Segment Reporting - Segment Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2022	Oct. 03, 2021	Oct. 02, 2022	Oct. 03, 2021
Segment Reporting Information [Line Items]
Net sales	$ 1,890,216	$ 1,415,193	$ 5,574,530	$ 4,151,251
Operating profit	181,942	126,512	548,480	382,112
Restructuring/Asset impairment charges	(20,652)	(3,488)	(43,357)	(8,889)
Amortization of acquisition intangibles	(20,690)	(12,257)	(60,361)	(37,117)
Other non-base (charges)/income, net	(1,807)	7,570	(83,838)	294
Consumer Packaging
Segment Reporting Information [Line Items]
Net sales	1,030,549	598,969	2,888,630	1,779,525
Industrial Paper Packaging
Segment Reporting Information [Line Items]
Net sales	661,452	635,230	2,087,981	1,809,159
All Other
Segment Reporting Information [Line Items]
Net sales	198,215	180,994	597,919	562,567
Operating Segments
Segment Reporting Information [Line Items]
Operating profit	225,091	134,687	736,036	427,824
Operating Segments | Consumer Packaging
Segment Reporting Information [Line Items]
Net sales	1,030,549	598,969	2,888,630	1,779,525
Operating profit	127,859	66,341	440,889	212,997
Operating Segments | Industrial Paper Packaging
Segment Reporting Information [Line Items]
Net sales	661,452	635,230	2,087,981	1,809,159
Operating profit	81,859	55,451	248,721	167,568
Operating Segments | All Other
Segment Reporting Information [Line Items]
Net sales	198,215	180,994	597,919	562,567
Operating profit	15,373	12,895	46,426	47,259
Intersegment Sales
Segment Reporting Information [Line Items]
Net sales	38,131	31,901	114,016	94,514
Intersegment Sales | Consumer Packaging
Segment Reporting Information [Line Items]
Net sales	1,663	1,608	5,189	4,460
Intersegment Sales | Industrial Paper Packaging
Segment Reporting Information [Line Items]
Net sales	33,936	27,975	101,072	82,571
Intersegment Sales | All Other
Segment Reporting Information [Line Items]
Net sales	$ 2,532	$ 2,318	$ 7,755	$ 7,483