CY2017	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	9700000
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	800000
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1000000.0
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	500000
CY2019Q4	us-gaap	Capital Units Authorized CapitalUnitsAuthorized	825000000.0
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	800000000.0
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	25000000.0
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2017	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	3100000
CY2017	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	18100000
CY2017	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	0
CY2018	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	0
CY2019	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	0
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.01
CY2019	nbr	Premiums Paid Related To Related Party Insurance Agreements PremiumsPaidRelatedToRelatedPartyInsuranceAgreements	0
CY2019	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	672900000
CY2018	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	723800000
CY2017	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	65700000
CY2018	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	200000
CY2016	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	100000
CY2017	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	100000
CY2019Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	80600000
CY2018Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	122900000
CY2019	nbr	Minimum Period Of Operating Lease MinimumPeriodOfOperatingLease	P30D
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	15900000
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	18700000
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	15000000.0
CY2019	nbr	Estimated Multiplier Of Fines And Penalties EstimatedMultiplierOfFinesAndPenalties	4
CY2019Q4	nbr	Guarantee Obligations Maximum Exposure In Year One GuaranteeObligationsMaximumExposureInYearOne	216053000
CY2019Q4	nbr	Guarantee Obligations Maximum Exposure In Year Two GuaranteeObligationsMaximumExposureInYearTwo	3690000
CY2019Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	219743000
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-680498000
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-598063000
CY2017	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-497114000
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	22375000
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	28222000
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6178000
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	17244000
CY2018	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	12305000
CY2019	us-gaap	Noncontrolling Interest In Net Income Loss Other Noncontrolling Interests Redeemable NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsRedeemable	20534000
CY2018	us-gaap	Noncontrolling Interest In Net Income Loss Other Noncontrolling Interests Redeemable NoncontrollingInterestInNetIncomeLossOtherNoncontrollingInterestsRedeemable	11098000
CY2019	nbr	Distributed And Undistributed Earnings Loss Allocated To Participating Securities Basic DistributedAndUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	459000
CY2018	nbr	Distributed And Undistributed Earnings Loss Allocated To Participating Securities Basic DistributedAndUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	1819000
CY2017	nbr	Distributed And Undistributed Earnings Loss Allocated To Participating Securities Basic DistributedAndUndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-13210000
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-741110000
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-651507000
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-490082000
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-12000
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-14663000
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-43519000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	351617000
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	334397000
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	280653000
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-2.11
CY2018	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-1.95
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-1.75
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.04
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.15
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.11
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.99
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.90
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-741110000
CY2018	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-651507000
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-490082000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-741110000
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-651507000
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-490082000
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-12000
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-14663000
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-43519000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	351617000
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	334397000
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	280653000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	351617000
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	334397000
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	280653000
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-2.11
CY2018	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-1.95
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-1.75
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.04
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.15
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.11
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.99
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.90
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1994000
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4341000
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4534000
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	97003000
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	92358000
CY2019Q4	nbr	Deferred Revenue And Proceeds On Insurance And Asset Sales DeferredRevenueAndProceedsOnInsuranceAndAssetSales	89051000
CY2018Q4	nbr	Deferred Revenue And Proceeds On Insurance And Asset Sales DeferredRevenueAndProceedsOnInsuranceAndAssetSales	149266000
CY2019Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	31472000
CY2018Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	33199000
CY2019Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	30214000
CY2018Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	16316000
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	51316000
CY2018Q4	us-gaap	Interest Payable Current InterestPayableCurrent	59718000
CY2019Q4	us-gaap	Litigation Reserve Current LitigationReserveCurrent	14736000
CY2018Q4	us-gaap	Litigation Reserve Current LitigationReserveCurrent	24926000
CY2018Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	2445000
CY2019Q4	nbr	Dividends Declared And Payable DividendsDeclaredAndPayable	7832000
CY2018Q4	nbr	Dividends Declared And Payable DividendsDeclaredAndPayable	25330000
CY2019Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	11658000
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	14354000
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	333282000
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	417912000
CY2019	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	8424000
CY2018	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	4957000
CY2017	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	2227000
CY2019	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	1794000
CY2018	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-14456000
