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No authoritative reference available. false 9 Property and equipment 5 us-gaap_BusinessAcquisitionPurchasePriceAllocationPropertyPlantAndEquipment us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 6700000 6.7 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false xbrli:monetaryItemType monetary The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 53 -Subparagraph d false 11 Other intangible assets 5 us-gaap_BusinessAcquisitionPurchasePriceAllocationAmortizableIntangibleAssets us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 118100000 118.1 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false true false false 99800000 99.8 true false false 5 false false false false 0 0 true false false 6 false true false false 18300000 18.3 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false xbrli:monetaryItemType monetary The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized. 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No authoritative reference available. false 16 Settlement obligations 5 wu_BusinessAcquisitionPurchasePriceAllocationSettlementObligations wu false credit instant Settlement obligations acquired in a business combination. false false false false false false false false false false false verboselabel false 1 false true false false 152500000 152.5 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false xbrli:monetaryItemType monetary Settlement obligations acquired in a business combination. No authoritative reference available. false 17 Deferred tax liability, net 5 us-gaap_BusinessAcquisitionPurchasePriceAllocationDeferredIncomeTaxesAssetLiabilityNet us-gaap true debit instant No definition available. false false false false false false false false false false true negated false 1 false true false false 31900000 31.9 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false xbrli:monetaryItemType monetary Amount of deferred tax assets or liabilities for the differences between the values assigned and the tax bases of assets and liabilities in a business combination, net of any valuation allowance for deferred tax assets. 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No authoritative reference available. true 19 Total liabilities 5 us-gaap_BusinessAcquisitionPurchasePriceAllocationLiabilitiesAssumed us-gaap true credit instant No definition available. false false false false false false false false false false false totallabel false 1 false true false false 259100000 259.1 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false xbrli:monetaryItemType monetary The amount of acquisition cost of a business combination allocated to liabilities assumed. 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A major class is composed of intangible assets that can be grouped together because they are similar either by their nature or by their use in the operations of a company. No authoritative reference available. false 25 Goodwill expected to be deductible for United States income tax purposes 4 us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 225100000 225.1 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false false false false 0 0 true false false xbrli:monetaryItemType monetary The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. 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No authoritative reference available. false 28 Business Acquisition, other noncash consideration 4 us-gaap_BusinessAcquisitionCostOfAcquiredEntityOtherNoncashConsideration us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false 4 false false false false 0 0 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false true false false 86200000 86.2 true false false xbrli:monetaryItemType monetary Fair value of noncash consideration given by the acquirer to acquire the entity. Does not include cash paid, the fair value of debt and securities issued and liabilities incurred to acquire the entity. 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