$NBR
NABORS INDUSTRIES LTD Stock $nbr

$nbr Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-K Financial Statement

#000110465913016655 Filed on March 01, 2013

Income Statement

Concept	2012 Q4	2011 Q4	2011 Q3
Revenue	$1.479B	$1.743B	$1.609B
YoY Change	-15.1%	32.62%	54.56%
Cost Of Revenue	$922.8M	$1.088B	$1.019B
YoY Change	-15.18%	41.98%	66.71%
Gross Profit	$556.5M	$654.6M	$589.1M
YoY Change	-14.99%	19.54%	37.25%
Gross Profit Margin	37.62%	37.57%	36.62%
Selling, General & Admin	$126.1M	$131.5M	$119.4M
YoY Change	-4.11%	30.72%	44.9%
% of Gross Profit	22.66%	20.09%	20.27%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$277.4M	$240.7M	$234.8M
YoY Change	15.25%	9.86%	18.05%
% of Gross Profit	49.85%	36.77%	39.86%
Operating Expenses	$387.3M	$371.3M	$354.0M
YoY Change	4.31%	16.39%	38.28%
Operating Profit	$169.2M	$283.3M	$269.3M
YoY Change	-40.28%	23.93%	55.48%
Interest Expense	-$48.20M	-$63.50M	$58.06M
YoY Change	-24.09%	-8.1%	-247.74%
% of Operating Profit	-28.49%	-22.41%	21.56%
Other Income/Expense, Net
YoY Change
Pretax Income	$136.1M	$114.1M	$125.5M
YoY Change	19.28%	-25.47%	252.53%
Income Tax	$12.10M	$23.80M	$37.56M
% Of Pretax Income	8.89%	20.86%	29.93%
Net Earnings	$27.08M	-$105.9M	$74.26M
YoY Change	-125.58%	-306.74%	-287.52%
Net Earnings / Revenue	1.83%	-6.07%	4.62%
Basic Earnings Per Share	$0.09	-$0.37	$0.26
Diluted Earnings Per Share	$0.09	-$0.36	$0.25
COMMON SHARES
Basic Shares Outstanding	290.4M shares		287.5M shares
Diluted Shares Outstanding			292.0M shares

Balance Sheet

Concept	2012 Q4	2011 Q4	2011 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$550.9M	$456.5M	$395.0M
YoY Change	20.69%	-43.01%	-48.83%
Cash & Equivalents	$524.9M	$398.6M	$275.5M
Short-Term Investments	$25.97M	$57.88M	$120.0M
Other Short-Term Assets	$226.6M	$170.0M	$518.0M
YoY Change	33.24%	-68.28%	-20.06%
Inventory	$251.1M	$272.9M	$233.0M
Prepaid Expenses
Receivables	$1.383B	$1.577B	$1.398B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$3.133B	$3.088B	$2.544B
YoY Change	1.44%	18.19%	-0.86%
LONG-TERM ASSETS
Property, Plant & Equipment	$8.712B	$8.630B	$8.577B
YoY Change	0.95%	10.42%	8.78%
Goodwill	$472.3M	$501.3M
YoY Change	-5.77%	1.39%
Intangibles
YoY Change
Long-Term Investments	$61.70M	$371.0M	$363.0M
YoY Change	-83.37%	20.45%	17.1%
Other Assets	$272.8M	$310.5M	$332.0M
YoY Change	-12.14%	-25.37%	-16.37%
Total Long-Term Assets	$9.523B	$9.824B	$9.774B
YoY Change	-3.06%	8.75%	7.94%
TOTAL ASSETS
Total Short-Term Assets	$3.133B	$3.088B	$2.544B
Total Long-Term Assets	$9.523B	$9.824B	$9.774B
Total Assets	$12.66B	$12.91B	$12.32B
YoY Change	-1.98%	10.87%	6.0%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$499.0M	$782.8M	$665.0M
YoY Change	-36.25%	116.83%	68.78%
Accrued Expenses	$599.4M	$716.8M	$298.0M
YoY Change	-16.38%	149.75%	17.32%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$364.0K	$275.3M	$275.0M
YoY Change	-99.87%	-80.03%	-80.94%
Total Short-Term Liabilities	$1.132B	$1.803B	$1.416B
YoY Change	-37.18%	-16.32%	-37.4%
LONG-TERM LIABILITIES
Long-Term Debt	$4.379B	$4.348B	$4.088B
YoY Change	0.71%	41.92%	33.29%
Other Long-Term Liabilities	$518.7M	$292.8M	$220.0M
YoY Change	77.16%	19.01%	-5.98%
Total Long-Term Liabilities	$4.898B	$4.641B	$4.308B
YoY Change	5.53%	40.22%	30.51%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.132B	$1.803B	$1.416B
Total Long-Term Liabilities	$4.898B	$4.641B	$4.308B
Total Liabilities	$6.630B	$7.242B	$6.617B
YoY Change	-8.45%	15.89%	4.3%
SHAREHOLDERS EQUITY
Retained Earnings	$4.120B	$3.956B
YoY Change	4.17%	6.84%
Common Stock	$2.338B	$2.288B
YoY Change	2.16%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$944.6M	$977.9M
YoY Change	-3.4%
Treasury Stock Shares	28.41M shares	29.41M shares
Shareholders Equity	$5.945B	$5.588B	$5.701B
YoY Change
Total Liabilities & Shareholders Equity	$12.66B	$12.91B	$12.32B
YoY Change	-1.98%	10.86%	6.0%

Cashflow Statement

Concept	2012 Q4	2011 Q4	2011 Q3
OPERATING ACTIVITIES
Net Income	$27.08M	-$105.9M	$74.26M
YoY Change	-125.58%	-306.74%	-287.52%
Depreciation, Depletion And Amortization	$277.4M	$240.7M	$234.8M
YoY Change	15.25%	9.86%	18.05%
Cash From Operating Activities	$468.7M	$348.4M	$238.2M
YoY Change	34.53%	-18.0%	12.25%
INVESTING ACTIVITIES
Capital Expenditures	-$296.8M	-$510.0M	-$529.4M
YoY Change	-41.8%	76.29%	94.99%
Acquisitions
YoY Change
Other Investing Activities	$181.4M	$24.80M	-$45.90M
YoY Change	631.45%	-147.42%	-93.42%
Cash From Investing Activities	-$115.4M	-$485.2M	-$575.2M
YoY Change	-76.22%	42.0%	-40.63%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-300.0M	261.1M	88.20M
YoY Change	-214.9%	-408.26%	-86.34%
NET CHANGE
Cash From Operating Activities	468.7M	348.4M	238.2M
Cash From Investing Activities	-115.4M	-485.2M	-575.2M
Cash From Financing Activities	-300.0M	261.1M	88.20M
Net Change In Cash	53.30M	124.3M	-248.8M
YoY Change	-57.12%	-8386.67%	123.94%
FREE CASH FLOW
Cash From Operating Activities	$468.7M	$348.4M	$238.2M
Capital Expenditures	-$296.8M	-$510.0M	-$529.4M
Free Cash Flow	$765.5M	$858.4M	$767.6M
YoY Change	-10.82%	20.19%	58.69%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2011Q4	us-gaap	Short Term Investments ShortTermInvestments	140914000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1576555000	USD
CY2011Q4	us-gaap	Assets Held For Sale Current AssetsHeldForSaleCurrent	401500000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12656022000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	398575000	USD
CY2012	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	291036865	shares
CY2012	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
CY2012	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012Q4	us-gaap	Assets Assets	12656022000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1132382000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	6629717000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	5944929000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5957117000	USD
CY2011Q4	us-gaap	Inventory Net InventoryNet	272852000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	127874000	USD
CY2011Q4	us-gaap	Other Assets Current OtherAssetsCurrent	170044000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	3088314000	USD
CY2011Q4	us-gaap	Long Term Investments And Receivables Net LongTermInvestmentsAndReceivablesNet	11124000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	8629946000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	501258000	USD
CY2011Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	371021000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	310477000	USD
CY2011Q4	us-gaap	Assets Assets	12912140000	USD
CY2011Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	275326000	USD
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	782753000	USD
CY2011Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	716773000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1802562000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4348490000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	292758000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	797925000	USD
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	121167000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	7241735000	USD
CY2011Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Noncontrolling Interest TemporaryEquityCarryingAmountAttributableToNoncontrollingInterest	69188000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	317000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2287743000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	321264000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3956364000	USD
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	977873000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest	13402000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5601217000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12912140000	USD
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	800000000	shares
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	317042000	shares
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	29414000	shares
CY2012	nbr	Revenues And Other Income RevenuesAndOtherIncome	6751390000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	274683000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32628000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	239055000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	164034000	USD
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.56
CY2011	us-gaap	Sales Revenue Net SalesRevenueNet	6060351000	USD
CY2010	us-gaap	Sales Revenue Net SalesRevenueNet	4134483000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	56647000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	33267000	USD
CY2011	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	19940000	USD
CY2010	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	7263000	USD
CY2011	nbr	Revenues And Other Income RevenuesAndOtherIncome	6136938000	USD
CY2010	nbr	Revenues And Other Income RevenuesAndOtherIncome	4175013000	USD
CY2011	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	3775964000	USD
CY2010	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2400519000	USD
CY2011	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	489892000	USD
CY2010	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	338720000	USD
CY2011	nbr	Depreciation And Amortization Continuing Operations DepreciationAndAmortizationContinuingOperations	924094000	USD
