Segment Information - Net Sales by Major Product Line (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 25, 2021	Sep. 26, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 982,248	$ 619,105	$ 2,812,988	$ 1,722,192
Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	992,697	625,849	2,839,687	1,744,102
Operating Segments | Piping Systems
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	688,200	409,414	1,947,564	1,128,467
Operating Segments | Industrial Metals
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	182,245	118,831	527,137	338,652
Operating Segments | Climate
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	122,252	97,604	364,986	276,983
Operating Segments | Tube and fittings
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	555,161	320,619	1,548,392	878,764
Operating Segments | Tube and fittings | Piping Systems
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	555,161	320,619	1,548,392	878,764
Operating Segments | Tube and fittings | Industrial Metals
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0	0	0
Operating Segments | Tube and fittings | Climate
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0	0	0
Operating Segments | Brass rod and forgings
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	143,788	89,487	418,024	253,647
Operating Segments | Brass rod and forgings | Piping Systems
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0	0	0
Operating Segments | Brass rod and forgings | Industrial Metals
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	143,788	89,487	418,024	253,647
Operating Segments | Brass rod and forgings | Climate
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0	0	0
Operating Segments | OEM components, tube & assemblies
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	48,646	54,574	170,916	187,494
Operating Segments | OEM components, tube & assemblies | Piping Systems
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	6,943	7,402	23,954	49,509
Operating Segments | OEM components, tube & assemblies | Industrial Metals
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	12,076	11,215	35,819	32,524
Operating Segments | OEM components, tube & assemblies | Climate
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	29,627	35,957	111,143	105,461
Operating Segments | Valves and plumbing specialties
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	126,096	81,393	375,218	200,194
Operating Segments | Valves and plumbing specialties | Piping Systems
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	126,096	81,393	375,218	200,194
Operating Segments | Valves and plumbing specialties | Industrial Metals
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0	0	0
Operating Segments | Valves and plumbing specialties | Climate
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0	0	0
Operating Segments | Flex duct and other HVAC components
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	92,625	61,647	253,843	171,522
Operating Segments | Flex duct and other HVAC components | Piping Systems
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0	0	0
Operating Segments | Flex duct and other HVAC components | Industrial Metals
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0	0	0
Operating Segments | Flex duct and other HVAC components | Climate
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	92,625	61,647	253,843	171,522
Operating Segments | Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	26,381	18,129	73,294	52,481
Operating Segments | Other | Piping Systems
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0	0	0
Operating Segments | Other | Industrial Metals
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	26,381	18,129	73,294	52,481
Operating Segments | Other | Climate
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	0	0	0	0
Intersegment sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ (10,449)	$ (6,744)	$ (26,699)	$ (21,910)