Leases - Schedule of Weighted Average Remaining Term and Discount Rates (Detail)	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating leases, Weighted average remaining lease term (years)	6 years 3 months 14 days	6 years 6 months 29 days
Finance leases, Weighted average remaining lease term (years)	2 years 8 months 26 days	2 years 2 months 8 days
Operating leases, Weighted average discount rate	3.49%	3.86%
Finance leases, Weighted average discount rate	3.61%	4.84%