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Leases - Weighted Average Assumptions (Details)
Mar. 31, 2021
Mar. 31, 2020
Weighted-average remaining lease term    
Operating leases 6 years 6 years 9 months 18 days
Finance leases 2 years 3 months 18 days 3 years 3 months 18 days
Weighted-average discount rate    
Operating leases 2.80% 3.70%
Finance leases 5.20% 5.20%