CY2010	nbr	Depreciation And Amortization Continuing Operations DepreciationAndAmortizationContinuingOperations	760962000	USD
CY2011	us-gaap	Interest Expense InterestExpense	256633000	USD
CY2010	us-gaap	Interest Expense InterestExpense	272712000	USD
CY2011	nbr	Losses Gains On Sales Retirements And Impairments Of Long Lived Assets And Other Expense Income Net LossesGainsOnSalesRetirementsAndImpairmentsOfLongLivedAssetsAndOtherExpenseIncomeNet	4514000	USD
CY2011	nbr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	198072000	USD
CY2010	nbr	Losses Gains On Sales Retirements And Impairments Of Long Lived Assets And Other Expense Income Net LossesGainsOnSalesRetirementsAndImpairmentsOfLongLivedAssetsAndOtherExpenseIncomeNet	47238000	USD
CY2010	nbr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	61292000	USD
CY2011	us-gaap	Costs And Expenses CostsAndExpenses	5649169000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	487769000	USD
CY2010	us-gaap	Costs And Expenses CostsAndExpenses	3881443000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	293570000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	109702000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	32903000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	142605000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-77209000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	114159000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	36950000	USD
CY2011	nbr	Subsidiary Preferred Stock Dividend SubsidiaryPreferredStockDividend	-3000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	342164000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-97440000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	244724000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1045000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	243679000	USD
CY2010	nbr	Subsidiary Preferred Stock Dividend SubsidiaryPreferredStockDividend	-750000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	255870000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-161090000	USD
CY2010	us-gaap	Profit Loss ProfitLoss	94780000	USD
CY2010	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	85000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	94695000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.19
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.34
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.17
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.34
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.83
CY2010	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.90
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.57
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2010	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.88
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.55
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	289965000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	287118000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	292323000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	292484000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	285145000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	289996000	shares
CY2012	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	84733000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	2320000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-22565000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	106184000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	110331000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	932000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	275297000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	21073000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	98138000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	-13405000	USD
CY2012	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	-324000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	702000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-4147000	USD
CY2012	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	621000	USD
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	311000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-1416000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	53823000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1562705000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1179628000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-254127000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	126347000	USD
CY2011	nbr	Depreciation And Amortization Including Discontinued Operations DepreciationAndAmortizationIncludingDiscontinuedOperations	927460000	USD
CY2011	nbr	Depletions Depletions	44551000	USD
CY2011	nbr	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	-34739000	USD
CY2011	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5107000	USD
CY2011	nbr	Pension Liability Amortization And Adjustments PensionLiabilityAmortizationAndAdjustments	818000	USD
CY2011	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	27042000	USD
CY2011	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	927000	USD
CY2011	nbr	Impairments And Other Charges ImpairmentsAndOtherCharges	460971000	USD
CY2011	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	51945000	USD
CY2011	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	12486000	USD
CY2011	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-58000	USD
CY2011	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-234000	USD
CY2011	us-gaap	Gain On Purchase Of Business GainOnPurchaseOfBusiness	13114000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	21244000	USD
CY2011	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-5725000	USD
CY2010	nbr	Depreciation And Amortization Including Discontinued Operations DepreciationAndAmortizationIncludingDiscontinuedOperations	766519000	USD
CY2010	nbr	Depletions Depletions	27002000	USD
CY2010	nbr	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	55964000	USD
CY2010	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5431000	USD
CY2010	nbr	Pension Liability Amortization And Adjustments PensionLiabilityAmortizationAndAdjustments	664000	USD
CY2010	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	70719000	USD
CY2010	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	786000	USD
CY2010	nbr	Impairments And Other Charges ImpairmentsAndOtherCharges	260931000	USD
CY2010	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	1050000	USD
CY2010	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-191000	USD
CY2010	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-7042000	USD
CY2010	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-2471000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	459455000	USD
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	13746000	USD
CY2010	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-17880000	USD
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	114896000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	24820000	USD
CY2011	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-71867000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	517615000	USD
CY2011	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	999000	USD
CY2011	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-27967000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1456487000	USD
CY2010	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	249725000	USD
CY2010	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	15201000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-6589000	USD
CY2010	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-7509000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	70463000	USD
CY2010	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-19208000	USD
CY2010	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-2804000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1106984000	USD
CY2011	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	11746000	USD
CY2011	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	39063000	USD
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	55459000	USD
CY2011	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	112262000	USD
CY2011	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	2042617000	USD
CY2011	nbr	Proceeds From Sale Of Productive Assets And Proceeds From Insurance Settlement ProceedsFromSaleOfProductiveAssetsAndProceedsFromInsuranceSettlement	180558000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1859479000	USD
CY2010	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	34147000	USD
CY2010	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	34613000	USD
CY2010	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	733630000	USD
CY2010	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	40936000	USD
CY2010	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	930277000	USD
CY2010	nbr	Proceeds From Sale Of Productive Assets And Proceeds From Insurance Settlement ProceedsFromSaleOfProductiveAssetsAndProceedsFromInsuranceSettlement	31072000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1673305000	USD
CY2011	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	6375000	USD
CY2010	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	-6298000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	697578000	USD
