v2.4.0.8
CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)
In Millions, except Share data, unless otherwise specified
Jun. 30, 2013
USD ($)
Jun. 30, 2013
CHF
Dec. 31, 2012
USD ($)
Dec. 31, 2012
CHF
CONDENSED CONSOLIDATED BALANCE SHEETS        
Accounts receivable, allowance for doubtful accounts (in dollars) $ 20   $ 20  
Materials and supplies, allowance for obsolescence (in dollars) $ 70   $ 66  
Shares, CHF par value (in Swiss francs per share)   15.00   15.00
Shares, authorized 373,830,649 373,830,649 402,282,355 402,282,355
Shares, conditionally authorized 167,617,649 167,617,649 167,617,649 167,617,649
Shares, issued 373,830,649 373,830,649 373,830,649 373,830,649
Shares, outstanding 360,384,335 360,384,335 359,505,251 359,505,251
Treasury shares 2,863,267 2,863,267 2,863,267 2,863,267