XML 53 R43.htm IDEA: XBRL DOCUMENT v3.19.1
Income Taxes (Provision for Income Taxes) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Income Taxes [Abstract]    
Provision for income taxes $ (76) $ (124)
Effective tax rate 13.20% 26.70%