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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Millions | Total | Ordinary shares | Preference shares | 7.401% preference shares | Non-controlling interest | Additional paid-in capital | Additional paid-in capital Ordinary shares | Additional paid-in capital Preference shares | Retained earnings | Retained earnings Ordinary shares | Retained earnings Preference shares | Cumulative foreign currency translation adjustments, net of taxes: | Loss on derivatives, net of taxes: | Unrealized appreciation on investments, net of taxes:
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Shareholder's equity, beginning balance at Dec. 31, 2015 |  |  |  |  |  | $ 1.3 | $ 1,075.3 |  |  |  | $ 2,283.6 |  |  |  |  | $ 0.6 | $ (1.2) | $ 60.2
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net change attributable to non-controlling interest for the period |  | $ 0.2 |  |  |  | (0.2) |  |  |  |  | 0.2 |  |  |  |  |  |  |
New ordinary shares issued |  |  |  |  |  |  |  | $ 1.5 |  |  |  |  |  |  |  |  |  |
Ordinary shares repurchased and cancelled |  |  |  |  |  |  |  | (25.0) |  |  |  |  |  |  |  |  |  |
Share-based compensation | [1] |  |  |  |  |  | 4.1 |  |  |  |  |  |  |  |  |  |  |
Net income for the period |  | 114.4 |  |  |  |  |  |  |  |  | 114.4 |  |  |  |  |  |  |
Dividends on ordinary shares |  |  |  |  |  |  |  |  |  |  |  |  | $ (12.8) |  |  |  |  |
Dividends on preference shares |  | (9.5) |  |  |  |  |  |  |  |  |  |  |  | $ (9.5) |  |  |  |
Preference shares redemption |  | 0.0 |  |  |  |  |  |  | $ 0.0 |  |  |  |  | 0.0 |  |  |  |
Change for the period, net of income tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (11.0) |  | 76.9
Shareholder's equity, ending balance at Mar. 31, 2016 |  | 3,557.1 | $ 0.1 | $ 0.0 |  | 1.1 | 1,055.9 |  |  |  | 2,375.9 |  |  |  |  | (10.4) | (2.6) | 137.1
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preference share redemption |  |  |  |  |  |  |  |  | 0.0 |  |  |  |  |  |  |  |  |
Shareholder's equity, beginning balance at Dec. 31, 2015 |  |  |  |  |  | 1.3 | 1,075.3 |  |  |  | 2,283.6 |  |  |  |  | 0.6 | (1.2) | 60.2
Shareholder's equity, ending balance at Dec. 31, 2016 |  | 3,648.3 |  |  |  | 1.4 | 1,259.6 |  |  |  | 2,392.3 |  |  |  |  | (27.1) | (0.5) | 22.5
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preference shares, rate |  |  |  |  | 7.401% |  |  |  |  |  |  |  |  |  |  |  |  |
Net change from current period hedged transactions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1.4) |
Total accumulated other comprehensive income, net of taxes |  | 124.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative effect of new accounting principle in period of adoption | Accounting Standards Update 2016-09 |  |  |  |  |  |  |  |  |  |  | 0.0 |  |  |  |  |  |  |
Total accumulated other comprehensive income, net of taxes |  | (5.1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net change attributable to non-controlling interest for the period |  | (0.1) |  |  |  | 0.1 |  |  |  |  | (0.1) |  |  |  |  |  |  |
New ordinary shares issued |  |  |  |  |  |  |  | 0.1 |  |  |  |  |  |  |  |  |  |
Ordinary shares repurchased and cancelled |  |  |  |  |  |  |  | $ 0.0 |  |  |  |  |  |  |  |  |  |
Share-based compensation | [1] |  |  |  |  |  | 13.2 |  |  |  |  |  |  |  |  |  |  |
Net income for the period |  | 96.5 |  |  |  |  |  |  |  |  | 96.5 |  |  |  |  |  |  |
Dividends on ordinary shares |  |  |  |  |  |  |  |  |  |  |  |  | $ (13.2) |  |  |  |  |
Dividends on preference shares |  | (10.5) |  |  |  |  |  |  |  |  |  |  |  | (10.5) |  |  |  |
Preference shares redemption |  | (2.4) |  |  |  |  |  |  | 2.4 | [2] |  |  |  | $ (2.4) | [2] |  |  |
Change for the period, net of income tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (12.9) |  | 2.1
Shareholder's equity, ending balance at Mar. 31, 2017 |  | 3,594.4 | $ 0.1 | $ 0.0 |  | $ 1.5 | 1,142.1 |  |  |  | 2,465.4 |  |  |  |  | $ (40.0) | 0.7 | $ 24.6
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preference shares, rate |  |  |  |  | 7.401% |  |  |  |  |  |  |  |  |  |  |  |  |
Preference share redemption |  |  |  |  |  |  |  |  | $ 133.2 |  |  |  |  |  |  |  |  |
Net change from current period hedged transactions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.2 |
Total accumulated other comprehensive income, net of taxes |  | $ (14.7) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative effect of new accounting principle in period of adoption | Accounting Standards Update 2016-09 |  |  |  |  |  |  | $ 7.9 |  |  |  | $ 2.8 | [3] |  |  |  |  |  |
[1] | The balance includes $7.9 million reclassification from accrued expenses and other payable as a result of the classification of restricted share units as equity following the adoption of ASU 2016-09
[2] | The $2.4 million reclassification from additional paid-in capital to retained earnings is the difference between the capital raised upon issuance of the 7.401% Perpetual Non-Cumulative Preference Shares, net of issuance costs, and the final redemption costs of $133.2 million.
[3] | The $2.8 million relates to the cumulative effect-adjustment to opening retained earnings as a result of the classification of restricted share units as equity following the adoption of ASU 2016-09

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