Perimeter Solutions, SA Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Details) - $ / shares	Sep. 30, 2021	Jun. 30, 2021	Jun. 21, 2021	Dec. 31, 2020
Class Of Stock [Line Items]
Common stock, shares issued	53,045,510			53,045,510
Common stock, par value	$ 1			$ 1
Everarc Holdings Ltd.
Class Of Stock [Line Items]
Common stock, shares issued			40,000
Common stock, par value			$ 1.00
Perimeter Solutions S A
Class Of Stock [Line Items]
Common stock, shares issued	40,000	40,000
Common stock, par value	$ 1.00	$ 1.00