v3.26.1
Business Segments (Information on Operating and Reportable Segments) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Segment Reporting Information, Profit (Loss):      
Total segment revenues $ 1,088,705 $ 1,137,762 $ 1,125,357
Cost of sales 493,127 503,299 500,909
Gross profit 595,578 634,463 624,448
Advertising and marketing 148,782 155,723 153,315
Contribution margin 446,796 478,740 471,133
Other operating expenses 137,387 141,965 128,704
Operating income 309,409 336,775 $ 342,429
Impairment of intangible assets   12,466  
Impairment, Intangible Asset, Statement Of Income Or Comprehensive Income, Extensible Enumeration, Not Disclosed Flag     Consolidated Statements of Income (Loss) and Comprehensive Income (Loss)
North American OTC Healthcare      
Segment Reporting Information, Profit (Loss):      
Total segment revenues 913,576 960,010 $ 958,260
North American OTC Healthcare | Operating Segments      
Segment Reporting Information, Profit (Loss):      
Total segment revenues 913,576 960,010 958,260
Cost of sales 412,699 428,871 429,361
Gross profit 500,877 531,139 528,899
Advertising and marketing 120,847 129,431 131,494
Contribution margin 380,030 401,708 397,405
North American OTC Healthcare | Intersegment Eliminations      
Segment Reporting Information, Profit (Loss):      
Total segment revenues 3,800 3,900 3,700
International OTC Healthcare      
Segment Reporting Information, Profit (Loss):      
Total segment revenues 175,129 177,752 167,097
International OTC Healthcare | Operating Segments      
Segment Reporting Information, Profit (Loss):      
Total segment revenues 175,129 177,752 167,097
Cost of sales 80,428 74,428 71,548
Gross profit 94,701 103,324 95,549
Advertising and marketing 27,935 26,292 21,821
Contribution margin $ 66,766 $ 77,032 $ 73,728