1.0.0.3 false Condensed Consolidated Statements of Cash Flows (USD $) In Millions false 1 $ false false Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 Unit1 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 2 $ false false Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 Unit1 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 7 Operating Activities 5 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract 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 8 Net income 6 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 423500000 423.5 false false 2 true true 571600000 571.6 false false No definition available. No authoritative reference available. false 9 Adjustments to reconcile net income to net cash provided by operating activities of continuing operations: 6 us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract 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 10 Depreciation expense 7 us-gaap_CostOfServicesDepreciation us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 96500000 96.5 false false 2 false true 92400000 92.4 false false No definition available. No authoritative reference available. false 11 Deferred income tax expense 7 us-gaap_DeferredIncomeTaxExpenseBenefit us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 17800000 17.8 false false 2 false true 6400000 6.4 false false No definition available. No authoritative reference available. false 12 Share-based compensation expense 7 us-gaap_ShareBasedCompensation us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 17000000 17.0 false false 2 false true 13300000 13.3 false false No definition available. No authoritative reference available. false 13 Amortization expense 7 us-gaap_OtherAmortizationOfDeferredCharges us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 15900000 15.9 false false 2 false true 16700000 16.7 false false No definition available. No authoritative reference available. false 14 Loss (income) from discontinued operations, net 7 us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 16800000 16.8 false false 2 false true -14700000 -14.7 false false No definition available. No authoritative reference available. false 15 Loss on disposal of discontinued operations, net 7 us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 11800000 11.8 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 16 Other 7 us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 1500000 1.5 false false 2 false true -3800000 -3.8 false false No definition available. No authoritative reference available. false 17 Changes in operating assets and liabilities: 7 us-gaap_IncreaseDecreaseInOperatingCapitalAbstract 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 18 Decrease (increase) in accounts receivable 8 us-gaap_IncreaseDecreaseInReceivables us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 35700000 35.7 false false 2 false true -53300000 -53.3 false false No definition available. No authoritative reference available. false 19 Decrease (increase) in investments designated as trading securities 8 us-gaap_IncreaseDecreaseInTradingSecurities us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 2600000 2.6 false false 2 false true -73300000 -73.3 false false No definition available. No authoritative reference available. false 20 (Increase) decrease in other assets 8 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -52100000 -52.1 false false 2 false true 8400000 8.4 false false No definition available. No authoritative reference available. false 21 Decrease in accounts payable and accrued and other liabilities 8 us-gaap_IncreaseDecreaseInOperatingLiabilities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -800000 -0.8 false false 2 false true -167300000 -167.3 false false No definition available. No authoritative reference available. true 22 Net cash provided by operating activities of continuing operations 6 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 586200000 586.2 false false 2 false true 396400000 396.4 false false No definition available. No authoritative reference available. true 23 Investing Activities 4 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 24 Additions to property and equipment 5 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -471500000 -471.5 false false 2 false true -414700000 -414.7 false false No definition available. No authoritative reference available. false 25 Proceeds from disposal of discontinued operations 5 us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 4900000 4.9 false false 2 false true 0 0 false false No definition available. No authoritative reference available. false 26 Proceeds from disposition of assets 5 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 1700000 1.7 false false 2 false true 4000000 4.0 false false No definition available. No authoritative reference available. true 27 Net cash used in investing activities 5 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -464900000 -464.9 false false 2 false true -410700000 -410.7 false false No definition available. No authoritative reference available. true 28 Financing Activities 4 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 29 Reduction of long-term borrowings 5 us-gaap_RepaymentsOfLongTermDebt us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -8600000 -8.6 false false 2 false true -10500000 -10.5 false false No definition available. No authoritative reference available. false 30 Cash dividends paid 5 us-gaap_PaymentsOfDividendsCommonStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -7100000 -7.1 false false 2 false true -7200000 -7.2 false false No definition available. No authoritative reference available. false 31 Proceeds from exercise of stock options 5 us-gaap_ProceedsFromStockOptionsExercised us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 5300000 5.3 false false 2 false true 26600000 26.6 false false No definition available. No authoritative reference available. false 32 Repurchase of common stock 5 us-gaap_PaymentsForRepurchaseOfCommonStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -4000000 -4.0 false false 2 false true -111200000 -111.2 false false No definition available. No authoritative reference available. false 33 Other 5 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -4000000 -4.0 false false 2 false true 2800000 2.8 false false No definition available. No authoritative reference available. true 34 Net cash used in financing activities 5 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -18400000 -18.4 false false 2 false true -99500000 -99.5 false false No definition available. No authoritative reference available. true 35 Effect of exchange rate changes on cash and cash equivalents 4 us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 100000 0.1 false false 2 false true -2500000 -2.5 false false No definition available. No authoritative reference available. false 36 Net cash (used in) provided by operating activities of discontinued operations 4 us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -10600000 -10.6 false false 2 false true 18400000 18.4 false false No definition available. No authoritative reference available. true 37 Increase (decrease) in cash and cash equivalents 4 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 92400000 92.4 false false 2 false true -97900000 -97.9 false false No definition available. No authoritative reference available. false 38 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 789600000 789.6 false false 2 false true 629500000 629.5 false false No definition available. No authoritative reference available. false 39 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 882000000 882.0 false false 2 true true 531600000 531.6 false false No definition available. No authoritative reference available. false false 2 33 false HundredThousands UnKnown UnKnown false true