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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Millions, unless otherwise specified | Total | Common shareholders' equity. | Common shares and paid-in surplus | Retained earnings | Accum. Other comprehensive income (loss),after-tax | Non-controlling interest
--- | --- | --- | --- | --- | --- | ---
Balances at Dec. 31, 2010 |  | $ 3,653.0 | $ 1,359.0 | $ 2,175.6 | $ 118.4 | $ 607.8
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Net income (loss) | (16.8) | (28.2) |  | (28.2) |  | 11.4
Other comprehensive income, after-tax |  | 62.0 |  |  | 62.0 |
Dividends declared on common shares |  | (8.0) |  | (8.0) |  |
Dividends to noncontrolling interests |  |  |  |  |  | (4.8)
Repurchases and retirements of common shares | (86.0) | (86.1) | (40.9) | (45.2) |  |
Net distributions to noncontrolling interests |  |  |  |  |  | (0.6)
Amortization of restricted share and option awards |  | 2.5 | 2.5 |  |  | 0.1
Balances at Mar. 31, 2011 |  | 3,595.2 | 1,320.6 | 2,094.2 | 180.4 | 613.9
Balances at Dec. 31, 2011 | 4,667.9 | 4,087.7 | 1,261.3 | 2,789.7 | 36.7 | 580.2
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |
Net income (loss) | 110.6 | 93.8 |  | 93.8 |  | 16.8
Other comprehensive income, after-tax |  | 22.3 |  |  | 22.3 |
Dividends declared on common shares |  | (6.6) |  | (6.6) |  |
Dividends to noncontrolling interests |  |  |  |  |  | (5.0)
Repurchases and retirements of common shares | (76.0) | (485.8) | (162.6) | (323.2) |  |
Issuances of common shares |  | 4.6 | 4.6 |  |  |
Net distributions to noncontrolling interests |  |  |  |  |  | (1.5)
Amortization of restricted share and option awards |  | 2.8 | 2.8 |  |  | 0.2
Balances at Mar. 31, 2012 | $ 4,309.5 | $ 3,718.8 | $ 1,106.1 | $ 2,553.7 | $ 59.0 | $ 590.7

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