| Component: (Network and Table) | |
|---|---|
| Network | 2405404 - Disclosure - Amortized Cost and Fair Value of Available for Sale Securities by Expected Maturity (Detail) (http://www.publix.com/role/AmortizedCostAndFairValueOfAvailableForSaleSecuritiesByExpectedMaturityDetail) |
| Table | Schedule of Available-for-sale Securities [Table] |
| Reporting Entity [Axis] | 0000081061 (http://www.sec.gov/CIK) |
| Schedule of Available-for-sale Securities [Line Items] | Period [Axis] | |||||
|---|---|---|---|---|---|---|
2013-12-28 | 2012-12-29 | |||||
| Major Types of Debt and Equity Securities [Axis] | Major Types of Debt and Equity Securities [Axis] | |||||
| Restricted Investments [Member] | Equity Securities [Member] | Major Types of Debt and Equity Securities [Domain] | Restricted Investments [Member] | Equity Securities [Member] | Major Types of Debt and Equity Securities [Domain] | |
Amortized Cost | ||||||
Due in one year or less | ||||||
Due after one year through five years | ||||||
Due after five years through ten years | ||||||
Due after ten years | ||||||
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Total | ||||||
Amortized cost of available-for-sale securities | 170,000,000 | 790,975,000 | 5,836,904,000 | 170,000,000 | 510,613,000 | 4,938,090,000 |
Fair Value | ||||||
Due in one year or less | ||||||
Due after one year through five years | ||||||
Due after five years through ten years | ||||||
Due after ten years | ||||||
Fair value of available for sale securities, debt | ||||||
Fair value of available-for-sale securities | 169,914,000 | 926,194,000 | 5,991,486,000 | 170,431,000 | 556,745,000 | 5,033,106,000 |