CY2017	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-1033000
CY2019	us-gaap	Investment Income Net InvestmentIncomeNet	10218000
CY2018	us-gaap	Investment Income Net InvestmentIncomeNet	-9499000
CY2017	us-gaap	Investment Income Net InvestmentIncomeNet	1194000
CY2019	nbr	Losses Gains On Sales Retirements And Involuntary Conversions Of Long Lived Assets LossesGainsOnSalesRetirementsAndInvoluntaryConversionsOfLongLivedAssets	7141000
CY2018	nbr	Losses Gains On Sales Retirements And Involuntary Conversions Of Long Lived Assets LossesGainsOnSalesRetirementsAndInvoluntaryConversionsOfLongLivedAssets	11789000
CY2017	nbr	Losses Gains On Sales Retirements And Involuntary Conversions Of Long Lived Assets LossesGainsOnSalesRetirementsAndInvoluntaryConversionsOfLongLivedAssets	19026000
CY2019	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	5226000
CY2018	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	9939000
CY2017	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	1273000
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-20929000
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-4156000
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1603000
CY2019	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	72000
CY2018	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-3648000
CY2017	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	7022000
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-33224000
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-29532000
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-14880000
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	6553000
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	11383000
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	20581000
CY2019	us-gaap	Interest Paid Net InterestPaidNet	174357000
CY2018	us-gaap	Interest Paid Net InterestPaidNet	202803000
CY2017	us-gaap	Interest Paid Net InterestPaidNet	191986000
CY2019	nbr	Change In Capital Expenditures Incurred But Not Yet Paid ChangeInCapitalExpendituresIncurredButNotYetPaid	-7624000
CY2018	nbr	Change In Capital Expenditures Incurred But Not Yet Paid ChangeInCapitalExpendituresIncurredButNotYetPaid	-8556000
CY2017	nbr	Change In Capital Expenditures Incurred But Not Yet Paid ChangeInCapitalExpendituresIncurredButNotYetPaid	-35227000
CY2018	nbr	Net Change In Assets Related To Increase In Redeemable Noncontrolling Interest In Subsidiary NetChangeInAssetsRelatedToIncreaseInRedeemableNoncontrollingInterestInSubsidiary	43928000
CY2017	nbr	Net Change In Assets Related To Increase In Redeemable Noncontrolling Interest In Subsidiary NetChangeInAssetsRelatedToIncreaseInRedeemableNoncontrollingInterestInSubsidiary	142875000
CY2019	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	2929000
CY2018	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	48053000
CY2017	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	280709000
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	11436000
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	5690000
CY2018	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	34489000
CY2017	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	55742000
CY2017	nbr	Business Combination Contingent Consideration Shares Issued BusinessCombinationContingentConsiderationSharesIssued	178993000
CY2019	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	2929000
CY2018	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	25000000
CY2017	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	51664000
CY2018	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	4141000
CY2017	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	63983000
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2929000
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	20859000
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-12319000
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	799640000
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	771406000
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	758076000
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	714261000
CY2019Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-103376000
CY2019Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-192801000
CY2019Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-99788000
CY2019Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-284533000
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-157000
CY2019Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-34000
CY2019Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	157000
CY2019Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	22000
CY2019Q1	us-gaap	Profit Loss ProfitLoss	-103533000
CY2019Q2	us-gaap	Profit Loss ProfitLoss	-192835000
CY2019Q3	us-gaap	Profit Loss ProfitLoss	-99631000
CY2019Q4	us-gaap	Profit Loss ProfitLoss	-284511000
CY2019Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	14176000
CY2019Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	10729000
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	19297000
CY2019Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-21827000
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-117709000
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	-203564000
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-118928000
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-262684000
CY2019Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4313000
CY2019Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4312000
CY2019Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4310000
CY2019Q4	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4309000
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-122022000
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-207876000
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-123238000
CY2019Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-266993000
CY2019Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.36
CY2019Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.61
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.37
CY2019Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.77
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.36
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.61
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.37
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.77
CY2019Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.36
CY2019Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.61
CY2019Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.37
CY2019Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.77
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.36
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.61
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.37
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.77
CY2018Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	734194000
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	761920000
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	779425000
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	782080000
CY2018Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-143587000
CY2018Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-195215000
CY2018Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-93710000
CY2018Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-165551000
CY2018Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-75000
CY2018Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-584000
CY2018Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-13933000
CY2018Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-71000
CY2018Q1	us-gaap	Profit Loss ProfitLoss	-143662000
CY2018Q2	us-gaap	Profit Loss ProfitLoss	-195799000
CY2018Q3	us-gaap	Profit Loss ProfitLoss	-107643000
CY2018Q4	us-gaap	Profit Loss ProfitLoss	-165622000
CY2018Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	539000
CY2018Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2953000
CY2018Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6934000
CY2018Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	17796000
