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Leases (Operating Leases Weighted Average Remaining Lease Term and Discount Rate) (Details)
9 Months Ended 12 Months Ended
Dec. 31, 2021
Mar. 31, 2021
Operating Leases Remaining Lease Term And Weighted Average Discount Rate [Abstract]    
Remaining Lease Term Operating Lease Weighted Average 16 14.7
Operating Lease Weighted Average Discount Rate Percent 4.60% 4.60%