Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 31, 2022	Jun. 30, 2021
Entity Listings [Line Items]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Amendment Flag	false
Document Period End Date	Dec. 31, 2021
Entity File Number	001-40242
Entity Registrant Name	LONGVIEW ACQUISITION CORP. II
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	85-3650296
Entity Address, Address Line One	767 Fifth Avenue
Entity Address, Address Line Two	44th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10153
Entity Well-known Seasoned Issuer	No
City Area Code	212
Entity Voluntary Filers	No
Local Phone Number	812-4700
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Central Index Key	0001832300
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	true
Entity Public Float			$ 622,300,000
Auditor Name	WithumSmith+Brown, PC
Auditor Location	New York, New York
Auditor Firm ID	100
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Units, each consisting of one share of Class A Common Stock, $0.0001 par value, and one-fifth of one redeemable Warrant [Member]
Entity Listings [Line Items]
Title of 12(b) Security	Units, each consisting of one share of Class A Common Stock, $0.0001 par value, and one-fifth of one redeemable Warrant
Trading Symbol	LGV.U
Security Exchange Name	NYSE
Class A Common Stock [Member]
Entity Listings [Line Items]
Title of 12(b) Security	Class A Common Stock, par value $0.0001 per share
Trading Symbol	LGV
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		69,000,000
Redeemable Warrants, each whole Warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share [Member]
Entity Listings [Line Items]
Title of 12(b) Security	Redeemable Warrants, each whole Warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50 per share
Trading Symbol	LGV WS
Security Exchange Name	NYSE
Class B Common Stock [Member]
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		17,250,000