Publix Super Markets (PUSH) 10-K 1 Mar 21 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 26, 2020	Feb. 02, 2021	Jun. 26, 2020
Document Documentand Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 26, 2020
Current Fiscal Year End Date	--12-26
Document Fiscal Year Focus	2020
Entity File Number	000-00981
Entity Registrant Name	PUBLIX SUPER MARKETS, INC.
Entity Incorporation, State or Country Code	FL
Entity Tax Identification Number	59-0324412
Entity Address, Address Line One	3300 Publix Corporate Parkway, Lakeland, Florida
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
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 19,947,149,000
Entity Common Stock, Shares Outstanding		689,647,000
Document Fiscal Period Focus	FY
Entity Central Index Key	0000081061
Document Transition Report	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 26, 2020	Dec. 28, 2019
Current assets:
Cash and cash equivalents	$ 673,483	$ 763,382
Short-term investments	682,965	438,105
Trade receivables	917,531	737,093
Inventories	2,033,792	1,913,310
Prepaid expenses	110,025	75,710
Total current assets	4,417,796	3,927,600
Long-term investments	10,605,234	7,988,280
Other noncurrent assets	415,103	441,938
Operating lease right-of-use assets	2,965,424	2,964,780
Property, plant and equipment:
Land	2,059,274	1,984,400
Buildings and improvements	6,379,852	5,948,039
Furniture, fixtures and equipment	5,796,442	5,477,534
Leasehold improvements	1,764,326	1,660,164
Construction in progress	257,099	152,272
Property, plant and equipment	16,256,993	15,222,409
Accumulated depreciation	(6,566,473)	(6,037,887)
Net property, plant and equipment	9,690,520	9,184,522
Total assets	28,094,077	24,507,120
Current liabilities:
Accounts payable	2,414,798	1,984,761
Accrued expenses:
Contributions to retirement plans	639,581	581,699
Self-insurance reserves	161,223	149,082
Salaries and wages	197,721	148,662
Other	499,970	461,427
Current portion of long-term debt	36,392	39,692
Current portion of operating lease liabilities	345,805	335,391
Federal and state income taxes	71,354	0
Total current liabilities	4,366,844	3,700,714
Deferred income taxes	772,722	682,484
Self-insurance reserves	235,858	226,727
Accrued postretirement benefit cost	131,356	120,015
Long-term debt	123,835	131,997
Operating lease liabilities	2,588,258	2,603,206
Other noncurrent liabilities	589,340	140,633
Total liabilities	8,808,213	7,605,776
Common stock related to Employee Stock Ownership Plan (ESOP)	3,484,549	3,259,230
Stockholders’ equity:
Common stock of $1 par value. Authorized 1,000,000 shares; issued and outstanding 690,982 shares in 2020 and 706,552 shares in 2019	690,982	706,552
Additional paid-in capital	4,005,969	3,758,066
Retained earnings	14,343,865	12,317,478
Accumulated other comprehensive earnings	200,951	81,289
Common stock related to ESOP	(3,484,549)	(3,259,230)
Total stockholders’ equity	15,757,218	13,604,155
Noncontrolling interests	44,097	37,959
Total equity	19,285,864	16,901,344
Commitments and contingencies	0	0
Total liabilities and stockholders' equity	$ 28,094,077	$ 24,507,120

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Thousands	Dec. 26, 2020	Dec. 28, 2019
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	1,000,000	1,000,000
Common stock, shares outstanding	690,982	706,552
Common stock, shares issued	690,982	706,552

Consolidated Statements of Earn

Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Revenues:
Sales	$ 44,863,507	$ 38,116,402	$ 36,093,907
Other operating income	340,452	346,351	301,811
Total revenues	45,203,959	38,462,753	36,395,718
Costs and expenses:
Cost of merchandise sold	32,354,606	27,740,469	26,311,391
Operating and administrative expenses	8,837,380	7,833,035	7,339,924
Total costs and expenses	41,191,986	35,573,504	33,651,315
Operating profit	4,011,973	2,889,249	2,744,403
Investment income	975,006	814,372	56,699
Other nonoperating income, net	49,676	82,365	119,866
Earnings before income tax expense	5,036,655	3,785,986	2,920,968
Income tax expense	1,064,817	780,591	539,801
Net earnings	$ 3,971,838	$ 3,005,395	$ 2,381,167
Weighted average shares outstanding	700,587	713,535	726,407
Earnings per share	$ 5.67	$ 4.21	$ 3.28

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 26, 2020	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,019,864	$ 917,584	$ 1,367,055	$ 667,335	$ 789,341	$ 574,026	$ 661,057	$ 980,971	$ 3,971,838	$ 3,005,395	$ 2,381,167
Other comprehensive earnings:
Unrealized gain (loss) on debt securities net of income taxes of $47,253, $50,504 and $(6,521) in 2020, 2019 and 2018, respectively.									138,989	148,141	(19,126)
Reclassification adjustment for net realized (gain) loss on debt securities net of income taxes of $(4,616), $(205) and $118 in 2020, 2019 and 2018, respectively.									(13,591)	(602)	346
Adjustment to postretirement benefit obligation net of income taxes of $(1,955), $(3,576) and $2,963 in 2020, 2019 and 2018, respectively.									(5,736)	(10,488)	8,692
Comprehensive earnings									$ 4,091,500	$ 3,142,446	$ 2,371,079

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Earnings (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Statement of Comprehensive Income [Abstract]
Unrealized gain (loss) on debt securities net of income taxes	$ 47,253	$ 50,504	$ (6,521)
Reclassification adjustment for net realized (gain) loss on debt securities net of income taxes	(4,616)	(205)	118
Adjustment to postretirement benefit obligation net of income taxes	$ (1,955)	$ (3,576)	$ 2,963

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Cash flows from operating activities:
Cash received from customers	$ 44,885,680	$ 38,269,943	$ 36,296,870
Cash paid to employees and suppliers	(38,844,539)	(34,017,408)	(32,177,582)
Income taxes paid	(789,711)	(373,172)	(563,983)
Self-insured claims paid	(384,044)	(394,495)	(395,457)
Dividends and interest received	241,639	217,574	192,528
Other operating cash receipts	336,244	341,929	297,098
Other operating cash payments	(21,052)	(19,940)	(17,548)
Net cash provided by operating activities	5,424,217	4,024,431	3,631,926
Cash flows from investing activities:
Payment for capital expenditures	(1,228,387)	(1,141,118)	(1,350,089)
Proceeds from sale of property, plant and equipment	10,297	8,609	43,834
Payment for investments	(5,356,844)	(3,237,807)	(2,778,691)
Proceeds from sale and maturity of investments	3,146,473	2,113,287	2,342,162
Net cash used in investing activities	(3,428,461)	(2,257,029)	(1,742,784)
Cash flows from financing activities:
Payment for acquisition of common stock	(1,440,312)	(1,088,570)	(1,405,872)
Proceeds from sale of common stock	249,808	311,950	307,933
Dividends paid	(884,369)	(828,733)	(734,510)
Repayment of long-term debt	(28,374)	(11,061)	(43,593)
Other, net	17,592	13,130	6,239
Net cash used in financing activities	(2,085,655)	(1,603,284)	(1,869,803)
Net (decrease) increase in cash and cash equivalents	(89,899)	164,118	19,339
Cash and cash equivalents at beginning of year	763,382	599,264	579,925
Cash and cash equivalents at end of year	673,483	763,382	599,264
Reconciliation of net earnings to net cash provided by operating activities:
Net earnings	3,971,838	3,005,395	2,381,167
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	736,531	716,669	677,154
Increase in last-in, first out (LIFO) reserve	19,752	39,939	24,170
Retirement contributions paid or payable in common stock	418,311	409,614	373,350
Deferred income taxes	49,556	215,004	63,245
Loss (gain) on disposal and impairment of long-lived assets	138,573	11,036	(13,185)
(Gain) loss on investments	(775,571)	(627,624)	73,254
Net amortization of investments	54,107	42,753	63,654
Change in operating assets and liabilities providing (requiring) cash:
Trade receivables	(180,438)	(54,890)	(10,790)
Inventories	(140,234)	(104,514)	3,614
Other assets	151,714	136,796	199,930
Accounts payable and accrued expenses	615,521	181,154	112,383
Federal and state income taxes	58,901	40,548	(313,989)
Other liabilities	305,656	12,551	(2,031)
Total adjustments	1,452,379	1,019,036	1,250,759
Net cash provided by operating activities	$ 5,424,217	$ 4,024,431	$ 3,631,926

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Common Stock (Acquired from) Sold to Stock- holders	Accumu- lated Other Compre- hensive Earnings (Losses)	Common Stock Related to ESOP
Beginning Balance at Dec. 30, 2017	$ 11,017,149	$ 733,440	$ 3,139,647	$ 10,044,564	$ 0	$ 152,636	$ (3,053,138)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive earnings	2,371,079			2,381,167		(10,088)
Dividends per share	(734,510)			(734,510)
Contribution of shares to retirement plans	349,424	6,221	261,423		81,780
Acquisition of shares from stockholders	(1,405,872)				(1,405,872)
Sale of shares to stockholders	307,933	1,380	56,934		249,619
Retirement of shares	0	(25,596)		(1,048,877)	1,074,473
Change for ESOP related shares	(81,861)						(81,861)
Cumulative Effect of Net Unrealized Gain on Equity Securities Reclassified to Retained Earnings	0			198,310		(198,310)
Ending Balance at Dec. 29, 2018	11,823,342	715,445	3,458,004	10,840,654	0	(55,762)	(3,134,999)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive earnings	3,142,446			3,005,395		137,051
Dividends per share	(828,733)			(828,733)
Contribution of shares to retirement plans	367,951	5,605	235,017		127,329
Acquisition of shares from stockholders	(1,088,570)				(1,088,570)
Sale of shares to stockholders	311,950	1,497	65,045		245,408
Retirement of shares	0	(15,995)		(699,838)	715,833
Change for ESOP related shares	(124,231)						(124,231)
Ending 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	4,091,500			3,971,838		119,662
Dividends per share	(884,369)			(884,369)
Contribution of shares to retirement plans	361,755	4,977	242,724		114,054
Acquisition of shares from stockholders	(1,440,312)				(1,440,312)
Sale of shares to stockholders	249,808	107	5,179		244,522
Retirement of shares	0	(20,654)		(1,061,082)	1,081,736
Change for ESOP related shares	(225,319)						(225,319)
Ending Balance at Dec. 26, 2020	$ 15,757,218	$ 690,982	$ 4,005,969	$ 14,343,865	$ 0	$ 200,951	$ (3,484,549)

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares shares in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Statement of Stockholders' Equity [Abstract]
Dividends, per share	$ 1.26	$ 1.16	$ 1.01
Contribution of shares to retirement plans	7,398	8,587	8,440
Acquisition of shares from stockholders	27,797	24,506	33,770
Sale of shares to stockholders	4,829	7,026	7,335
Retirement of shares	20,654	15,995	25,596

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 26, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies [Text Block]	(1) Summary of Significant Accounting Policies (a) Business Publix Super Markets, Inc. and its wholly owned subsidiaries (Company) are in the business of operating retail food supermarkets in Florida, Georgia, Alabama, South Carolina, North Carolina, Tennessee and Virginia. The Company was founded in 1930 and later merged into another corporation that was originally incorporated in 1921. The Company has no other significant lines of business or industry segments. (b) Principles of Consolidation The consolidated financial statements include the accounts of the Company, its wholly owned subsidiaries and certain joint ventures in which the Company has a controlling financial interest. All significant intercompany balances and transactions are eliminated in consolidation. (c) Fiscal Year The Company’s fiscal year ends on the last Saturday in December. Fiscal years 2020, 2019 and 2018 include 52 weeks. (d) Cash Equivalents The Company considers all liquid investments with maturities of three months or less to be cash equivalents. (e) Trade Receivables Trade receivables primarily include amounts due from vendor rebates, debit and credit card sales and third party insurance pharmacy billings. (f) Inventories Inventories are valued at the lower of cost or market. The dollar value last-in, first-out (LIFO) method was used to determine the cost for 84% and 85% of inventories as of December 26, 2020 and December 28, 2019, respectively. Under this method, inventory is stated at cost, which is determined by applying a cost-to-retail ratio to each similar merchandise category’s ending retail value. The cost of the remaining inventories was determined using the first-in, first-out (FIFO) method. The FIFO cost of inventory approximates replacement or current cost. The FIFO method is used to value certain manufactured, seasonal, perishable and other miscellaneous inventory items due to fluctuating costs and inconsistent product availability. The Company also reduces inventory for estimated losses related to shrink. If all inventories were valued using the FIFO method, inventories and current assets would have been higher than reported by $548,749,000 and $528,997,000 as of December 26, 2020 and December 28, 2019, respectively. (g) Investments In 2020, the Company adopted the Accounting Standards Update (ASU) requiring companies to recognize credit losses on debt securities in earnings through an allowance that is reevaluated each reporting period. The Company adopted the ASU on a prospective basis as of December 29, 2019. Prior to the adoption of the ASU, credit losses in which the Company did not expect to recover the cost of the debt security were recognized in earnings as an other-than-temporary impairment. The adoption of the ASU did not have a material effect on the Company’s financial position, results of operations or cash flows. Debt securities are classified as available-for-sale and measured at fair value. The Company evaluates debt securities on an individual security basis to determine if an unrealized loss is due to a credit loss or other factors, including interest rate fluctuations. The collectability of debt securities is evaluated based on criteria that include the extent to which the cost (cost of the debt security adjusted for amortization of premium or accretion of discount) exceeds fair value, the credit rating of the issuer or security, the failure of the issuer to make scheduled principal or interest payments and the financial health and prospects of the issuer or security. Credit losses on debt securities the Company does not intend to sell and will not be required to sell prior to any anticipated recovery are recognized in earnings through an allowance. The allowance is measured as the difference between the present value of expected cash flows and the cost of the debt security, limited to the difference between the cost and the fair value of the debt security. Expected cash flows are discounted using the debt security’s effective interest rate. Subsequent changes to the allowance are recognized in earnings in the period of the change. Credit losses on debt securities the Company intends to sell or will be required to sell prior to any anticipated recovery are recognized in earnings and measured as the difference between the cost and the fair value of the debt security. Other unrealized losses on debt securities the Company does not intend to sell and will not be required to sell prior to any anticipated recovery are reported in other comprehensive earnings net of income taxes and included as a component of stockholders’ equity. Other unrealized losses on debt securities the Company intends to sell or will be required to sell prior to any anticipated recovery are recognized in earnings and measured as the difference between the cost and the fair value of the debt security. 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). Interest and dividend income, amortization of premiums, accretion of discounts and realized gains and losses on debt and equity securities are included in investment income. Interest income is accrued as earned. Dividend income is recognized as income on the ex-dividend date. The cost of debt and equity securities sold is based on the specific identification method. (h) Leases The Company conducts a major portion of its retail operations from leased locations. The Company determines whether a lease exists at inception. Initial lease terms are typically 20 years followed by five Operating lease expense primarily represents fixed lease payments for operating leases recognized on a straight-line basis over the applicable lease term. Variable lease expense represents the payment of real estate taxes, insurance, maintenance and, for certain locations, additional rentals based on a percentage of sales in excess of stipulated minimums (excess rent). The payment of variable real estate taxes, insurance and maintenance is generally based on the Company’s pro-rata share of total shopping center square footage. The Company estimates excess rent, where applicable, based on annual sales projections and uses the straight-line method to amortize the cost. The annual sales projections are reviewed periodically and adjusted if necessary. (i) Property, Plant and Equipment and Depreciation Assets are recorded at cost and depreciated or amortized using the straight-line method over their estimated useful lives or the terms of the related leases, if shorter, as follows: buildings and improvements (10–40 years); furniture, fixtures and equipment (3–20 years); and leasehold improvements (10–20 years). Maintenance and repairs are expensed as incurred. Expenditures for renewals and betterments are capitalized. The gain or loss realized on disposed assets or assets to be disposed of is recorded in earnings. (j) Long-Lived Assets The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the net book value of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the net book value of an asset to the future net undiscounted cash flows expected to be generated by the asset. An impairment loss is recorded for the excess of the net book value over the fair value of the asset. The fair value is estimated based on expected discounted future cash flows. Assets to be disposed of are reported at the lower of the carrying amount or fair value less cost to sell and are no longer depreciated or amortized. Long-lived assets, including operating lease right-of-use assets, buildings and improvements, leasehold improvements, and furniture, fixtures and equipment, are evaluated for impairment at the supermarket level. (k) Self-Insurance The Company is generally self-insured for claims related to health care, employee benefits, workers’ compensation, general liability, property, plant and equipment, fleet liability and directors and officers liability. The Company uses third party insurance in certain instances to partially mitigate the risk related to these potential losses. Self-insurance reserves are established for health care, workers’ compensation, general liability and fleet liability claims. These reserves are determined based on actual claims experience and an estimate of claims incurred but not reported including, where necessary, actuarial studies. Actuarial projections of losses for general liability and workers’ compensation claims are discounted. (l) Postretirement Benefit The Company provides a postretirement life insurance benefit for certain salaried and hourly full-time employees who meet the eligibility requirements. Effective January 1, 2002, the Company amended the postretirement life insurance benefit under its Group Life Insurance Plan. To receive the postretirement life insurance benefit after the amendment, an employee must have had at least five Actuarial projections are used to calculate the year end postretirement benefit obligation, discounted using a yield curve methodology based on high quality bonds with a rating of AA or better. Actuarial losses are amortized from accumulated other comprehensive earnings into net periodic postretirement benefit cost over future years when the accumulation of such losses exceeds 10% of the year end postretirement benefit obligation. (m) Comprehensive Earnings Comprehensive earnings include net earnings and other comprehensive earnings. Other comprehensive earnings include revenues, expenses, gains and losses that have been excluded from net earnings and recorded directly to stockholders’ equity. Included in other comprehensive earnings are certain unrealized gains and losses on debt securities and adjustments to the postretirement benefit obligation net of income taxes. (n) Revenue Recognition The Company sells grocery (including dairy, produce, floral, deli, bakery, meat and seafood), health and beauty care, general merchandise, pharmacy and other products and services. Grocery was 85% of sales for 2020 and 84% of sales for 2019 and 2018. All other products and services were 15% of sales for 2020 and 16% of sales for 2019 and 2018. Revenue is recognized at the point of sale for retail sales. Customer returns are immaterial. Vendor coupons that are reimbursed are accounted for as sales. Coupons and other sales incentives offered by the Company that are not reimbursed are recorded as a reduction of sales. The Company records sales net of applicable sales taxes. (o) Other Operating Income Other operating income is recognized on a net basis as earned. Other operating income includes income generated from other activities, primarily automated teller transaction fees, licensee sales commissions, lottery commissions, mall gift card commissions, money order commissions, money transfer fees and vending machine commissions. (p) Cost of Merchandise Sold Cost of merchandise sold includes costs of inventory and costs related to in-store production. Cost of merchandise sold also includes inbound freight charges, purchasing and receiving costs, warehousing costs and other costs of the Company’s distribution network. Rebates received from a vendor in connection with the purchase or promotion of the vendor’s products are recognized as a reduction of cost of merchandise sold as earned. These vendor rebates are recognized as earned in accordance with the underlying agreement with the vendor and completion of the earnings process. Short-term vendor agreements with advance payment provisions are recorded as a current liability and recognized over the appropriate period as earned according to the underlying agreements. Long-term vendor agreements with advance payment provisions are recorded as a noncurrent liability and recognized over the appropriate period as earned according to the underlying agreements. (q) Advertising Costs Advertising costs are expensed as incurred and were $244,839,000, $245,403,000 and $249,123,000 for 2020, 2019 and 2018, respectively. (r) Other Nonoperating Income, net Other nonoperating income, net includes rent from tenants in owned shopping centers, net of related expenses, and other miscellaneous nonoperating income. (s) Income Taxes Deferred income taxes are established for temporary differences between financial and tax reporting bases and are subsequently adjusted to reflect changes in income tax rates expected to be in effect when the temporary differences reverse. The Company recognizes accrued interest and penalties related to income tax liabilities as a component of income tax expense. The Company invests in certain investment related tax credits that promote affordable housing and renewable energy. These investments generate a return primarily through the realization of federal and state tax credits and other tax benefits. The Company accounts for its affordable housing investments using the proportional amortization method. Under this method, the investment is amortized into income tax expense in proportion to the tax credits received and the investment tax credits are recognized as a reduction of income tax expense. The Company accounts for its renewable energy investments using the deferral method. Under this method, the investment tax credits are recognized as a reduction of the renewable energy investments. (t) Common Stock and Earnings Per Share Earnings per share is calculated by dividing net earnings by the weighted average shares outstanding. Basic and diluted earnings per share are the same because the Company does not have options or other stock compensation programs that impact the calculation of diluted earnings per share. All shares owned by the Employee Stock Ownership Plan (ESOP) are included in the earnings per share calculations. Dividends paid to the ESOP, as well as dividends on all other common stock shares, are reflected as a reduction of retained earnings. All common stock shares, including ESOP and 401(k) Plan shares, receive one vote per share and have the same dividend rights. The voting rights for ESOP shares allocated to participants’ accounts are passed through to the participants. The Trustee of the Company’s common stock in the 401(k) Plan votes the shares held in that plan. (u) Use of Estimates The preparation of financial statements in conformity with U.S. generally accepted accounting principles 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	12 Months Ended
	Dec. 26, 2020
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments [Text Block]	(2) 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 and individual equity securities). 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 December 26, 2020 and December 28, 2019: Fair Value Level 1 Level 2 Level 3 (Amounts are in thousands) December 26, 2020 $ 11,288,199 1,465,987 9,822,212 — December 28, 2019 8,426,385 2,028,547 6,397,838 —

Investments (Notes)

Investments (Notes)	12 Months Ended
	Dec. 26, 2020
Investments, Debt and Equity Securities [Abstract]
Investments Disclosure [Text Block]	(3) Investments (a) Debt Securities Following is a summary of debt securities as of December 26, 2020 and December 28, 2019: Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Amounts are in thousands) 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 2019 Tax exempt bonds $ 767,931 3,429 130 771,230 Taxable bonds 5,002,036 120,132 1,443 5,120,725 Restricted investments 169,983 10,101 — 180,084 $ 5,939,950 133,662 1,573 6,072,039 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 December 26, 2020 and December 28, 2019 are as follows: 2020 2019 Cost Fair Value Cost Fair Value (Amounts are in thousands) Due in one year or less $ 677,453 682,965 437,236 438,105 Due after one year through five years 5,330,696 5,533,074 3,836,333 3,900,904 Due after five years through ten years 2,886,333 2,978,301 1,661,143 1,727,594 Due after ten years 3,686 3,952 5,238 5,436 $ 8,898,168 9,198,292 5,939,950 6,072,039 The Company had no debt securities with credit losses as of December 26, 2020. Following is a summary of debt securities with other unrealized losses by the time period impaired as of December 26, 2020 and December 28, 2019: 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) 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 2019 Tax exempt bonds $ 48,462 11 99,976 119 148,438 130 Taxable bonds 573,315 888 197,641 555 770,956 1,443 $ 621,777 899 297,617 674 919,394 1,573 There are 51 debt securities contributing to the total unrealized losses of $8,412,000 as of December 26, 2020. 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 The fair value of equity securities was $2,089,907,000 and $2,354,346,000 as of December 26, 2020 and December 28, 2019, 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 2020, 2019 and 2018: 2020 2019 2018 (Amounts are in thousands) Interest and dividend income $ 199,435 186,748 129,953 Net realized gain on investments 396,584 104,905 109,547 596,019 291,653 239,500 Fair value adjustment, due to net unrealized gain (loss), on equity securities held at end of year 554,547 472,490 (107,466) Net (gain) loss on sale of equity securities previously recognized through fair value adjustment (175,560) 50,229 (75,335) $ 975,006 814,372 56,699

Lessee, Leases (Notes)

Lessee, Leases (Notes)	12 Months Ended
	Dec. 26, 2020
Lessee Disclosure [Abstract]
Lessee, Operating Leases [Text Block]	Lessee In 2019, the Company adopted the ASU requiring the lease rights and obligations arising from existing and new lease agreements be recognized as assets and liabilities on the balance sheet. The Company adopted the ASU on a modified retrospective basis and elected the transitional provisions eliminating the requirement to restate reporting periods prior to the date of adoption. The adoption of the ASU did not have a material effect on the Company’s results of operations and had no effect on the Company’s cash flows. Following is a summary of finance lease right-of-use assets included in net property, plant and equipment and finance lease liabilities included in other accrued expenses and other noncurrent liabilities as of December 26, 2020 and December 28, 2019. 2020 2019 (Amounts are in thousands) Finance lease right-of-use assets $ 291,556 154,217 Finance lease liabilities: Current 25,254 29,480 Noncurrent 246,411 104,806 Lease expense for 2020 and 2019 was as follows: 2020 2019 (Amounts are in thousands) Operating lease expense $ 443,063 434,555 Finance lease expense: Amortization of right-of-use assets 9,850 8,128 Interest on lease liabilities 4,651 3,105 Variable lease expense 159,236 147,463 Sublease rental income (2,819) (2,874) $ 613,981 590,377 Supplemental cash flow information related to leases for 2020 and 2019 was as follows: 2020 2019 (Amounts are in thousands) Operating cash flows from rent paid for operating lease liabilities $ 436,988 422,596 Right-of-use assets obtained in exchange for new lease liabilities: Operating leases 364,757 463,727 Finance leases 174,307 65,539 The weighted average remaining lease term and weighted average discount rate as of December 26, 2020 and December 28, 2019 are as follows: 2020 2019 Weighted average remaining lease term: Operating leases 12 years 12 years Finance leases 19 years 18 years Weighted average discount rate: Operating leases 3.4 % 3.5 % Finance leases 3.3 % 3.9 % Maturities of lease liabilities as of December 26, 2020 are as follows: Year Operating Leases Finance Leases (Amounts are in thousands) 2021 $ 438,358 32,962 2022 414,464 18,163 2023 372,632 32,879 2024 326,523 17,194 2025 275,623 17,194 Thereafter 1,797,109 233,575 3,624,709 351,967 Less: Imputed interest (690,646) (80,302) $ 2,934,063 271,665 As of December 26, 2020, the Company has lease agreements that have not yet commenced with fixed lease payments totaling $359,498,000. These leases will commence in future periods with terms ranging up to 20 years. Prior to the adoption of the ASU, minimum rentals represented fixed lease obligations, including insurance and maintenance to the extent they were fixed in the lease. Contingent rentals represented variable lease obligations, including real estate taxes, insurance, maintenance and, for certain locations, excess rent. The Company recognized rent expense for operating leases with rent escalation clauses on a straight-line basis over the applicable lease term. Total rental expense for 2018 was as follows: 2018 (Amounts are in thousands) Minimum rentals $ 449,138 Contingent rentals 133,382 Sublease rental income (4,339) $ 578,181
Lessee, Finance Leases [Text Block]	Lessee In 2019, the Company adopted the ASU requiring the lease rights and obligations arising from existing and new lease agreements be recognized as assets and liabilities on the balance sheet. The Company adopted the ASU on a modified retrospective basis and elected the transitional provisions eliminating the requirement to restate reporting periods prior to the date of adoption. The adoption of the ASU did not have a material effect on the Company’s results of operations and had no effect on the Company’s cash flows. Following is a summary of finance lease right-of-use assets included in net property, plant and equipment and finance lease liabilities included in other accrued expenses and other noncurrent liabilities as of December 26, 2020 and December 28, 2019. 2020 2019 (Amounts are in thousands) Finance lease right-of-use assets $ 291,556 154,217 Finance lease liabilities: Current 25,254 29,480 Noncurrent 246,411 104,806 Lease expense for 2020 and 2019 was as follows: 2020 2019 (Amounts are in thousands) Operating lease expense $ 443,063 434,555 Finance lease expense: Amortization of right-of-use assets 9,850 8,128 Interest on lease liabilities 4,651 3,105 Variable lease expense 159,236 147,463 Sublease rental income (2,819) (2,874) $ 613,981 590,377 Supplemental cash flow information related to leases for 2020 and 2019 was as follows: 2020 2019 (Amounts are in thousands) Operating cash flows from rent paid for operating lease liabilities $ 436,988 422,596 Right-of-use assets obtained in exchange for new lease liabilities: Operating leases 364,757 463,727 Finance leases 174,307 65,539 The weighted average remaining lease term and weighted average discount rate as of December 26, 2020 and December 28, 2019 are as follows: 2020 2019 Weighted average remaining lease term: Operating leases 12 years 12 years Finance leases 19 years 18 years Weighted average discount rate: Operating leases 3.4 % 3.5 % Finance leases 3.3 % 3.9 % Maturities of lease liabilities as of December 26, 2020 are as follows: Year Operating Leases Finance Leases (Amounts are in thousands) 2021 $ 438,358 32,962 2022 414,464 18,163 2023 372,632 32,879 2024 326,523 17,194 2025 275,623 17,194 Thereafter 1,797,109 233,575 3,624,709 351,967 Less: Imputed interest (690,646) (80,302) $ 2,934,063 271,665 As of December 26, 2020, the Company has lease agreements that have not yet commenced with fixed lease payments totaling $359,498,000. These leases will commence in future periods with terms ranging up to 20 years. Prior to the adoption of the ASU, minimum rentals represented fixed lease obligations, including insurance and maintenance to the extent they were fixed in the lease. Contingent rentals represented variable lease obligations, including real estate taxes, insurance, maintenance and, for certain locations, excess rent. The Company recognized rent expense for operating leases with rent escalation clauses on a straight-line basis over the applicable lease term. Total rental expense for 2018 was as follows: 2018 (Amounts are in thousands) Minimum rentals $ 449,138 Contingent rentals 133,382 Sublease rental income (4,339) $ 578,181

Lessor, Leases (Notes)

Lessor, Leases (Notes)	12 Months Ended
	Dec. 26, 2020
Lessor Disclosure [Abstract]
Lessor, Operating Leases [Text Block]	(b) Lessor The Company leases space in owned shopping centers to tenants under noncancelable operating leases. The Company determines whether a lease exists at inception. Initial lease terms are typically five years followed by five year renewal options and may include rent escalation clauses. Lease income primarily represents fixed lease payments from tenants recognized on a straight-line basis over the applicable lease term. Variable lease income represents tenant payments for real estate taxes, insurance, maintenance and, for certain locations, excess rent. Total lease income was $172,309,000, $190,785,000 and $183,963,000 for 2020, 2019 and 2018, respectively. Total lease income for 2020 and 2019 was as follows: 2020 2019 (Amounts are in thousands) Lease income $ 133,512 149,313 Variable lease income 38,797 41,472 $ 172,309 190,785 In 2020, the Company offered two months of rent relief to tenants in Company owned shopping centers that were impacted by the coronavirus pandemic. The rent relief was recorded as a reduction to lease income and variable lease income. Future fixed lease payments for all noncancelable operating leases as of December 26, 2020 are as follows: Year (Amounts are in thousands) 2021 $ 149,716 2022 122,580 2023 97,354 2024 69,995 2025 44,908 Thereafter 159,256 $ 643,809

Consolidation of Joint Ventures

Consolidation of Joint Ventures and Long-Term Debt (Notes)	12 Months Ended
	Dec. 26, 2020
Consolidation Of Joint Ventures And Long Term Debt [Abstract]
Consolidation of Joint Ventures and Long-Term Debt [Text Block]	(5) Consolidation of Joint Ventures and Long-Term Debt From 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. The Company is considered to have a controlling financial interest in a JV when it has (1) the power to direct the activities of the JV that most significantly impact the JV’s economic performance and (2) the obligation to absorb losses or the right to receive benefits from the JV that could potentially be significant to such JV. The Company evaluates a JV using specific criteria to determine whether the Company has a controlling financial interest and is the primary beneficiary of the JV. Factors considered in determining whether the Company is the primary beneficiary include risk and reward sharing, experience and financial condition of the other JV members, voting rights, involvement in routine capital and operating decisions and each member’s influence over the JV owned shopping center’s economic performance. Generally, most major JV decision making is shared between all members. In particular, the use and sale of JV assets, business plans and budgets are generally required to be approved by all members. However, the Company, through its anchor tenant operating lease agreement, has the power to direct the activities that most significantly influence the economic performance of the JV owned shopping center. Additionally, through its member equity interest in the JV, the Company will receive a significant portion of the JV’s benefits or is obligated to absorb a significant portion of the JV’s losses. Substantially all of the JVs are consolidated as the Company is the primary beneficiary of the JVs. 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. As of December 28, 2019, the carrying amounts of the assets and liabilities of the consolidated JVs were $154,659,000 and $78,472,000, 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 2020, 2019 and 2018 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 2020 or 2019. Maturities of JV loans range from January 2021 through April 2027 and have variable interest rates based on a LIBOR index plus 175 to 250 basis points. Maturities of assumed shopping center loans range from April 2021 through January 2027 and have fixed interest rates ranging from 3.7% to 7.5%. As of December 26, 2020, the aggregate annual maturities and scheduled payments of long-term debt are as follows: Year (Amounts are in thousands) 2021 $ 36,392 2022 25,238 2023 38,694 2024 32,165 2025 400 Thereafter 27,338 $ 160,227

Retirement Plans (Notes)

Retirement Plans (Notes)	12 Months Ended
	Dec. 26, 2020
Retirement Benefits [Abstract]
Retirement Plans [Text Block]	(6) Retirement Plans The Company has a trusteed, noncontributory ESOP for the benefit of eligible employees. The Company recognizes an expense related to the Company’s discretionary contribution to the ESOP that is approved by the Board of Directors each year. ESOP contributions can be made in Company common stock or cash. Compensation expense recorded for contributions to this plan was $417,800,000, $370,778,000 and $337,712,000 for 2020, 2019 and 2018, respectively. 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 $444,801,000 and $287,328,000 as of December 26, 2020 and December 28, 2019, respectively. The cost of the shares held by the ESOP totaled $3,039,748,000 and $2,971,902,000 as of December 26, 2020 and December 28, 2019, 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 consolidated balance sheets and totaled $3,484,549,000 and $3,259,230,000 as of December 26, 2020 and December 28, 2019, respectively. The fair value of the shares held by the ESOP totaled $9,976,034,000 and $8,585,189,000 as of December 26, 2020 and December 28, 2019, respectively. The Company has a 401(k) Plan for the benefit of eligible employees. The 401(k) Plan is a voluntary defined contribution plan. Effective January 1, 2020, eligible employees may contribute up to 30% of their eligible annual compensation, subject to the maximum contribution limits established by federal law. Previously, eligible employees could contribute up to 10% of their eligible annual compensation, subject to the maximum contribution limits established by federal law. The Company may make a discretionary annual matching contribution to eligible participants of this plan as determined by the Board of Directors. During 2020, 2019 and 2018, the Board of Directors approved a match of 50% of eligible annual contributions up to 3% of eligible annual compensation, not to exceed a maximum match of $750 per employee. Compensation expense recorded for the Company’s match to the 401(k) Plan was $39,858,000, $38,112,000 and $34,980,000 for 2020, 2019 and 2018, respectively. The Company intends to continue its retirement plans; however, the right to modify, amend, terminate or merge these plans has been reserved. In the event of termination, all amounts contributed under the plans must be paid to the participants or their beneficiaries.

Income Taxes (Notes)

Income Taxes (Notes)	12 Months Ended
	Dec. 26, 2020
Income Tax Disclosure [Abstract]
Income Taxes Disclosure [Text Block]	(7) Income Taxes Total income taxes for 2020, 2019 and 2018 were allocated as follows: 2020 2019 2018 (Amounts are in thousands) Earnings $ 1,064,817 780,591 539,801 Other comprehensive earnings (losses) 40,682 46,723 (3,440) $ 1,105,499 827,314 536,361 The provision for income taxes consists of the following: Current Deferred Total (Amounts are in thousands) 2020 Federal $ 871,187 56,382 927,569 State 144,074 (6,826) 137,248 $ 1,015,261 49,556 1,064,817 2019 Federal $ 504,047 171,422 675,469 State 61,540 43,582 105,122 $ 565,587 215,004 780,591 2018 Federal $ 413,735 59,377 473,112 State 62,821 3,868 66,689 $ 476,556 63,245 539,801 A reconciliation of the provision for income taxes at the federal statutory income tax rate of 21% to earnings before income taxes compared to the Company’s actual income tax expense is as follows: 2020 2019 2018 (Amounts are in thousands) Federal tax at statutory income tax rate $ 1,057,698 795,057 613,403 State income taxes (net of federal tax benefit) 108,426 83,046 52,684 ESOP dividend (47,449) (45,493) (41,175) Other, net (53,858) (52,019) (85,111) $ 1,064,817 780,591 539,801 The tax effects of temporary differences that give rise to significant portions of deferred income taxes as of December 26, 2020 and December 28, 2019 are as follows: 2020 2019 (Amounts are in thousands) Deferred tax liabilities and (assets): Lease assets $ 789,369 770,182 Property, plant and equipment 719,212 671,864 Investments 337,147 176,744 Inventories 30,906 30,398 Lease liabilities (815,024) (781,250) Self-insurance reserves (84,509) (80,655) Payroll tax deferral (75,770) — Retirement plan contributions (48,390) (46,196) Postretirement benefit cost (35,031) (32,064) Vendor rebates (18,517) (15,299) Other (26,671) (11,240) $ 772,722 682,484 The Company expects the results of future operations and the reversal of deferred tax liabilities to generate sufficient taxable income to allow utilization of deferred tax assets; therefore, no valuation allowance has been recorded as of December 26, 2020 and December 28, 2019. The Company has analyzed filing positions in all of the federal and state jurisdictions where it is required to file income tax returns as well as all open tax years in these jurisdictions. The periods subject to examination for the Company’s federal income tax returns are the 2017 through 2019 tax years. The periods subject to examination for the Company’s state income tax returns are the 2015 through 2019 tax years. The Company believes that the outcome of any examinations will not have a material effect on its financial condition, results of operations or cash flows. The Company had no unrecognized tax benefits in 2020 and 2019. As a result, there will be no effect on the Company’s effective income tax rate in future periods due to the recognition of unrecognized tax benefits.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Earnings (Losses) (Notes)	12 Months Ended
	Dec. 26, 2020
Equity [Abstract]
Accumulated Other Comprehensive Earnings (Losses)[Text Block]	(8) Accumulated Other Comprehensive Earnings (Losses) A reconciliation of the changes in accumulated other comprehensive earnings (losses) net of income taxes for 2020, 2019 and 2018 is as follows: Investments Postretirement Benefit Accumulated Other Comprehensive Earnings (Losses) (Amounts are in thousands) Balances at December 30, 2017 $ 168,057 (15,421) 152,636 Unrealized loss on debt securities (19,126) — (19,126) Net realized loss on debt securities reclassified to investment income 346 — 346 Adjustment to postretirement benefit obligation — 8,692 8,692 Net other comprehensive (losses) earnings (18,780) 8,692 (10,088) Cumulative effect of net unrealized gain on equity securities reclassified to retained earnings (198,310) — (198,310) Balances at December 29, 2018 (49,033) (6,729) (55,762) Unrealized gain on debt securities 148,141 — 148,141 Net realized gain on debt securities reclassified to investment income (602) — (602) Adjustment to postretirement benefit obligation — (10,488) (10,488) Net other comprehensive earnings (losses) 147,539 (10,488) 137,051 Balances at December 28, 2019 98,506 (17,217) 81,289 Unrealized gain on debt securities 138,989 — 138,989 Net realized gain on debt securities reclassified to investment income (13,591) — (13,591) Adjustment to postretirement benefit obligation — (5,736) (5,736) Net other comprehensive earnings (losses) 125,398 (5,736) 119,662 Balances at December 26, 2020 $ 223,904 (22,953) 200,951 In 2018, the Company adopted the ASU requiring equity securities be measured at fair value with net unrealized gains and losses from changes in the fair value recognized in earnings. Prior to the adoption of the ASU, equity securities were classified as available-for-sale and measured at fair value. Changes in fair value determined to be temporary were reported in other comprehensive earnings net of income taxes. Upon adoption of the ASU, the Company reclassified the cumulative effect of the net unrealized gain on equity securities net of income taxes as of December 31, 2017 of $198,310,000 from accumulated other comprehensive earnings to retained earnings.

Commitments and Contingencies (

Commitments and Contingencies (Notes)	12 Months Ended
	Dec. 26, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies [Text Block]	(9) Commitments and Contingencies (a) Letters of Credit As of December 26, 2020, the Company had outstanding $9,118,000 in trade letters of credit and $3,709,000 in standby letters of credit to support certain purchase obligations. (b) Litigation The Company is subject from time to time to various lawsuits, claims and charges arising in the normal course of business. The Company believes its recorded reserves are adequate in light of the probable and estimable liabilities. The estimated amount of reasonably possible losses for lawsuits, claims and charges, individually and in the aggregate, is considered to be immaterial. In the opinion of management, the ultimate resolution of these legal proceedings will not have a material adverse effect on the Company’s financial condition, results of operations or cash flows.

Subsequent Event (Notes)

Subsequent Event (Notes)	12 Months Ended
	Dec. 26, 2020
Subsequent Events [Abstract]
Subsequent Events [Text Block]	(10)    Subsequent EventOn January 4, 2021, the Company declared a quarterly dividend on its common stock of $0.32 per share or $221,000,000, payable February 1, 2021 to stockholders of record as of the close of business January 15, 2021.

Quarterly Information (unaudite

Quarterly Information (unaudited) (Notes)	12 Months Ended
	Dec. 26, 2020
Quarterly Financial Information Disclosure [Abstract]
Quarterly Information (unaudited) [Text Block]	(11) Quarterly Information (unaudited) Following is a summary of the quarterly results of operations for 2020 and 2019. All quarters have 13 weeks. First Second Third Fourth (Amounts are in thousands, except per share amounts) 2020 Revenues $ 11,306,951 11,468,563 11,136,409 11,292,036 Costs and expenses 10,155,340 10,391,518 10,260,086 10,385,042 Net earnings 667,335 1,367,055 917,584 1,019,864 Earnings per share 0.94 1.94 1.31 1.47 2019 Revenues $ 9,760,110 9,446,916 9,417,933 9,837,794 Costs and expenses 8,903,535 8,767,478 8,805,903 9,096,588 Net earnings 980,971 661,057 574,026 789,341 Earnings per share 1.37 0.92 0.81 1.11 Following is a summary of the quarterly net earnings and earnings per share excluding the impact of net unrealized gains and losses on equity securities for 2020 and 2019. First Second Third Fourth (Amounts are in thousands, except per share amounts) 2020 Net earnings $ 956,200 978,300 836,200 918,500 Earnings per share 1.35 1.39 1.20 1.32 2019 Net earnings $ 741,700 637,000 580,300 656,600 Earnings per share 1.04 0.89 0.81 0.93

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts (Notes)	12 Months Ended
	Dec. 26, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts [Text Block]	Schedule II PUBLIX SUPER MARKETS, INC. Valuation and Qualifying Accounts Years ended December 26, 2020, December 28, 2019 and December 29, 2018 Balance at Year Additions Income Deductions Reserves Balance at Year (Amounts are in thousands) 2020 Reserves not deducted from assets: Self-insurance reserves: Current $ 149,082 396,185 384,044 161,223 Noncurrent 226,727 9,131 — 235,858 $ 375,809 405,316 384,044 397,081 2019 Reserves not deducted from assets: Self-insurance reserves: Current $ 145,241 398,336 394,495 149,082 Noncurrent 222,419 4,308 — 226,727 $ 367,660 402,644 394,495 375,809 2018 Reserves not deducted from assets: Self-insurance reserves: Current $ 137,100 403,598 395,457 145,241 Noncurrent 218,598 3,821 — 222,419 $ 355,698 407,419 395,457 367,660

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 26, 2020
Accounting Policies [Abstract]
Business [Text Block]	BusinessPublix Super Markets, Inc. and its wholly owned subsidiaries (Company) are in the business of operating retail food supermarkets in Florida, Georgia, Alabama, South Carolina, North Carolina, Tennessee and Virginia. The Company was founded in 1930 and later merged into another corporation that was originally incorporated in 1921. The Company has no other significant lines of business or industry segments.
Principles of Consolidation [Policy Text Block]	Principles of ConsolidationThe consolidated financial statements include the accounts of the Company, its wholly owned subsidiaries and certain joint ventures in which the Company has a controlling financial interest. All significant intercompany balances and transactions are eliminated in consolidation.
Fiscal Year [Policy Text Block]	Fiscal YearThe Company’s fiscal year ends on the last Saturday in December. Fiscal years 2020, 2019 and 2018 include 52 weeks.
Cash Equivalents [Policy Text Block]	Cash EquivalentsThe Company considers all liquid investments with maturities of three months or less to be cash equivalents.
Trade Receivables [Policy Text Block]	Trade ReceivablesTrade receivables primarily include amounts due from vendor rebates, debit and credit card sales and third party insurance pharmacy billings.
Inventories [Policy Text Block]	InventoriesInventories are valued at the lower of cost or market. The dollar value last-in, first-out (LIFO) method was used to determine the cost for 84% and 85% of inventories as of December 26, 2020 and December 28, 2019, respectively. Under this method, inventory is stated at cost, which is determined by applying a cost-to-retail ratio to each similar merchandise category’s ending retail value. The cost of the remaining inventories was determined using the first-in, first-out (FIFO) method. The FIFO cost of inventory approximates replacement or current cost. The FIFO method is used to value certain manufactured, seasonal, perishable and other miscellaneous inventory items due to fluctuating costs and inconsistent product availability. The Company also reduces inventory for estimated losses related to shrink. If all inventories were valued using the FIFO method, inventories and current assets would have been higher than reported by $548,749,000 and $528,997,000 as of December 26, 2020 and December 28, 2019, respectively.
Investments [Policy Text Block]	Investments In 2020, the Company adopted the Accounting Standards Update (ASU) requiring companies to recognize credit losses on debt securities in earnings through an allowance that is reevaluated each reporting period. The Company adopted the ASU on a prospective basis as of December 29, 2019. Prior to the adoption of the ASU, credit losses in which the Company did not expect to recover the cost of the debt security were recognized in earnings as an other-than-temporary impairment. The adoption of the ASU did not have a material effect on the Company’s financial position, results of operations or cash flows. Debt securities are classified as available-for-sale and measured at fair value. The Company evaluates debt securities on an individual security basis to determine if an unrealized loss is due to a credit loss or other factors, including interest rate fluctuations. The collectability of debt securities is evaluated based on criteria that include the extent to which the cost (cost of the debt security adjusted for amortization of premium or accretion of discount) exceeds fair value, the credit rating of the issuer or security, the failure of the issuer to make scheduled principal or interest payments and the financial health and prospects of the issuer or security. Credit losses on debt securities the Company does not intend to sell and will not be required to sell prior to any anticipated recovery are recognized in earnings through an allowance. The allowance is measured as the difference between the present value of expected cash flows and the cost of the debt security, limited to the difference between the cost and the fair value of the debt security. Expected cash flows are discounted using the debt security’s effective interest rate. Subsequent changes to the allowance are recognized in earnings in the period of the change. Credit losses on debt securities the Company intends to sell or will be required to sell prior to any anticipated recovery are recognized in earnings and measured as the difference between the cost and the fair value of the debt security. Other unrealized losses on debt securities the Company does not intend to sell and will not be required to sell prior to any anticipated recovery are reported in other comprehensive earnings net of income taxes and included as a component of stockholders’ equity. Other unrealized losses on debt securities the Company intends to sell or will be required to sell prior to any anticipated recovery are recognized in earnings and measured as the difference between the cost and the fair value of the debt security. 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).
Lessee, Leases [Policy Text Block]	Leases The Company conducts a major portion of its retail operations from leased locations. The Company determines whether a lease exists at inception. Initial lease terms are typically 20 years followed by five Operating lease expense primarily represents fixed lease payments for operating leases recognized on a straight-line basis over the applicable lease term. Variable lease expense represents the payment of real estate taxes, insurance, maintenance and, for certain locations, additional rentals based on a percentage of sales in excess of stipulated minimums (excess rent). The payment of variable real estate taxes, insurance and maintenance is generally based on the Company’s pro-rata share of total shopping center square footage. The Company estimates excess rent, where applicable, based on annual sales projections and uses the straight-line method to amortize the cost. The annual sales projections are reviewed periodically and adjusted if necessary.
Property, Plant and Equipment and Depreciation [Policy Text Block]	Property, Plant and Equipment and Depreciation Assets are recorded at cost and depreciated or amortized using the straight-line method over their estimated useful lives or the terms of the related leases, if shorter, as follows: buildings and improvements (10–40 years); furniture, fixtures and equipment (3–20 years); and leasehold improvements (10–20 years). Maintenance and repairs are expensed as incurred. Expenditures for renewals and betterments are capitalized. The gain or loss realized on disposed assets or assets to be disposed of is recorded in earnings.
Long-Lived Assets [Policy Text Block]	Long-Lived AssetsThe Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the net book value of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the net book value of an asset to the future net undiscounted cash flows expected to be generated by the asset. An impairment loss is recorded for the excess of the net book value over the fair value of the asset. The fair value is estimated based on expected discounted future cash flows. Assets to be disposed of are reported at the lower of the carrying amount or fair value less cost to sell and are no longer depreciated or amortized. Long-lived assets, including operating lease right-of-use assets, buildings and improvements, leasehold improvements, and furniture, fixtures and equipment, are evaluated for impairment at the supermarket level.
Self-Insurance [Policy Text Block]	Self-InsuranceThe Company is generally self-insured for claims related to health care, employee benefits, workers’ compensation, general liability, property, plant and equipment, fleet liability and directors and officers liability. The Company uses third party insurance in certain instances to partially mitigate the risk related to these potential losses. Self-insurance reserves are established for health care, workers’ compensation, general liability and fleet liability claims. These reserves are determined based on actual claims experience and an estimate of claims incurred but not reported including, where necessary, actuarial studies. Actuarial projections of losses for general liability and workers’ compensation claims are discounted.
Postretirement Benefit [Policy Text Block]	Postretirement Benefit The Company provides a postretirement life insurance benefit for certain salaried and hourly full-time employees who meet the eligibility requirements. Effective January 1, 2002, the Company amended the postretirement life insurance benefit under its Group Life Insurance Plan. To receive the postretirement life insurance benefit after the amendment, an employee must have had at least five Actuarial projections are used to calculate the year end postretirement benefit obligation, discounted using a yield curve methodology based on high quality bonds with a rating of AA or better. Actuarial losses are amortized from accumulated other comprehensive earnings into net periodic postretirement benefit cost over future years when the accumulation of such losses exceeds 10% of the year end postretirement benefit obligation.
Comprehensive Earnings [Policy Text Block]	Comprehensive EarningsComprehensive earnings include net earnings and other comprehensive earnings. Other comprehensive earnings include revenues, expenses, gains and losses that have been excluded from net earnings and recorded directly to stockholders’ equity. Included in other comprehensive earnings are certain unrealized gains and losses on debt securities and adjustments to the postretirement benefit obligation net of income taxes.
Revenue Recognition [Policy Text Block]	Revenue Recognition The Company sells grocery (including dairy, produce, floral, deli, bakery, meat and seafood), health and beauty care, general merchandise, pharmacy and other products and services. Grocery was 85% of sales for 2020 and 84% of sales for 2019 and 2018. All other products and services were 15% of sales for 2020 and 16% of sales for 2019 and 2018. Revenue is recognized at the point of sale for retail sales. Customer returns are immaterial. Vendor coupons that are reimbursed are accounted for as sales. Coupons and other sales incentives offered by the Company that are not reimbursed are recorded as a reduction of sales. The Company records sales net of applicable sales taxes.
Other Operating Income [Policy Text Block]	Other Operating IncomeOther operating income is recognized on a net basis as earned. Other operating income includes income generated from other activities, primarily automated teller transaction fees, licensee sales commissions, lottery commissions, mall gift card commissions, money order commissions, money transfer fees and vending machine commissions.
Cost of Merchandise Sold [Policy Text Block]	Cost of Merchandise Sold Cost of merchandise sold includes costs of inventory and costs related to in-store production. Cost of merchandise sold also includes inbound freight charges, purchasing and receiving costs, warehousing costs and other costs of the Company’s distribution network. Rebates received from a vendor in connection with the purchase or promotion of the vendor’s products are recognized as a reduction of cost of merchandise sold as earned. These vendor rebates are recognized as earned in accordance with the underlying agreement with the vendor and completion of the earnings process. Short-term vendor agreements with advance payment provisions are recorded as a current liability and recognized over the appropriate period as earned according to the underlying agreements. Long-term vendor agreements with advance payment provisions are recorded as a noncurrent liability and recognized over the appropriate period as earned according to the underlying agreements.
Advertising Costs [Policy Text Block]	Advertising CostsAdvertising costs are expensed as incurred and were $244,839,000, $245,403,000 and $249,123,000 for 2020, 2019 and 2018, respectively.
Other Nonoperating Income, net [Policy Text Block]	Other Nonoperating Income, netOther nonoperating income, net includes rent from tenants in owned shopping centers, net of related expenses, and other miscellaneous nonoperating income.
Income Taxes [Policy Text Block]	Income TaxesDeferred income taxes are established for temporary differences between financial and tax reporting bases and are subsequently adjusted to reflect changes in income tax rates expected to be in effect when the temporary differences reverse. The Company recognizes accrued interest and penalties related to income tax liabilities as a component of income tax expense. The Company invests in certain investment related tax credits that promote affordable housing and renewable energy. These investments generate a return primarily through the realization of federal and state tax credits and other tax benefits. The Company accounts for its affordable housing investments using the proportional amortization method. Under this method, the investment is amortized into income tax expense in proportion to the tax credits received and the investment tax credits are recognized as a reduction of income tax expense. The Company accounts for its renewable energy investments using the deferral method. Under this method, the investment tax credits are recognized as a reduction of the renewable energy investments.
Common Stock and Earnings Per Share [Policy Text Block]	Common Stock and Earnings Per ShareEarnings per share is calculated by dividing net earnings by the weighted average shares outstanding. Basic and diluted earnings per share are the same because the Company does not have options or other stock compensation programs that impact the calculation of diluted earnings per share. All shares owned by the Employee Stock Ownership Plan (ESOP) are included in the earnings per share calculations. Dividends paid to the ESOP, as well as dividends on all other common stock shares, are reflected as a reduction of retained earnings. All common stock shares, including ESOP and 401(k) Plan shares, receive one vote per share and have the same dividend rights. The voting rights for ESOP shares allocated to participants’ accounts are passed through to the participants. The Trustee of the Company’s common stock in the 401(k) Plan votes the shares held in that plan.
Use of Estimates [Policy Text Block]	Use of EstimatesThe preparation of financial statements in conformity with U.S. generally accepted accounting principles 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)	12 Months Ended
	Dec. 26, 2020
Fair Value Disclosures [Abstract]
Summary of Fair Value Measurements [Table Text Block]	Following is a summary of fair value measurements for investments as of December 26, 2020 and December 28, 2019: Fair Value Level 1 Level 2 Level 3 (Amounts are in thousands) December 26, 2020 $ 11,288,199 1,465,987 9,822,212 — December 28, 2019 8,426,385 2,028,547 6,397,838 —

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 26, 2020
Investments, Debt and Equity Securities [Abstract]
Available For Sale Debt Securities [Table Text Block]	Following is a summary of debt securities as of December 26, 2020 and December 28, 2019: Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Amounts are in thousands) 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 2019 Tax exempt bonds $ 767,931 3,429 130 771,230 Taxable bonds 5,002,036 120,132 1,443 5,120,725 Restricted investments 169,983 10,101 — 180,084 $ 5,939,950 133,662 1,573 6,072,039
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 December 26, 2020 and December 28, 2019 are as follows: 2020 2019 Cost Fair Value Cost Fair Value (Amounts are in thousands) Due in one year or less $ 677,453 682,965 437,236 438,105 Due after one year through five years 5,330,696 5,533,074 3,836,333 3,900,904 Due after five years through ten years 2,886,333 2,978,301 1,661,143 1,727,594 Due after ten years 3,686 3,952 5,238 5,436 $ 8,898,168 9,198,292 5,939,950 6,072,039
Temporarily Impaired Available for Sale Debt Securities by Time Period Impaired [Table Text Bock}	Following is a summary of debt securities with other unrealized losses by the time period impaired as of December 26, 2020 and December 28, 2019: 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) 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 2019 Tax exempt bonds $ 48,462 11 99,976 119 148,438 130 Taxable bonds 573,315 888 197,641 555 770,956 1,443 $ 621,777 899 297,617 674 919,394 1,573
Investment Income [Table Text Block]	Following is a summary of investment income for 2020, 2019 and 2018: 2020 2019 2018 (Amounts are in thousands) Interest and dividend income $ 199,435 186,748 129,953 Net realized gain on investments 396,584 104,905 109,547 596,019 291,653 239,500 Fair value adjustment, due to net unrealized gain (loss), on equity securities held at end of year 554,547 472,490 (107,466) Net (gain) loss on sale of equity securities previously recognized through fair value adjustment (175,560) 50,229 (75,335) $ 975,006 814,372 56,699

Lessee, Leases (Tables)

Lessee, Leases (Tables)	12 Months Ended
	Dec. 26, 2020
Lessee Disclosure [Abstract]
Finance Leases Right-of-Use Assets and Liabilities [Table Text Block]	Following is a summary of finance lease right-of-use assets included in net property, plant and equipment and finance lease liabilities included in other accrued expenses and other noncurrent liabilities as of December 26, 2020 and December 28, 2019. 2020 2019 (Amounts are in thousands) Finance lease right-of-use assets $ 291,556 154,217 Finance lease liabilities: Current 25,254 29,480 Noncurrent 246,411 104,806
Lease, Cost [Table Text Block]	Lease expense for 2020 and 2019 was as follows: 2020 2019 (Amounts are in thousands) Operating lease expense $ 443,063 434,555 Finance lease expense: Amortization of right-of-use assets 9,850 8,128 Interest on lease liabilities 4,651 3,105 Variable lease expense 159,236 147,463 Sublease rental income (2,819) (2,874) $ 613,981 590,377 Supplemental cash flow information related to leases for 2020 and 2019 was as follows: 2020 2019 (Amounts are in thousands) Operating cash flows from rent paid for operating lease liabilities $ 436,988 422,596 Right-of-use assets obtained in exchange for new lease liabilities: Operating leases 364,757 463,727 Finance leases 174,307 65,539 The weighted average remaining lease term and weighted average discount rate as of December 26, 2020 and December 28, 2019 are as follows: 2020 2019 Weighted average remaining lease term: Operating leases 12 years 12 years Finance leases 19 years 18 years Weighted average discount rate: Operating leases 3.4 % 3.5 % Finance leases 3.3 % 3.9 %
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Year Operating Leases Finance Leases (Amounts are in thousands) 2021 $ 438,358 32,962 2022 414,464 18,163 2023 372,632 32,879 2024 326,523 17,194 2025 275,623 17,194 Thereafter 1,797,109 233,575 3,624,709 351,967 Less: Imputed interest (690,646) (80,302) $ 2,934,063 271,665
Finance Lease, Liability, Maturity [Table Text Block]	Year Operating Leases Finance Leases (Amounts are in thousands) 2021 $ 438,358 32,962 2022 414,464 18,163 2023 372,632 32,879 2024 326,523 17,194 2025 275,623 17,194 Thereafter 1,797,109 233,575 3,624,709 351,967 Less: Imputed interest (690,646) (80,302) $ 2,934,063 271,665
Schedule of Rent Expense [Table Text Block]	Total rental expense for 2018 was as follows: 2018 (Amounts are in thousands) Minimum rentals $ 449,138 Contingent rentals 133,382 Sublease rental income (4,339) $ 578,181

Lessor, Operating Leases (Table

Lessor, Operating Leases (Tables)	12 Months Ended
	Dec. 26, 2020
Lessor Disclosure [Abstract]
Operating Lease, Lease Income [Table Text Block]	Total lease income for 2020 and 2019 was as follows: 2020 2019 (Amounts are in thousands) Lease income $ 133,512 149,313 Variable lease income 38,797 41,472 $ 172,309 190,785
Lessor, Operating Lease, Payments to be Received, Maturity [Table Text Block]	Future fixed lease payments for all noncancelable operating leases as of December 26, 2020 are as follows: Year (Amounts are in thousands) 2021 $ 149,716 2022 122,580 2023 97,354 2024 69,995 2025 44,908 Thereafter 159,256 $ 643,809

Aggregate Maturities of Long-Te

Aggregate Maturities of Long-Term Debt (Tables)	12 Months Ended
	Dec. 26, 2020
Maturities of Long-term Debt [Abstract]
Aggregate Annual Maturities and Scheduled Payments of Long-Term Debt [Table Text Block]	As of December 26, 2020, the aggregate annual maturities and scheduled payments of long-term debt are as follows: Year (Amounts are in thousands) 2021 $ 36,392 2022 25,238 2023 38,694 2024 32,165 2025 400 Thereafter 27,338 $ 160,227

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 26, 2020
Income Tax Disclosure [Abstract]
Schedule Of Allocation Of Income Taxes [Table Text Block]	Total income taxes for 2020, 2019 and 2018 were allocated as follows: 2020 2019 2018 (Amounts are in thousands) Earnings $ 1,064,817 780,591 539,801 Other comprehensive earnings (losses) 40,682 46,723 (3,440) $ 1,105,499 827,314 536,361
Provision for Income Taxes [Table Text Block]	The provision for income taxes consists of the following: Current Deferred Total (Amounts are in thousands) 2020 Federal $ 871,187 56,382 927,569 State 144,074 (6,826) 137,248 $ 1,015,261 49,556 1,064,817 2019 Federal $ 504,047 171,422 675,469 State 61,540 43,582 105,122 $ 565,587 215,004 780,591 2018 Federal $ 413,735 59,377 473,112 State 62,821 3,868 66,689 $ 476,556 63,245 539,801
Reconciliation of Provision for Income Taxes at Federal Statutory Tax Rate to Earnings Before Income Taxes [Table Text Block]	A reconciliation of the provision for income taxes at the federal statutory income tax rate of 21% to earnings before income taxes compared to the Company’s actual income tax expense is as follows: 2020 2019 2018 (Amounts are in thousands) Federal tax at statutory income tax rate $ 1,057,698 795,057 613,403 State income taxes (net of federal tax benefit) 108,426 83,046 52,684 ESOP dividend (47,449) (45,493) (41,175) Other, net (53,858) (52,019) (85,111) $ 1,064,817 780,591 539,801
Tax Effects of Temporary Differences That Give Rise to Deferred Income Taxes [Table Text Bock]	The tax effects of temporary differences that give rise to significant portions of deferred income taxes as of December 26, 2020 and December 28, 2019 are as follows: 2020 2019 (Amounts are in thousands) Deferred tax liabilities and (assets): Lease assets $ 789,369 770,182 Property, plant and equipment 719,212 671,864 Investments 337,147 176,744 Inventories 30,906 30,398 Lease liabilities (815,024) (781,250) Self-insurance reserves (84,509) (80,655) Payroll tax deferral (75,770) — Retirement plan contributions (48,390) (46,196) Postretirement benefit cost (35,031) (32,064) Vendor rebates (18,517) (15,299) Other (26,671) (11,240) $ 772,722 682,484

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Earnings (Losses) (Tables)	12 Months Ended
	Dec. 26, 2020
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Earnings (Losses) [Table Text Block]	Investments Postretirement Benefit Accumulated Other Comprehensive Earnings (Losses) (Amounts are in thousands) Balances at December 30, 2017 $ 168,057 (15,421) 152,636 Unrealized loss on debt securities (19,126) — (19,126) Net realized loss on debt securities reclassified to investment income 346 — 346 Adjustment to postretirement benefit obligation — 8,692 8,692 Net other comprehensive (losses) earnings (18,780) 8,692 (10,088) Cumulative effect of net unrealized gain on equity securities reclassified to retained earnings (198,310) — (198,310) Balances at December 29, 2018 (49,033) (6,729) (55,762) Unrealized gain on debt securities 148,141 — 148,141 Net realized gain on debt securities reclassified to investment income (602) — (602) Adjustment to postretirement benefit obligation — (10,488) (10,488) Net other comprehensive earnings (losses) 147,539 (10,488) 137,051 Balances at December 28, 2019 98,506 (17,217) 81,289 Unrealized gain on debt securities 138,989 — 138,989 Net realized gain on debt securities reclassified to investment income (13,591) — (13,591) Adjustment to postretirement benefit obligation — (5,736) (5,736) Net other comprehensive earnings (losses) 125,398 (5,736) 119,662 Balances at December 26, 2020 $ 223,904 (22,953) 200,951

Quarterly Information (unaudi_2

Quarterly Information (unaudited) (Tables)	12 Months Ended
	Dec. 26, 2020
Quarterly Financial Information Disclosure [Abstract]
Quarterly Results of Operations [Table Text Block]	Following is a summary of the quarterly results of operations for 2020 and 2019. All quarters have 13 weeks. First Second Third Fourth (Amounts are in thousands, except per share amounts) 2020 Revenues $ 11,306,951 11,468,563 11,136,409 11,292,036 Costs and expenses 10,155,340 10,391,518 10,260,086 10,385,042 Net earnings 667,335 1,367,055 917,584 1,019,864 Earnings per share 0.94 1.94 1.31 1.47 2019 Revenues $ 9,760,110 9,446,916 9,417,933 9,837,794 Costs and expenses 8,903,535 8,767,478 8,805,903 9,096,588 Net earnings 980,971 661,057 574,026 789,341 Earnings per share 1.37 0.92 0.81 1.11
Quarterly Results of Operations Excluding Unrealized Gains and Losses [Table Text Block]	Following is a summary of the quarterly net earnings and earnings per share excluding the impact of net unrealized gains and losses on equity securities for 2020 and 2019. First Second Third Fourth (Amounts are in thousands, except per share amounts) 2020 Net earnings $ 956,200 978,300 836,200 918,500 Earnings per share 1.35 1.39 1.20 1.32 2019 Net earnings $ 741,700 637,000 580,300 656,600 Earnings per share 1.04 0.89 0.81 0.93

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts Schedule II - Valuation and Qualifying Accounts (Tables)	12 Months Ended
	Dec. 26, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II Valuation of Qualifying Accounts [Table Text Block]	Balance at Year Additions Income Deductions Reserves Balance at Year (Amounts are in thousands) 2020 Reserves not deducted from assets: Self-insurance reserves: Current $ 149,082 396,185 384,044 161,223 Noncurrent 226,727 9,131 — 235,858 $ 375,809 405,316 384,044 397,081 2019 Reserves not deducted from assets: Self-insurance reserves: Current $ 145,241 398,336 394,495 149,082 Noncurrent 222,419 4,308 — 226,727 $ 367,660 402,644 394,495 375,809 2018 Reserves not deducted from assets: Self-insurance reserves: Current $ 137,100 403,598 395,457 145,241 Noncurrent 218,598 3,821 — 222,419 $ 355,698 407,419 395,457 367,660

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 26, 2020USD ($)Age	Dec. 28, 2019USD ($)	Dec. 29, 2018USD ($)
Summary Of Significant Accounting Policies [Line Items]
Percent of cost for inventories determined using LIFO	84.00%	85.00%
Excess of Replacement or Current Costs over Stated LIFO Value | $	$ 548,749,000	$ 528,997,000
Postretirement Benefits Number of Years of Full Time Service for Eligibility	5 years
Age Plus Years of Credited Service Required to Qualify for Post Retirement Benefits | Age	65
Minimum Retirement Age For Eligible Employees Of Postretirement Plans | Age	55
Minimum Years of Full Time Service for Eligible Employees of Postretirement Plans	10 years
Accumulation of Losses Exceeds Benefit Obligation	10.00%
Percent Revenue from other products and Services	15.00%	16.00%	16.00%
Percent Revenue from Grocery Sales	85.00%	84.00%	84.00%
Advertising costs | $	$ 244,839,000	$ 245,403,000	$ 249,123,000
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Lessee, Lease, Term of Contract	20 years
Lessee Leases, Renewal Term	5 years

Investments Recently Issues Acc

Investments Recently Issues Accounting Standard (Details)	12 Months Ended
	Dec. 26, 2020
Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect	did not have a material effect

Assets Recorded at Cost and Dep

Assets Recorded at Cost and Depreciated Using Straight-Line Method Over Estimated Useful Lives or Terms of Related Leases, If Shorter (Detail)	12 Months Ended
	Dec. 26, 2020
Buildings and improvements | Minimum [Member]
Property Plant and Equipment Estimated Useful Lives [Line Items]
Estimated useful life, years	10 years
Buildings and improvements | Maximum [Member]
Property Plant and Equipment Estimated Useful Lives [Line Items]
Estimated useful life, years	40 years
Furniture and Fixtures [Member] | Minimum [Member]
Property Plant and Equipment Estimated Useful Lives [Line Items]
Estimated useful life, years	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property Plant and Equipment Estimated Useful Lives [Line Items]
Estimated useful life, years	20 years
Leasehold improvements | Minimum [Member]
Property Plant and Equipment Estimated Useful Lives [Line Items]
Estimated useful life, years	10 years
Leasehold improvements | Maximum [Member]
Property Plant and Equipment Estimated Useful Lives [Line Items]
Estimated useful life, years	20 years

Summary of Fair Value Measureme

Summary of Fair Value Measurements for Available for Sale Securities (Detail) - USD ($) $ in Thousands	Dec. 26, 2020	Dec. 28, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 11,288,199	$ 8,426,385
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	1,465,987	2,028,547
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	9,822,212	6,397,838
Level 3
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 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 8,898,168	$ 5,939,950
Unrealized Gain	308,536	133,662
Unrealized Loss	8,412	1,573
Fair Value	9,198,292	6,072,039
Tax exempt bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	548,438	767,931
Unrealized Gain	7,408	3,429
Unrealized Loss	88	130
Fair Value	555,758	771,230
Taxable Bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	8,182,003	5,002,036
Unrealized Gain	286,745	120,132
Unrealized Loss	8,324	1,443
Fair Value	8,460,424	5,120,725
Restricted Investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	167,727	169,983
Unrealized Gain	14,383	10,101
Unrealized Loss	0	0
Fair Value	$ 182,110	$ 180,084

Amortized Cost and Fair Value o

Amortized Cost and Fair Value of Available for Sale Debt Securities by Expected Maturity (Details) - USD ($) $ in Thousands	Dec. 26, 2020	Dec. 28, 2019
Cost
Due in one year or less	$ 677,453	$ 437,236
Due after one year through five years	5,330,696	3,836,333
Due after five years through ten years	2,886,333	1,661,143
Due after ten years	3,686	5,238
Amortized Cost	8,898,168	5,939,950
Fair Value
Due in one year or less	682,965	438,105
Due after one year through five years	5,533,074	3,900,904
Due after five years through ten years	2,978,301	1,727,594
Due after ten years	3,952	5,436
Available-for-sale Securities, Debt Maturities, Fair Value	$ 9,198,292	$ 6,072,039

Temporarily Impaired Available

Temporarily Impaired Available for Sale Debt Securities by Time Period Impaired (Details) - USD ($) $ in Thousands	Dec. 26, 2020	Dec. 28, 2019
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months	$ 1,161,091	$ 621,777
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	8,034	899
Continuous Unrealized Loss Position, 12 Months or Longer	39,622	297,617
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	378	674
Debt Securities, Unrealized Loss Position	1,200,713	919,394
Debt Securities, Unrealized Loss Position, Accumulated Loss	8,412	1,573
Tax exempt bonds
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months	3,704	48,462
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	88	11
Continuous Unrealized Loss Position, 12 Months or Longer	0	99,976
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	119
Debt Securities, Unrealized Loss Position	3,704	148,438
Debt Securities, Unrealized Loss Position, Accumulated Loss	88	130
Taxable Bonds
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Loss Position, Less than 12 Months	1,157,387	573,315
Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	7,946	888
Continuous Unrealized Loss Position, 12 Months or Longer	39,622	197,641
Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	378	555
Debt Securities, Unrealized Loss Position	1,197,009	770,956
Debt Securities, Unrealized Loss Position, Accumulated Loss	$ 8,324	$ 1,443

Investments Investments Allowan

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

Investments - Additional Inform

Investments - Additional Information (Details) $ in Thousands	Dec. 26, 2020USD ($)Securities	Dec. 28, 2019USD ($)
Debt Securities, Available-for-sale [Line Items]
Number of AFS securities issues contributing to total unrealized loss | Securities	51
Total, Unrealized Losses | $	$ 8,412	$ 1,573

Investments Investments Equity

Investments Investments Equity Securities (Details) - USD ($)	Dec. 26, 2020	Dec. 28, 2019
Debt Securities, Trading, and Equity Securities, FV-NI [Abstract]
Equity Securities	$ 2,089,907,000	$ 2,354,346,000

Investments Investment Income (

Investments Investment Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Investment Income Debt and Equity Securities [Abstract]
Interest and dividend income	$ 199,435	$ 186,748	$ 129,953
Net realized gain on investments	396,584	104,905	109,547
Investment Income Before Fair Value Adjustment	596,019	291,653	239,500
Fair value adjustment, due to net unrealized gain (loss), on equity securities held at end of year	554,547	472,490	(107,466)
Net (gain) loss on sale of equity securities previously recognized through fair value adjustment	(175,560)	50,229	(75,335)
Investment Income	$ 975,006	$ 814,372	$ 56,699

Lessee, Leases Finance Lease Ri

Lessee, Leases Finance Lease Right of Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 26, 2020	Dec. 28, 2019
Assets and Liabilities, Lessee [Abstract]
Finance Lease, Right-of-Use Asset	$ 291,556	$ 154,217
Finance Lease, Liability, Current	25,254	29,480
Finance Lease, Liability, Noncurrent	$ 246,411	$ 104,806

Lessee, Leases Lease Cost ASC 8

Lessee, Leases Lease Cost ASC 842 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Lease, Cost [Abstract]
Operating lease expense	$ 443,063	$ 434,555
Finance Lease, Right-of-Use Asset, Amortization	9,850	8,128
Finance Lease, Interest Expense	4,651	3,105
Variable lease expense	159,236	147,463
Sublease rental income	(2,819)	(2,874)
Lease, Cost	613,981	590,377
Leases, Supplemental Cash Flow Information [Abstract]
Operating cash flows from rent paid for operating lease liabilities	436,988	422,596
Right-of-use assets obtained in exchange for new operating lease liabilities	364,757	463,727
Right-of-use assets obtained in exchange for new finance lease liabilities	$ 174,307	$ 65,539
Weighted Average Remaining Lease Term/Discount Rate [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	12 years	12 years
Finance Lease, Weighted Average Remaining Lease Term	19 years	18 years
Operating Lease, Weighted Average Discount Rate, Percent	3.40%	3.50%
Finance Lease, Weighted Average Discount Rate, Percent	3.30%	3.90%

Lessee, Leases Maturities of Op

Lessee, Leases Maturities of Operating Lease Liabilities (Details) $ in Thousands	Dec. 26, 2020USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2021	$ 438,358
2022	414,464
2023	372,632
2024	326,523
2025	275,623
Thereafter	1,797,109
Total Payments Due	3,624,709
Less: Imputed Interest	(690,646)
Operating Lease Liability	$ 2,934,063

Lessee, Leases Maturities of Fi

Lessee, Leases Maturities of Finance Lease Liabilities (Details) $ in Thousands	Dec. 26, 2020USD ($)
Finance Lease, Liability, Payment, Due [Abstract]
2021	$ 32,962
2022	18,163
2023	32,879
2024	17,194
2025	17,194
Thereafter	233,575
Total Payments Due	351,967
Less: Imputed Interest	(80,302)
Finance Lease Liability	$ 271,665

Lessee, Leases, Not Yet Commenc

Lessee, Leases, Not Yet Commenced (Details)	12 Months Ended
	Dec. 26, 2020USD ($)
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract	20 years
Operating Lease, Lease Not Yet Commenced, Expense	$ 359,498,000

Lessee, Leases Rental Expense A

Lessee, Leases Rental Expense ASC 840 (Details) $ in Thousands	12 Months Ended
	Dec. 29, 2018USD ($)
Operating Leases, Rental Expense ASC 840 [Abstract]
Minimum rentals	$ 449,138
Contingent rentals	133,382
Sublease rental income	(4,339)
Operating Leases Rent Expense, Net	$ 578,181

Lessor, Operating Leases, Lease

Lessor, Operating Leases, Lease Income ASC 842 (Details) - USD ($)	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Operating Lease, Lease Income [Abstract]
Operating Lease, Lease Income	$ 172,309,000	$ 190,785,000

Lessor, Operating Leases, Lea_2

Lessor, Operating Leases, Lease Income ASC 840 (Details)	12 Months Ended
	Dec. 29, 2018USD ($)
Operating Lease, Lease Income [Abstract]
Operating Leases, Income Statement, Lease Revenue	$ 183,963,000

Lessor, Operating Leases, Lea_3

Lessor, Operating Leases, Lease Income ASC 842 (Details) - USD ($)	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Operating Lease, Lease Income [Abstract]
Lease Income	$ 133,512,000	$ 149,313,000
Variable Lease Income	38,797,000	41,472,000
Operating Lease Income	$ 172,309,000	$ 190,785,000

Lessor, Fixed Lease Payments to

Lessor, Fixed Lease Payments to be Received (Details) $ in Thousands	Dec. 26, 2020USD ($)
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]
2021	$ 149,716
2022	122,580
2023	97,354
2024	69,995
2025	44,908
Thereafter	159,256
Total	$ 643,809

Consolidation of Joint Ventur_2

Consolidation of Joint Ventures and Long-Term Debt Joint Ventures - Additional Information (Details) - USD ($)	Dec. 26, 2020	Dec. 28, 2019
Variable Interest Entity [Line Items]
Assets	$ 28,094,077,000	$ 24,507,120,000
Liabilities	8,808,213,000	7,605,776,000
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Assets	199,230,000	154,659,000
Liabilities	$ 77,565,000	$ 78,472,000

Consolidation of Joint Ventur_3

Consolidation of Joint Ventures and Long-Term Debt Long Term Debt Assumptions, Maturities and Interest Rates (Details) - USD ($)	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Debt Instrument [Line Items]
Loans Assumed	$ 0	$ 0
JV Loans [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.75%
Debt Instrument Maturity Month And Year	January 2021
JV Loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.50%
Debt Instrument Maturity Month And Year	April 2027
Shopping Center Loans [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.70%
Debt Instrument Maturity Month And Year	April 2021
Shopping Center Loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.50%
Debt Instrument Maturity Month And Year	January 2027

Aggregate Annual Maturities and

Aggregate Annual Maturities and Scheduled Payments of Long-Term Debt (Detail) $ in Thousands	Dec. 26, 2020USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]
2021	$ 36,392
2022	25,238
2023	38,694
2024	32,165
2025	400
Thereafter	27,338
Long-term Debt, Total	$ 160,227

Retirement Plans - Additional I

Retirement Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Retirement Benefits [Abstract]
Compensation expense (ESOP)	$ 417,800,000	$ 370,778,000	$ 337,712,000
Distributed shares subject to put option, fair value	444,801,000	287,328,000
ESOP, shares cost	3,039,748,000	2,971,902,000
Common stock related to ESOP	3,484,549,000	3,259,230,000
ESOP shares, fair value	$ 9,976,034,000	$ 8,585,189,000
Maximum contribution percentage of employees' eligible annual compensation	30.00%
Percentage of company match approved for eligible contributions	50.00%	50.00%	50.00%
Percentage of eligible wages for matching contributions	3.00%	3.00%	3.00%
Maximum amount match per employee	$ 750	$ 750	$ 750
Compensation Expense (401(k))	$ 39,858,000	$ 38,112,000	$ 34,980,000

Total Income Taxes (Detail)

Total Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Income Tax Disclosure [Abstract]
Earnings	$ 1,064,817	$ 780,591	$ 539,801
Other comprehensive earnings (losses)	40,682	46,723	(3,440)
Income tax expense	$ 1,105,499	$ 827,314	$ 536,361

Provision for Income Taxes (Det

Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Current
Federal	$ 871,187	$ 504,047	$ 413,735
State	144,074	61,540	62,821
Current income tax expense	1,015,261	565,587	476,556
Deferred
Federal	56,382	171,422	59,377
State	(6,826)	43,582	3,868
Deferred income taxes	49,556	215,004	63,245
Federal	927,569	675,469	473,112
State	137,248	105,122	66,689
Income tax expense	$ 1,064,817	$ 780,591	$ 539,801

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Income Tax Disclosure [Abstract]
Federal statutory tax rate	21.00%	21.00%	21.00%
Deferred Tax Assets, Valuation Allowance	$ 0	$ 0
Unrecognized tax benefits	$ 0	$ 0

Reconciliation of Provision for

Reconciliation of Provision for Income Taxes at Federal Statutory Tax Rate to Earnings Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Income Tax Disclosure [Abstract]
Federal tax at statutory income tax rate	$ 1,057,698	$ 795,057	$ 613,403
State income taxes (net of federal tax benefit)	108,426	83,046	52,684
ESOP dividend	(47,449)	(45,493)	(41,175)
Other, net	(53,858)	(52,019)	(85,111)
Income tax expense	$ 1,064,817	$ 780,591	$ 539,801

Tax Effect of Temporary Differe

Tax Effect of Temporary Differences That Give Rise to Deferred Income Taxes (Detail) - USD ($) $ in Thousands	Dec. 26, 2020	Dec. 28, 2019
Deferred tax liabilities and (assets):
Lease assets	$ 789,369	$ 770,182
Property, plant and equipment	719,212	671,864
Investments	337,147	176,744
Inventories	30,906	30,398
Lease liabilities	(815,024)	(781,250)
Self-insurance reserves	(84,509)	(80,655)
Payroll tax deferral	(75,770)	0
Retirement plan contributions	(48,390)	(46,196)
Postretirement benefit cost	(35,031)	(32,064)
Vendor rebates	(18,517)	(15,299)
Other	(26,671)	(11,240)
Deferred Tax Liabilities, Net	$ 772,722	$ 682,484

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Earnings (Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Accumulated Other Comprehensive Earnings (Losses), Net of Tax [Roll Forward]
Balances at beginning of period	$ 81,289	$ (55,762)	$ 152,636
Unrealized gain (loss) on debt securities	138,989	148,141	(19,126)
Net realized (gain) loss on debt securities reclassified to investment income	(13,591)	(602)	346
Adjustment to postretirement benefit obligation	(5,736)	(10,488)	8,692
Net other comprehensive earnings (losses)	119,662	137,051	(10,088)
Cumulative Effect Reclassification , Accounting Standards Update	0	0	(198,310)
Balances at end of period	200,951	81,289	(55,762)
Investments
Accumulated Other Comprehensive Earnings (Losses), Net of Tax [Roll Forward]
Balances at beginning of period	98,506	(49,033)	168,057
Unrealized gain (loss) on debt securities	138,989	148,141	(19,126)
Net realized (gain) loss on debt securities reclassified to investment income	(13,591)	(602)	346
Net other comprehensive earnings (losses)	125,398	147,539	(18,780)
Cumulative Effect Reclassification , Accounting Standards Update	0	0	(198,310)
Balances at end of period	223,904	98,506	(49,033)
Postretirement Benefit
Accumulated Other Comprehensive Earnings (Losses), Net of Tax [Roll Forward]
Balances at beginning of period	(17,217)	(6,729)	(15,421)
Adjustment to postretirement benefit obligation	(5,736)	(10,488)	8,692
Net other comprehensive earnings (losses)	(5,736)	(10,488)	8,692
Balances at end of period	$ (22,953)	$ (17,217)	$ (6,729)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Earnings Change in Accounting Principle (Details) - USD ($)	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect Reclassification , Accounting Standards Update	$ 0	$ 0	$ (198,310,000)
Accounting Standards Update 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect Reclassification , Accounting Standards Update			$ 198,310,000

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details)	Dec. 26, 2020USD ($)
Trade Letter of Credit
Commitments and Contingencies [Line Items]
Letter of credit to support purchase obligation	$ 9,118,000
Standby Letters of Credit
Commitments and Contingencies [Line Items]
Letter of credit to support purchase obligation	$ 3,709,000

Subsequent Event (Details)

Subsequent Event (Details) - Subsequent Event [Member] - USD ($)	Feb. 01, 2021	Jan. 15, 2021	Jan. 04, 2021
Subsequent Event [Line Items]
Dividends Payable, Date Declared			Jan. 4, 2021
Common Stock, Dividends, Per Share, Declared			$ 0.32
Dividends, Common Stock, Cash			$ 221,000,000
Dividends Payable, Date to be Paid	Feb. 1, 2021
Dividends Payable, Date of Record		Jan. 15, 2021

Quarterly Information (unaudi_3

Quarterly Information (unaudited) Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 26, 2020	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Revenues	$ 11,292,036	$ 11,136,409	$ 11,468,563	$ 11,306,951	$ 9,837,794	$ 9,417,933	$ 9,446,916	$ 9,760,110	$ 45,203,959	$ 38,462,753	$ 36,395,718
Costs and Expenses	10,385,042	10,260,086	10,391,518	10,155,340	9,096,588	8,805,903	8,767,478	8,903,535	41,191,986	35,573,504	33,651,315
Net earnings	$ 1,019,864	$ 917,584	$ 1,367,055	$ 667,335	$ 789,341	$ 574,026	$ 661,057	$ 980,971	$ 3,971,838	$ 3,005,395	$ 2,381,167
Earnings per share	$ 1.47	$ 1.31	$ 1.94	$ 0.94	$ 1.11	$ 0.81	$ 0.92	$ 1.37	$ 5.67	$ 4.21	$ 3.28

Impact of the Tax Act and the A

Impact of the Tax Act and the ASU (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 26, 2020	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019
Net Earnings Excluding Unrealized Gain (Loss) [Abstract]
Net Earnings Excluding Unrealized Gain (Loss)	$ 918,500	$ 836,200	$ 978,300	$ 956,200	$ 656,600	$ 580,300	$ 637,000	$ 741,700
Earnings Per Share Excluding Unrealized Gain (Loss)	$ 1.32	$ 1.20	$ 1.39	$ 1.35	$ 0.93	$ 0.81	$ 0.89	$ 1.04

Valuation and Qualifying Accoun

Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 375,809	$ 367,660	$ 355,698
Additions Charged to Income	405,316	402,644	407,419
Deductions From Reserves	384,044	394,495	395,457
Balance at End of Year	397,081	375,809	367,660
Self-Insurance Reserves, Current
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	149,082	145,241	137,100
Additions Charged to Income	396,185	398,336	403,598
Deductions From Reserves	384,044	394,495	395,457
Balance at End of Year	161,223	149,082	145,241
Self-Insurance Reserves, Noncurrent
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	226,727	222,419	218,598
Additions Charged to Income	9,131	4,308	3,821
Deductions From Reserves	0	0	0
Balance at End of Year	$ 235,858	$ 226,727	$ 222,419