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SHARE CAPITAL - EARNINGS PER COMMON SHARES (Details) - CAD / shares | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014
EARNINGS PER COMMON SHARE |  |
Prorata weighted average interest in entity's own common shares | 12,000,000 | 12,000,000
Weighted average number of shares outstanding diluted |  |
Weighted average shares outstanding | 847,000,000 | 829,000,000
Effect of dilutive options (in shares) | 11,000,000 | 11,000,000
Diluted weighted average shares outstanding | 858,000,000 | 840,000,000
Stock options |  |
Weighted average number of shares outstanding diluted |  |
Antidilutive securities excluded from the diluted earnings per common share calculation (in shares) | 7,960,028 | 6,058,580
Weighted average exercise price of antidilutive securities (in Canadian dollars per share) | CAD 55.81 | CAD 48.78

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 28A -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1500-109256 + Details
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