DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Details) - USD ($) $ / shares in Units, $ in Millions	Sep. 25, 2017	Sep. 30, 2021	Aug. 02, 2021	Jul. 31, 2021	Jul. 28, 2021	Jun. 30, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Common unit outstanding (in shares)		108,724,422		108,724,422			108,724,422
Common stock outstanding (in shares)		117,547,916			108,724,387		0
Previously Reported
Business Acquisition [Line Items]
Common unit outstanding (in shares)						10
Traeger Pellet Grills Holsings LLC
Business Acquisition [Line Items]
Equity stake percentage	100.00%
Total purchase consideration, net of cash acquired	$ 954
IPO
Business Acquisition [Line Items]
Sale of stock, price per share (in dollars per share)			$ 18.00