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	-144201000
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	-198752000
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	-114577000
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	-183418000
CY2018Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3680000
CY2018Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4313000
CY2018Q4	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4312000
CY2018Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-144201000
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-202432000
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-118890000
CY2018Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-187730000
CY2018Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.46
CY2018Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.61
CY2018Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.31
CY2018Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.55
CY2018Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.04
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.46
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.61
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.35
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.55
CY2018Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.46
CY2018Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.61
CY2018Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.31
CY2018Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.55
CY2018Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.04
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.46
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.61
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.35
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.55
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	5
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3043383000
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3057619000
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2564285000
CY2018Q4	us-gaap	Goodwill Goodwill	183914000
CY2017Q4	us-gaap	Goodwill Goodwill	173226000
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3043383000
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3057619000
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2564285000
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	89145000
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	58621000
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	-141937000
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-5000
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1000
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	7000
CY2019	us-gaap	Investment Income Net InvestmentIncomeNet	10218000
CY2018	us-gaap	Investment Income Net InvestmentIncomeNet	-9499000
CY2017	us-gaap	Investment Income Net InvestmentIncomeNet	1194000
CY2019	us-gaap	Interest Expense InterestExpense	204311000
CY2018	us-gaap	Interest Expense InterestExpense	227124000
CY2017	us-gaap	Interest Expense InterestExpense	222889000
CY2019	nbr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	290471000
CY2018	nbr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	144446000
CY2017	nbr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	44536000
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-33224000
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-29532000
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-14880000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-588922000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-518794000
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-580084000
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	876091000
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	866870000
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	842943000
CY2019	nbr	Capital Expenditures CapitalExpenditures	423967000
CY2018	nbr	Capital Expenditures CapitalExpenditures	453435000
CY2017	nbr	Capital Expenditures CapitalExpenditures	539191000
CY2019Q4	us-gaap	Assets Assets	6760658000
CY2018Q4	us-gaap	Assets Assets	7853944000
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3043383000
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3057619000
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2564285000
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4930549000
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	5467870000
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6109565000
CY2019Q4	us-gaap	Goodwill Goodwill	28380000
CY2019	nbr	Lease Practical Expedient Land Easement LeasePracticalExpedientLandEasement	true
CY2019	us-gaap	Cumulative Effect On Retained Earnings Net Of Tax1 CumulativeEffectOnRetainedEarningsNetOfTax1	0
CY2018Q4	nbr	Trade Receivables Current TradeReceivablesCurrent	791200000
CY2018Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	55800000
CY2018Q4	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	32300000
CY2018Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	116700000
CY2018Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	69700000
CY2019Q4	nbr	Trade Receivables Current TradeReceivablesCurrent	507000000.0
CY2019Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	48600000
CY2019Q4	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	24900000
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	66800000
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	70500000
CY2019	nbr	Revenue Remaining Performance Obligation Recognized Timing Percentage RevenueRemainingPerformanceObligationRecognizedTimingPercentage	0.65
CY2019	nbr	Revenue Remaining Performance Obligation Expected Timing Percentage RevenueRemainingPerformanceObligationExpectedTimingPercentage	0.22
CY2019	nbr	Revenue Remaining Performance Obligation Expected Timing Percentage RevenueRemainingPerformanceObligationExpectedTimingPercentage	0.13
CY2019Q4	nbr	Contract Asset Amortization Percentage Recognized ContractAssetAmortizationPercentageRecognized	0.60
CY2019Q4	nbr	Contract Asset Amortization Percentage Second Year After Latest Fiscal Year ContractAssetAmortizationPercentageSecondYearAfterLatestFiscalYear	0.20
CY2019	nbr	Contract Asset Amortization Percentage Year Three Or Thereafter ContractAssetAmortizationPercentageYearThreeOrThereafter	0.20
CY2019	nbr	Lease Practical Expedient Transition Approach LeasePracticalExpedientTransitionApproach	true
CY2019	us-gaap	Lease Practical Expedients Package LeasePracticalExpedientsPackage	true
CY2019	nbr	Lease Practical Expedient Lease Capitalization LeasePracticalExpedientLeaseCapitalization	true
CY2019	nbr	Lease Practical Expedient Separate Lease Non Lease Components LeasePracticalExpedientSeparateLeaseNonLeaseComponents	false
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	46647000
CY2019Q4	nbr	Lease Assets LeaseAssets	46647000
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	13479000
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	33396000
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	46875000
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	16154000
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2568000
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	605000
CY2019	us-gaap	Lease Cost LeaseCost	19327000
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	16154000
CY2019Q4	nbr	Right Of Use Assets Obtained In Exchange For Operating Lease Obligations RightOfUseAssetsObtainedInExchangeForOperatingLeaseObligations	17852000
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y1M17D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0597
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	15586000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	10344000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	7099000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	4816000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2577000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	17649000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	58071000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	11196000
