Annual report pursuant to Section 13 and 15(d)

BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3)

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BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Activity in the allowance for doubtful accounts      
Balance, beginning of year $ 48 $ 55 $ 51
Net charges to costs and expenses 56 21 24
Write-offs (12) (18) (22)
Other (9) (10) 2
Balance, end of year $ 83 $ 48 $ 55