Net Loss Per Share - Schedule of Basic and Diluted Net Income (loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Net loss attributable to Vir	$ (213,717)	$ (163,413)	$ (417,371)	$ (499,088)
Weighted-average shares outstanding, basic (in shares)	136,653,753	134,289,620	136,058,223	133,969,878
Weighted-average shares outstanding, diluted (in shares)	136,653,753	134,289,620	136,058,223	133,969,878
Net loss attributable to Vir per share, basic (in USD per share)	$ (1.56)	$ (1.22)	$ (3.07)	$ (3.73)
Net loss attributable to Vir per share, diluted (in USD per share)	$ (1.56)	$ (1.22)	$ (3.07)	$ (3.73)