Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Assets:
Money market funds	$ 4,011	$ 156,864
Trading securities associated with deferred compensation plans	12,635	16,315
Forward foreign currency exchange contracts	314	540
Total financial assets measured and reported at fair value	16,960	173,719
Liabilities:
Guarantees of bank loans to tobacco growers	103	803
Acquisition-related contingent consideration obligations - short-term	4,173
Acquisition-related contingent consideration obligations - long-term	2,532
Interest rate swap agreements	37,163	6,351
Forward foreign currency exchange contracts	15,842	386
Total financial liabilities measured and reported at fair value	59,813	7,540
Level 1 [Member]
Assets:
Money market funds	0	0
Trading securities associated with deferred compensation plans	12,635	16,315
Forward foreign currency exchange contracts	0	0
Total financial assets measured and reported at fair value	12,635	16,315
Liabilities:
Guarantees of bank loans to tobacco growers	0	0
Acquisition-related contingent consideration obligations - short-term	0
Acquisition-related contingent consideration obligations - long-term	0
Interest rate swap agreements	0	0
Forward foreign currency exchange contracts	0	0
Total financial liabilities measured and reported at fair value	0	0
Level 2 [Member]
Assets:
Money market funds	0	0
Trading securities associated with deferred compensation plans	0	0
Forward foreign currency exchange contracts	314	540
Total financial assets measured and reported at fair value	314	540
Liabilities:
Guarantees of bank loans to tobacco growers	0	0
Acquisition-related contingent consideration obligations - short-term	0
Acquisition-related contingent consideration obligations - long-term	0
Interest rate swap agreements	37,163	6,351
Forward foreign currency exchange contracts	15,842	386
Total financial liabilities measured and reported at fair value	53,005	6,737
Level 3 [Member]
Assets:
Money market funds	0	0
Trading securities associated with deferred compensation plans	0	0
Forward foreign currency exchange contracts	0	0
Total financial assets measured and reported at fair value	0	0
Liabilities:
Guarantees of bank loans to tobacco growers	103	803
Acquisition-related contingent consideration obligations - short-term	4,173
Acquisition-related contingent consideration obligations - long-term	2,532
Interest rate swap agreements	0	0
Forward foreign currency exchange contracts	0	0
Total financial liabilities measured and reported at fair value	6,808	803
Fair Value Measured at Net Asset Value Per Share [Member]
Assets:
Money market funds	4,011	156,864
Trading securities associated with deferred compensation plans	0	0
Forward foreign currency exchange contracts	0	0
Total financial assets measured and reported at fair value	4,011	156,864
Liabilities:
Guarantees of bank loans to tobacco growers	0	0
Acquisition-related contingent consideration obligations - short-term	0
Acquisition-related contingent consideration obligations - long-term	0
Interest rate swap agreements	0	0
Forward foreign currency exchange contracts	0	0
Total financial liabilities measured and reported at fair value	$ 0	$ 0