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Goodwill (Schedule of Changes) (Details) - USD ($) $ in Thousands				12 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2021	Mar. 31, 2023	Mar. 31, 2022
Goodwill [Roll Forward]
Goodwill, gross, beginning				$ 744,274	$ 743,037
Accumulated impairment loss, beginning				(165,298)	(164,958)
Goodwill, net, beginning				578,976	578,079
Adjustment related to acquisition					1,648
Adjustment related to acquisition				(550)
Effects of foreign currency exchange rates				(2,068)	(411)
Impairment loss				(48,805)	(340)
Goodwill, gross, ending				741,656	744,274
Accumulated impairment loss, ending				(214,103)	(165,298)
Goodwill, net, ending				527,553	578,976
North American OTC Healthcare
Goodwill [Roll Forward]
Goodwill, gross, beginning				712,002	710,354
Accumulated impairment loss, beginning				(163,711)	(163,711)
Goodwill, net, beginning				548,291	546,643
Adjustment related to acquisition					1,648
Adjustment related to acquisition				(550)
Effects of foreign currency exchange rates				0	0
Impairment loss	$ (48,800)			(48,805)	0
Goodwill, gross, ending				711,452	712,002
Accumulated impairment loss, ending				(212,516)	(163,711)
Goodwill, net, ending				498,936	548,291
International OTC Healthcare
Goodwill [Roll Forward]
Goodwill, gross, beginning				32,272	32,683
Accumulated impairment loss, beginning				(1,587)	(1,247)
Goodwill, net, beginning				30,685	31,436
Adjustment related to acquisition					0
Adjustment related to acquisition				0
Effects of foreign currency exchange rates				(2,068)	(411)
Impairment loss		$ (300)	$ (1,200)	0	(340)
Goodwill, gross, ending				30,204	32,272
Accumulated impairment loss, ending				(1,587)	(1,587)
Goodwill, net, ending				$ 28,617	$ 30,685