| Component: (Network and Table) | |
|---|---|
| Network | 2316305 - Disclosure - Employee Benefits Schedule of Allocation of Plan Assets (Tables) (http://www.interpublic.com/role/EmployeeBenefitsScheduleOfAllocationOfPlanAssetsTables) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0000051644 (http://www.sec.gov/CIK) |
| Compensation and Retirement Disclosure [Abstract] | Period [Axis] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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2016-01-01 - 2016-12-31 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Compensation and Retirement Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule of Allocation of Plan Assets [Table Text Block] | As of December 31, 2016, the weighted-average target and actual asset allocations relating to our domestic and foreign pension plans' assets are listed below.
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