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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Schedule of Options Outstanding | The following is a continuity schedule of all options outstanding [number of options in the table below are expressed in whole numbers]:
|  | Options outstanding |
|  | Number of options |  |  | Weighted average exercise price |  |  | Number of options exercisable |
Outstanding at December 31, 2010 |  |  | 11,142,450 |  |  | Cdn$ | 34.22 |  |  |  | 3,362,116 |
Exercised [i] |  |  | (2,737,253 | ) |  |  | 33.28 |  |  |  | (2,737,253 | )
Cancelled |  |  | (1,537,830 | ) |  |  | 48.86 |  |  |  | (1,426,164 | )
Vested |  |  | 0 |  |  |  | 0 |  |  |  | 2,868,001 |
Outstanding at December 31, 2011 |  |  | 6,867,367 |  |  | Cdn$ | 31.54 |  |  |  | 2,066,700 |
Granted |  |  | 1,389,000 |  |  |  | 48.22 |  |  |  | 0 |
Exercised [ii] |  |  | (1,525,159 | ) |  |  | 28.46 |  |  |  | (1,525,159 | )
Cancelled |  |  | (107,966 | ) |  |  | 53.14 |  |  |  | (58,967 | )
Vested |  |  | 0 |  |  |  | 0 |  |  |  | 2,745,000 |
Outstanding at December 31, 2012 |  |  | 6,623,242 |  |  | Cdn$ | 35.39 |  |  |  | 3,227,574 |
Granted |  |  | 1,060,000 |  |  |  | 57.02 |  |  |  | 0 |
Exercised [iii] |  |  | (2,805,969 | ) |  |  | 31.99 |  |  |  | (2,805,969 | )
Cancelled |  |  | (119,165 | ) |  |  | 51.46 |  |  |  | (31,667 | )
Vested |  |  | 0 |  |  |  | 0 |  |  |  | 2,457,171 |
Outstanding at December 31, 2013 |  |  | 4,758,108 |  |  | Cdn$ | 41.82 |  |  |  | 2,847,109 |
The total intrinsic value of options exercised during 2013 was $56 million [2012 - $6 million; 2011 - $19 million].
[i] | During 2011, 1,283,334 options were exercised on a cashless basis in accordance with applicable stock option plans. On exercise, cash payments totalling $30 million were made to the stock option holders.
[ii] | During 2012, 1,100,001 options were exercised on a cashless basis in accordance with applicable stock option plans. On exercise, cash payments totalling $19 million were made to the stock option holders.
[iii] | During 2013, 849,999 options were exercised on a cashless basis in accordance with the applicable stock option plans. On exercise, cash payments totalling $23 million were made to the stock option holders.
Summary of Characteristics of Options Outstanding | At December 31, 2013, the outstanding options consist of [number of options in the table below are expressed in whole numbers]:
|  | Options outstanding |
|  | Number of options |  |  | Remaining contractual life [years] |  |  | Number of options exercisable |
$15 to $20 |  |  | 487,008 |  |  |  | 2.2 |  |  |  | 487,008 |
$25 to $30 |  |  | 1,398,853 |  |  |  | 3.2 |  |  |  | 1,398,853 |
$35 to $40 |  |  | 20,000 |  |  |  | 3.4 |  |  |  | 20,000 |
$45 to $50 |  |  | 1,156,324 |  |  |  | 4.3 |  |  |  | 275,325 |
$50 to $55 |  |  | 665,923 |  |  |  | 4.0 |  |  |  | 665,923 |
Over $55 |  |  | 1,030,000 |  |  |  | 6.2 |  |  |  | 0 |
|  |  | 4,758,108 |  |  |  |  |  |  |  | 2,847,109 |
Weighted average exercise price |  | Cdn$ | 41.82 |  |  |  |  |  |  | Cdn$ | 34.33 |
Weighted average life remaining [years] |  |  | 4.31 |  |  |  |  |  |  |  | 3.38 |
Aggregate intrinsic value at December 31, 2013 |  | $ | 198 |  |  |  |  |  |  | $ | 139 |
Fair Value of Stock Options Granted and Compensation Expenses | The weighted average assumptions used in measuring the fair value of stock options granted are as follows:
|  | 2013 |  |  | 2012 |  |  | 2011 |
