Annual report pursuant to Section 13 and 15(d)

SHAREHOLDERS' EQUITY (Details 2)

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SHAREHOLDERS' EQUITY (Details 2) (USD $)
In Millions, except Per Share data, unless otherwise specified
 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2011
Mar. 27, 2011
500 million repurchase program
Dec. 31, 2011
500 million repurchase program
Dec. 31, 2010
500 million repurchase program
Dec. 31, 2009
500 million repurchase program
Dec. 31, 2008
500 million repurchase program
Dec. 31, 2011
1 billion repurchase program
Sep. 25, 2011
1 billion repurchase program
Jun. 26, 2011
1 billion repurchase program
Mar. 27, 2011
1 billion repurchase program
Dec. 31, 2011
1 billion repurchase program
Share repurchase program                      
Shares acquired 6.4 1.1 7.3 3.5 0.4 2.3 1.0 1.9 1.6 0.8 5.3
Repurchases of common stock, average cost (in dollars per share) $ 98.46 $ 104.47   $ 68.57 $ 46.52 $ 55.49 $ 88.17 $ 89.55 $ 110.49 $ 99.14 $ 97.26
Total Cost of Repurchases $ 629 $ 111 $ 500 $ 241 $ 20 $ 128 $ 83 $ 173 $ 183 $ 79 $ 518
Stock repurchase program, remaining authorized repurchase amount $ 482     $ 111 $ 352 $ 372 $ 482 $ 565 $ 738 $ 921 $ 482