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Consolidated Statements of Changes in Equity (USD $)
In Millions, except Share data, unless otherwise specified
Total
Common Shares
Contributed Surplus
Retained Earnings
AOCI
Non- controlling Interest
Beginning Balance at Dec. 31, 2008 $ 7,253 $ 3,771 $ 34 $ 3,277 $ 171 [1] $ 0
Beginning Balance, shares at Dec. 31, 2008   223,800,000        
Net income (loss) (453)     (453)    
Other comprehensive (loss) income 514       514 [1]  
Shares issued (repurchased):            
Exercise of stock options 2 2        
Exercise of stock options, shares 93,578 100,000        
Release of restricted stock   6 (6)      
Redemption of restricted stock units [note 18] (6)   (6)      
Stock-based compensation expense [note 18] 11   11      
Settlement of stock options [note18] (1)   (1)      
Dividends paid (21)     (21)    
Ending Balance at Dec. 31, 2009 7,299 3,779 32 2,803 685 [1] 0
Ending Balance, shares at Dec. 31, 2009   223,900,000        
Net income (loss) 1,003     1,003    
Other comprehensive (loss) income 70       70 [1]  
Contribution to subsidiaries by non-controlling interests 3         3
Shares issued (repurchased):            
Exercise of stock options 48 58 (10)      
Exercise of stock options, shares 1,504,616 1,500,000        
Release of restricted stock   6 (6)      
Repurchase and cancellation under normal course issuer bid [note 19] (27) (11)   (13) (3) [1]  
Repurchase and cancellation under normal course issuer bid, shares [note 19]   (800,000)        
Issued under the Arrangement, [note 3] 666 666        
Issued under the Arrangement, shares [note 3]   18,000,000        
Repurchase of Class B shares [note 3] (976)     (976)    
Stock-based compensation expense [note 18] 52   52      
Settlement of stock options [note18] (12)   (12)      
Dividends paid (100) 2   (102)    
Ending Balance at Dec. 31, 2010 8,026 4,500 56 2,715 752 [1] 3
Ending Balance, shares at Dec. 31, 2010   242,600,000        
Net income (loss) 1,015     1,018   (3)
Other comprehensive (loss) income (289)       (289) [1]  
Contribution to subsidiaries by non-controlling interests 20         20
Acquisition of subsidiaries 7         7
Shares issued (repurchased):            
Exercise of stock options 59 69 (10)      
Exercise of stock options, shares 2,737,253 1,400,000        
Release of restricted stock   6 (6)      
Repurchase and cancellation under normal course issuer bid [note 19] (407) (204)   (162) (41) [1]  
Repurchase and cancellation under normal course issuer bid, shares [note 19]   (10,700,000)        
Stock-based compensation expense [note 18] 31   31      
Settlement of stock options [note18] (24)   (8) (16)    
Dividends paid (236) 2   (238)    
Ending Balance at Dec. 31, 2011 $ 8,202 $ 4,373 $ 63 $ 3,317 $ 422 [1] $ 27
Ending Balance, shares at Dec. 31, 2011   233,300,000        
[1] AOCI is Accumulated Other Comprehensive Income