XML 66 R50.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Earnings Per Share Potential Shares Excluded from Diluted Earnings Per Share Calculation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2015
Potential Shares Excluded from Diluted Earnings Per Share Calculation [Abstract] |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] | The following table presents the potential shares excluded from the diluted earnings per share calculation because the effect of including these potential shares would be antidilutive.
| Years ended December 31,
| 2015 |  | 2014 |  | 2013
Preferred Stock Outstanding 1 | 0.0 |  |  | 0.0 |  |  | 13.7 |
Securities excluded from the diluted earnings per share calculation because the exercise price was greater than the average market price: |  |  |  |  |
Stock options 2 | 0.0 |  |  | 0.0 |  |  | 0.1 |
1 | We converted all of our 5 1/4% Series B Cumulative Convertible Perpetual Preferred Stock into common stock in October 2013. For purposes of calculating diluted earnings per share for 2013, the potentially dilutive shares would have been pro-rated based on the period they were outstanding but were antidilutive.
2 | These options were outstanding at the end of the respective periods. In any period in which the exercise price is less than the average market price, these options have the potential to be dilutive, and application of the treasury stock method would reduce this amount.

X
- Definition Potential Shares Excluded from Diluted Earnings Per Share Calculation [Abstract] + References No definition available. + Details
Name: | ipg_PotentialSharesExcludedfromDilutedEarningsPerShareCalculationAbstract
Namespace Prefix: | ipg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration