Leases - Other information (Details)	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating leases - Weighted average remaining lease term (in years)	13 years 4 months 24 days	13 years 8 months 12 days
Finance leases - Weighted average remaining lease term (in years)	10 years 3 months 18 days	11 years 4 months 24 days
Operating leases - Weighted average discount rate	5.20%	5.10%
Finance leases - Weighted average discount rate	4.30%	4.30%