2.2.0.7 false CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) 002000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) true false In Thousands, except Per Share data false false 1 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ false 2 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ false 3 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ false 4 USD false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ 3 REVENUES: 1 us-gaap_RevenuesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 4 Drilling services (Note 10) 2 us-gaap_RevenueOilAndGasServices us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 true true false false 328277000 328277 false false false 2 true true false false 320807000 320807 false false false 3 true true false false 659261000 659261 false false false 4 true true false false 701177000 701177 false false false xbrli:monetaryItemType monetary Revenue from oil and gas-related services including well services (such as drilling, rigs and analytic evaluations), transportation, and other supporting contractor services, during the reporting period. No authoritative reference available. false 5 Manufacturing sales and services 2 rdc_ManufacturingSalesAndServices rdc false credit duration Aggregate revenue recognized during the period derived from manufacturing goods sold and services rendered. false false false false false false false false false false false terselabel false 1 false true false false 161759000 161759 false false false 2 false true false false 161353000 161353 false false false 3 false true false false 263180000 263180 false false false 4 false true false false 275791000 275791 false false false xbrli:monetaryItemType monetary Aggregate revenue recognized during the period derived from manufacturing goods sold and services rendered. No authoritative reference available. false 6 Total revenues 2 us-gaap_Revenues us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 490036000 490036 false false false 2 false true false false 482160000 482160 false false false 3 false true false false 922441000 922441 false false false 4 false true false false 976968000 976968 false false false xbrli:monetaryItemType monetary Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 true 7 COSTS AND EXPENSES: 1 us-gaap_CostsAndExpensesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 8 Drilling services (excluding items below) 2 rdc_DrillingOperations rdc false debit duration The aggregate costs related to drilling services rendered during the reporting period. This excludes costs incurred during... false false false false false false false false false false false terselabel false 1 false true false false 139008000 139008 false false false 2 false true false false 136840000 136840 false false false 3 false true false false 275555000 275555 false false false 4 false true false false 282221000 282221 false false false xbrli:monetaryItemType monetary The aggregate costs related to drilling services rendered during the reporting period. This excludes costs incurred during the reporting period related to depreciation, allocated general and administrative expenses, gains and losses on equipment sales, and other certain material charges and credits attributable to drilling services. No authoritative reference available. false 9 Manufacturing sales and services (excluding items below) 2 rdc_ManufacturingOperationsExcludingItemsShownBelow rdc false debit duration The aggregate costs related to manufacturing sales and services rendered during the reporting period. This excludes costs... false false false false false false false false false false false terselabel false 1 false true false false 138102000 138102 false false false 2 false true false false 147388000 147388 false false false 3 false true false false 222672000 222672 false false false 4 false true false false 238196000 238196 false false false xbrli:monetaryItemType monetary The aggregate costs related to manufacturing sales and services rendered during the reporting period. This excludes costs incurred during the reporting period related to depreciation, allocated general and administrative expenses, gains and losses on equipment sales, and other certain material charges and credits attributable to manufacturing activities. No authoritative reference available. false 10 Depreciation and amortization 2 rdc_DepreciationAndAmortizationForCurrentPeriod rdc false debit duration Aggregate depreciation, depletion and amortization expense in the current period for the cost of tangible assets, intangible... false false false false false false false false false false false terselabel false 1 false true false false 46458000 46458 false false false 2 false true false false 42609000 42609 false false false 3 false true false false 91950000 91950 false false false 4 false true false false 83108000 83108 false false false xbrli:monetaryItemType monetary Aggregate depreciation, depletion and amortization expense in the current period for the cost of tangible assets, intangible assets, or depleting assets directly related to goods produced and sold during the reporting period and Aggregate depreciation, depletion and amortization expense in the current period for the cost of tangible assets, intangible assets, or depleting assets directly related to goods produced and sold during the reporting period. No authoritative reference available. false 11 Selling, general and administrative 2 us-gaap_SellingGeneralAndAdministrativeExpense us-gaap true debit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 36077000 36077 false false false 2 false true false false 24720000 24720 false false false 3 false true false false 61874000 61874 false false false 4 false true false false 49296000 49296 false false false xbrli:monetaryItemType monetary The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 4 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 4 -Paragraph 5A false 12 Loss (gain) on disposals of property and equipment 2 us-gaap_GainLossOnSaleOfPropertyPlantEquipment us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 34000 34 false false false 2 false true false false 60000 60 false false false 3 false true false false -95000 -95 false false false 4 false true false false -4641000 -4641 false false false xbrli:monetaryItemType monetary The difference between the sale price or salvage price and the book value of a property, plant, and equipment asset that was sold or retired during the reporting period. This element refers to the gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 13 Material charge - manufacturing inventories (Note 10) 2 us-gaap_OtherCostAndExpenseOperating us-gaap true debit