Employee Benefit Plan, Fair Value and NAV (Details) - EBP 001 - USD ($)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
EBP, Investment, Fair Value [Line Items]
Net appreciation of investments	$ 497,822,382	$ 1,481,013,393
Investments, at fair value	8,247,407,098	7,859,328,486
EBP, Employer Contribution Receivable [Line Items]
Employer	49,703,324	49,898,186
Fair Value, Inputs, Level 1
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	231,082,289	198,991,084
Fair Value, Inputs, Level 2
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	8,016,324,809	7,660,337,402
Fair Value, Inputs, Level 3
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	0	0
Mutual Funds
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	231,082,289	198,991,084
Mutual Funds \| Fair Value, Inputs, Level 1
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	231,082,289	198,991,084
Mutual Funds \| Fair Value, Inputs, Level 2
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	0	0
Mutual Funds \| Fair Value, Inputs, Level 3
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	0	0
Publix Stock
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	5,486,909,421	5,628,950,800
Publix Stock \| Fair Value, Inputs, Level 1
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	0	0
Publix Stock \| Fair Value, Inputs, Level 2
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	5,486,909,421	5,628,950,800
Publix Stock \| Fair Value, Inputs, Level 3
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	0	0
Collective Investment Funds
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	2,529,415,388	2,031,386,602
Collective Investment Funds \| Fair Value, Inputs, Level 1
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	0	0
Collective Investment Funds \| Fair Value, Inputs, Level 2
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	2,529,415,388	2,031,386,602
Collective Investment Funds \| Fair Value, Inputs, Level 3
EBP, Investment, Fair Value [Line Items]
Investments, at fair value	$ 0	$ 0

EBP, Employer Contribution Receivable [Line Items]

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- Definition

Amount of increase (decrease) in net asset available for benefit from realized and unrealized gain (loss) on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

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Amount of increase in net asset available for benefit from cash contribution from employer of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

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- Definition

Fair value of investment, excluding plan interest in master trust, held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract not meeting fully-benefit responsive investment criteria.

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- Definition

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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