Conagra Brands (CAG) 10-K 20 Jul 18 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	May 27, 2018	Jun. 24, 2018	Nov. 26, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	CONAGRA BRANDS INC.
Entity Central Index Key	23,217
Current Fiscal Year End Date	--05-27
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	May 27, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Trading Symbol	CAG
Amendment Flag	false
Entity Common Stock, Shares Outstanding		390,888,172
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 14,207,433,670

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Income Statement [Abstract]
Net sales	$ 7,938.3	$ 7,826.9	$ 8,664.1
Costs and expenses:
Cost of goods sold	5,586.8	5,484.8	6,234.9
Selling, general and administrative expenses	1,318	1,417.1	2,024.6
Interest expense, net	158.7	195.5	295.8
Income from continuing operations before income taxes and equity method investment earnings	874.8	729.5	108.8
Income tax expense	174.6	254.7	46.4
Equity method investment earnings	97.3	71.2	66.1
Income from continuing operations	797.5	546	128.5
Income (loss) from discontinued operations, net of tax	14.3	102	(794.4)
Net income (loss)	811.8	648	(665.9)
Less: Net income attributable to noncontrolling interests	3.4	8.7	11.1
Net income (loss) attributable to Conagra Brands, Inc.	$ 808.4	$ 639.3	$ (677)
Earnings (loss) per share — basic
Income from continuing operations attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	$ 1.97	$ 1.26	$ 0.29
Income (loss) from discontinued operations attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	0.03	0.22	(1.86)
Net income (loss) attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	2	1.48	(1.57)
Earnings (loss) per share — diluted
Income from continuing operations attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	1.95	1.25	0.29
Income (loss) from discontinued operations attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	0.03	0.21	(1.85)
Net income (loss) attributable to Conagra Brands, Inc. common stockholders (in dollars per share)	$ 1.98	$ 1.46	$ (1.56)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Net income (loss)
Pre-Tax Amount	$ 972.3	$ 989.2	$ (1,033.6)
Tax (Expense) Benefit	(160.5)	(341.2)	367.7
Net income (loss)	811.8	648	(665.9)
Unrealized derivative adjustments
Pre-Tax Amount	2.9	(1)	0
Tax (Expense) Benefit	(0.9)	0.4	0
After-Tax Amount	2	(0.6)	0
Reclassification for derivative adjustments included in net income
Pre-Tax Amount	0.1	(0.2)	(2.1)
Tax (Expense) Benefit	0	0.1	0.8
After-Tax Amount	0.1	(0.1)	(1.3)
Unrealized gains on available-for-sale securities
Pre-Tax Amount	1.1	0.5	0.1
Tax (Expense) Benefit	(0.3)	(0.2)	0
After-Tax Amount	0.8	0.3	0.1
Unrealized currency translation gains (losses)
Pre-Tax Amount	0.8	(13.6)	(58.9)
Tax (Expense) Benefit	(0.1)	0.2	0
After-Tax Amount	0.7	(13.4)	(58.9)
Reclassification for currency translation losses included in net income
Pre-Tax Amount	0	0	73.4
Tax (Expense) Benefit	0	0	0
After-Tax Amount	0	0	73.4
Unrealized pension and post-employment benefit obligations
Pre-Tax Amount	157.3	209.2	(37.7)
Tax (Expense) Benefit	(45)	(80.6)	14.8
After-Tax Amount	112.3	128.6	(22.9)
Reclassification for pension and post-employment benefit obligations included in net income
Pre-Tax Amount	0.9	10.4	(14.5)
Tax (Expense) Benefit	(0.2)	(4)	4.9
After-Tax Amount	0.7	6.4	(9.6)
Comprehensive income (loss)
Pre-Tax Amount	1,135.4	1,194.5	(1,073.3)
Tax (Expense) Benefit	(207)	(425.3)	388.2
After-Tax Amount	928.4	769.2	(685.1)
Comprehensive income attributable to noncontrolling interests
Pre-Tax Amount	0.7	12.6	7.8
Tax (Expense) Benefit	(1.2)	(0.7)	(0.9)
After-Tax Amount	(0.5)	11.9	6.9
Comprehensive income (loss) attributable to Conagra Brands, Inc.
Pre-Tax Amount	1,134.7	1,181.9	(1,081.1)
Tax (Expense) Benefit	(205.8)	(424.6)	389.1
After-Tax Amount	$ 928.9	$ 757.3	$ (692)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Current assets
Cash and cash equivalents	$ 128	$ 251.4
Receivables, less allowance for doubtful accounts of $2.0 and $3.1	582.6	563.4
Inventories	997.1	927.9
Prepaid expenses and other current assets	186.8	228.7
Total current assets	1,938.9	2,013.2
Property, plant and equipment
Land and land improvements	108.6	103.2
Buildings, machinery and equipment	3,238.8	3,140.9
Furniture, fixtures, office equipment and other	628.9	724.2
Construction in progress	85.9	124.9
Property, plant and equipment	4,062.2	4,093.2
Less accumulated depreciation	(2,442.1)	(2,460.1)
Property, plant and equipment, net	1,620.1	1,633.1
Goodwill	4,502.5	4,295.3
Brands, trademarks and other intangibles, net	1,284.5	1,223.7
Other assets	906.3	790.6
Total assets	10,389.5	10,096.3
Current liabilities
Notes payable	277.3	28.2
Current installments of long-term debt	307	199
Accounts payable	915.1	773.1
Accrued payroll	163.9	167.6
Other accrued liabilities	672.9	552.6
Total current liabilities	2,336.2	1,720.5
Senior long-term debt, excluding current installments	3,035.6	2,573.3
Subordinated debt	195.9	195.9
Other noncurrent liabilities	1,065.2	1,528.8
Total liabilities	6,632.9	6,018.5
Commitments and contingencies (Note 17)
Common stockholders' equity
Common stock of $5 par value, authorized 1,200,000,000 shares; issued 567,907,172	2,839.7	2,839.7
Additional paid-in capital	1,180	1,171.9
Retained earnings	4,744.9	4,247
Accumulated other comprehensive loss	(110.5)	(212.9)
Less treasury stock, at cost, 177,078,193 and 151,387,209 common shares	(4,977.9)	(4,054.9)
Total Conagra Brands, Inc. common stockholders' equity	3,676.2	3,990.8
Noncontrolling interests	80.4	87
Total stockholders' equity	3,756.6	4,077.8
Total liabilities and stockholders' equity	10,389.5	10,096.3
Held for sale
Current assets
Current assets	44.4	41.8
Property, plant and equipment
Noncurrent assets held for sale	$ 137.2	$ 140.4

