SEGMENT INFORMATION - Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 476,941	$ 528,418	$ 931,844	$ 1,027,045
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	243,909	244,344	477,396	484,060
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	139,352	179,475	263,100	336,644
All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	93,680	104,599	191,348	206,341
Turbocharge
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	178,328	169,816	349,626	351,578
Targeted Investment
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	163,989	176,154	326,565	334,429
Fuel
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	107,252	114,531	204,506	210,546
Simplify
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 27,372	$ 67,917	$ 51,147	$ 130,492