Share Capital - Additional Information (Detail)	1 Months Ended			12 Months Ended
	Feb. 29, 2024 USD ($) $ / shares	Jul. 31, 2021 USD ($)	Jan. 31, 2021 USD ($)	Dec. 31, 2024 USD ($) $ / shares	Dec. 31, 2023 USD ($) $ / shares	Dec. 31, 2022 USD ($)	Dec. 31, 2024 SFr / shares shares	Dec. 31, 2023 SFr / shares shares	Jun. 08, 2023 CHF (SFr) SFr / shares
Class of Stock [Line Items]
Common shares, nominal value | (per share)	$ 71.5						SFr 0.03	SFr 0.03
Proceeds from issuance of common shares	$ 280,000,000			$ 300,695,000	$ 32,721,000	$ 970,000
Received net proceeds	279,000,000
Stamp taxes due on issuance of common stock	$ 2,800,000
Common stock, voting rights				one vote for each common share
Dividends declared and paid				$ 0
Common shares employee equity incentive plans | shares							20,925,932
Bond [Member]
Class of Stock [Line Items]
Registered common shares | shares							8,202,832
Sales Agreement With Jefferies LLC [Member]
Class of Stock [Line Items]
Common shares issued | shares							1,900,000
Proceeds from issuance of common shares				233,200,000
Equity issuance costs				$ 3,100,000
Average issue price of common shares | $ / shares				$ 122.73
Common Shares [Member]
Class of Stock [Line Items]
Common shares, nominal value | SFr / shares							SFr 0.03		SFr 0.03
Registered share capital | shares							88,517,810
Common Shares [Member] | Maximum [Member]
Class of Stock [Line Items]
Common stock share capital value | SFr									SFr 3,100,452.06
Capital Band [Member]
Class of Stock [Line Items]
Common shares issued | shares							14,830,592
2021 ATM [Member] | Sales Agreement With Jefferies LLC [Member]
Class of Stock [Line Items]
Common shares issued | shares							400,000	500,000
Proceeds from issuance of common shares				$ 21,700,000	32,700,000
Equity issuance costs				300,000	400,000
Payments of stamp taxes related to securities				$ 200,000	$ 300,000
Average issue price of common shares | $ / shares				$ 55.81	$ 72.32
2021 ATM [Member] | Sales Agreement With Jefferies LLC [Member] | Maximum [Member]
Class of Stock [Line Items]
Aggregate estimated gross proceeds		$ 378,600,000	$ 600,000,000	$ 363,700,000