duration No definition available. false false false false false false false false false false false label false 1 false true false false 0 0 false false false 2 false true false false 0 0 false false false 3 false true false false 42024000 42024 false false false 4 false true false false 0 0 false false false xbrli:monetaryItemType monetary The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 3 -Article 5 false 14 Total costs and expenses 2 us-gaap_CostsAndExpenses us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 359679000 359679 false false false 2 false true false false 351617000 351617 false false false 3 false true false false 693980000 693980 false false false 4 false true false false 648180000 648180 false false false xbrli:monetaryItemType monetary Total costs of sales and operating expenses for the period. No authoritative reference available. true 15 INCOME FROM OPERATIONS 1 us-gaap_OperatingIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 130357000 130357 false false false 2 false true false false 130543000 130543 false false false 3 false true false false 228461000 228461 false false false 4 false true false false 328788000 328788 false false false xbrli:monetaryItemType monetary The net result for the period of deducting operating expenses from operating revenues. No authoritative reference available. true 16 OTHER INCOME (EXPENSE): 1 rdc_OtherIncomeAbstract rdc false na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 17 Interest expense 2 us-gaap_InterestExpense us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -12903000 -12903 false false false 2 false true false false -2457000 -2457 false false false 3 false true false false -25873000 -25873 false false false 4 false true false false -5600000 -5600 false false false xbrli:monetaryItemType monetary The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 9 -Subsection II Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 false 18 Interest capitalized 2 us-gaap_InterestCostsCapitalized us-gaap true debit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 7652000 7652 false false false 2 false true false false 2343000 2343 false false false 3 false true false false 14943000 14943 false false false 4 false true false false 5107000 5107 false false false xbrli:monetaryItemType monetary The amount of interest that was capitalized during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 -Subparagraph b false 19 Interest income 2 us-gaap_InvestmentIncomeInterest us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 253000 253 false false false 2 false true false false 201000 201 false false false 3 false true false false 434000 434 false false false 4 false true false false 532000 532 false false false xbrli:monetaryItemType monetary Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 14 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 5 false 20 Other - net 2 us-gaap_OtherNonoperatingIncomeExpense us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false -1443000 -1443 false false false 2 false true false false 2422000 2422 false false false 3 false true false false 102000 102 false false false 4 false true false false 3836000 3836 false false false xbrli:monetaryItemType monetary The net amount of other nonoperating income and expense, which does not qualify for separate disclosure on the income statement under materiality guidelines. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 false 21 Total other income (expense) - net 2 us-gaap_NonoperatingIncomeExpense us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false -6441000 -6441 false false false 2 false true false false 2509000 2509 false false false 3 false true false false -10394000 -10394 false false false 4 false true false false 3875000 3875 false false false xbrli:monetaryItemType monetary The aggregate amount of income (expense) from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 5 true 22 INCOME BEFORE INCOME TAXES 1 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 123916000 123916 false false false 2 false true false false 133052000 133052 false false false 3 false true false false 218067000 218067 false false false 4 false true false false 332663000 332663 false false false xbrli:monetaryItemType monetary Sum of operating profit and nonoperating income (expense) before income (loss) from equity method investments, income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1(i) -Article 4 false 23 Provision for income taxes 1 us-gaap_IncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 33000000 33000 false false false 2 false true false false 36469000 36469 false false false 3 false true false false 62528000 62528 false false false 4 false true false false 104380000 104380 false false false xbrli:monetaryItemType monetary The sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a, b false 24 NET INCOME 1 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 true true false false 90916000 90916 false false false 2 true true false false 96583000 96583 false false false 3 true true false false 155539000 155539 false false false 4 true true false false 228283000 228283 false false false xbrli:monetaryItemType monetary The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 true 25 PER SHARE AMOUNTS: 1 rdc_EarningsPerShareBasicAndDilutedAbstract rdc false na duration No definition available. false false false false false true false false false false false terselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 26 Net income - basic 2 us-gaap_EarningsPerShareBasic us-gaap true na duration No definition available. false false false false false false false false false false false terselabel true 1 true true false false 0.80 0.80 false false false 2 true true false false 0.85 0.85 false false false 3 true true false false 1.38 1.38 false false false 4 true true false false 2.01 2.01 false false false us-types:perShareItemType decimal The amount of net income or loss for the period per each share of common stock outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 36, 37, 38 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 false 27 Net income - diluted 2 us-gaap_EarningsPerShareDiluted us-gaap true na duration No definition available. false false false false false false false false false false false terselabel true 1 true true false false 0.79 0.79 false false false 2 true true false false 0.85 0.85 false false false 3 true true false false 1.36 1.36 false false false 4 true true false false 2.01 2.01 false false false us-types:perShareItemType decimal The amount of net income or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period. 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