XML 89 R77.htm IDEA: XBRL DOCUMENT v3.21.1
Leases (Schedule of Information Regarding Operating Leases) (Details)
Dec. 31, 2020
Dec. 31, 2019
Leases [Line Items]    
Weighted-average discount rate 3.54% 3.78%
Range of lease renewal options   20 years
Weighted-average remaining lease term 27 years 7 months 6 days 31 years 10 months 24 days
Minimum [Member]    
Leases [Line Items]    
Range of lease expiration dates 2 years 4 years 6 months
Range of lease renewal options 5 years  
Maximum [Member]    
Leases [Line Items]    
Range of lease expiration dates 15 years 16 years
Range of lease renewal options 20 years