XML 184 R78.htm IDEA: XBRL DOCUMENT v3.20.4
Leases - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]      
Term of lease   12 years  
Weighted average remaining term   6 years 6 years
Weighted average discount rate used to measure ROU assets and lease liabilities (approximately)   5.00% 6.00%
Rent expense $ 33