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Consolidated Statements of Stockholders' Equity (USD $) In Millions | Total | Preferred Stock | Common Stock | Additional Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Loss, Net of Tax | Treasury Stock | Total IPG Stockholders' Equity | Noncontrolling Interests
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2011 | $ 2,497.3 | $ 221.5 | $ 48.2 | $ 2,427.5 | $ 405.1 | $ (225.7) | $ (414.9) | $ 2,461.7 | $ 35.6
Beginning balance, shares at Dec. 31, 2011 |  |  | 491.4 |  |  |  |  |  |
Net loss | (45.7) |  |  |  | (43.0) |  |  | (43.0) | (2.7)
Other comprehensive loss | 44.4 |  |  |  |  | 43.9 |  | 43.9 | 0.5
Reclassifications related to redeemable noncontrolling interests | 16.9 |  |  | 13.0 |  |  |  | 13.0 | 3.9
Noncontrolling interest transactions | (0.8) |  |  |  |  |  |  |  | (0.8)
Distributions to noncontrolling interests | (1.8) |  |  |  |  |  |  |  | (1.8)
Change in redemption value of redeemable noncontrolling interests | 3.3 |  |  |  | 3.3 |  |  | 3.3 |
Repurchase of common stock | (52.5) |  |  |  |  |  | (52.5) | (52.5) |
Common stock dividends | (26.2) |  |  |  | (26.2) |  |  | (26.2) |
Preferred stock dividends | (2.9) |  |  |  | (2.9) |  |  | (2.9) |
Stock-based compensation, shares |  |  | (0.1) |  |  |  |  |  |
Stock-based compensation | 14.0 |  | 0.6 | 13.4 |  |  |  | 14.0 |
Exercise of stock options, shares |  |  | 0.4 |  |  |  |  |  |
Exercise of stock options | 5.0 |  | 0.1 | 4.9 |  |  |  | 5.0 |
Shares withheld for taxes, shares |  |  | (0.1) |  |  |  |  |  |
Shares withheld for taxes | (22.7) |  | (0.2) | (22.5) |  |  |  | (22.7) |
Other | (0.2) |  |  | 0.9 | (0.6) |  |  | 0.3 | (0.5)
Ending balance at Mar. 31, 2012 | 2,428.1 | 221.5 | 48.7 | 2,437.2 | 335.7 | (181.8) | (467.4) | 2,393.9 | 34.2
Ending balance, shares at Mar. 31, 2012 |  |  | 491.6 |  |  |  |  |  |
Beginning balance at Dec. 31, 2012 | 2,456.6 | 221.5 | 48.8 | 2,465.4 | 738.3 | (288.0) | (765.4) | 2,420.6 | 36.0
Beginning balance, shares at Dec. 31, 2012 |  |  | 492.0 |  |  |  |  |  |
Net loss | (58.5) |  |  |  | (56.3) |  |  | (56.3) | (2.2)
Other comprehensive loss | (38.6) |  |  |  |  | (37.4) |  | (37.4) | (1.2)
Reclassifications related to redeemable noncontrolling interests | 1.7 |  |  |  |  |  |  |  | 1.7
Distributions to noncontrolling interests | (1.2) |  |  |  |  |  |  |  | (1.2)
Change in redemption value of redeemable noncontrolling interests | 0.9 |  |  |  | 0.9 |  |  | 0.9 |
Repurchase of common stock | (75.8) |  |  |  |  |  | (75.8) | (75.8) |
Common stock dividends | (31.0) |  |  |  | (31.0) |  |  | (31.0) |
Preferred stock dividends | (2.9) |  |  |  | (2.9) |  |  | (2.9) |
Conversion of convertible notes to common stock, shares |  |  | 16.9 |  |  |  |  |  |
Conversion of convertible notes to common stock | 200.0 |  | 1.7 | 198.3 |  |  |  | 200.0 |
Capped call transaction | 0 |  |  | 10.8 |  |  | (10.8) | 0 |
Stock-based compensation, shares |  |  | 0.9 |  |  |  |  |  |
Stock-based compensation | 26.8 |  | 0.4 | 26.4 |  |  |  | 26.8 |
Exercise of stock options, shares |  |  | 1.7 |  |  |  |  |  |
Exercise of stock options | 18.3 |  | 0.2 | 18.1 |  |  |  | 18.3 |
Shares withheld for taxes, shares |  |  | (0.1) |  |  |  |  |  |
Shares withheld for taxes | (19.4) |  | (0.2) | (19.2) |  |  |  | (19.4) |
Other | 5.5 |  |  | 5.8 | (0.3) |  |  | 5.5 |
Ending balance at Mar. 31, 2013 | $ 2,482.4 | $ 221.5 | $ 50.9 | $ 2,705.6 | $ 648.7 | $ (325.4) | $ (852.0) | $ 2,449.3 | $ 33.1
Ending balance, shares at Mar. 31, 2013 |  |  | 511.4 |  |  |  |  |  |

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