CY2010	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	696948000	USD
CY2011	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	7141000	USD
CY2010	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	8934000	USD
CY2011	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	1560000000	USD
CY2010	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	600000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	11605000	USD
CY2010	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	8201000	USD
CY2011	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1404281000	USD
CY2010	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	398514000	USD
CY2011	nbr	Gain On Repurchase Of Convertible Debt Equity Component GainOnRepurchaseOfConvertibleDebtEquityComponent	-12000	USD
CY2010	nbr	Gain On Repurchase Of Convertible Debt Equity Component GainOnRepurchaseOfConvertibleDebtEquityComponent	-4712000	USD
CY2011	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2626000	USD
CY2010	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1935000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	1747000	USD
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	31000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	163245000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	280254000	USD
CY2011	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-3380000	USD
CY2010	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-46000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-286113000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-312319000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	524922000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	927815000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	641702000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5181979000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	50069000	USD
CY2010	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	8201000	USD
CY2010	nbr	Share Based Compensations ShareBasedCompensations	13746000	USD
CY2010	us-gaap	Stockholders Equity Other StockholdersEquityOther	5912000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5342863000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-20973000	USD
CY2011	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	11605000	USD
CY2011	nbr	Share Based Compensations ShareBasedCompensations	21244000	USD
CY2011	us-gaap	Stockholders Equity Other StockholdersEquityOther	-1754000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	164655000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	110642000	USD
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	-3625000	USD
CY2012	nbr	Adjustments To Additional Paid In Capital Contribution From Forgiveness Of Liability Net Of Tax AdjustmentsToAdditionalPaidInCapitalContributionFromForgivenessOfLiabilityNetOfTax	62734000	USD
CY2012	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	7750000	USD
CY2012	nbr	Share Based Compensations ShareBasedCompensations	18312000	USD
CY2012Q2	dei	Entity Public Float EntityPublicFloat	3971482675	USD
CY2012Q4	nbr	Number Of Major Business Lines NumberOfMajorBusinessLines	2	item
CY2012	nbr	Number Of Platform Rigs Actively Marketed NumberOfPlatformRigsActivelyMarketed	36	rig
CY2012	nbr	Number Of Jack Up Rigs Actively Marketed NumberOfJackUpRigsActivelyMarketed	12	rig
CY2012	nbr	Number Of Barge Rigs Actively Marketed NumberOfBargeRigsActivelyMarketed	4	rig
CY2012	nbr	Number Of Hydraulic Horsepower Pressure Pumping Services In Key Basins NumberOfHydraulicHorsepowerPressurePumpingServicesInKeyBasins	805000	item
CY2012	us-gaap	Nature Of Operations NatureOfOperations	<div style='font-size:10.0pt;FONT-FAMILY: Times New Roman;'> <p style="MARGIN: 0in 0in 0pt"><b><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2">Note 1 Nature of Operations</font></b></p> <p style="MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2">Nabors is the largest land drilling contractor in the world and one of the largest land well-servicing and workover contractors in the United States and Canada:</font></p> <p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: -7.9pt; MARGIN: 0in 0in 0pt 29.5pt"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 3pt" size="1">   </font> <font style="FONT-SIZE: 10pt" size="2">We actively market approximately 474 land drilling rigs for oil and gas land drilling operations in the  U.S. Lower 48 states, Alaska, Canada and over 20 other countries throughout the world.</font></p> <p style="TEXT-INDENT: -7.9pt; MARGIN: 0in 0in 0pt 29.5pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: -7.9pt; MARGIN: 0in 0in 0pt 29.5pt"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 3pt" size="1">   </font> <font style="FONT-SIZE: 10pt" size="2">We actively market approximately 442 rigs for land well-servicing and workover work in the United States and approximately 106 rigs for land well-servicing and workover work in Canada.</font></p> <p style="TEXT-INDENT: -7.9pt; MARGIN: 0in 0in 0pt 29.5pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2">We are also a leading provider of offshore platform workover and drilling rigs, and actively market 36 platform, 12 jackup and 4 barge rigs in the United States, including the Gulf of Mexico, and multiple international markets.</font></p> <p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: 0.2in; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2">In addition to the foregoing services:</font></p> <p style="TEXT-INDENT: 0.2in; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 3pt" size="1">                 </font> <font style="FONT-SIZE: 10pt" size="2">We provide completion and production services, including hydraulic fracturing, cementing, nitrogen and acid pressure pumping services with over 805,000 hydraulic horsepower in key basins throughout the United States and Canada.</font></p> <p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 3pt" size="1">                 </font> <font style="FONT-SIZE: 10pt" size="2">We offer a wide range of ancillary well-site services, including engineering, transportation and disposal, construction, maintenance, well logging, directional drilling, rig instrumentation, data collection and other support services in select U.S. and international markets.</font></p> <p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 3pt" size="1">                 </font> <font style="FONT-SIZE: 10pt" size="2">We manufacture and lease or sell top drives for a broad range of drilling applications, directional drilling systems, rig instrumentation and data collection equipment, pipeline handling equipment and rig reporting software.</font></p> <p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 3pt" size="1">                 </font> <font style="FONT-SIZE: 10pt" size="2">We have a 51% ownership interest in a joint venture in Saudi Arabia, which owns and actively markets nine rigs in addition to the rigs we lease to the joint venture.</font></p> <p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2">The majority of our business is conducted through two business lines:</font></p> <p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 3pt" size="1">                 </font> <font style="FONT-SIZE: 10pt" size="2">Our Drilling & Rig Services business line includes our drilling operations for oil and natural gas wells, on land and offshore, and companies engaged in drilling technology, top drive manufacturing, directional drilling, construction services, and rig instrumentation and software.</font></p> <p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 3pt" size="1">                 </font> <font style="FONT-SIZE: 10pt" size="2">Our Completion & Production Services business line includes our well-servicing, fluid logistics, workover operations and our pressure pumping services.</font></p> <p style="TEXT-INDENT: -0.25in; MARGIN: 0in 0in 0pt 0.5in"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2">The consolidated financial statements and related footnotes are presented in accordance with GAAP.</font></p></div>
CY2012	nbr	Number Of Actively Marketed Land Drilling Rigs NumberOfActivelyMarketedLandDrillingRigs	474	rig
CY2012Q4	nbr	Number Of States In Which Oil Gas And Geothermal Land Drilling Operations Conducted NumberOfStatesInWhichOilGasAndGeothermalLandDrillingOperationsConducted	48	item
CY2011Q4	us-gaap	Equity Method Investments EquityMethodInvestments	371000000	USD
CY2012Q4	us-gaap	Equity Method Investments EquityMethodInvestments	61700000	USD
CY2011Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	133480000	USD
CY2011Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	50951000	USD
CY2011Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	88421000	USD
CY2012Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	148822000	USD
CY2012Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	45733000	USD
CY2012Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	56578000	USD
CY2012Q4	us-gaap	Inventory Net InventoryNet	251133000	USD
CY2010Q4	us-gaap	Goodwill Goodwill	494372000	USD
CY2011	nbr	Goodwill Acquisitions And Purchase Price Adjustments GoodwillAcquisitionsAndPurchasePriceAdjustments	7233000	USD
CY2011	us-gaap	Goodwill Translation Adjustments GoodwillTranslationAdjustments	-347000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	472326000	USD
CY2012	nbr	Goodwill Impairments And Disposals GoodwillImpairmentsAndDisposals	29314000	USD
