Annual report pursuant to Section 13 and 15(d)

Pension and Other Post-retirement Benefit Plans - Weighted Average Assumptions (Details)

v3.20.1
Pension and Other Post-retirement Benefit Plans - Weighted Average Assumptions (Details)
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Pension    
Projected benefit obligation:    
Discount rate 1.20% 1.20%
Rate of compensation increase 3.50% 3.50%
Net periodic benefit cost:    
Discount rate 1.20% 1.30%
Rate of compensation increase 3.50% 3.50%
Expected return on plan assets 2.90% 3.00%
Other Benefits    
Projected benefit obligation:    
Discount rate 2.50% 3.30%
Rate of compensation increase 0.00% 0.00%
Net periodic benefit cost:    
Discount rate 3.30% 3.50%
Rate of compensation increase 0.00% 0.00%
Expected return on plan assets 0.00% 0.00%