Publix Super Markets (PUSH) 10-Q 2 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 26, 2021	Jul. 15, 2021
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Amendment Flag	false
Document Period End Date	Jun. 26, 2021
Document Transition Report	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Entity File Number	000-00981
Entity Registrant Name	PUBLIX SUPER MARKETS, INC.
Entity Central Index Key	0000081061
Entity Incorporation, State or Country Code	FL
Entity Tax Identification Number	59-0324412
Entity Address, Address Line One	3300 Publix Corporate Parkway
Entity Address, City or Town	Lakeland
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33811
City Area Code	(863)
Local Phone Number	688-1188
Current Fiscal Year End Date	--12-25
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		690,113,000

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 26, 2021	Dec. 26, 2020
Current assets:
Cash and cash equivalents	$ 903,810	$ 673,483
Short-term investments	678,075	682,965
Trade receivables	793,009	917,531
Inventories	1,922,097	2,033,792
Prepaid expenses	235,459	110,025
Total current assets	4,532,450	4,417,796
Long-term investments	12,080,627	10,605,234
Other noncurrent assets	437,955	415,103
Operating lease right-of-use assets	2,931,874	2,965,424
Property, plant and equipment	16,847,374	16,256,993
Accumulated depreciation	(6,847,159)	(6,566,473)
Net property, plant and equipment	10,000,215	9,690,520
Total assets	29,983,121	28,094,077
Current liabilities:
Accounts payable	2,299,558	2,414,798
Accrued expenses:
Contributions to retirement plans	428,511	639,581
Self-insurance reserves	173,795	161,223
Salaries and wages	310,756	197,721
Other	655,419	499,970
Current portion of long-term debt	40,846	36,392
Current portion of operating lease liabilities	351,353	345,805
Income taxes	35,399	71,354
Total current liabilities	4,295,637	4,366,844
Deferred income taxes	976,910	772,722
Self-insurance reserves	246,966	235,858
Accrued postretirement benefit cost	130,288	131,356
Long-term debt	113,368	123,835
Operating lease liabilities	2,551,728	2,588,258
Other noncurrent liabilities	498,391	589,340
Total liabilities	8,813,288	8,808,213
Common stock related to Employee Stock Ownership Plan (ESOP)	3,860,655	3,484,549
Stockholders’ equity:
Common stock of $1 par value. Authorized 1,000,000 shares; issued 695,725 shares in 2021 and 690,982 shares in 2020	695,725	690,982
Additional paid-in capital	4,291,484	4,005,969
Retained earnings	16,370,825	14,343,865
Treasury stock at cost, 5,511 shares in 2021	(335,022)	0
Accumulated other comprehensive earnings	104,223	200,951
Common stock related to ESOP	(3,860,655)	(3,484,549)
Total stockholders’ equity	17,266,580	15,757,218
Noncontrolling interests	42,598	44,097
Total equity	21,169,833	19,285,864
Total liabilities and stockholders' equity	$ 29,983,121	$ 28,094,077

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares shares in Thousands	Jun. 26, 2021	Dec. 26, 2020
Statement of Financial Position [Abstract]
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	1,000,000	1,000,000
Common stock, shares issued	695,725	690,982
Treasury stock at cost, shares	5,511	0

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020
Revenues:
Sales	$ 11,831,719	$ 11,389,065	$ 23,497,018	$ 22,617,602
Other operating income	95,342	79,498	190,278	157,912
Total revenues	11,927,061	11,468,563	23,687,296	22,775,514
Costs and expenses:
Cost of merchandise sold	8,516,078	8,155,674	16,899,300	16,193,243
Operating and administrative expenses	2,301,625	2,235,844	4,627,034	4,353,615
Total costs and expenses	10,817,703	10,391,518	21,526,334	20,546,858
Operating profit	1,109,358	1,077,045	2,160,962	2,228,656
Investment income	181,972	674,463	1,022,981	343,618
Other nonoperating income (loss), net	16,622	(3,170)	31,259	13,754
Earnings before income tax expense	1,307,952	1,748,338	3,215,202	2,586,028
Income tax expense	298,548	381,283	710,705	551,638
Net earnings	$ 1,009,404	$ 1,367,055	$ 2,504,497	$ 2,034,390
Weighted average shares outstanding	692,052	703,036	691,643	704,897
Earnings per share	$ 1.46	$ 1.94	$ 3.62	$ 2.89

