Condensed Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Annual Incentive Plan	Common Stock	Common Stock A&R Plan	Common Stock Annual Incentive Plan	Additional Paid-In Capital	Additional Paid-In Capital Annual Incentive Plan	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance, shares (in shares) at Mar. 31, 2023			461,199,962
Beginning balance at Mar. 31, 2023	$ 713,939		$ 46			$ 2,220,897		$ (620)	$ (1,506,384)
Issuance of common stock upon exercise of stock options (in shares)			180,718
Issuance of common stock upon exercise of stock options	85					85
Issuance of common stock upon release of restricted stock units under the 23andMe Second Amended and Restated Annual Incentive Plan (in shares)				1,812,802	8,961,053
Issuance of common stock upon release of restricted stock units under the 23andMe Second Amended and Restated Annual Incentive Plan		$ 18,630			$ 1		$ 18,629
Net share settlements for stock-based minimum tax withholdings (in shares)			(58,985)
Net share settlements for stock-based minimum tax withholdings	(121)					(121)
Stock-based compensation expense	47,915					47,915
Other comprehensive loss	(334)							(334)
Net loss	(104,624)								(104,624)
Ending balance, shares (in shares) at Jun. 30, 2023			472,095,550
Ending balance at Jun. 30, 2023	675,490		$ 47			2,287,405		$ (954)	(1,611,008)
Beginning balance, shares (in shares) at Mar. 31, 2024			490,119,393
Beginning balance at Mar. 31, 2024	$ 188,520		$ 49			2,361,559			(2,173,088)
Issuance of common stock upon exercise of stock options (in shares)	137,776		137,776
Issuance of common stock upon exercise of stock options	$ 58					58
Issuance of common stock upon release of restricted stock units under the 23andMe Second Amended and Restated Annual Incentive Plan (in shares)				3,696,750	12,144,435
Issuance of common stock upon release of restricted stock units under the 23andMe Second Amended and Restated Annual Incentive Plan		$ 6,451			$ 2		$ 6,449
Net share settlements for stock-based minimum tax withholdings (in shares)			(88,301)
Net share settlements for stock-based minimum tax withholdings	(48)					(48)
Stock-based compensation expense	17,923					17,923
Other comprehensive loss	0
Net loss	(69,400)								(69,400)
Ending balance, shares (in shares) at Jun. 30, 2024			506,010,053
Ending balance at Jun. 30, 2024	$ 143,504		$ 51			$ 2,385,941			$ (2,242,488)