2.2.0.7 false CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) 00200 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS true false In Millions false false 1 USD false false Unit1 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit13 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Unit12 Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 2 USD false false Unit1 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit12 Standard http://www.xbrl.org/2003/instance shares xbrli 0 Unit13 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 $ 3 Cash Flows From Operating Activities: 1 us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 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 AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) false 5 Adjustments for non-cash items included in income: 2 us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 6 Depreciation and amortization 3 us-gaap_DepreciationAndAmortization us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 241700000 241.7 false false false 2 false true false false 207000000 207.0 false false false xbrli:monetaryItemType monetary The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. 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 Principles Board Opinion (APB) -Number 12 -Paragraph 5 false 7 Amortization of debt related costs 3 us-gaap_AmortizationOfFinancingCosts us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 19300000 19.3 false false false 2 false true false false 9500000 9.5 false false false xbrli:monetaryItemType monetary The component of interest expense comprised of the periodic charge against earnings over the life of the financing arrangement to which such costs relate. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 8 -Article 9 false 8 Amortization of liability for adverse power purchase commitment 3 aye_AmortizationOfLiabilityAboveMarketForNonutilityGeneratorContracts aye false debit duration The amortization of Electric utility liability attributable to above market contracts with NUGs (nonutility generators),... false false false false false false false false false false false terselabel false 1 false true false false -13400000 -13.4 false false false 2 false true false false -13100000 -13.1 false false false xbrli:monetaryItemType monetary The amortization of Electric utility liability attributable to above market contracts with NUGs (nonutility generators), which are due to deregulation of the utility's generation business. deregulated. No authoritative reference available. false 9 Gain on sale of Virginia distribution business 3 us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal 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 -45100000 -45.1 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary The gain (loss) resulting from the sale of a disposal group that is not a discontinued operation. It is included in income from continuing operations before income taxes in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 37, 45 false 10 Provision for uncollectible accounts 3 us-gaap_ProvisionForDoubtfulAccounts us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 12900000 12.9 false false false 2 false true false false 12300000 12.3 false false false xbrli:monetaryItemType monetary Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected). 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 5 -Article 5 false 11 Deferred income taxes and investment tax credit, net 3 us-gaap_DeferredIncomeTaxesAndTaxCredits us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 189600000 189.6 false false false 2 false true false false 188500000 188.5 false false false xbrli:monetaryItemType monetary The net amount of deferred income taxes and income tax credits less the tax benefit from exercise of stock options. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 12 Deferred energy costs, net 3 aye_DeferredEnergyCostsNet aye false debit duration Represents the deferral of certain costs incurred to the period in which such costs are recovered in rates. false false false false false false false false false false false false 1 false true false false 28000000 28.0 false false false 2 false true false false -38900000 -38.9 false false false xbrli:monetaryItemType monetary Represents the deferral of certain costs incurred to the period in which such costs are recovered in rates. No authoritative reference available. false 13 Stock-based compensation expense 3 us-gaap_AllocatedShareBasedCompensationExpense us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 17500000 17.5 false false false 2 false true false false 11900000 11.9 false false false xbrli:monetaryItemType monetary Represents the expense recognized during the period arising from share-based compensation arrangements (for example, shares of stock, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F false 14 Unrealized losses (gains) on derivative contracts, net 3 us-gaap_UnrealizedGainLossOnDerivatives 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 -2400000 -2.4 false false false 2 false true false false -16100000 -16.1 false false false xbrli:monetaryItemType monetary The increases (decreases) in the market value of derivative instruments, including options, swaps, futures, and forward contracts, which were included in earnings in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 15 Pension and other postretirement employee benefit plan expense 3 us-gaap_PensionAndOtherPostretirementBenefitExpense us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 44600000 44.6 false false false 2 false true false false 30000000 30.0 false false false xbrli:monetaryItemType monetary The amount of pension and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for (1) defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain or loss on assets, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments) and for (2) defined contribution plans (to the extent that a plan's defined contributions to an individual's account are to be made for periods in which that individual renders services, the net cost for a period shall be the contribution called for in that period; if a plan calls for contributions for periods after an individual retires or terminates, the estimated cost shall be accrued during the employee's service period). 