Leases - Lease Weighted Average Terms and Rates (Details)	Dec. 31, 2020	Dec. 31, 2019
Weighted-average remaining lease term
Operating Leases	7 years	8 years
Finance Leases	10 years	11 years
Weighted-average discount rate
Operating leases	3.40%	3.60%
Finance leases	4.95%	4.90%