Current report filing

BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3)

v3.19.2
BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Activity in the allowance for doubtful accounts      
Balance at beginning of year $ 493 $ 466 $ 352
Net charges to costs and expenses 31 32 126
Write-offs (9) (12) (10)
Other (14) 7 (2)
Balance at end of year $ 501 $ 493 $ 466