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v2.4.1.9

Employee Benefits (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
General Discussion of Pension and Other Postretirement Benefits [Abstract] |  |  |
Number of Participants Domestic Pension Plan | 4,000ipg_NumberOfParticipantsDomesticPensionPlan |  |
Number of Participants Postretirement Benefit Plan | 2,200ipg_NumberOfParticipantsPostretirementBenefitPlan |  |
Deferred Compensation Arrangements [Abstract] |  |  |
Deferred Compensation Liability | $ 97.7us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent | $ 92.7us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent |
Deferred Compensation Expense | 9.8us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense | 13.4us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense | 9.8us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
Deferred Benefit Liability | 153.2us-gaap_PostemploymentBenefitsLiabilityCurrentAndNoncurrent | 166.2us-gaap_PostemploymentBenefitsLiabilityCurrentAndNoncurrent |
Deferred Benefit Expense | 10.8us-gaap_PostemploymentBenefitsPeriodExpense | 14.0us-gaap_PostemploymentBenefitsPeriodExpense | 15.0us-gaap_PostemploymentBenefitsPeriodExpense
Cash Surrender Value of Life Insurance | 165.6us-gaap_CashSurrenderValueOfLifeInsurance | 162.3us-gaap_CashSurrenderValueOfLifeInsurance |
Deferred Compensation Plan Assets | 8.5us-gaap_DeferredCompensationPlanAssets | 7.7us-gaap_DeferredCompensationPlanAssets |
Supplemental Unemployment Benefits [Abstract] |  |  |
Duration of disability benefits | 24 months |  |
Health and Life Insurance Benefit Obligation | 8.0us-gaap_SupplementalUnemploymentBenefitsDisabilityRelatedBenefits | 10.5us-gaap_SupplementalUnemploymentBenefitsDisabilityRelatedBenefits |
Income Replacement Benefit Obligation | $ 0us-gaap_SupplementalUnemploymentBenefitsSalaryContinuation |  |

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- Definition Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765 + Details
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- Definition The carrying amount as of the balance sheet date of the obligations recognized for the various benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -SubTopic 10 -Section 25 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6410138&loc=d3e79691-111665 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -SubTopic 10 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6410138&loc=d3e79708-111665 + Details
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- Definition Liability for amount due a former employee for benefits as a result of them becoming physically or mentally impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Postemployment Benefits -URI http://asc.fasb.org/extlink&oid=6519534 + Details
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- Definition Liability for agreement to continue an employee's salary after termination of employment (but before retirement) including death, disability, or other event. For example, a company may agree to continue a disabled employee's salary for six months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Postemployment Benefits -URI http://asc.fasb.org/extlink&oid=6519534 + Details
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