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CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Millions, except Share data, unless otherwise specified | Total | Common Stock | Retained Earnings | Accumulated Other Comprehensive (Loss) Income | Non-controlling Interests | Comprehensive Income
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2008 | $ 2,435.1 | $ 563.1 | $ 1,900.4 | $ (32.0) | $ 3.6 |
Balance (in shares) at Dec. 31, 2008 |  | 73,312,714 |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income | 149.2 |  | 148.2 |  | 1.0 | 149.2
Other comprehensive (loss) income: |  |  |  |  |  |
Foreign currency translation gain (loss) | 25.9 |  |  | 25.9 |  | 25.9
Unrealized gain (loss) on investments, net of tax | 0.5 |  |  | 0.5 |  | 0.5
Minimum pension liability, net of tax | 4.1 |  |  | 4.1 |  | 4.1
Comprehensive income | 179.7 |  |  |  |  | 179.7
Noncontrolling interests purchased | (2.7) | (1.8) |  |  | (0.9) |
Payments to noncontrolling interest holders | (2.1) |  |  |  | (2.1) |
Share-based compensation | 15.5 | 15.5 |  |  |  |
Stock options exercised | 10.5 | 10.5 |  |  |  |
Stock options exercised (in shares) |  | 427,697 |  |  |  |
Share-based compensation tax benefits (deficit) | 1.2 |  | 1.2 |  |  |
Stock issued under incentive bonus plan | 0.3 | 0.3 |  |  |  |
Stock issued under incentive bonus plan (in shares) |  | 10,360 |  |  |  |
Cash dividends - $0.48, $0.40 and $0.40 per share for the year ended on December 31, 2011, December 31, 2010 and December 31, 2009, respectively | (29.4) |  | (29.4) |  |  |
Balance at Dec. 31, 2009 | 2,608.1 | 587.6 | 2,020.4 | (1.5) | 1.6 |
Balance (in shares) at Dec. 31, 2009 |  | 73,750,771 |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income | 197.9 |  | 194.4 |  | 3.5 | 197.9
Other comprehensive (loss) income: |  |  |  |  |  |
Foreign currency translation gain (loss) | 9.7 |  |  | 9.7 |  | 9.7
Unrealized gain (loss) on investments, net of tax | 0.2 |  |  | 0.2 |  | 0.2
Minimum pension liability, net of tax | 1.9 |  |  | 1.9 |  | 1.9
Comprehensive income | 209.7 |  |  |  |  | 209.7
Issuance of equity interest in subsidiary to noncontrolling interests | 0.2 | (1.4) |  |  | 1.6 |
Consolidation of a joint venture entity | 1.5 |  |  |  | 1.5 |
Payments to noncontrolling interest holders | (1.8) |  |  |  | (1.8) |
Share-based compensation | 17.3 | 17.3 |  |  |  |
Share-based compensation (in shares) |  | 61,000 |  |  |  |
Stock options exercised | 21.2 | 21.2 |  |  |  |
Stock options exercised (in shares) |  | 827,452 |  |  |  |
Share-based compensation tax benefits (deficit) | 3.6 |  | 3.6 |  |  |
Cash dividends - $0.48, $0.40 and $0.40 per share for the year ended on December 31, 2011, December 31, 2010 and December 31, 2009, respectively | (29.7) |  | (29.7) |  |  |
Balance at Dec. 31, 2010 | 2,830.1 | 624.7 | 2,188.7 | 10.3 | 6.4 |
Balance (in shares) at Dec. 31, 2010 | 74,639,223 | 74,639,223 |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income | 349.2 |  | 343.8 |  | 5.4 | 349.2
Other comprehensive (loss) income: |  |  |  |  |  |
Foreign currency translation gain (loss) | (9.9) |  |  | (9.9) |  | (9.9)
Unrealized gain (loss) on investments, net of tax | (0.2) |  |  | (0.2) |  | (0.2)
Minimum pension liability, net of tax | (9.0) |  |  | (9.0) |  | (9.0)
Comprehensive income | 330.1 |  |  |  |  | 330.1
Payments to noncontrolling interest holders | (3.7) |  |  |  | (3.7) |
Share-based compensation | 21.3 | 21.3 |  |  |  |
Share-based compensation (in shares) |  | 102,079 |  |  |  |
Stock options exercised | 11.1 | 11.1 |  |  |  |
Stock options exercised (in shares) |  | 266,392 |  |  |  |
Share-based compensation tax benefits (deficit) | (1.0) |  | (1.0) |  |  |
Cash dividends - $0.48, $0.40 and $0.40 per share for the year ended on December 31, 2011, December 31, 2010 and December 31, 2009, respectively | (35.9) |  | (35.9) |  |  |
Balance at Dec. 31, 2011 | $ 3,152.0 | $ 657.1 | $ 2,495.6 | $ (8.8) | $ 8.1 |
Balance (in shares) at Dec. 31, 2011 | 75,007,694 | 75,007,694 |  |  |  |

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