XML 108 R87.htm IDEA: XBRL DOCUMENT v3.8.0.1
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES      
Network and IT costs $ 1,185 $ 1,043 $ 1,017
Personnel costs 927 775 848
Customer associated costs 893 822 860
Losses on receivables 59 58 51
Taxes, other than income taxes 219 244 227
Other 465 726 1,560
Total selling, general and administrative expenses 3,748 3,668 4,563
Reduction in selling, general and administrative expense 106    
Operating lease expense $ 444 $ 408 $ 385