XML 85 R45.htm IDEA: XBRL DOCUMENT v3.19.2
Operating Leases - (Narratives) (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Leases [Abstract]    
Operating lease cost $ 33 $ 64
Variable lease cost $ 8 15
Operating lease payments   61
Right of use asset obtained in exchange for operating lease liability   $ 37
Weighted average lease term 5 years 4 months 24 days 5 years 4 months 24 days
Weighted average discount rate (percent) 3.70% 3.70%