1.0.0.3 false CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Thousands false 1 $ 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 $ 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 5 Net income 3 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 306675000 306675 false false 2 true true 333347000 333347 false false No definition available. No authoritative reference available. false 6 Adjustments to reconcile net income to net cash provided by operations: 3 us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 7 Depreciation and amortization 4 us-gaap_DepreciationDepletionAndAmortization us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 126855000 126855 false false 2 false true 102782000 102782 false false No definition available. No authoritative reference available. false 8 Deferred income taxes 4 us-gaap_DeferredIncomeTaxExpenseBenefit us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 70542000 70542 false false 2 false true 38004000 38004 false false No definition available. No authoritative reference available. false 9 Provision for pension and postretirement benefits 4 us-gaap_PensionAndOtherPostretirementBenefitContributions us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 32148000 32148 false false 2 false true 24321000 24321 false false No definition available. No authoritative reference available. false 10 Stock-based compensation expense 4 us-gaap_ShareBasedCompensation us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 9571000 9571 false false 2 false true 10330000 10330 false false No definition available. No authoritative reference available. false 11 Postretirement benefit claims paid 4 us-gaap_OtherPostretirementBenefitsPayments us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -2689000 -2689 false false 2 false true -2084000 -2084 false false No definition available. No authoritative reference available. false 12 Loss (gain) on disposals of property and equipment 4 us-gaap_GainLossOnSaleOfPropertyPlantEquipment us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -4336000 -4336 false false 2 false true -28329000 -28329 false false No definition available. No authoritative reference available. false 13 Estimated net benefits from income tax claims 4 us-gaap_IncomeTaxCreditsAndAdjustments us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -25057000 -25057 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 14 Contributions to pension plans 4 us-gaap_PensionContributions us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -34487000 -34487 false false 2 false true -23576000 -23576 false false No definition available. No authoritative reference available. false 15 Changes in current assets and liabilities: 3 rdc_ChangesInCurrentAssetsAndLiabilities rdc false na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 16 Receivables - trade and other 4 rdc_ReceivablesTradeAndOtherAsPresentedInStatementOfCashFlows rdc false debit duration monetary Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is... false false false false false false false false false 1 false true 129815000 129815 false false 2 false true 61062000 61062 false false Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collectio; and Carrying amounts due as of the balance sheet date from parties or arising from transactions not otherwise specified in the taxonomy. No authoritative reference available. false 17 Inventories 4 us-gaap_IncreaseDecreaseInInventories us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 65578000 65578 false false 2 false true -143848000 -143848 false false No definition available. No authoritative reference available. false 18 Prepaid expenses and other current assets 4 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -24729000 -24729 false false 2 false true -4503000 -4503 false false No definition available. No authoritative reference available. false 19 Accounts payable 4 us-gaap_IncreaseDecreaseInAccountsPayableTrade us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -130778000 -130778 false false 2 false true 72091000 72091 false false No definition available. No authoritative reference available. false 20 Accrued income taxes 4 us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -56838000 -56838 false false 2 false true -18369000 -18369 false false No definition available. No authoritative reference available. false 21 Deferred revenues 4 us-gaap_IncreaseDecreaseInDeferredRevenue us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -17333000 -17333 false false 2 false true 66625000 66625 false false No definition available. No authoritative reference available. false 22 Billings in excess of costs and estimated profits on uncompleted contracts 4 us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -16435000 -16435 false false 2 false true -59701000 -59701 false false No definition available. No authoritative reference available. false 23 Other current liabilities 4 us-gaap_IncreaseDecreaseInOtherAccruedLiabilities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -11348000 -11348 false false 2 false true 8988000 8988 false false No definition available. No authoritative reference available. false 24 Net changes in other noncurrent assets and liabilities 3 us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -8191000 -8191 false false 2 false true -3556000 -3556 false false No definition available. No authoritative reference available. false 25 Net cash provided by operations 3 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 408963000 408963 false false 2 false true 433584000 433584 false false No definition available. No authoritative reference available. true 26 Net cash used in investing activities: 3 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 27 Capital expenditures 4 us-gaap_PaymentsToAcquireProductiveAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -393223000 -393223 false false 2 false true -618541000 -618541 false false No definition available. No authoritative reference available. false 28 Proceeds from disposals of property, plant and equipment 4 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 5689000 5689 false false 2 false true 53455000 53455 false false No definition available. No authoritative reference available. false 29 Change in restricted cash balance 4 us-gaap_IncreaseDecreaseInRestrictedCashForOperatingActivities us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 50000000 50000 false false No definition available. No authoritative reference available. false 30 Net cash used in investing activities 3 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -387534000 -387534 false false 2 false true -515086000 -515086 false false No definition available. No authoritative reference available. true 31 Net cash used in financing activities: 3 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false No definition available. false 32 Proceeds from borrowings, net of issue costs 4 rdc_ProceedsFromBorrowingsNetOfIssueCosts rdc false na duration monetary The net cash inflow in aggregate debt due to proceeds from additional borrowings, net of the cash outflow paid to third... false false false false false false false false false 1 false true 491729000 491729 false false 2 false true 80000000 80000 false false The net cash inflow in aggregate debt due to proceeds from additional borrowings, net of the cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated debt. No authoritative reference available. false 33 Repayments of borrowings 4 rdc_RepaymentsOfBorrowings rdc false debit duration monetary The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer... false false false false false false false false false 1 false true -51168000 -51168 false false 2 false true -131168000 -131168 false false The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer and The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. No authoritative reference available. false 34 Payment of cash dividends 4 us-gaap_PaymentsOfDividends us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true -33713000 -33713 false false No definition available. No authoritative reference available. false 35 Proceeds from stock option and convertible debenture plans and other 4 us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 251000 251 false false 2 false true 32646000 32646 false false No definition available. No authoritative reference available. false 36 Excess tax benefits from stock-based compensation 4 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -3562000 -3562 false false 2 false true 1999000 1999 false false No definition available. No authoritative reference available. false 37 Net cash provided by (used in) financing activities 3 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 437250000 437250 false false 2 false true -50236000 -50236 false false No definition available. No authoritative reference available. true 38 INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 3 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 458679000 458679 false false 2 false true -131738000 -131738 false false No definition available. No authoritative reference available. false 39 CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD 3 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false true false false 1 false true 222428000 222428 false false 2 false true 284458000 284458 false false No definition available. No authoritative reference available. false 40 CASH AND CASH EQUIVALENTS, END OF PERIOD 3 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false true false 1 true true 681107000 681107 false false 2 true true 152720000 152720 false false No definition available. No authoritative reference available. false false 2 36 false Thousands UnKnown UnKnown false true