Segment Information - Net Sales by Product Categories, Excluding Intercompany Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Net sales	$ 1,306,267	$ 1,257,158	$ 2,618,325	$ 2,049,052
Pointing Devices
Segment Reporting Information [Line Items]
Net sales	189,014	169,121	371,892	289,590
Keyboards & Combos
Segment Reporting Information [Line Items]
Net sales	236,272	201,617	454,629	346,977
PC Webcams
Segment Reporting Information [Line Items]
Net sales	94,471	102,469	204,389	163,320
Tablet & Other Accessories
Segment Reporting Information [Line Items]
Net sales	80,801	83,086	160,073	129,134
Gaming
Segment Reporting Information [Line Items]
Net sales	330,777	297,711	666,174	479,614
Video Collaboration
Segment Reporting Information [Line Items]
Net sales	231,653	236,704	466,538	366,778
Mobile Speakers
Segment Reporting Information [Line Items]
Net sales	39,492	43,581	67,976	72,590
Audio & Wearables
Segment Reporting Information [Line Items]
Net sales	98,078	114,275	214,685	185,640
Smart Home
Segment Reporting Information [Line Items]
Net sales	5,649	8,573	11,821	15,383
Other
Segment Reporting Information [Line Items]
Net sales	$ 60	$ 21	$ 148	$ 26