XML 51 R39.htm IDEA: XBRL DOCUMENT v3.21.2
Basis of Financial Statements - Income Tax (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Income tax expense $ 213 $ 133 $ 555 $ 194
Income tax expense as percentage of earnings before income taxes, percent 23.00% 25.00% 23.00% 23.00%