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Basis of Presentation (Details) (USD $) In Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2010 | Jun. 30, 2010
Basis of Presentation [Abstract] |  |
Revenue reclassification adjustment | $ 6.1 | $ 10.4
Office and general expense reclassification adjustment | $ 6.1 | $ 10.4

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- Definition Reclassification adjustment of revenue from a gross to a net basis + Details
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Namespace Prefix: | ipg
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration