Label	Element	Value
Minimum [Member]
Measurement Input, Revenue Growth Rate 1-5yrs	ipg_MeasurementInputRevenueGrowthRate15yrs	(2.00%)
Maximum [Member]
Measurement Input, Revenue Growth Rate 1-5yrs	ipg_MeasurementInputRevenueGrowthRate15yrs	6.00%
SC&E [Member]
Depreciation	us-gaap_Depreciation	$ 14,300,000
Depreciation	us-gaap_Depreciation	15,900,000
Depreciation	us-gaap_Depreciation	16,900,000
IA&C [Member]
Depreciation	us-gaap_Depreciation	50,600,000
Depreciation	us-gaap_Depreciation	53,600,000
Depreciation	us-gaap_Depreciation	58,300,000
MD&E [Member]
Depreciation	us-gaap_Depreciation	106,100,000
Depreciation	us-gaap_Depreciation	105,800,000
Depreciation	us-gaap_Depreciation	$ 107,500,000