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 26, 2021	Mar. 27, 2021	Jun. 27, 2020	Mar. 28, 2020	Jun. 26, 2021	Jun. 27, 2020
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,009,404		$ 1,367,055		$ 2,504,497	$ 2,034,390
Other Comprehensive Earnings [Abstract]
Unrealized gain (loss) on debt securities net of income taxes in 2021 and 2020, respectively.	12,977		260,078		(90,571)	122,495
Reclassification adjustment for net realized gain on debt securities net of income taxes in 2021 and 2020, respectively.	(3,333)		(2,195)		(8,916)	(3,921)
Adjustment to postretirement benefit obligation in 2021 and 2020, respectively.	1,380		814		2,759	1,629
Comprehensive earnings	$ 1,020,428	$ 1,387,341	$ 1,625,752	$ 528,841	$ 2,407,769	$ 2,154,593

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020
Statement of Comprehensive Income [Abstract]
Unrealized gain (loss) on debt securities net of income taxes in 2021 and 2020, respectively.	$ 4,423	$ 88,664	$ (30,864)	$ 41,760
Reclassification adjustment for net realized gain on debt securities net of income taxes in 2021 and 2020, respectively.	(1,112)	(749)	(3,016)	(1,337)
Adjustment to postretirement benefit obligation net of income taxes in 2021 and 2020, respectively	$ 470	$ 278	$ 940	$ 556

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020
Cash flows from operating activities:
Cash received from customers	$ 23,664,160	$ 22,659,014
Cash paid to employees and suppliers	(20,550,089)	(19,177,711)
Income taxes paid	(630,233)	(25,981)
Self-insured claims paid	(216,253)	(176,148)
Dividends and interest received	134,991	118,684
Other operating cash receipts	188,666	155,659
Other operating cash payments	(11,965)	(9,819)
Net cash provided by operating activities	2,579,277	3,543,698
Cash flows from investing activities:
Payment for capital expenditures	(649,922)	(574,003)
Proceeds from sale of property, plant and equipment	8,066	3,441
Payment for investments	(1,613,841)	(2,433,868)
Proceeds from sale and maturity of investments	850,818	1,195,829
Net cash used in investing activities	(1,404,879)	(1,808,601)
Cash flows from financing activities:
Payment for acquisition of common stock	(588,237)	(775,114)
Proceeds from sale of common stock	134,904	133,824
Dividends paid	(477,537)	(437,342)
Repayment of long-term debt	(12,057)	(5,617)
Other, net	(1,144)	9,263
Net cash used in financing activities	(944,071)	(1,074,986)
Net increase in cash and cash equivalents	230,327	660,111
Cash and cash equivalents at beginning of period	673,483	763,382
Cash and cash equivalents at end of period	903,810	1,423,493
Reconciliation of net earnings to net cash provided by operating activities:
Net earnings	2,504,497	2,034,390
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	389,090	359,268
Increase in last-in, first-out (LIFO) reserve	37,353	31,975
Retirement contributions paid or payable in common stock	213,300	201,713
Deferred income taxes	237,128	(12,856)
Loss on disposal and impairment of long-lived assets	10,443	80,888
Gain on investments	(928,355)	(242,440)
Net amortization of investments	38,517	21,566
Changes in operating assets and liabilities providing (requiring) cash:
Trade receivables	124,522	11,525
Inventories	74,342	12,791
Other assets	7,125	6,153
Accounts payable and accrued expenses	23,103	511,455
Income taxes	(164,713)	523,158
Other liabilities	12,925	4,112
Total adjustments	74,780	1,509,308
Net cash provided by operating activities	$ 2,579,277	$ 3,543,698

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS EQUITY CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Common Stock (Acquired from) Sold to Stockholders	Accumulated Other Comprehensive Earnings (Losses)	Common Stock Related To ESOP
Beginning Balance at Dec. 28, 2019	$ 13,604,155	$ 706,552	$ 3,758,066	$ 12,317,478	$ 0	$ 81,289	$ (3,259,230)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive earnings	528,841			667,335		(138,494)
Dividends per share	(211,847)			(211,847)
Contribution of shares to retirement plans	361,755	4,977	242,724		114,054
Acquisition of shares from stockholders	(442,509)				(442,509)
Sale of shares to stockholders	109,348	107	5,179		104,062
Change for ESOP related shares	(444,014)						(444,014)
Ending Balance at Mar. 28, 2020	13,505,729	711,636	4,005,969	12,772,966	(224,393)	(57,205)	(3,703,244)
Beginning Balance at Dec. 28, 2019	13,604,155	706,552	3,758,066	12,317,478	0	81,289	(3,259,230)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive earnings	2,154,593
Ending Balance at Jun. 27, 2020	14,734,397	711,636	4,005,969	13,914,526	(532,522)	201,492	(3,566,704)
Beginning Balance at Mar. 28, 2020	13,505,729	711,636	4,005,969	12,772,966	(224,393)	(57,205)	(3,703,244)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive earnings	1,625,752			1,367,055		258,697
Dividends per share	(225,495)			(225,495)
Acquisition of shares from stockholders	(332,605)				(332,605)
Sale of shares to stockholders	24,476	0	0		24,476
Change for ESOP related shares	136,540						136,540
Ending Balance at Jun. 27, 2020	14,734,397	711,636	4,005,969	13,914,526	(532,522)	201,492	(3,566,704)
Beginning Balance at Dec. 26, 2020	15,757,218	690,982	4,005,969	14,343,865	0	200,951	(3,484,549)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive earnings	1,387,341			1,495,093		(107,752)
Dividends per share	(220,975)			(220,975)
Contribution of shares to retirement plans	408,569	4,743	285,438		118,388
Acquisition of shares from stockholders	(340,092)				(340,092)
Sale of shares to stockholders	90,882	0	5		90,877
Change for ESOP related shares	(560,684)						(560,684)
Ending Balance at Mar. 27, 2021	16,522,259	695,725	4,291,412	15,617,983	(130,827)	93,199	(4,045,233)
Beginning Balance at Dec. 26, 2020	15,757,218	690,982	4,005,969	14,343,865	0	200,951	(3,484,549)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive earnings	2,407,769
Ending Balance at Jun. 26, 2021	17,266,580	695,725	4,291,484	16,370,825	(335,022)	104,223	(3,860,655)
Beginning Balance at Mar. 27, 2021	16,522,259	695,725	4,291,412	15,617,983	(130,827)	93,199	(4,045,233)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive earnings	1,020,428			1,009,404		11,024
Dividends per share	(256,562)			(256,562)
Acquisition of shares from stockholders	(248,145)				(248,145)
Sale of shares to stockholders	44,022	0	72		43,950
Change for ESOP related shares	184,578						184,578
Ending Balance at Jun. 26, 2021	$ 17,266,580	$ 695,725	$ 4,291,484	$ 16,370,825	$ (335,022)	$ 104,223	$ (3,860,655)

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) (Parentheticals) - $ / shares shares in Thousands	3 Months Ended
	Jun. 26, 2021	Mar. 27, 2021	Jun. 27, 2020	Mar. 28, 2020
Statements of Stockholders' Equity (Parenthetical) [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.37	$ 0.32	$ 0.32	$ 0.30
Contribution of shares to retirement plans	0	6,786	0	7,398
Acquisition of shares from stockholders	4,059	5,731	6,714	9,142
Sale of shares to stockholders	721	1,515	492	2,239

Basis of Presentation (Notes)

Basis of Presentation (Notes)	6 Months Ended
	Jun. 26, 2021
Accounting Policies [Abstract]
Basis of Presentation [Text Block]	Basis of Presentation The accompanying unaudited condensed consolidated financial statements of Publix Super Markets, Inc. and subsidiaries (Company) have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and the rules and regulations of the Securities and Exchange Commission (SEC) for interim financial reporting. Accordingly, the accompanying statements do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, these statements include all adjustments that are of a normal and recurring nature necessary to present fairly the Company’s financial position and results of operations. Due to the seasonal nature of the Company’s business and the impact of the coronavirus pandemic, the results of operations for the three and six months ended June 26, 2021 are not necessarily indicative of the results for the entire 2021 fiscal year. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 26, 2020. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Fair Value of Financial Instrum

Fair Value of Financial Instruments (Notes)	6 Months Ended
	Jun. 26, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments [Text Block]	Fair Value of Financial Instruments The fair value of certain of the Company’s financial instruments, including cash and cash equivalents, trade receivables and accounts payable, approximates their respective carrying amounts due to their short-term maturity. The fair value of investments is based on market prices using the following measurement categories: Level 1 – Fair value is determined by using quoted prices in active markets for identical investments. Investments included in this category are equity securities (exchange traded funds). Level 2 – Fair value is determined by using other than quoted prices. By using observable inputs (for example, benchmark yields, interest rates, reported trades and broker dealer quotes), the fair value is determined through processes such as benchmark curves, benchmarking of similar securities and matrix pricing of corporate, state and municipal bonds by using pricing of similar bonds based on coupons, ratings and maturities. Investments included in this category are primarily debt securities (tax exempt and taxable bonds), including restricted investments in taxable bonds held as collateral. Level 3 – Fair value is determined by using other than observable inputs. Fair value is determined by using the best information available in the circumstances and requires significant management judgment or estimation. No investments are currently included in this category. Following is a summary of fair value measurements for investments as of June 26, 2021 and December 26, 2020: Fair Value Level 1 Level 2 Level 3 (Amounts are in thousands) June 26, 2021 $ 12,758,702 1,949,551 10,809,151 — December 26, 2020 11,288,199 1,465,987 9,822,212 —

Investments (Notes)

Investments (Notes)	6 Months Ended
	Jun. 26, 2021
Investments, Debt and Equity Securities [Abstract]
Investments [Tex Block]	Investments (a) Debt Securities Following is a summary of debt securities as of June 26, 2021 and December 26, 2020: Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Amounts are in thousands) June 26, 2021 Tax exempt bonds $ 419,677 4,400 17 424,060 Taxable bonds 8,653,710 195,639 44,498 8,804,851 Restricted investments 170,648 11,334 101 181,881 $ 9,244,035 211,373 44,616 9,410,792 December 26, 2020 Tax exempt bonds $ 548,438 7,408 88 555,758 Taxable bonds 8,182,003 286,745 8,324 8,460,424 Restricted investments 167,727 14,383 — 182,110 $ 8,898,168 308,536 8,412 9,198,292 The Company maintains restricted investments primarily for the benefit of the Company’s insurance carrier related to self-insurance reserves. These investments are held as collateral and not used for claim payments. The cost and fair value of debt securities by expected maturity as of June 26, 2021 and December 26, 2020 are as follows: June 26, 2021 December 26, 2020 Cost Fair Value Cost Fair Value (Amounts are in thousands) Due in one year or less $ 672,427 678,075 677,453 682,965 Due after one year through five years 5,493,203 5,661,467 5,330,696 5,533,074 Due after five years through ten years 3,075,170 3,067,810 2,886,333 2,978,301 Due after ten years 3,235 3,440 3,686 3,952 $ 9,244,035 9,410,792 8,898,168 9,198,292 The Company had no debt securities with credit losses as of June 26, 2021 and December 26, 2020. Following is a summary of debt securities with other unrealized losses by the time period impaired as of June 26, 2021 and December 26, 2020: Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (Amounts are in thousands) June 26, 2021 Tax exempt bonds $ 56,890 17 — — 56,890 17 Taxable bonds 2,973,436 43,941 64,401 557 3,037,837 44,498 Restricted investments 9,793 101 — — 9,793 101 $ 3,040,119 44,059 64,401 557 3,104,520 44,616 December 26, 2020 Tax exempt bonds $ 3,704 88 — — 3,704 88 Taxable bonds 1,157,387 7,946 39,622 378 1,197,009 8,324 $ 1,161,091 8,034 39,622 378 1,200,713 8,412 There are 138 debt securities contributing to the total unrealized losses of $44,616,000 as of June 26, 2021. Unrealized losses related to debt securities are primarily due to increases in interest rates that occurred since the debt securities were purchased. The Company continues to receive scheduled principal and interest payments on these debt securities. (b) Equity Securities Equity securities are measured at fair value with net unrealized gains and losses from changes in the fair value recognized in earnings (fair value adjustment). The fair value of equity securities was $3,347,910,000 and $2,089,907,000 as of June 26, 2021 and December 26, 2020, respectively. (c) Investment Income Net realized gain on investments represents the difference between the cost and the proceeds from the sale of debt and equity securities. The net realized gain on investments excludes the net gain or loss on the sale of equity securities previously recognized through the fair value adjustment, which is presented separately in the following table. Following is a summary of investment income for the three and six months ended June 26, 2021 and June 27, 2020: Three Months Ended Six Months Ended June 26, 2021 June 27, 2020 June 26, 2021 June 27, 2020 (Amounts are in thousands) Interest and dividend income $ 45,956 46,910 94,626 101,178 Net realized gain on investments 16,496 106,150 23,985 108,464 62,452 153,060 118,611 209,642 Fair value adjustment, due to net unrealized gain, on equity securities held at end of period 128,961 597,408 913,811 209,981 Net gain on sale of equity securities previously recognized through fair value adjustment (9,441) (76,005) (9,441) (76,005) $ 181,972 674,463 1,022,981 343,618

Consolidation of Joint Ventures

Consolidation of Joint Ventures and Long-Term Debt (Notes)	6 Months Ended
	Jun. 26, 2021
Consolidation Of Joint Ventures And Long Term Debt [Abstract]
Consolidation Of Joint Ventures And Long Term Debt Disclosure [Text Block]	Consolidation of Joint Ventures and Long-Term DebtFrom time to time, the Company enters into a joint venture (JV), in the legal form of a limited liability company, with certain real estate developers to partner in the development of a shopping center with the Company as the anchor tenant. The Company consolidates certain of these JVs in which it has a controlling financial interest. As of June 26, 2021, the carrying amounts of the assets and liabilities of the consolidated JVs were $196,002,000 and $77,610,000, respectively. As of December 26, 2020, the carrying amounts of the assets and liabilities of the consolidated JVs were $199,230,000 and $77,565,000, respectively. The assets are owned by and the liabilities are obligations of the JVs, not the Company, except for a portion of the long-term debt of certain JVs guaranteed by the Company. The JVs are financed with capital contributions from the members, loans and/or the cash flows generated by the JV owned shopping centers once in operation. Total earnings attributable to noncontrolling interests for 2021 and 2020 were immaterial. The Company’s involvement with these JVs does not have a significant effect on the Company’s financial condition, results of operations or cash flows.The Company’s long-term debt results primarily from the consolidation of loans of certain JVs and loans assumed in connection with the acquisition of certain shopping centers with the Company as the anchor tenant. No loans were assumed during the six months ended June 26, 2021 or June 27, 2020. Maturities of JV loans range from January 2022 through April 2027 and have variable interest rates based on a LIBOR index plus 200 to 250 basis points. Maturities of assumed shopping center loans range from September 2021 through January 2027 and have fixed interest rates ranging from 3.7% to 7.5%

Retirement Plan (Notes)

Retirement Plan (Notes)	6 Months Ended
	Jun. 26, 2021
Retirement Benefits [Abstract]
Retirement Plan [Text Block]	Retirement PlanThe Company has a trusteed, noncontributory Employee Stock Ownership Plan (ESOP) for the benefit of eligible employees. Since the Company’s common stock is not traded on an established securities market, the ESOP includes a put option for shares of the Company’s common stock distributed from the ESOP. Shares are distributed from the ESOP primarily to separated vested participants and certain eligible participants who elect to diversify their account balances. Under the Company’s administration of the ESOP’s put option, if the owners of distributed shares desire to sell their shares, the Company is required to purchase the shares at fair value for a specified time period after distribution of the shares from the ESOP. The fair value of distributed shares subject to the put option totaled $551,770,000 and $444,801,000 as of June 26, 2021 and December 26, 2020, respectively. The cost of the shares held by the ESOP totaled $3,308,885,000 and $3,039,748,000 as of June 26, 2021 and December 26, 2020, respectively. Due to the Company’s obligation under the put option, the distributed shares subject to the put option and the shares held by the ESOP are classified as temporary equity in the mezzanine section of the condensed consolidated balance sheets and totaled $3,860,655,000 and $3,484,549,000 as of June 26, 2021 and December 26, 2020, respectively. The fair value of the shares held by the ESOP totaled $10,357,545,000 and $9,976,034,000 as of June 26, 2021 and December 26, 2020, respectively.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Earnings (Losses) (Notes)	3 Months Ended	6 Months Ended
	Jun. 26, 2021	Jun. 26, 2021
Equity [Abstract]
Accumulated Other Comprehensive Earnings (Losses) Note [Text Block]	Accumulated Other Comprehensive Earnings (Losses) A reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for the three months ended June 26, 2021 and June 27, 2020 is as follows: Investments Postretirement Benefit Accumulated Other Comprehensive Earnings (Losses) (Amounts are in thousands) 2021 Balances at March 27, 2021 $ 114,773 (21,574) 93,199 Unrealized gain on debt securities 12,977 — 12,977 Net realized gain on debt securities reclassified to investment income (3,333) — (3,333) Adjustment to postretirement benefit obligation — 1,380 1,380 Net other comprehensive earnings 9,644 1,380 11,024 Balances at June 26, 2021 $ 124,417 (20,194) 104,223 2020 Balances at March 28, 2020 $ (40,803) (16,402) (57,205) Unrealized gain on debt securities 260,078 — 260,078 Net realized gain on debt securities reclassified to investment income (2,195) — (2,195) Adjustment to postretirement benefit obligation — 814 814 Net other comprehensive earnings 257,883 814 258,697 Balances at June 27, 2020 $ 217,080 (15,588) 201,492	A reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for the six months ended June 26, 2021 and June 27, 2020 is as follows: Investments Postretirement Benefits Accumulated Other Comprehensive Earnings (Losses) (Amounts are in thousands) 2021 Balances at December 26, 2020 $ 223,904 (22,953) 200,951 Unrealized loss on debt securities (90,571) — (90,571) Net realized gain on debt securities reclassified to investment income (8,916) — (8,916) Adjustment to postretirement benefit obligation — 2,759 2,759 Net other comprehensive (losses) earnings (99,487) 2,759 (96,728) Balances at June 26, 2021 $ 124,417 (20,194) 104,223 2020 Balances at December 28, 2019 $ 98,506 (17,217) 81,289 Unrealized gain on debt securities 122,495 — 122,495 Net realized gain on debt securities reclassified to investment income (3,921) — (3,921) Adjustment to postretirement benefit obligation — 1,629 1,629 Net other comprehensive earnings 118,574 1,629 120,203 Balances at June 27, 2020 $ 217,080 (15,588) 201,492

Subsequent Event (Notes)

Subsequent Event (Notes)	6 Months Ended
	Jun. 26, 2021
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent EventOn July 1, 2021, the Company declared a quarterly dividend on its common stock of $0.37 per share or $255,300,000, payable August 2, 2021 to stockholders of record as of the close of business July 15, 2021.

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 26, 2021
Accounting Policies [Abstract]
Basis of Presentation [Policy Text Block]	Basis of Presentation The accompanying unaudited condensed consolidated financial statements of Publix Super Markets, Inc. and subsidiaries (Company) have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) and the rules and regulations of the Securities and Exchange Commission (SEC) for interim financial reporting. Accordingly, the accompanying statements do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, these statements include all adjustments that are of a normal and recurring nature necessary to present fairly the Company’s financial position and results of operations. Due to the seasonal nature of the Company’s business and the impact of the coronavirus pandemic, the results of operations for the three and six months ended June 26, 2021 are not necessarily indicative of the results for the entire 2021 fiscal year. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 26, 2020. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 26, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments [Table Text Block]	Following is a summary of fair value measurements for investments as of June 26, 2021 and December 26, 2020: Fair Value Level 1 Level 2 Level 3 (Amounts are in thousands) June 26, 2021 $ 12,758,702 1,949,551 10,809,151 — December 26, 2020 11,288,199 1,465,987 9,822,212 —

Investments (Tables)

Investments (Tables)	6 Months Ended
	Jun. 26, 2021
Investments, Debt and Equity Securities [Abstract]
Available For Sale Debt Securities [Table Text Block]	Following is a summary of debt securities as of June 26, 2021 and December 26, 2020: Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Amounts are in thousands) June 26, 2021 Tax exempt bonds $ 419,677 4,400 17 424,060 Taxable bonds 8,653,710 195,639 44,498 8,804,851 Restricted investments 170,648 11,334 101 181,881 $ 9,244,035 211,373 44,616 9,410,792 December 26, 2020 Tax exempt bonds $ 548,438 7,408 88 555,758 Taxable bonds 8,182,003 286,745 8,324 8,460,424 Restricted investments 167,727 14,383 — 182,110 $ 8,898,168 308,536 8,412 9,198,292
Amortized Cost and Fair Value of Available For Sale Debt Securities by Expected Maturity [Table Text Block]	The cost and fair value of debt securities by expected maturity as of June 26, 2021 and December 26, 2020 are as follows: June 26, 2021 December 26, 2020 Cost Fair Value Cost Fair Value (Amounts are in thousands) Due in one year or less $ 672,427 678,075 677,453 682,965 Due after one year through five years 5,493,203 5,661,467 5,330,696 5,533,074 Due after five years through ten years 3,075,170 3,067,810 2,886,333 2,978,301 Due after ten years 3,235 3,440 3,686 3,952 $ 9,244,035 9,410,792 8,898,168 9,198,292
Available For Sale Debt Securities in an Unrealized Loss Position by Time Period Impaired [Table Text Block]	Following is a summary of debt securities with other unrealized losses by the time period impaired as of June 26, 2021 and December 26, 2020: Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (Amounts are in thousands) June 26, 2021 Tax exempt bonds $ 56,890 17 — — 56,890 17 Taxable bonds 2,973,436 43,941 64,401 557 3,037,837 44,498 Restricted investments 9,793 101 — — 9,793 101 $ 3,040,119 44,059 64,401 557 3,104,520 44,616 December 26, 2020 Tax exempt bonds $ 3,704 88 — — 3,704 88 Taxable bonds 1,157,387 7,946 39,622 378 1,197,009 8,324 $ 1,161,091 8,034 39,622 378 1,200,713 8,412
Investment Income (Loss) [Table Text Block]	Following is a summary of investment income for the three and six months ended June 26, 2021 and June 27, 2020: Three Months Ended Six Months Ended June 26, 2021 June 27, 2020 June 26, 2021 June 27, 2020 (Amounts are in thousands) Interest and dividend income $ 45,956 46,910 94,626 101,178 Net realized gain on investments 16,496 106,150 23,985 108,464 62,452 153,060 118,611 209,642 Fair value adjustment, due to net unrealized gain, on equity securities held at end of period 128,961 597,408 913,811 209,981 Net gain on sale of equity securities previously recognized through fair value adjustment (9,441) (76,005) (9,441) (76,005) $ 181,972 674,463 1,022,981 343,618

