Annual report pursuant to Section 13 and 15(d)

Other Comprehensive Earnings (loss) (Details)

v2.4.0.6
Other Comprehensive Earnings (loss) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax $ (5) $ (39) $ 14  
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax 2 15 (5)  
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax (3) (24) 9  
Other Comprehensive Earnings (Loss), Share of AOCI of Equity Affiliates Before Tax (21)      
Other Comprehensive Earnings (Loss), Share of AOCI of Equity Affiliates Tax 8      
Other Comprehensive Earnings (Loss), Share of AOCI of Equity Affiliates, Net of Tax (13)      
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, before Tax     (34)  
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax     13  
Share Of Other Comprehensive Earnings Loss Of Equity Affiliates 0 2 0  
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax (13) 0 (21)  
Other comprehensive Income (loss) Reattribution beween tracking stocks before tax   3    
Other comprehensive Income (loss) Reattribution between tracking stocks, Tax   (1)    
Other comprehensive Income (loss) Reattribution beween tracking stocks Net of Tax   2    
other comprehensive income (loss), other before tax (2) (5) 2  
other comprehensive income (loss), other tax 1 2 (1)  
other comprehensive income (loss), other net of tax (1) (3) 1  
Other Comprehensive Income (Loss), before Tax (28) (41) 30  
Other Comprehensive Income (Loss), Tax 11 16 (11)  
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax 12 29 54 35
Other Comprehensive Income (Loss), Net of Tax (17) (25) 19  
Accumulated Net Unrealized Investment Gain (Loss) [Member]
        
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax 20 36 60 42
Other Comprehensive Income (Loss), Net of Tax (16) (24) 18  
Accumulated other comprehensive income, other [Member]
        
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax (8) (7) (6) (7)
Other Comprehensive Income (Loss), Net of Tax $ (1) $ (1) $ 1