Annual report pursuant to Section 13 and 15(d)

INVESTMENTS (Details 4)

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INVESTMENTS (Details 4) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Investments Disclosure [Abstract]      
Other-than-temporary impairment charges, available-for-sale securities $ 17 $ 26  
Proceeds from Sale of Available-for-sale Securities 37   157
Gross realized gains 5   44
Gross realized losses 1   2
Donated investments, cost basis     7
Donated investments, fair value     $ 106