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Earnings (Losses) (Tables)	3 Months Ended	6 Months Ended
	Jun. 26, 2021	Jun. 26, 2021
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Earnings (Losses) [Table Text Block]	A reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for the three months ended June 26, 2021 and June 27, 2020 is as follows: Investments Postretirement Benefit Accumulated Other Comprehensive Earnings (Losses) (Amounts are in thousands) 2021 Balances at March 27, 2021 $ 114,773 (21,574) 93,199 Unrealized gain on debt securities 12,977 — 12,977 Net realized gain on debt securities reclassified to investment income (3,333) — (3,333) Adjustment to postretirement benefit obligation — 1,380 1,380 Net other comprehensive earnings 9,644 1,380 11,024 Balances at June 26, 2021 $ 124,417 (20,194) 104,223 2020 Balances at March 28, 2020 $ (40,803) (16,402) (57,205) Unrealized gain on debt securities 260,078 — 260,078 Net realized gain on debt securities reclassified to investment income (2,195) — (2,195) Adjustment to postretirement benefit obligation — 814 814 Net other comprehensive earnings 257,883 814 258,697 Balances at June 27, 2020 $ 217,080 (15,588) 201,492	A reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for the six months ended June 26, 2021 and June 27, 2020 is as follows: Investments Postretirement Benefits Accumulated Other Comprehensive Earnings (Losses) (Amounts are in thousands) 2021 Balances at December 26, 2020 $ 223,904 (22,953) 200,951 Unrealized loss on debt securities (90,571) — (90,571) Net realized gain on debt securities reclassified to investment income (8,916) — (8,916) Adjustment to postretirement benefit obligation — 2,759 2,759 Net other comprehensive (losses) earnings (99,487) 2,759 (96,728) Balances at June 26, 2021 $ 124,417 (20,194) 104,223 2020 Balances at December 28, 2019 $ 98,506 (17,217) 81,289 Unrealized gain on debt securities 122,495 — 122,495 Net realized gain on debt securities reclassified to investment income (3,921) — (3,921) Adjustment to postretirement benefit obligation — 1,629 1,629 Net other comprehensive earnings 118,574 1,629 120,203 Balances at June 27, 2020 $ 217,080 (15,588) 201,492

Fair Value Measurements for Inv

Fair Value Measurements for Investments (Details) - USD ($) $ in Thousands	Jun. 26, 2021	Dec. 26, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 12,758,702	$ 11,288,199
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	1,949,551	1,465,987
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	10,809,151	9,822,212
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 0	$ 0

Available for Sale Debt Securit

Available for Sale Debt Securities Reconciliation (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 26, 2021	Dec. 26, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 9,244,035	$ 8,898,168
Unrealized Gains	211,373	308,536
Unrealized Losses	44,616	8,412
Fair Value	9,410,792	9,198,292
Tax exempt bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	419,677	548,438
Unrealized Gains	4,400	7,408
Unrealized Losses	17	88
Fair Value	424,060	555,758
Taxable bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	8,653,710	8,182,003
Unrealized Gains	195,639	286,745
Unrealized Losses	44,498	8,324
Fair Value	8,804,851	8,460,424
Restricted investments [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	170,648	167,727
Unrealized Gains	11,334	14,383
Unrealized Losses	101	0
Fair Value	$ 181,881	$ 182,110

Amortized Cost and Fair Value o

Amortized Cost and Fair Value of Available for Sale Securities by Expected Maturity (Details) - USD ($) $ in Thousands	Jun. 26, 2021	Dec. 26, 2020
Amortized Cost [Abstract]
Due in one year or less	$ 672,427	$ 677,453
Due after one year through five years	5,493,203	5,330,696
Due after five years through ten years	3,075,170	2,886,333
Due after ten years	3,235	3,686
Total amortized cost	9,244,035	8,898,168
Fair Value [Abstract]
Due in one year or less	678,075	682,965
Due after one year through five years	5,661,467	5,533,074
Due after five years through ten years	3,067,810	2,978,301
Due after ten years	3,440	3,952
Total fair value	$ 9,410,792	$ 9,198,292

Investments Allowance for Credi

Investments Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Jun. 26, 2021	Dec. 26, 2020
Credit Loss [Abstract]
Debt Securities, Available-for-sale, Allowance for Credit Losses	$ 0	$ 0

Temporarily Impaired Available

Temporarily Impaired Available for Sale Debt Securities by Time Period Impaired (Details) - USD ($) $ in Thousands	Jun. 26, 2021	Dec. 26, 2020
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 3,040,119	$ 1,161,091
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	44,059	8,034
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	64,401	39,622
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	557	378
Unrealized Loss Position, Fair Value	3,104,520	1,200,713
Unrealized Loss Position, Accumulated Loss	44,616	8,412
Tax exempt bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	56,890	3,704
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	17	88
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	0
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Unrealized Loss Position, Fair Value	56,890	3,704
Unrealized Loss Position, Accumulated Loss	17	88
Taxable bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	2,973,436	1,157,387
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	43,941	7,946
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	64,401	39,622
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	557	378
Unrealized Loss Position, Fair Value	3,037,837	1,197,009
Unrealized Loss Position, Accumulated Loss	44,498	8,324
Restricted investments [Member]
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	9,793	0
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	101	0
Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	0	0
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Unrealized Loss Position, Fair Value	9,793	0
Unrealized Loss Position, Accumulated Loss	$ 101	$ 0

