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Leases - Narrative (Details)
Sep. 30, 2021
Dec. 31, 2020
Lessee, Lease, Description [Line Items]    
Weighted average discount rate 2.40% 2.70%
Minimum    
Lessee, Lease, Description [Line Items]    
Weighted average discount rate 1.00%  
Maximum    
Lessee, Lease, Description [Line Items]    
Weighted average discount rate 9.00%