Pension and Employee Benefit Plans, Valuation Assumptions (Details) - Pension Plans [Member]	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
U.S. Plans [Member]
Assumptions Used in Pension Plan Calculations [Abstract]
Weighted average discount rate used to determine benefit obligations	3.20%	3.40%
Weighted average discount rate used to determine costs	3.40%	4.00%	4.00%
Non-U.S Plans [Member]
Assumptions Used in Pension Plan Calculations [Abstract]
Weighted average discount rate used to determine benefit obligations	1.00%	1.00%
Weighted average discount rate used to determine costs	1.40%	1.70%	1.90%