CY2012	us-gaap	Goodwill Translation Adjustments GoodwillTranslationAdjustments	382000	USD
CY2012	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	138666000	USD
CY2010	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	10707000	USD
CY2012	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	74960000	USD
CY2012	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	26279000	USD
CY2012	nbr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	290260000	USD
CY2011	nbr	Number Of Jackup Rigs Decommissioned And Retired NumberOfJackupRigsDecommissionedAndRetired	1	rig
CY2011	nbr	Provision For Termination Payment ProvisionForTerminationPayment	100000000	USD
CY2011	nbr	Land Rigs Retired Number LandRigsRetiredNumber	116	rig
CY2011Q4	us-gaap	Trading Securities Equity Current TradingSecuritiesEquityCurrent	11600000	USD
CY2012Q4	us-gaap	Trading Securities Equity Current TradingSecuritiesEquityCurrent	52705000	USD
CY2011Q4	us-gaap	Available For Sale Securities Equity Securities Current AvailableForSaleSecuritiesEquitySecuritiesCurrent	71433000	USD
CY2011Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	57881000	USD
CY2012Q4	us-gaap	Available For Sale Securities Equity Securities Current AvailableForSaleSecuritiesEquitySecuritiesCurrent	174610000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Securities Current AvailableForSaleSecuritiesDebtSecuritiesCurrent	25967000	USD
CY2012Q4	us-gaap	Short Term Investments ShortTermInvestments	253282000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	398575000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	524922000	USD
CY2011Q4	us-gaap	Trading Securities Fair Value Disclosure TradingSecuritiesFairValueDisclosure	11600000	USD
CY2011	us-gaap	Trading Securities Unrealized Holding Gain TradingSecuritiesUnrealizedHoldingGain	5876000	USD
CY2012Q4	us-gaap	Trading Securities Fair Value Disclosure TradingSecuritiesFairValueDisclosure	52705000	USD
CY2012	us-gaap	Trading Securities Unrealized Holding Gain TradingSecuritiesUnrealizedHoldingGain	46981000	USD
CY2011Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	129314000	USD
CY2012Q4	us-gaap	Available For Sale Securities Fair Value Disclosure AvailableForSaleSecuritiesFairValueDisclosure	200577000	USD
CY2011Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	55592000	USD
CY2012Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	139205000	USD
CY2011Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	2348000	USD
CY2012Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	1225000	USD
CY2011Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	539489000	USD
CY2012Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	778204000	USD
CY2011Q4	nbr	Cash Cash Equivalents And Short Term Investments Gross Unrealized Gains CashCashEquivalentsAndShortTermInvestmentsGrossUnrealizedGains	61468000	USD
CY2012Q4	nbr	Cash Cash Equivalents And Short Term Investments Gross Unrealized Gains CashCashEquivalentsAndShortTermInvestmentsGrossUnrealizedGains	186186000	USD
CY2011Q4	nbr	Cash Cash Equivalents And Short Term Investments Gross Unrealized Losses CashCashEquivalentsAndShortTermInvestmentsGrossUnrealizedLosses	2348000	USD
CY2012Q4	nbr	Cash Cash Equivalents And Short Term Investments Gross Unrealized Losses CashCashEquivalentsAndShortTermInvestmentsGrossUnrealizedLosses	1225000	USD
CY2012Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	18180000	USD
CY2012Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	535000	USD
CY2012Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses2	1031000	USD
CY2012Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses2 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses2	194000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	206000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	19225000	USD
CY2012Q4	nbr	Available For Sale Securities Debt Maturities Rolling After Year Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearFiveFairValue	6536000	USD
CY2012	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	24010000	USD
CY2012	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	13405000	USD
CY2011	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	12672000	USD
CY2010	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	13062000	USD
CY2011	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	3036000	USD
CY2010	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	1694000	USD
CY2011Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	4693004000	USD
CY2011Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	5187676000	USD
CY2012Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	4448888000	USD
CY2012Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	5142918000	USD
CY2012Q4	nbr	Temporary Equity Fair Value TemporaryEquityFairValue	68625000	USD
CY2011Q4	nbr	Temporary Equity Fair Value TemporaryEquityFairValue	68625000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	18200000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	21200000	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13700000	USD
CY2011Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	1712000	USD
CY2011Q4	us-gaap	Long Term Debt LongTermDebt	4623816000	USD
CY2012Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	437000	USD
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	4379700000	USD
CY2012Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	364000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	4379336000	USD
CY2012	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1100000	shares
CY2011	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1100000	shares
CY2010	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	700000	shares
CY2011	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	11600000	USD
CY2010	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	8200000	USD
CY2012Q4	nbr	Automobile Claims Deductible AutomobileClaimsDeductible	1000000	USD
CY2012Q4	nbr	Guarantee Obligations Maximum Exposure In Year One GuaranteeObligationsMaximumExposureInYearOne	92931000	USD
CY2012Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	93036000	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	238434000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	341119000	USD
CY2010	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	255785000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	238434000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	341119000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	255785000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.82
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.25
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.82
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.26
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2358000	shares
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	14200915	shares
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	9241543	shares
CY2010	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	14004749	shares
CY2011Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	173732000	USD
CY2011Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	172578000	USD
CY2011Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	44652000	USD
CY2011Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	22645000	USD
CY2011Q4	us-gaap	Interest Payable Current InterestPayableCurrent	99869000	USD
CY2011Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	5237000	USD
CY2011Q4	us-gaap	Litigation Reserve Current LitigationReserveCurrent	23687000	USD
CY2011Q4	us-gaap	Due To Officers Or Stockholders Current DueToOfficersOrStockholdersCurrent	100000000	USD
CY2011Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	54287000	USD
CY2011Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	6413000	USD
CY2011Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	27710000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	269000	USD
CY2011Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	7363000	USD
CY2011Q4	us-gaap	Due To Affiliate Current DueToAffiliateCurrent	6041000	USD
CY2012Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	158095000	USD
CY2012Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	148165000	USD
CY2012Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	58590000	USD
CY2012Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	22645000	USD
CY2012Q4	us-gaap	Interest Payable Current InterestPayableCurrent	90878000	USD
CY2012Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	6436000	USD
CY2012Q4	us-gaap	Litigation Reserve Current LitigationReserveCurrent	26782000	USD
CY2012Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	68961000	USD
CY2012Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	2989000	USD
CY2012Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	33628000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	10721000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	5118000	USD
CY2012Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	599380000	USD
CY2012	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	7536000	USD
CY2011	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	9930000	USD
CY2010	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	7457000	USD
CY2012	us-gaap	Gain Loss On Investments GainLossOnInvestments	55601000	USD
CY2011	us-gaap	Gain Loss On Investments GainLossOnInvestments	10010000	USD
CY2010	us-gaap	Gain Loss On Investments GainLossOnInvestments	-194000	USD
