Net (Loss) Income Per Share - Schedule of Basic and Diluted Net Income (loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Net (loss) income attributable to Vir	$ (194,775)	$ (76,493)	$ (335,675)	$ 442,128
Weighted-average shares outstanding, basic (in shares)	134,059,079	132,450,018	133,807,357	132,326,244
Weighted-average effect of dilutive securities:
Options to purchase common stock (in shares)	0	0	0	2,270,834
Restricted shares subject to future vesting (in shares)	0	0	0	44,028
Shares to purchase under Employee Stock Purchase Plan (in shares)	0	0	0	2,734
Weighted-average shares outstanding, diluted (in shares)	134,059,079	132,450,018	133,807,357	134,643,840
Net (loss) income per share, basic (in USD per share)	$ (1.45)	$ (0.58)	$ (2.51)	$ 3.34
Net (loss) income per share, diluted (in USD per share)	$ (1.45)	$ (0.58)	$ (2.51)	$ 3.28