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 FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5, 11 false 16 Contributions to pension and other postretirement plans 3 us-gaap_PensionAndOtherPostretirementBenefitContributions 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 -69600000 -69.6 false false false 2 false true false false -45100000 -45.1 false false false xbrli:monetaryItemType monetary The amount of cash or cash equivalents contributed during the reporting period by the entity to fund its pension plans and its non-pension postretirement benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 17 Deferred revenue-Fort Martin scrubber project 3 aye_DeferredRevenueForProjects aye false debit duration Represents surcharge amounts collected from West Virginia customers to pay for a portion of the costs associated with... false false false false false false false false false false false terselabel false 1 false true false false -2900000 -2.9 false false false 2 false true false false 8100000 8.1 false false false xbrli:monetaryItemType monetary Represents surcharge amounts collected from West Virginia customers to pay for a portion of the costs associated with building pollution control scrubbers at Allegheny's Fort Martin power plant. These collections will be used to pay off bonds that were issued to pay for the scrubber cost. No authoritative reference available. false 18 Deferred revenue recognized-Virginia 3 us-gaap_RecognitionOfDeferredRevenue 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 0 0 false false false 2 false true false false -28300000 -28.3 false false false xbrli:monetaryItemType monetary The amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. For cash flows, this element primarily pertains to amortization of deferred credits on long-term arrangements. As a noncash item, it is deducted from net income when calculating cash provided by (used in) operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A -Subsection 1 false 19 Deferred revenue-energy efficiency programs 3 aye_DeferredRevenueExpenseEnergyEfficiencyPrograms aye false debit duration Deferred Revenue (Expense), Energy Efficiency Programs false false false false false false false false false false false terselabel false 1 false true false false 12900000 12.9 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Deferred Revenue (Expense), Energy Efficiency Programs No authoritative reference available. false 20 Uncollected transmission revenue 3 aye_UncollectedTransmissionRevenue aye false debit duration Uncollected Transmission Revenue false false false false false false false false false false false false 1 false true false false -33700000 -33.7 false false false 2 false true false false -14600000 -14.6 false false false xbrli:monetaryItemType monetary Uncollected Transmission Revenue No authoritative reference available. false 21 Other, net 3 us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false -11500000 -11.5 false false false 2 false true false false 12900000 12.9 false false false xbrli:monetaryItemType monetary Transactions that do not result in cash inflows or outflows in the period in which they occur, but affect net income and thus are removed when calculating net cash flow from operating activities using the indirect cash flow method. This element is used when there is not a more specific and appropriate element. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 22 Changes in certain assets and liabilities: 2 us-gaap_IncreaseDecreaseInOperatingCapitalAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 23 Accounts receivable, net 3 us-gaap_IncreaseDecreaseInAccountsReceivable 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 -12200000 -12.2 false false false 2 false true false false 1000000 1.0 false false false xbrli:monetaryItemType monetary The net change during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 24 Materials, supplies and fuel 3 us-gaap_IncreaseDecreaseInInventories 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 70500000 70.5 false false false 2 false true false false -85200000 -85.2 false false false xbrli:monetaryItemType monetary The net change during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 25 Prepaid taxes 3 us-gaap_IncreaseDecreaseInPrepaidExpense 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 -7600000 -7.6 false false false 2 false true false false -12200000 -12.2 false false false xbrli:monetaryItemType monetary The net change during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 26 Collateral deposits 3 us-gaap_IncreaseDecreaseInDepositsOutstanding 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 -27000000 -27.0 false false false 2 false true false false 32700000 32.7 false false false xbrli:monetaryItemType monetary The net change during the reporting period in moneys given as security or collateral for items acquired or borrowed on a temporary basis. Deposits may also be paid as initial payment of the cost of acquisition or for the right to enter into a contract or agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 27 Accounts payable 3 us-gaap_IncreaseDecreaseInAccountsPayable 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 -38400000 -38.4 false false false 2 false true false false -45300000 -45.3 false false false xbrli:monetaryItemType monetary The net change during the reporting period in the aggregate amount of obligations due within one year (or one business cycle). This may include trade payables, amounts due to related parties, royalties payable, and other obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 28 Accrued taxes 3 us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable 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 -23600000 -23.6 false false false 2 false true false false -55700000 -55.7 false false false xbrli:monetaryItemType monetary The net change during the period in the amount of cash payments due to taxing authorities for taxes that are based on the reporting entity's earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 29 Accrued interest 3 us-gaap_IncreaseDecreaseInInterestPayableNet 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 22000000 22.0 false false false 2 false true false false 9100000 9.1 false false false xbrli:monetaryItemType monetary The net change during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 30 Regulatory assets and liabilities 3 us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities 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 -30900000 -30.9 false false false 2 false true false false 23500000 23.5 false false false xbrli:monetaryItemType monetary The net change during the reporting period in the value of assets that are created when regulatory agencies permits public utilities to defer costs (revenues) to the balance sheet. This element is a the net change of regulatory assets and liabilities combined. No authoritative reference available. false 31 Deferred income taxes 3 us-gaap_IncreaseDecreaseInDeferredIncomeTaxes us-gaap true credit duration No definition available. false false false false false false false false false false false false 1 false true false false -2000000 -2.0 false false false 2 false true false false -2600000 -2.6 false false false xbrli:monetaryItemType monetary The net change during the reporting period in the account that represents the temporary difference that results from income (loss) that is recognized for accounting purposes but not for tax purposes and vice versa. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 32 Distributions from equity method investee 3 us-gaap_EquityMethodInvestmentDividendsOrDistributions 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 0 0 false false false 2 false true false false 1300000 1.3 false false false xbrli:monetaryItemType monetary This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities. 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 19 false 33 Assets and liabilities held for sale 3 aye_IncreaseDecreaseInNetAssetsHeldForSale aye false credit duration Assets and liabilities - held for sale false false false false false false false false false false true negated false 1 false true false false -8600000 -8.6 false false false 2 false true false false 3100000 3.1 false false false xbrli:monetaryItemType monetary Assets and liabilities - held for sale No authoritative reference available. false 34 Other operating assets and liabilities 3 us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet 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 -6300000 -6.3 false false false 2 false true false false 5600000 5.6 false false false xbrli:monetaryItemType monetary For entities with classified balance sheets, the net change during the reporting period in the value of other assets or liabilities used in operating activities, that are not otherwise defined in the taxonomy. For entities with unclassified balance sheets, the net change during the reporting period in the value of all other assets or liabilities used in operating activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 35 Net cash provided by operating activities 2 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 647300000 647.3 false false false 2 false true false false 483700000 483.7 false false false xbrli:monetaryItemType monetary The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. 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 FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 36 Cash Flows From Investing Activities: 1 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 37 Capital expenditures 2 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment 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 -726600000 -726.6 false false false 2 false true false false -870100000 -870.1 false false false xbrli:monetaryItemType monetary The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 17 -Subparagraph c false 38 Proceeds from sale of Virginia distribution business 2 us-gaap_ProceedsFromDivestitureOfBusinesses us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 317200000 317.2 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15, 16 false 39 Decrease in restricted funds 2 us-gaap_IncreaseDecreaseInRestrictedCash 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 40200000 40.2 false false false 2 false true false false 131000000 131.0 false false false xbrli:monetaryItemType monetary The net cash inflow (outflow) for the net change associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15, 16, 17 false 40 Deconsolidation of PATH WV 2 us-gaap_CashDivestedFromDeconsolidation 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 -3400000 -3.4 false false false 2 false true false false 0 0 false false false xbrli:monetaryItemType monetary Reduction in cash due to no longer including the former subsidiary's cash in the consolidated entity's cash. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 15, 16 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 39 false 41 Other 2 us-gaap_PaymentsToAcquireOtherInvestments 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 -4000000 -4.0 false false false 2 false true false false -3600000 -3.6 false false false xbrli:monetaryItemType monetary The cash outflow associated with other investments held by the entity for investment purposes not otherwise defined in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 false 42 Net cash used in investing activities 2 us-gaap_NetCashProvidedByUsedInInvestingActivities 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 -376600000 -376.6 false false false 2 false true false false -742700000 -742.7 false false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from investing activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 43 Cash Flows From Financing Activities: 1 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 44 Issuance of long-term debt 2 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 1011800000 1011.8 false false false 2 false true false false 709200000 709.2 false false false xbrli:monetaryItemType monetary The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. 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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 26, 31 false 49 Proceeds from exercise of employee stock options 2 us-gaap_ProceedsFromStockOptionsExercised us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 false true false false 800000 0.8 false false false 2 false true false false 1600000 1.6 false false false xbrli:monetaryItemType monetary The cash inflow associated with the amount received from holders exercising their stock options. 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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 26 true 54 Cash and cash equivalents at beginning of period 1 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false true false false 286600000 286.6 false false false 2 false true false false 362100000 362.1 false false false xbrli:monetaryItemType monetary Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents. 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It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents. 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