CY2012	nbr	Losses Gains On Sales Retirements And Involuntary Conversions Of Long Lived Assets LossesGainsOnSalesRetirementsAndInvoluntaryConversionsOfLongLivedAssets	-147488000	USD
CY2012	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-5382000	USD
CY2012	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-4787000	USD
CY2012	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	1281000	USD
CY2012	us-gaap	Gains Losses On Sales Of Other Assets GainsLossesOnSalesOfOtherAssets	-2090000	USD
CY2012	nbr	Losses Gains On Sales Retirements And Impairments Of Long Lived Assets And Other Expense Income Net LossesGainsOnSalesRetirementsAndImpairmentsOfLongLivedAssetsAndOtherExpenseIncomeNet	-136510000	USD
CY2012	nbr	Operating Revenues And Income Loss From Equity Method Of Investment OperatingRevenuesAndIncomeLossFromEquityMethodOfInvestment	6688253000	USD
CY2011	nbr	Operating Revenues And Income Loss From Equity Method Of Investment OperatingRevenuesAndIncomeLossFromEquityMethodOfInvestment	6116998000	USD
CY2010	nbr	Operating Revenues And Income Loss From Equity Method Of Investment OperatingRevenuesAndIncomeLossFromEquityMethodOfInvestment	4167750000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	918649000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	867363000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	648892000	USD
CY2012	us-gaap	Interest Expense InterestExpense	251552000	USD
CY2012	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	63137000	USD
CY2012	nbr	Subsidiary Preferred Stock Dividend SubsidiaryPreferredStockDividend	-3000000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-74400000	USD
CY2010Q4	us-gaap	Assets Assets	11646569000	USD
CY2012Q4	us-gaap	Long Term Investments LongTermInvestments	4269000	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2011	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	132388000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	13630000	USD
CY2012Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Noncontrolling Interest TemporaryEquityCarryingAmountAttributableToNoncontrollingInterest	69188000	USD
CY2012	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	949000	USD
CY2012	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	31944000	USD
CY2012	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	9529000	USD
CY2012	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	1325000	USD
CY2012	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1518628000	USD
CY2012	nbr	Proceeds From Sale Of Productive Assets And Proceeds From Insurance Settlement ProceedsFromSaleOfProductiveAssetsAndProceedsFromInsuranceSettlement	149801000	USD
CY2012	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	1612000	USD
CY2012	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3433000	USD
CY2010	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	5667000	USD
CY2012	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	710000000	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	-3625000	USD
CY2012	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	276258000	USD
CY2011	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	700000000	USD
CY2010	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	600000000	USD
CY2012	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	680000000	USD
CY2012	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2160000	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	-263000	USD
CY2012	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-2603000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-20257000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	-1694000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	-5391000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	-376000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	763000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	-5282000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-1777000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	60897000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	5356000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	278000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTax	-3036000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	4477000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	-185000	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest	723000	USD
CY2012	us-gaap	Sales Revenue Net SalesRevenueNet	6989573000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-301320000	USD
CY2012	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	4483320000	USD
CY2012	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	532568000	USD
CY2012	nbr	Depreciation And Amortization Continuing Operations DepreciationAndAmortizationContinuingOperations	1055517000	USD
CY2010	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	760962000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	924094000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1055517000	USD
CY2010	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	1878063000	USD
CY2011	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	2247735000	USD
CY2012	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	1433586000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1382623000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	110480000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	8712088000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	499010000	USD
CY2011Q4	nbr	Accrued Liabilities Current Excluding Income Taxes Payable AccruedLiabilitiesCurrentExcludingIncomeTaxesPayable	744483000	USD
CY2012Q4	nbr	Accrued Liabilities Current Excluding Income Taxes Payable AccruedLiabilitiesCurrentExcludingIncomeTaxesPayable	633008000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	518664000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	599335000	USD
CY2012Q4	us-gaap	Minority Interest MinorityInterest	12188000	USD
CY2011Q4	us-gaap	Long Term Investments LongTermInvestments	11124000	USD
CY2011	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	98072000	USD
CY2010	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	23213000	USD
CY2010	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	27372000	USD
CY2010	nbr	Settlement Of Call Options And Warrants Net SettlementOfCallOptionsAndWarrantsNet	1134000	USD
CY2012Q4	nbr	Goodwill Expected To Be Deductible For Tax Purposes GoodwillExpectedToBeDeductibleForTaxPurposes	11500000	USD
CY2011	nbr	Losses Gains On Sales Retirements And Involuntary Conversions Of Long Lived Assets LossesGainsOnSalesRetirementsAndInvoluntaryConversionsOfLongLivedAssets	-11155000	USD
CY2010	nbr	Losses Gains On Sales Retirements And Involuntary Conversions Of Long Lived Assets LossesGainsOnSalesRetirementsAndInvoluntaryConversionsOfLongLivedAssets	6430000	USD
CY2011	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	151000	USD
CY2010	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	7021000	USD
CY2011	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-11301000	USD
CY2010	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-6356000	USD
CY2011	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-5499000	USD
CY2010	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-18100000	USD
CY2011	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	2159000	USD
CY2010	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-119000	USD
CY2011	us-gaap	Gains Losses On Sales Of Other Assets GainsLossesOnSalesOfOtherAssets	-819000	USD
CY2010	us-gaap	Gains Losses On Sales Of Other Assets GainsLossesOnSalesOfOtherAssets	-2170000	USD
CY2012	us-gaap	Asset Impairment Charges AssetImpairmentCharges	290260000	USD
CY2011	us-gaap	Asset Impairment Charges AssetImpairmentCharges	198072000	USD
CY2010	us-gaap	Asset Impairment Charges AssetImpairmentCharges	61292000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	142994000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-110366000	USD
CY2012	nbr	Depreciation And Amortization Including Discontinued Operations DepreciationAndAmortizationIncludingDiscontinuedOperations	1055757000	USD
CY2012	nbr	Depletions Depletions	2573000	USD
CY2012	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	56925000	USD
CY2012	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-103000	USD
CY2012	us-gaap	Gain On Purchase Of Business GainOnPurchaseOfBusiness	48486000	USD
CY2012	nbr	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	-145147000	USD
CY2012	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	4294000	USD
CY2012	nbr	Pension Liability Amortization And Adjustments PensionLiabilityAmortizationAndAdjustments	1064000	USD
CY2012	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1908000	USD
CY2012	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	695000	USD
CY2012	nbr	Impairments And Other Charges ImpairmentsAndOtherCharges	311541000	USD
CY2012	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	51585000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	18312000	USD
CY2012	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-4819000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-200537000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-14447000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	42743000	USD
CY2012	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	38468000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-223199000	USD
