XML 77 R67.htm IDEA: XBRL DOCUMENT v3.19.1
Cash Flow Information (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Supplemental Cash Flow Elements [Abstract]    
Interest paid $ 11 $ 12
Income taxes paid 9 8
Treasury stock purchases settled after the balance sheet date $ 0 $ 14