Investments - Additional Inform

Investments - Additional Information (Details) $ in Thousands	Jun. 26, 2021USD ($)AFS_security	Dec. 26, 2020USD ($)
Debt Securities, Available-for-sale, Unrealized Gain (Loss) [Abstract]
Number of debt securities issues contributing to total unrealized losses | AFS_security	138
Total, Unrealized Losses | $	$ 44,616	$ 8,412

Investments Equity Securities (

Investments Equity Securities (Details) - USD ($)	Jun. 26, 2021	Dec. 26, 2020
Equity Securities [Line Items]
Equity Securities	$ 3,347,910,000	$ 2,089,907,000

Investment Income (Details)

Investment Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020
Investment Income, Net [Abstract]
Interest and dividend income	$ 45,956	$ 46,910	$ 94,626	$ 101,178
Net realized gain on investments	16,496	106,150	23,985	108,464
Investment income before fair value adjustment	62,452	153,060	118,611	209,642
Fair value adjustment, due to net unrealized gain, on equity securities held at end of period	128,961	597,408	913,811	209,981
Net gain on sale of equity securities previously recognized through fair value adjustment	(9,441)	(76,005)	(9,441)	(76,005)
Investment income	$ 181,972	$ 674,463	$ 1,022,981	$ 343,618

Consolidation of Joint Ventur_2

Consolidation of Joint Ventures and Long-Term Debt Joint Venture - Additional Information (Details) - USD ($)	Jun. 26, 2021	Dec. 26, 2020
Variable Interest Entity [Line Items]
Assets	$ 29,983,121,000	$ 28,094,077,000
Liabilities	8,813,288,000	8,808,213,000
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Assets	196,002,000	199,230,000
Liabilities	$ 77,610,000	$ 77,565,000

Consolidation of Joint Ventur_3

Consolidation of Joint Ventures and Long-Term Debt Long-Term Debt Assumptions, Maturities and Interest Rates (Details) - USD ($)	6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020
Debt Instrument [Line Items]
Loans Assumed	$ 0	$ 0
JV Loans [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Month And Year	January 2022
Debt Instrument, Basis Spread on Variable Rate	2.00%
JV Loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Month And Year	April 2027
Debt Instrument, Basis Spread on Variable Rate	2.50%
Shopping Center Loans [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Month And Year	September 2021
Debt Instrument, Interest Rate, Stated Percentage	3.70%
Shopping Center Loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument Maturity Month And Year	January 2027
Debt Instrument, Interest Rate, Stated Percentage	7.50%

Retirement Plan - Additional In

Retirement Plan - Additional Information (Details) - USD ($)	Jun. 26, 2021	Dec. 26, 2020
Retirement Benefits [Abstract]
Distributed shares subject to put option, fair value	$ 551,770,000	$ 444,801,000
ESOP, shares cost	3,308,885,000	3,039,748,000
Common stock related to ESOP	3,860,655,000	3,484,549,000
ESOP shares, fair value	$ 10,357,545,000	$ 9,976,034,000

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Earnings (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances at Beginning of Period	$ 93,199	$ (57,205)	$ 200,951	$ 81,289
Unrealized gain (loss) on debt securities	12,977	260,078	(90,571)	122,495
Net realized gain on debt securities reclassified to investment income	(3,333)	(2,195)	(8,916)	(3,921)
Adjustment to postretirement benefit obligation	1,380	814	2,759	1,629
Net other comprehensive earnings (losses)	11,024	258,697	(96,728)	120,203
Balances at End of Period	104,223	201,492	104,223	201,492
Investments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances at Beginning of Period	114,773	(40,803)	223,904	98,506
Unrealized gain (loss) on debt securities	12,977	260,078	(90,571)	122,495
Net realized gain on debt securities reclassified to investment income	(3,333)	(2,195)	(8,916)	(3,921)
Net other comprehensive earnings (losses)	9,644	257,883	(99,487)	118,574
Balances at End of Period	124,417	217,080	124,417	217,080
Postretirement Benefit obligation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances at Beginning of Period	(21,574)	(16,402)	(22,953)	(17,217)
Adjustment to postretirement benefit obligation	1,380	814	2,759	1,629
Net other comprehensive earnings (losses)	1,380	814	2,759	1,629
Balances at End of Period	$ (20,194)	$ (15,588)	$ (20,194)	$ (15,588)

Subsequent Event (Details)

Subsequent Event (Details) - Subsequent Event [Member] - USD ($)	Aug. 02, 2021	Jul. 15, 2021	Jul. 01, 2021
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared			$ 0.37
Dividends Payable, Date Declared			Jul. 1, 2021
Dividends Payable, Date to be Paid	Aug. 2, 2021
Dividends Payable, Date of Record		Jul. 15, 2021
Dividends, Common Stock, Cash			$ 255,300,000