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	46875000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	10701000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	7104000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	3774000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2356000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	1538000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	7482000
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	32955000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	435990000
CY2019Q4	us-gaap	Short Term Investments ShortTermInvestments	16506000
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	453042000
CY2019Q4	us-gaap	Inventory Net InventoryNet	176341000
CY2019Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	2530000
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	164257000
CY2019Q4	us-gaap	Assets Current AssetsCurrent	1248666000
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4930549000
CY2019Q4	us-gaap	Goodwill Goodwill	28380000
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	305844000
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	247219000
CY2019Q4	us-gaap	Assets Assets	6760658000
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	295159000
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	333282000
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	14628000
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	13479000
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	656548000
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3333220000
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	292184000
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	3149000
CY2019Q4	us-gaap	Liabilities Liabilities	4285101000
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	425392000
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1982811000
CY2019Q4	us-gaap	Minority Interest MinorityInterest	67354000
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2050165000
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6760658000
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	447766000
CY2018Q4	us-gaap	Short Term Investments ShortTermInvestments	34036000
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	756320000
CY2018Q4	us-gaap	Inventory Net InventoryNet	165587000
CY2018Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation Current AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent	12250000
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	177604000
CY2018Q4	us-gaap	Assets Current AssetsCurrent	1593563000
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	5467870000
CY2018Q4	us-gaap	Goodwill Goodwill	183914000
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	345091000
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	263506000
CY2018Q4	us-gaap	Assets Assets	7853944000
CY2018Q4	us-gaap	Debt Current DebtCurrent	561000
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	392843000
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	417912000
CY2018Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	20761000
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	832077000
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	3585884000
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	274485000
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	6311000
CY2018Q4	us-gaap	Liabilities Liabilities	4698757000
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	404861000
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2700850000
CY2018Q4	us-gaap	Minority Interest MinorityInterest	49476000
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2750326000
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7853944000
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CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-5000
CY2019	us-gaap	Investment Income Net InvestmentIncomeNet	10218000
CY2019	nbr	Revenues And Other Income RevenuesAndOtherIncome	3053596000
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CY2019	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	258731000
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	50359000
CY2019	nbr	Depreciation And Amortization Continuing Operations DepreciationAndAmortizationContinuingOperations	876091000
CY2019	us-gaap	Interest Expense InterestExpense	204311000
CY2019	nbr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	290471000
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-33224000
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	3642518000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-588922000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	91576000
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-680498000
CY2019	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-12000
CY2019	us-gaap	Profit Loss ProfitLoss	-680510000
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	22375000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-702885000
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	17244000
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-720129000
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3057619000
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1000
CY2018	us-gaap	Investment Income Net InvestmentIncomeNet	-9499000
CY2018	nbr	Revenues And Other Income RevenuesAndOtherIncome	3048121000
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1976974000
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	265822000
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	56147000
CY2018	nbr	Depreciation And Amortization Continuing Operations DepreciationAndAmortizationContinuingOperations	866870000
CY2018	us-gaap	Interest Expense InterestExpense	227124000
CY2018	nbr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	144446000
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-29532000
CY2018	us-gaap	Costs And Expenses CostsAndExpenses	3566915000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-518794000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	79269000
CY2018	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-598063000
CY2018	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-14663000
CY2018	us-gaap	Profit Loss ProfitLoss	-612726000
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	28222000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-640948000
CY2018	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	12305000
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-653253000
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2564285000
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	7000
CY2017	us-gaap	Investment Income Net InvestmentIncomeNet	1194000
CY2017	nbr	Revenues And Other Income RevenuesAndOtherIncome	2565486000
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	1718069000
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	251184000
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	51069000
CY2017	nbr	Depreciation And Amortization Continuing Operations DepreciationAndAmortizationContinuingOperations	842943000
CY2017	us-gaap	Interest Expense InterestExpense	222889000
CY2017	nbr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	44536000
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-14880000
CY2017	us-gaap	Costs And Expenses CostsAndExpenses	3145570000
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-580084000
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-82970000
CY2017	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-497114000
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-43519000
CY2017	us-gaap	Profit Loss ProfitLoss	-540633000
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6178000
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-546811000
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-546811000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-702885000
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	16943000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-217000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	567000
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	17727000
