XML 97 R87.htm IDEA: XBRL DOCUMENT v3.21.2
Income Taxes - Additional Information (Detail)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Income Tax Disclosure [Abstract]        
Effective tax rates 20.40% 19.90% 23.90% 22.40%