Restructuring Costs (Narrative) (Details) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment costs	[1]	$ 10,457	$ 22,577	$ 7,543
Tobacco Operations
Restructuring Cost and Reserve [Line Items]
Employee termination benefits		2,200
Restructuring and impairment costs			6,500	7,500
Ingredients Operations
Restructuring Cost and Reserve [Line Items]
Employee termination benefits			600
Impairment of Long-Lived Assets Held-for-use			16,100
Nonoperating Gains (Losses)		(1,200)
Africa | Tobacco Operations
Restructuring Cost and Reserve [Line Items]
Employee termination benefits			4,400	1,800
Impairment of Long-Lived Assets Held-for-use				2,200
NORTH CAROLINA | Tobacco Operations
Restructuring Cost and Reserve [Line Items]
Employee termination benefits				$ 3,400
Non-US [Member] | Tobacco Operations
Restructuring Cost and Reserve [Line Items]
Employee termination benefits			1,200
Tanzania | Tobacco Operations
Restructuring Cost and Reserve [Line Items]
Impairment of Long-Lived Assets Held-for-use		$ 9,400
Business Exit Costs			$ 900

[1] Restructuring and impairment costs are excluded from reportable segment operating income, but are included in consolidated operating income in the consolidated statements of income (see Note 4)