CY2012	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-1488000	USD
CY2012	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	29857000	USD
CY2011	nbr	Realized Gain On The Sale Of Debt Securities And From Long Term Investments RealizedGainOnTheSaleOfDebtSecuritiesAndFromLongTermInvestments	18000000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	142618000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-98653000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	65818000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	129272000	USD
CY2011Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	94552000	USD
CY2011Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	70887000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	87190000	USD
CY2011Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	89535000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	14436262000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	13598711000	USD
CY2012	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	563500000	USD
CY2011	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	586400000	USD
CY2010	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	382500000	USD
CY2012	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	19400000	USD
CY2011	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	24000000	USD
CY2010	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	12400000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	890000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	3500000000	USD
CY2012Q1	nbr	Operating Revenues And Income Loss From Equity Method Of Investment OperatingRevenuesAndIncomeLossFromEquityMethodOfInvestment	1821757000	USD
CY2012Q2	nbr	Operating Revenues And Income Loss From Equity Method Of Investment OperatingRevenuesAndIncomeLossFromEquityMethodOfInvestment	1602797000	USD
CY2012Q3	nbr	Operating Revenues And Income Loss From Equity Method Of Investment OperatingRevenuesAndIncomeLossFromEquityMethodOfInvestment	1666892000	USD
CY2012Q4	nbr	Operating Revenues And Income Loss From Equity Method Of Investment OperatingRevenuesAndIncomeLossFromEquityMethodOfInvestment	1596807000	USD
CY2011Q1	nbr	Operating Revenues And Income Loss From Equity Method Of Investment OperatingRevenuesAndIncomeLossFromEquityMethodOfInvestment	1389842000	USD
CY2011Q2	nbr	Operating Revenues And Income Loss From Equity Method Of Investment OperatingRevenuesAndIncomeLossFromEquityMethodOfInvestment	1352950000	USD
CY2011Q3	nbr	Operating Revenues And Income Loss From Equity Method Of Investment OperatingRevenuesAndIncomeLossFromEquityMethodOfInvestment	1642227000	USD
CY2011Q4	nbr	Operating Revenues And Income Loss From Equity Method Of Investment OperatingRevenuesAndIncomeLossFromEquityMethodOfInvestment	1731979000	USD
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-8795000	USD
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	24690000	USD
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	10826000	USD
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-101121000	USD
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-12396000	USD
CY2011Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	708000	USD
CY2011Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1400000	USD
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-12226000	USD
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-193985000	USD
CY2012Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-267000	USD
CY2012Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1174000	USD
CY2012Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	988000	USD
CY2012Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1074000	USD
CY2011Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-669000	USD
CY2011Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-394000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	134090000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	-72789000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	75656000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	27077000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	82825000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	192448000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	74256000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	-105850000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.50
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.34
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.22
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.44
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.33
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.25
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.30
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.31
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.04
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.09
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.04
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.35
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.04
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.42
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.04
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.68
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.46
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.25
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.26
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.09
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.67
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.26
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.37
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.49
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.34
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.22
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.44
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.33
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.24
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.30
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.30
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.03
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.09
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.04
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.35
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.05
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.41
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.05
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.66
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.46
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.25
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.09
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.65
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.25
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.36
CY2012Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-68700000	USD
CY2012Q2	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-134300000	USD
CY2012Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-99500000	USD
CY2012Q4	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1200000	USD
CY2011Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	16300000	USD
CY2011Q2	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	9300000	USD
CY2011Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	33700000	USD
CY2011Q4	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-2700000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	83950000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	68848000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	81174000	USD
CY2009Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	69048000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1826597000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	922000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1850000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1026000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	16372000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	11748000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	17060000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1174000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	11082000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	4709000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1018000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	14842000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1251000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	190848000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	178270000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-82723000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	83835000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	309499000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	376293000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	274683000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	487769000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	293570000	USD
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	27649000	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-137847000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	25802000	USD
CY2011	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	43732000	USD
CY2010	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	54779000	USD
