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No authoritative reference available. false 5 Reimbursable revenues 2 us-gaap_ReimbursementRevenue 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 6300000 6.3 false false false 2 false true false false 5100000 5.1 false false false 3 false true false false 11700000 11.7 false false false 4 false true false false 17700000 17.7 false false false xbrli:monetaryItemType monetary Repayment received for expenses incurred on behalf of the client or customer, other than those reimbursements received by landlords from tenants. 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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 verboselabel 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 Operating costs, excluding depreciation and amortization 2 pde_OperatingCostsExcludingDepreciationAndAmortization pde false debit duration Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly... false false false false false false false false false false false verboselabel false 1 false true false false 217900000 217.9 false false false 2 false true false false 205200000 205.2 false false false 3 false true false false 418800000 418.8 false false false 4 false true false false 405400000 405.4 false false false xbrli:monetaryItemType monetary Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense. Also excludes Depreciation and Amortization--The current period expense charged against earnings on long-lived, physical assets used in the normal conduct of business and not intended for resale to allocate or recognize the cost of assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset. Examples include buildings, production equipment and customer lists. 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No authoritative reference available. false 10 Depreciation and amortization 2 us-gaap_CostOfServicesDepreciationAndAmortization us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 44700000 44.7 false false false 2 false true false false 39300000 39.3 false false false 3 false true false false 86800000 86.8 false false false 4 false true false false 78800000 78.8 false false false xbrli:monetaryItemType monetary Depreciation of property, plant and equipment directly related to services rendered by an entity during the reporting period. 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No authoritative reference available. false 12 Gain on sales of assets, net 2 us-gaap_GainLossOnDispositionOfAssets us-gaap true credit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false -200000 -0.2 false false false 2 false false false false 0 0 false false false 3 false true false false -500000 -0.5 false false false 4 false true false false -500000 -0.5 false false false xbrli:monetaryItemType monetary The gains and losses included in earnings resulting from the sale or disposal of tangible assets. 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No authoritative reference available. true 14 EARNINGS 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 verboselabel false 1 false true false false 57300000 57.3 false false false 2 false true false false 164300000 164.3 false false false 3 false true false false 143500000 143.5 false false false 4 false true false false 336700000 336.7 false false false xbrli:monetaryItemType monetary The net result for the period of deducting operating expenses from operating revenues. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 9 -Article 5 true 19 INCOME FROM CONTINUING OPERATIONS 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 verboselabel false 1 false true false false 60800000 60.8 false false false 2 false true false false 161300000 161.3 false false false 3 false true false false 156200000 156.2 false false false 4 false true false false 338100000 338.1 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 20 INCOME TAXES 1 us-gaap_IncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false -3100000 -3.1 false false false 2 false true false false -26600000 -26.6 false false false 3 false true false false -17800000 -17.8 false false false 4 false true false false -54500000 -54.5 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. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 false 22 Loss from discontinued operations 1 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax 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 -200000 -0.2 false false false 2 false true false false -10600000 -10.6 false false false 3 false true false false -7900000 -7.9 false false false 4 false true false false -600000 -0.6 false false false xbrli:monetaryItemType monetary This element represents the overall income (loss) from a disposal group that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items and the cumulative effect of accounting changes before deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal. 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If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. 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