Risk-free interest rate |  |  | 1.32 | % |  |  | 2.23 | % |  |  | 0 |
Expected dividend yield |  |  | 2.00 | % |  |  | 2.00 | % |  |  | 0 |
Expected volatility |  |  | 34 | % |  |  | 43 | % |  |  | 0 |
Expected time until exercise |  |  | 4.5 years |  |  |  | 4.5 years |  |  |  | 0 |
Weighted average fair value of options granted in year [Cdn$] |  | $ | 14.02 |  |  | $ | 15.37 |  |  | $ | 0 |
Schedule of Reduction in Stated Value of Company's Common Shares | The following is a continuity of the stock that has not been released to the executives and is reflected as a reduction in the stated value of the Company’s Common Shares [number of Common Shares in the table below are expressed in whole numbers]:
|  | Number of shares |  |  | Stated value |
Awarded and not released, December 31, 2010 |  |  | 1,182,736 |  |  | $ | 40 |
Release of restricted stock |  |  | (156,432 | ) |  |  | (5 | )
Awarded and not released, December 31, 2011 |  |  | 1,026,304 |  |  |  | 35 |
Release of restricted stock |  |  | (143,316 | ) |  |  | (5 | )
Awarded and not released, December 31, 2012 |  |  | 882,988 |  |  |  | 30 |
Release of restricted stock |  |  | (152,512 | ) |  |  | (5 | )
Awarded and not released, December 31, 2013 |  |  | 730,476 |  |  | $ | 25 |
Schedule of Restricted Stock Unit Programs Outstanding | The following is a continuity schedule of restricted stock unit programs outstanding [number of stock units in the table below are expressed in whole numbers]:
|  | Equity classified RSUs |  |  | Liability classified RSUs |  |  | Liability classified DSUs |  |  | Total |
Outstanding at December 31, 2010 |  |  | 181,732 |  |  |  | 34,242 |  |  |  | 186,348 |  |  |  | 402,322 |
Granted |  |  | 208,458 |  |  |  | 4,150 |  |  |  | 22,669 |  |  |  | 235,277 |
Dividend equivalents |  |  | 2,022 |  |  |  | 946 |  |  |  | 4,696 |  |  |  | 7,664 |
Redeemed |  |  | (24,486 | ) |  |  | (9,532 | ) |  |  | (15,267 | ) |  |  | (49,285 | )
Outstanding at December 31, 2011 |  |  | 367,726 |  |  |  | 29,806 |  |  |  | 198,446 |  |  |  | 595,978 |
Granted |  |  | 320,131 |  |  |  | 15,364 |  |  |  | 37,456 |  |  |  | 372,951 |
Dividend equivalents |  |  | 1,895 |  |  |  | 1,133 |  |  |  | 5,145 |  |  |  | 8,173 |
Redeemed |  |  | (84,322 | ) |  |  | (26,204 | ) |  |  | (34,124 | ) |  |  | (144,650 | )
Outstanding at December 31, 2012 |  |  | 605,430 |  |  |  | 20,099 |  |  |  | 206,923 |  |  |  | 832,452 |
Granted |  |  | 224,841 |  |  |  | 13,825 |  |  |  | 30,716 |  |  |  | 269,382 |
Dividend equivalents |  |  | 1,262 |  |  |  | 624 |  |  |  | 2,815 |  |  |  | 4,701 |
Redeemed |  |  | (199,679 | ) |  |  | (4,429 | ) |  |  | (113,007 | ) |  |  | (317,115 | )
Outstanding at December 31, 2013 |  |  | 631,854 |  |  |  | 30,119 |  |  |  | 127,447 |  |  |  | 789,420 |
Summary of Stock-Based Compensation Expense Recorded in Selling, General and Administrative Expenses | Stock-based compensation expense recorded in selling, general and administrative expenses related to the above programs is as follows:
|  | 2013 |  |  | 2012 |  |  | 2011 |
Incentive Stock Option Plan |  | $ | 15 |  |  | $ | 19 |  |  | $ | 21 |
Long-term retention |  |  | 4 |  |  |  | 5 |  |  |  | 7 |
Restricted stock unit |  |  | 16 |  |  |  | 14 |  |  |  | 6 |
|  |  | 35 |  |  |  | 38 |  |  |  | 34 |
Fair value adjustment for liability classified DSUs |  |  | 5 |  |  |  | 4 |  |  |  | (3 | )
Incentive Stock Option Plan |  | $ | 40 |  |  | $ | 42 |  |  | $ | 31 |

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