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COMMON SHARE CAPITAL (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
COMMON SHARE CAPITAL |  |
Balance at the beginning of the period (shares) | 1,245,049,712 |
Balance at the end of the period (shares) | 1,247,003,940 | 1,245,049,712
Balance at the beginning of the period | $ 4,184.3 |
Balance at the end of the period | 4,619.2 | $ 4,184.3
Total common share capital | $ 14,902.5 | $ 14,894.2
Common share capital |  |
COMMON SHARE CAPITAL |  |
Balance at the beginning of the period (shares) | 1,245,050,000 | 1,146,540,000
Equity issuance (shares) |  | 95,910,000
Under share option and restricted share plans(shares) | 1,954,000 | 2,600,000
Balance at the end of the period (shares) | 1,247,004,000 | 1,245,050,000
Balance at the beginning of the period | $ 14,894.2 | $ 14,603.5
Equity issuance |  | 275.7
Under share option and restricted share plans | 8.3 | 15.0
Balance at the end of the period | 14,902.5 | 14,894.2
Total common share capital | $ 14,902.5 | $ 14,894.2

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