Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 12, 2021
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2021
Entity File Number	001-39945
Entity Registrant Name	Priveterra Acquisition Corp.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	85-3940478
Entity Address, Address Line One	300 SE 2nd Street, Suite 600
Entity Address, City or Town	Fort Lauderdale
Entity Address State Or Province	FL
City Area Code	754
Local Phone Number	220-9229
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
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 Central Index Key	0001837607
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Amendment Flag	false
Class A Common Stock
Document Information [Line Items]
Title of 12(b) Security	Class A common stock, par value $0.0001 per share
Trading Symbol	PMGM
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		31,000,000
Redeemable Warrants Exercisable For Class Common Stock
Document Information [Line Items]
Title of 12(b) Security	Redeemable warrants, each warrant exercisable for one share of Class A common stock at an exercise price of $11.50
Trading Symbol	PMGMW
Security Exchange Name	NASDAQ
One-third of Redeemable Warrants Exercisable For Class Common Stock
Document Information [Line Items]
Title of 12(b) Security	Units, each consisting of one share of Class A common stock and one-third of one redeemable warrant
Trading Symbol	PMGMU
Security Exchange Name	NASDAQ
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		8,625,000