SEGMENT INFORMATION - Shared Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 25, 2022	Mar. 26, 2021	Mar. 25, 2022	Mar. 26, 2021
Segment Reporting Information [Line Items]
Net sales	$ (982,573)	$ (639,543)	$ (1,823,374)	$ (1,150,625)
Electrical
Segment Reporting Information [Line Items]
Net sales	(758,347)	(486,924)	(1,398,691)	(873,244)
Safety & Infrastructure
Segment Reporting Information [Line Items]
Net sales	(224,226)	(152,619)	(424,683)	(277,381)
Operating Segments
Segment Reporting Information [Line Items]
Net sales	(982,573)	(639,543)	(1,823,374)	(1,150,625)
Adjusted EBITDA	359,887	205,019	666,866	352,544
Operating Segments | Electrical
Segment Reporting Information [Line Items]
Adjusted EBITDA	330,970	188,826	610,517	322,099
Operating Segments | Safety & Infrastructure
Segment Reporting Information [Line Items]
Net sales		(152,619)		(277,381)
Adjusted EBITDA	28,917	16,193	56,349	30,445
Intersegment Sales
Segment Reporting Information [Line Items]
Net sales	(1,589)	(657)	(2,981)	(1,485)
Intersegment Sales | Electrical
Segment Reporting Information [Line Items]
Net sales	(1,530)	(576)	(2,869)	(1,401)
Intersegment Sales | Safety & Infrastructure
Segment Reporting Information [Line Items]
Net sales	$ (59)	$ (81)	$ (112)	$ (84)