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v2.4.1.9

Operations (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Segments: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 2,207.1us-gaap_Revenues | $ 1,841.1us-gaap_Revenues | $ 1,851.4us-gaap_Revenues |  | $ 1,637.5us-gaap_Revenues | $ 2,122.7us-gaap_Revenues | $ 1,700.4us-gaap_Revenues |  | $ 1,756.2us-gaap_Revenues | $ 1,543.0us-gaap_Revenues | $ 7,537.1us-gaap_Revenues | $ 7,122.3us-gaap_Revenues | $ 6,956.2us-gaap_Revenues
Segment operating income |  |  |  |  |  |  |  |  |  |  | 788.6ipg_SegmentOperatingIncomeLoss | 658.9ipg_SegmentOperatingIncomeLoss | 677.1ipg_SegmentOperatingIncomeLoss
Restructuring and other reorganization-related (charges) reversals, net | (0.1)us-gaap_RestructuringCharges | 0.1us-gaap_RestructuringCharges | (0.7)us-gaap_RestructuringCharges |  | 0.5us-gaap_RestructuringCharges | (60.6)us-gaap_RestructuringCharges | 0.2us-gaap_RestructuringCharges |  | (0.3)us-gaap_RestructuringCharges | 0.1us-gaap_RestructuringCharges | (0.2)us-gaap_RestructuringCharges | (60.6)us-gaap_RestructuringCharges | 1.2us-gaap_RestructuringCharges
Interest expense |  |  |  |  |  |  |  |  |  |  | 84.9us-gaap_InterestExpense | 122.7us-gaap_InterestExpense | 133.5us-gaap_InterestExpense
Interest income |  |  |  |  |  |  |  |  |  |  | 27.4us-gaap_InvestmentIncomeInterest | 24.7us-gaap_InvestmentIncomeInterest | 29.5us-gaap_InvestmentIncomeInterest
Other (expense) income, net | (0.1)us-gaap_OtherNonoperatingIncomeExpense | (0.6)us-gaap_OtherNonoperatingIncomeExpense | (11.2)us-gaap_OtherNonoperatingIncomeExpense | [1] | 1.7us-gaap_OtherNonoperatingIncomeExpense | 7.7us-gaap_OtherNonoperatingIncomeExpense | (46.6)us-gaap_OtherNonoperatingIncomeExpense | [1] | 4.8us-gaap_OtherNonoperatingIncomeExpense | 1.8us-gaap_OtherNonoperatingIncomeExpense | 10.2us-gaap_OtherNonoperatingIncomeExpense | 32.3us-gaap_OtherNonoperatingIncomeExpense | (100.5)us-gaap_OtherNonoperatingIncomeExpense
Income before income taxes |  |  |  |  |  |  |  |  |  |  | 720.7us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 468.0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 674.8us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Depreciation and amortization of fixed assets and intangible assets |  |  |  |  |  |  |  |  |  |  | 163.0us-gaap_DepreciationAndAmortization | 157.4us-gaap_DepreciationAndAmortization | 147.7us-gaap_DepreciationAndAmortization
Capital expenditures |  |  |  |  |  |  |  |  |  |  | 148.7us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 173.0us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 169.2us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Assets | 12,747.2us-gaap_Assets |  |  |  |  | 12,905.0us-gaap_Assets |  |  |  |  | 12,747.2us-gaap_Assets | 12,905.0us-gaap_Assets |
IAN |  |  |  |  |  |  |  |  |  |  |  |  |
Segments: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  | 6,097.3us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember | 5,795.6us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember | 5,728.5us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember
Segment operating income |  |  |  |  |  |  |  |  |  |  | 777.1ipg_SegmentOperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember | 662.1ipg_SegmentOperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember | 700.2ipg_SegmentOperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember
Restructuring and other reorganization-related (charges) reversals, net |  |  |  |  |  |  |  |  |  |  |  | (0.3)us-gaap_RestructuringCharges / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember |
Depreciation and amortization of fixed assets and intangible assets |  |  |  |  |  |  |  |  |  |  | 124.6us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember | 126.0us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember | 119.7us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember
Capital expenditures |  |  |  |  |  |  |  |  |  |  | (92.1)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember | (109.0)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember | (97.5)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember
Assets | 11,111.2us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember |  |  |  |  | 11,425.1us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember |  |  |  |  | 11,111.2us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember | 11,425.1us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_OperatingSegmentsMember |
CMG |  |  |  |  |  |  |  |  |  |  |  |  |
Segments: |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  |  |  | 1,439.8us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember | 1,326.7us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember | 1,227.7us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember
Segment operating income |  |  |  |  |  |  |  |  |  |  | 161.0ipg_SegmentOperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember | 137.6ipg_SegmentOperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember | 114.2ipg_SegmentOperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember
Restructuring and other reorganization-related (charges) reversals, net |  |  |  |  |  |  |  |  |  |  |  | 0.2us-gaap_RestructuringCharges / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember |
Depreciation and amortization of fixed assets and intangible assets |  |  |  |  |  |  |  |  |  |  | 18.4us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember | 15.6us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember | 14.4us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember
Capital expenditures |  |  |  |  |  |  |  |  |  |  | (11.6)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember | (18.5)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember | (26.7)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember
Assets | 1,316.5us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember |  |  |  |  | 1,203.8us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember |  |  |  |  | 1,316.5us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember | 1,203.8us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ipg_ReportableSegmentsTwoMember |
Corporate and Other |  |  |  |  |  |  |  |  |  |  |  |  |
Segments: |  |  |  |  |  |  |  |  |  |  |  |  |
Segment operating income |  |  |  |  |  |  |  |  |  |  | (149.5)ipg_SegmentOperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | (140.8)ipg_SegmentOperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | (137.3)ipg_SegmentOperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember
Depreciation and amortization of fixed assets and intangible assets |  |  |  |  |  |  |  |  |  |  | 20.0us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 15.8us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 13.6us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember
Capital expenditures |  |  |  |  |  |  |  |  |  |  | (45.0)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | (45.5)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | (45.0)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember
Assets | $ 319.5us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |  |  |  | $ 276.1us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |  |  |  | $ 319.5us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | $ 276.1us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |
[1] | The three months ended June 30, 2014 included a pre-tax loss of $10.4, related to our early extinguishment of debt. The three months ended September 30, 2013 included a pre-tax loss of $45.2, related to our early extinguishment of debt.

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