CY2019	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	190000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	17537000
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-685348000
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	22375000
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	55000
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	22430000
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-662918000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	-640948000
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	-31962000
CY2018	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	676000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-216000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	567000
CY2018	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax	9144000
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-40323000
CY2018	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	187000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-40510000
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-681458000
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	28222000
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-251000
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	27971000
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-653487000
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-546811000
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent	28372000
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-6061000
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-970000
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-5091000
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	275000
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax	613000
CY2017	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	23619000
CY2017	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	315000
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	23304000
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-523507000
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6178000
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	282000
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	6460000
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-517047000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	684558000
CY2019	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	4323000
CY2019	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	18849000
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2929000
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	427741000
CY2019	nbr	Proceeds From Sale Of Productive Assets And Proceeds From Insurance Settlement ProceedsFromSaleOfProductiveAssetsAndProceedsFromInsuranceSettlement	60288000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-355856000
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	455360000
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1767000
CY2019	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	1050000000
CY2019	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-865000000
CY2019	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	561000
CY2019	nbr	Payments Of Dividends Common Stock And Preferred Stock PaymentsOfDividendsCommonStockAndPreferredStock	49583000
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	4552000
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-4750000
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-331573000
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-6171000
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-9042000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	451080000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	442038000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	325773000
CY2018	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	4287000
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	20859000
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	458938000
CY2018	nbr	Proceeds From Sale Of Productive Assets And Proceeds From Insurance Settlement ProceedsFromSaleOfProductiveAssetsAndProceedsFromInsuranceSettlement	109098000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-367088000
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	800000000
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	878278000
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	21277000
CY2018	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	1135000000
CY2018	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-1475000000
CY2018	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	-40000000
CY2018	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	380000
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	301404000
CY2018	us-gaap	Proceeds From Issuance Of Convertible Preferred Stock ProceedsFromIssuanceOfConvertiblePreferredStock	277927000
CY2018	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	87098000
CY2018	nbr	Proceeds From Redeemable Noncontrolling Interest Contribution ProceedsFromRedeemableNoncontrollingInterestContribution	156935000
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	5452000
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-8912000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	155629000
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-5263000
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	109051000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	342029000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	451080000
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	62756000
CY2017	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	6722000
CY2017	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	13069000
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-12319000
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	574467000
CY2017	nbr	Proceeds From Sale Of Productive Assets And Proceeds From Insurance Settlement ProceedsFromSaleOfProductiveAssetsAndProceedsFromInsuranceSettlement	57933000
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-497868000
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	411200000
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	381814000
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	11043000
CY2017	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	725000000
CY2017	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-215000000
CY2017	us-gaap	Proceeds From Repayments Of Commercial Paper ProceedsFromRepaymentsOfCommercialPaper	40000000
CY2017	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	159952000
CY2017	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	40250000
CY2017	us-gaap	Repayments Of Debt RepaymentsOfDebt	162500000
CY2017	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	543000
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	8300000
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	18071000
CY2017	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	68503000
CY2017	nbr	Proceeds From Redeemable Noncontrolling Interest Contribution ProceedsFromRedeemableNoncontrollingInterestContribution	61123000
CY2017	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	20000000
CY2017	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	7272000
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-8399000
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	512180000
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-29000
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	77039000
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	264990000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	342029000

Files In Submission

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2018 Q4 Form 10-K Financial Statement

#000155837020001335 Filed on February 25, 2020

Income Statement

Balance Sheet

Cashflow Statement

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$NBR NABORS INDUSTRIES LTD Stock $nbr

2018 Q4 Form 10-K Financial Statement

#000155837020001335 Filed on February 25, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NBR
NABORS INDUSTRIES LTD Stock $nbr