CY2012	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	82950000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	38321000	USD
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5859000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	34242000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	41540000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	97114000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-78556000	USD
CY2011	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	4413000	USD
CY2010	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	13607000	USD
CY2012	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-18479000	USD
CY2012	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-48188000	USD
CY2011	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	112094000	USD
CY2010	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	18686000	USD
CY2012	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	33730000	USD
CY2011	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-6450000	USD
CY2010	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	2407000	USD
CY2011	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-258000	USD
CY2010	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	40000	USD
CY2012	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	26176000	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	11948000	USD
CY2010	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	8808000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	20910000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	25271000	USD
CY2010	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	7009000	USD
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.119	pure
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.292	pure
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	2009318000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	32200000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	29337000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	110563000	USD
CY2010	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.126	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0149	pure
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	25937000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	33523000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	90297000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	10873000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	24598000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	104699000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	114043000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	2115592000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	2296393000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1520852000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1485540000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	594740000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	810853000	USD
CY2012Q4	nbr	Deferred Tax Liabilities Depreciation Amortization And Depletion For Tax In Excess Of Book Expense DeferredTaxLiabilitiesDepreciationAmortizationAndDepletionForTaxInExcessOfBookExpense	945888000	USD
CY2011Q4	nbr	Deferred Tax Liabilities Depreciation Amortization And Depletion For Tax In Excess Of Book Expense DeferredTaxLiabilitiesDepreciationAmortizationAndDepletionForTaxInExcessOfBookExpense	1317256000	USD
CY2012Q4	nbr	Deferred Tax Liabilities Variable Interest Investments DeferredTaxLiabilitiesVariableInterestInvestments	144020000	USD
CY2011Q4	nbr	Deferred Tax Liabilities Variable Interest Investments DeferredTaxLiabilitiesVariableInterestInvestments	116005000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	34822000	USD
CY2012Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1089908000	USD
CY2011Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1468083000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	495168000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	657230000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	110480000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	127874000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	4408000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	13090000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	42800000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	28200000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	42900000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	2700000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	4600000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	5100000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	1450000000	USD
CY2012Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	1450000000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	6.24
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	6.62
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0063	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0065	pure
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.00	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.00	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.00	pure
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.5574	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.5109	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.4144	pure
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	100000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	200000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	100000	USD
CY2011Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	25000000	shares
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	25000000	shares
CY2012Q4	us-gaap	Assets Held For Sale Current AssetsHeldForSaleCurrent	383857000	USD
CY2012Q4	us-gaap	Other Assets Current OtherAssetsCurrent	226560000	USD
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	4851000	shares
CY2012	us-gaap	Costs And Expenses CostsAndExpenses	6476707000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	860000	USD
CY2011Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2012Q4	nbr	Number Of Line Of Credit Facility NumberOfLineOfCreditFacility	9	creditfacilty
CY2012Q4	us-gaap	Assets Current AssetsCurrent	3132857000	USD
CY2012Q4	us-gaap	Long Term Investments And Receivables Net LongTermInvestmentsAndReceivablesNet	4269000	USD
CY2012Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	61690000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	272792000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	319000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2337244000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	431595000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	4120398000	USD
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	944627000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	9.40
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y
CY2011	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y
CY2010	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P4Y
CY2012Q4	nbr	Operating Loss Carryforward OperatingLossCarryforward	1178770000	USD
CY2012Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	6151428000	USD
CY2012Q4	nbr	Operating Loss Non Expiring Carryforwards OperatingLossNonExpiringCarryforwards	4972658000	USD
CY2010Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	800000000	shares
CY2010Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2010Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	315034000	shares
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-13050000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	3438000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-13331000	USD
CY2012Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	25967000	USD
CY2012	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	50355000	USD
CY2012Q4	us-gaap	Equity Method Investments Fair Value Disclosure EquityMethodInvestmentsFairValueDisclosure	4300000	USD
CY2011Q4	us-gaap	Equity Method Investments Fair Value Disclosure EquityMethodInvestmentsFairValueDisclosure	5900000	USD
CY2012	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	100000	USD
CY2011	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	900000	USD
CY2010	us-gaap	Related Party Transaction Expenses From Transactions With Related Party RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty	3400000	USD
CY2012Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	68700000	USD
CY2011Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	110700000	USD
CY2012Q4	us-gaap	Accounts Payable Related Parties Current AccountsPayableRelatedPartiesCurrent	3200000	USD
CY2011Q4	us-gaap	Accounts Payable Related Parties Current AccountsPayableRelatedPartiesCurrent	46100000	USD
CY2012Q4	us-gaap	Due To Related Parties Noncurrent DueToRelatedPartiesNoncurrent	800000	USD
CY2012Q4	nbr	Guarantee Obligations Maximum Exposure In Year Two GuaranteeObligationsMaximumExposureInYearTwo	105000	USD
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	5366000	shares
CY2010	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	808000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-20788000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	49346000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	223751000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	144849000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-243127000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	274365000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	222891000	USD
