XML 87 R77.htm IDEA: XBRL DOCUMENT v3.21.1
Income Taxes - Income Tax Provision and Effective Income Tax Rate (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Income Tax Disclosure [Abstract]    
Income tax provision $ 18 $ 79
Effective income tax rate 5.60% 17.10%