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ACCOUNTING POLICIES (Details 6) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Jun. 30, 2013
Mar. 31, 2013
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Impact of previously issued consolidated balance sheets                  
Cash and cash investments $ 1,028 $ 828 $ 889 $ 1,612 $ 1,491 $ 1,223 $ 1,040 $ 1,353 $ 1,425
Short-term bank deposits           321 311 303  
Total current assets           3,468 3,217 3,429  
Impact of previously issued consolidated statement of cash flows                  
Net cash (for) investing activities 62 70 (17) 37 10 (77) (29) (84) (244)
Effect of exchange rate changes on cash and cash investments           (3) 11 (8) (7)
Decrease in cash and cash investments           183 (313) (72) 174
Impact of previously issued consolidated statement of cash flows                  
Cash and cash investments 1,028 828 889 1,612 1,491 1,223 1,040 1,353 1,425
Short-term bank deposits 195 204 277 241 297        
Net cash (for) investing activities 62 70 (17) 37 10 (77) (29) (84) (244)
As Reported
                 
Impact of previously issued consolidated balance sheets                  
Cash and cash investments 1,223 1,032 1,166 1,853 1,788   1,351 1,656  
Total current assets             3,217 3,429  
Impact of previously issued consolidated statement of cash flows                  
Net cash (for) investing activities (51) (30) (42) (15) (2)   (27) (61) (109)
Effect of exchange rate changes on cash and cash investments             17 (18) (14)
Decrease in cash and cash investments             (305) (59) 302
Impact of previously issued consolidated statement of cash flows                  
Cash and cash investments 1,223 1,032 1,166 1,853 1,788   1,351 1,656  
Net cash (for) investing activities $ (51) $ (30) $ (42) $ (15) $ (2)   $ (27) $ (61) $ (109)
Foreign short-term bank deposits | Minimum
                 
Term           3 months      
Foreign short-term bank deposits | Maximum
                 
Term           12 months