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Leases (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Lessee, Lease, Description [Line Items]        
Leases, Renewal Term     5 years  
Operating lease expense $ 1,000,000 $ 1,000,000 $ 3,000,000 $ 3,000,000
Operating lease, impairment loss $ 0   $ 11,000,000  
Maximum [Member]        
Lessee, Lease, Description [Line Items]        
Leases, Remaining Lease Term Years     12 years  
Minimum [Member]        
Lessee, Lease, Description [Line Items]        
Leases, Remaining Lease Term Years     1 year