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Leases Supplemental Lease Information (Details)
Dec. 31, 2020
Dec. 31, 2019
Supplemental Lease Information [Line Items]    
Weighted average remaining lease term, operating leases 8 years 6 years
Weighted average remaining lease term, finance leases 2 years 2 years
Weighted average discount rate, operating leases 2.30% 3.40%
Weighted average discount rate, finance leases 1.60% 2.10%