Goodwill (Details) $ in Thousands	6 Months Ended
	Sep. 30, 2015 USD ($)
Goodwill [Roll Forward]
Balance — March 31, 2015	$ 290,651
Adjustments	305
Effects of foreign currency exchange rates	(1,895)
Balance — September 30, 2015	289,061
North American OTC Healthcare
Goodwill [Roll Forward]
Balance — March 31, 2015	263,411
Adjustments	305
Effects of foreign currency exchange rates	0
Balance — September 30, 2015	263,716
International OTC Healthcare
Goodwill [Roll Forward]
Balance — March 31, 2015	20,440
Adjustments	0
Effects of foreign currency exchange rates	(1,895)
Balance — September 30, 2015	18,545
Household Cleaning
Goodwill [Roll Forward]
Balance — March 31, 2015	6,800
Adjustments	0
Effects of foreign currency exchange rates	0
Balance — September 30, 2015	$ 6,800