v2.4.0.8
Shareholders' Equity (Details)
 0 Months Ended 1 Months Ended 12 Months Ended
May 31, 2012
Mar. 21, 2012
USD ($)
Nov. 30, 2013
USD ($)
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May 31, 2013
USD ($)
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Dec. 31, 2011
USD ($)
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Dec. 31, 2011
CHF
May 31, 2009
CHF
Dec. 31, 2013
USD ($)
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Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
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Dec. 31, 2013
CHF
May 31, 2011
USD ($)
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Distribution of qualifying additional paid-in capital                        
Cash distribution approved in the form of additional paid-in capital (in dollars per share)       $ 2.24               $ 3.16
Cash distribution proposed in the form of additonal paid-in capital (in dollars per share)     $ 3.00                  
Number of quarterly installments (in installments)     4 4               4
Amount of installment (in dollars per share)       $ 0.56               $ 0.79
Liability for distribution payable       $ 808,000,000                
Cash distribution proposed in the form of additonal paid-in capital     1,100,000,000                  
Number of installments paid (in installments)         3 3   3   3    
Installment of dividend paid   276,000,000           606,000,000 276,000,000 759,000,000    
Unpaid distribution payable               202,000,000        
Share issuances                        
Issuance of shares in exchange for noncontrolling interest 8,700,000               8,700,000      
Issuance of shares (in shares)         29,900,000 29,900,000            
Price per share issued under public offering         $ 40.50 37.19            
Share repurchase USD exchange rate         1.00     1.00 1.00 1.00    
Share repurchase CHF average exchange rate           0.9183            
Proceeds from issuance of shares, net of underwriting discounts and commissions, issuance costs and the Swiss Federal Issuance tax         1,200,000,000         1,211,000,000    
Shares held in treasury                        
Authorized amount for repurchase of shares             3,500,000,000 3,900,000,000        
Share repurchase USD exchange rate         1.00     1.00 1.00 1.00    
Share repurchase CHF exchange rate                     0.89  
Treasury shares               2,863,267 2,863,267      
Shares held by subsidiary                        
Number of subsidiaries to whom shares were issued               1        
Number of shares held by subsidiary               10,200,000 11,500,000