XML 127 R78.htm IDEA: XBRL DOCUMENT v3.19.3
Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Income Tax Disclosure [Abstract]        
Combined federal, state and foreign income tax rate 20.00% 19.00% 21.00% 18.00%
Federal statutory income tax rate, percent     21.00%  
Unrecognized benefits $ 201   $ 201