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Modify matching employee contribution to profit sharing under companies savings plan.

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Percentage of participants modified matching contribution to be matched towards safe Harbor under companies savings plan.

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Percentage of retiree health liability.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.

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Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of (increase) decrease to benefit obligation of defined benefit plan from remeasurement due to settlement. Excludes decrease to benefit obligation for settlement payment.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.

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Amount of plan asset for defined benefit plan with accumulated benefit obligation in excess of plan assets.

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Amount of projected benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets.

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Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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Amount of cost for defined contribution plan.

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Amount of cash outflow for pension benefit. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. Excludes other postretirement benefit.

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Employee benefit plans - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended				144 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2021	Dec. 04, 2024	Sep. 08, 2023
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plans, accumulated benefit obligation	$ 440,126	$ 404,648
Projected benefit obligation (PBO) with accumulated benefit obligations in excess of plan assets	279,472	229,397
Accumulated benefit obligation (ABO) with accumulated benefit obligations in excess of plan assets	270,720	224,045
Fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets	94,384	84,929
Total postretirement benefit plan assets	304,000	308,800
Prior service cost	$ 11,637
Percentage of retiree health liability	90.00%
Projected contributions to retirement plan	$ 21,900
Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Total postretirement benefit plan assets	290,825	295,587	$ 253,125
Defined benefit plan, benefit obligation	452,275	413,340	352,767
Accumulated other comprehensive loss including define pension plan, before tax	(109,718)	(114,957)
Prior service cost	$ 5,020	$ 5,557
United States \| Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Total	100.00%	100.00%
United States \| Retirement Plans \| Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total	19.50%	22.20%
United States \| Retirement Plans \| Debt securities
Defined Benefit Plan Disclosure [Line Items]
Total	78.00%	76.60%
Canada \| Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Non-cash settlement charges	$ 530	$ 1,010
Total	100.00%	100.00%
Canada \| Retirement Plans \| Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total	31.40%	29.40%
Current target allocation for investment portfolio	30.00%
Canada \| Retirement Plans \| Debt securities
Defined Benefit Plan Disclosure [Line Items]
Total	68.60%	70.60%
Current target allocation for investment portfolio	70.00%
U.K. \| Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Total	100.00%	100.00%
U.K. \| Retirement Plans \| Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total	21.00%	20.00%
Current target allocation for investment portfolio	20.00%
U.K. \| Retirement Plans \| Debt securities
Defined Benefit Plan Disclosure [Line Items]
Total	77.10%	79.10%
Current target allocation for investment portfolio	80.00%
Eviosys Plans \| United States \| Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Total postretirement benefit plan assets						$ 21,223
Defined benefit plan, long-term unfunded pension obligations						51,849
Defined benefit plan, short-term unfunded pension obligations						979
Defined benefit plan, benefit obligation						$ 74,051
RTS Packaging Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Total	82.00%
RTS Packaging Pension Plan \| Retirement Plans \| Equity securities
Defined Benefit Plan Disclosure [Line Items]
Current target allocation for investment portfolio	20.00%
RTS Packaging Pension Plan \| Retirement Plans \| Debt securities
Defined Benefit Plan Disclosure [Line Items]
Current target allocation for investment portfolio	80.00%
RTS Packaging Pension Plan \| United States \| Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Total postretirement benefit plan assets							$ 32,322
Defined benefit plan, long-term unfunded pension obligations							11,529
Defined benefit plan, short-term unfunded pension obligations							83
Defined benefit plan, benefit obligation							$ 43,934
Active Plan Investment Portfolio \| United States \| Retirement Plans \| Equity securities
Defined Benefit Plan Disclosure [Line Items]
Current target allocation for investment portfolio	20.00%
Active Plan Investment Portfolio \| United States \| Retirement Plans \| Debt securities
Defined Benefit Plan Disclosure [Line Items]
Current target allocation for investment portfolio	80.00%
Sonoco Savings Plan
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan contribution percentage, minimum	1.00%
Defined contribution plan contribution percentage, maximum	100.00%
Defined contribution plan, employer matching contribution (percent)				100.00%
Employer matching contribution, percent of employees' gross pay (percent)				6.00%
Percentage of participants modified matching contribution to be matched towards safe Harbor under companies savings plan					50.00%
Modify matching employee contribution to profit sharing under companies savings plan					4.00%
Companies expense related to the plan	$ 33,700	$ 30,684	29,347
Sonoco Investment and Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Cash contributions to the SIRP			$ 21,948
RTS Packaging
Defined Benefit Plan Disclosure [Line Items]
Voting interest acquired							65.00%
Interest held in acquiree before subsequent acquisition (percent)							35.00%
Accumulated other comprehensive loss including define pension plan, before tax							$ 4,756
Accumulated other comprehensive loss including define pension plan, after tax							$ 3,543