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Loss Per Share (Notes) | 3 Months Ended
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Mar. 31, 2015
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | Loss Per Share The following sets forth basic and diluted loss per common share available to IPG common stockholders.
| Three months ended March 31,
| 2015 |  | 2014
Net loss available to IPG common stockholders - basic and diluted | $ | (1.8 | ) |  | $ | (20.9 | )
Weighted-average number of common shares outstanding - basic and diluted | 411.1 |  |  | 422.8 |
Loss per share available to IPG common stockholders - basic and diluted | $ | 0.00 |  |  | $ | (0.05 | )
Basic and diluted shares outstanding and loss per share are equal for the three months ended March 31, 2015 and 2014 because our potentially dilutive securities are antidilutive as a result of the net loss available to IPG common stockholders in each period presented. The following table presents the potential shares excluded from the diluted loss per share calculation because the effect of including these potential shares would be antidilutive.
| Three months ended March 31,
| 2015 |  | 2014
Restricted stock, stock options and other equity awards | 6.3 |  |  | 6.8 |

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- Definition The entire disclosure for earnings per share. + 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 (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=32703322&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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