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Revenue Recognition - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 1,709,228	$ 1,308,636
United States
Disaggregation of Revenue [Line Items]
Revenue	875,098	886,526
Europe, Middle East and Africa (EMEA)
Disaggregation of Revenue [Line Items]
Revenue	667,606	217,226
Canada
Disaggregation of Revenue [Line Items]
Revenue	25,299	28,673
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue	60,727	81,767
Other
Disaggregation of Revenue [Line Items]
Revenue	80,498	94,444
Operating Segments | Consumer Packaging
Disaggregation of Revenue [Line Items]
Revenue	1,066,593	581,670
Operating Segments | Industrial Paper Packaging
Disaggregation of Revenue [Line Items]
Revenue	557,709	593,060
Operating Segments | United States | Consumer Packaging
Disaggregation of Revenue [Line Items]
Revenue	448,034	422,592
Operating Segments | United States | Industrial Paper Packaging
Disaggregation of Revenue [Line Items]
Revenue	357,586	354,366
Operating Segments | Europe, Middle East and Africa (EMEA) | Consumer Packaging
Disaggregation of Revenue [Line Items]
Revenue	567,024	105,136
Operating Segments | Europe, Middle East and Africa (EMEA) | Industrial Paper Packaging
Disaggregation of Revenue [Line Items]
Revenue	86,109	97,700
Operating Segments | Canada | Consumer Packaging
Disaggregation of Revenue [Line Items]
Revenue	3,865	3,903
Operating Segments | Canada | Industrial Paper Packaging
Disaggregation of Revenue [Line Items]
Revenue	21,434	24,770
Operating Segments | Asia Pacific | Consumer Packaging
Disaggregation of Revenue [Line Items]
Revenue	24,639	24,463
Operating Segments | Asia Pacific | Industrial Paper Packaging
Disaggregation of Revenue [Line Items]
Revenue	35,837	56,950
Operating Segments | Other | Consumer Packaging
Disaggregation of Revenue [Line Items]
Revenue	23,031	25,576
Operating Segments | Other | Industrial Paper Packaging
Disaggregation of Revenue [Line Items]
Revenue	56,743	59,274
All Other
Disaggregation of Revenue [Line Items]
Revenue	84,926	133,906
All Other | United States
Disaggregation of Revenue [Line Items]
Revenue	69,478	109,568
All Other | Europe, Middle East and Africa (EMEA)
Disaggregation of Revenue [Line Items]
Revenue	14,473	14,390
All Other | Canada
Disaggregation of Revenue [Line Items]
Revenue	0	0
All Other | Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue	251	354
All Other | Other
Disaggregation of Revenue [Line Items]
Revenue	$ 724	$ 9,594

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