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Consolidated Statements of Changes in Equity (USD $)
In Millions, unless otherwise specified
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Retained Earnings
Preferred and Preference Stock
Noncontrolling Interests
Balance at Dec. 31, 2008 $ 7,813 $ 2,168 $ 532 $ (14) $ 3,827 $ 920 $ 380
Changes in Equity              
Net income 1,371       1,277   94
Other comprehensive income (loss) (5)     (5)      
Dividends declared on common stock (300)       (300)    
Dividends declared on preferred and preference stock (51)       (51)    
Distributions to noncontrolling interests (125)           (125)
Stock-based compensation - net 4   7   (3)    
Noncash stock-based compensation and other 8   12   (4)    
Balance at Dec. 31, 2009 8,715 2,168 551 (19) 4,746 920 349
Changes in Equity              
Net income 1,092       1,092    
Other comprehensive income (loss) (6)     (6)      
Deconsolidation of variable interest entities (349)           (349)
Dividends declared on common stock (200)       (200)   0
Dividends declared on preferred and preference stock (52)       (52)    
Distributions to noncontrolling interests 0            
Stock-based compensation - net (5)   4   (9)    
Noncash stock-based compensation and other 12   17   (5)    
Balance at Dec. 31, 2010 9,207 2,168 572 (25) 5,572 920 0
Changes in Equity              
Net income 1,144       1,144    
Other comprehensive income (loss) 1     1      
Dividends declared on common stock (461)       (461)    
Dividends declared on preferred and preference stock (59)       (59)    
Distributions to noncontrolling interests 0            
Stock-based compensation and other (10)   11   (21)    
Noncash stock-based compensation and other 13   15   (2)    
Issuance of preference stock 123   (2)     125  
Balance at Dec. 31, 2011 $ 9,958 $ 2,168 $ 596 $ (24) $ 6,173 $ 1,045 $ 0