CY2010Q4	us-gaap	Business Acquisition Equity Interest Issued Or Issuable Value Assigned BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned	69188000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	35500000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	144041000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	25609000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	16001000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	7646000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	5307000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	2986000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	9527000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	67076000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	36300000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	26700000	USD
CY2012Q4	nbr	Transportation Future Minimum Payments Due Current TransportationFutureMinimumPaymentsDueCurrent	67251000	USD
CY2012Q4	nbr	Transportation Future Minimum Payments Due In Two Years TransportationFutureMinimumPaymentsDueInTwoYears	65535000	USD
CY2012Q4	nbr	Transportation Future Minimum Payments Due In Three Years TransportationFutureMinimumPaymentsDueInThreeYears	63976000	USD
CY2012Q4	nbr	Transportation Future Minimum Payments Due In Four Years TransportationFutureMinimumPaymentsDueInFourYears	47106000	USD
CY2012Q4	nbr	Transportation Future Minimum Payments Due In Five Years TransportationFutureMinimumPaymentsDueInFiveYears	27949000	USD
CY2012Q4	nbr	Transportation Future Minimum Payments Due Thereafter TransportationFutureMinimumPaymentsDueThereafter	67769000	USD
CY2012Q4	nbr	Transportation Future Minimum Payments Due TransportationFutureMinimumPaymentsDue	339586000	USD
CY2012Q4	nbr	Salary And Bonus Future Minimum Payments Due Current SalaryAndBonusFutureMinimumPaymentsDueCurrent	5830000	USD
CY2012Q4	nbr	Salary And Bonus Future Minimum Payments Due In Two Years SalaryAndBonusFutureMinimumPaymentsDueInTwoYears	2651000	USD
CY2012Q4	nbr	Salary And Bonus Future Minimum Payments Due In Three Years SalaryAndBonusFutureMinimumPaymentsDueInThreeYears	525000	USD
CY2012Q4	nbr	Salary And Bonus Future Minimum Payments Due SalaryAndBonusFutureMinimumPaymentsDue	9006000	USD
CY2012Q4	nbr	Employers Liability Claims Subject To Per Occurrence Deductible EmployersLiabilityClaimsSubjectToPerOccurrenceDeductible	2000000	USD
CY2012Q4	nbr	General Liability Claims Subject To Per Occurrence Deductible GeneralLiabilityClaimsSubjectToPerOccurrenceDeductible	5000000	USD
CY2012Q4	nbr	Deductions In Land Rigs And For Offshore Rigs DeductionsInLandRigsAndForOffshoreRigs	5000000	USD
CY2012Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	171200000	USD
CY2011Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	157800000	USD
CY2012Q4	nbr	Self Insurance Recoveries Or Receivables SelfInsuranceRecoveriesOrReceivables	24600000	USD
CY2011Q4	nbr	Self Insurance Recoveries Or Receivables SelfInsuranceRecoveriesOrReceivables	18700000	USD
CY2012	us-gaap	Proceeds From Divestiture Of Businesses And Interests In Affiliates ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates	159529000	USD
CY2012	nbr	Realized Gain On Short Term And Long Term Investments RealizedGainOnShortTermAndLongTermInvestments	14500000	USD
CY2012	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	41100000	USD
CY2012	us-gaap	Income Taxes Paid IncomeTaxesPaid	85044000	USD
CY2011	us-gaap	Income Taxes Paid IncomeTaxesPaid	53759000	USD
CY2010	us-gaap	Income Taxes Paid IncomeTaxesPaid	58574000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	250045000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	208212000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	180731000	USD
CY2011	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	80585000	USD
CY2010	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	796399000	USD
CY2011	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	8000000	USD
CY2010	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	339992000	USD
CY2011	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	10471000	USD
CY2010	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	332528000	USD
CY2011	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	65000000	USD
CY2010	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	734675000	USD
CY2011	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	9541000	USD
CY2010	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	1045000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	7815419000	USD
CY2010	nbr	Realized Gain On The Sale Of Debt Securities And From Long Term Investments RealizedGainOnTheSaleOfDebtSecuritiesAndFromLongTermInvestments	4200000	USD
CY2012	nbr	Minimum Number Of Countries In Which Oil Gas And Geothermal Land Drilling Operations Conducted MinimumNumberOfCountriesInWhichOilGasAndGeothermalLandDrillingOperationsConducted	20	item
CY2010	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	4400000	USD
CY2012	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	17400000	USD
CY2012	nbr	Assets Held For Sale Number Of Wells Suspended AssetsHeldForSaleNumberOfWellsSuspended	7	item
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	0	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	0	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	4928781000	USD
CY2011	us-gaap	Gain Loss On Sale Of Oil And Gas Property GainLossOnSaleOfOilAndGasProperty	13114000	USD
CY2012	us-gaap	Use Of Estimates UseOfEstimates	<div style='font-size:10.0pt;FONT-FAMILY: Times New Roman;'> <p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2">The preparation of financial statements in conformity with 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:</font></p> <p style="TEXT-INDENT: 0.25in; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: 16.55pt; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><b><font style="FONT-SIZE: 10pt; FONT-WEIGHT: bold" size="2">      </font></b> <font style="FONT-SIZE: 10pt" size="2">depreciation of property, plant and equipment;</font></p> <p style="TEXT-INDENT: 16.55pt; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: 16.55pt; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 10pt" size="2">       impairment of long-lived assets;</font></p> <p style="TEXT-INDENT: 16.55pt; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: 16.65pt; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 10pt" size="2">       impairment of goodwill and intangible assets;</font></p> <p style="TEXT-INDENT: 16.65pt; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: 16.55pt; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 10pt" size="2">       income taxes;</font></p> <p style="TEXT-INDENT: 16.55pt; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: 16.55pt; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 10pt" size="2">       litigation and self-insurance reserves; and</font></p> <p style="TEXT-INDENT: 16.55pt; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Times New Roman; FONT-SIZE: 10pt" size="2"> </font></p> <p style="TEXT-INDENT: 16.65pt; MARGIN: 0in 0in 0pt"><font style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt" size="2">·</font><font style="FONT-SIZE: 10pt" size="2">       fair value of assets acquired and liabilities assumed.</font></p></div>
CY2012Q4	nbr	Goodwill Impairment Test Second Step Reporting Units GoodwillImpairmentTestSecondStepReportingUnits	2	item
CY2012	nbr	Stock Issued During Period Shares Issued For Charitable Contributions StockIssuedDuringPeriodSharesIssuedForCharitableContributions	1000000	shares
CY2011Q4	nbr	Accumulated Depreciation Depletion And Amortization Of Oil And Gas Properties AccumulatedDepreciationDepletionAndAmortizationOfOilAndGasProperties	39984000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	0	USD
CY2012Q4	nbr	Percentage Of Excess Of Fair Value Of Operating Segment Over Carrying Value PercentageOfExcessOfFairValueOfOperatingSegmentOverCarryingValue	0.10	pure
CY2012	nbr	Percentage Of Growth Rate Used To Calculate Terminal Value Of Each Reporting Unit PercentageOfGrowthRateUsedToCalculateTerminalValueOfEachReportingUnit	0.03	pure
CY2011	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	800000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	5724174000	USD
CY2012	nbr	Minimum Period Of Operating Lease MinimumPeriodOfOperatingLease	P30D
CY2011	us-gaap	Proceeds From Divestiture Of Businesses And Interests In Affiliates ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates	142984000	USD
CY2011	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	218400000	USD
CY2010	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	271600000	USD
CY2012	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	164000000	USD
CY2012	nbr	Share Based Compensation Cashless Exercise ShareBasedCompensationCashlessExercise	21000000	USD

Files In Submission

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2012 Q4 Form 10-K Financial Statement

#000110465913016655 Filed on March 01, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NBR NABORS INDUSTRIES LTD Stock $nbr

2012 Q4 Form 10-K Financial Statement

#000110465913016655 Filed on March 01, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

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NABORS INDUSTRIES LTD Stock $nbr