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Employee Benefit Plans - Additional Information (Details) - USD ($)
 3 Months Ended
Apr. 28, 2021
Apr. 04, 2021
Mar. 29, 2020
Defined Benefit Plan Disclosure [Line Items]      
Contributions   $ 3,673,000 $ 2,309,000
Expected contributions for remainder of fiscal year   13,500,000  
Settlement losses recognized     623,000
Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Settlement losses recognized   0 623,000
Pension Plan | Sonoco Retirement Contribution      
Defined Benefit Plan Disclosure [Line Items]      
Contributions   22,665,000 22,503,000
Expected contributions for remainder of fiscal year   0  
Recognized expense related to the plan   6,335,000 $ 5,978,000
Pension Plan | Sonoco Pension Plan for Inactive Participants      
Defined Benefit Plan Disclosure [Line Items]      
Expected contributions for remainder of fiscal year   150,000,000  
Estimated reduction of tax payments   38,000,000  
Non-cash settlement charges expected to be incurred next year   $ 560,000,000  
Pension Plan | Sonoco Pension Plan for Inactive Participants | Subsequent Event      
Defined Benefit Plan Disclosure [Line Items]      
Contributions $ 50,000,000    
Pension Plan | United States | Sonoco Retirement Contribution      
Defined Benefit Plan Disclosure [Line Items]      
Employer matching contribution, percent of employees' gross pay (percent)   4.00%  
Employer matching contribution, percent of employees' gross pay in excess of social security (percent)   4.00%