XML 102 R87.htm IDEA: XBRL DOCUMENT v3.10.0.1
Supplemental Data (Other Cash Flow Data and Interest Expense) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Supplemental Data      
Interest paid $ 264 $ 354 $ 315
Income taxes paid $ 395 $ 961 $ 744