XML 28 R49.htm IDEA: XBRL DOCUMENT v2.4.1.9
Segment Information Balance Sheet (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Segments:    
Assets $ 11,200.2us-gaap_Assets $ 12,747.2us-gaap_Assets
IAN    
Segments:    
Assets 10,179.3us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_OperatingSegmentsMember		 11,111.2us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_OperatingSegmentsMember
CMG    
Segments:    
Assets 1,231.0us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= ipg_ReportableSegmentsTwoMember		 1,316.5us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= ipg_ReportableSegmentsTwoMember
Corporate and Other    
Segments:    
Assets $ (210.1)us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember		 $ 319.5us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateAndOtherMember