Fair Value Measurements - Narrative (Details) $ in Thousands	Sep. 28, 2025 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, Type [Extensible Enumeration]	Preferred Stock
Level 2 \| Recurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in preferred stock	$ 21,212

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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+ Details

- Definition

Indicates type of investment. Includes, but is not limited to, common stock, preferred stock, convertible security, fixed income security, government security, option purchased, warrant, loan participation and assignment, commercial paper, bankers' acceptance, certificates of deposit, short-term security, repurchase agreement, and other investment company.

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+ Details

SONOCO PRODUCTS CO 10-Q