XML 74 R50.htm IDEA: XBRL DOCUMENT v3.21.1
Goodwill and Intangible Assets - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]    
Amortization expense for intangible assets $ 106 $ 114