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) (Allowance for doubtful accounts, USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Allowance for doubtful accounts
     
Activity in the allowance for doubtful accounts      
Balance, beginning of year $ 53 $ 83 $ 48
Net charges to costs and expenses 30 5 56
Write-offs (14) (19) (12)
Other (8) (16) (9)
Balance, end of year $ 61 $ 53 $ 83