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 2	$ 3.1
Common stock, par value (in dollars per share)	$ 5	$ 5
Common stock authorized (shares)	1,200,000,000	1,200,000,000
Common stock issued (shares)	567,907,172	567,907,172
Treasury stock, common shares (shares)	177,078,193	151,387,209

Consolidated Statements of Comm

Consolidated Statements of Common Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interests
Beginning balance (in shares) at May. 31, 2015		567.9
Beginning balance at May. 31, 2015	$ 4,610	$ 2,839.7	$ 1,049.4	$ 4,331.1	$ (329.5)	$ (3,364.7)	$ 84
Increase (Decrease) in Stockholders' Equity
Stock option and incentive plans	319		91.7	(1.2)		228.5
Currency translation adjustment, net	14.5				18.7		(4.2)
Unrealized gain on securities	0.1				0.1
Derivative adjustment, net of reclassification adjustment	(1.3)				(1.3)
Activities of noncontrolling interests	(3.4)		(4.8)				1.4
Pension and postretirement healthcare benefits	(32.5)				(32.5)
Dividends declared on common stock	(434.6)			(434.6)
Net (loss) income attributable to Conagra Brands, Inc.	(677)			(677)
Ending balance (in shares) at May. 29, 2016		567.9
Ending balance at May. 29, 2016	3,794.8	$ 2,839.7	1,136.3	3,218.3	(344.5)	(3,136.2)	81.2
Increase (Decrease) in Stockholders' Equity
Adoption of ASU	(3.9)			(3.9)
Stock option and incentive plans	116.4		36.4	(1.3)		81.3
Spinoff of Lamb Weston	796.9			783.3	13.6
Currency translation adjustment, net	(13.4)				(16.6)		3.2
Repurchase of common shares	(1,000)					(1,000)
Unrealized gain on securities	0.3				0.3
Derivative adjustment, net of reclassification adjustment	(0.7)				(0.7)
Activities of noncontrolling interests	1.8		(0.8)				2.6
Pension and postretirement healthcare benefits	135				135
Dividends declared on common stock	(388.7)			(388.7)
Net (loss) income attributable to Conagra Brands, Inc.	639.3			639.3
Ending balance (in shares) at May. 28, 2017		567.9
Ending balance at May. 28, 2017	4,077.8	$ 2,839.7	1,171.9	4,247	(212.9)	(4,054.9)	87
Increase (Decrease) in Stockholders' Equity
Adoption of ASU	0			17.4	(17.4)
Stock option and incentive plans	53.7		10	(0.8)		44.3	0.2
Spinoff of Lamb Weston	14.8			14.8
Currency translation adjustment, net	0.7				4.6		(3.9)
Repurchase of common shares	(967.3)					(967.3)
Unrealized gain on securities	0.8				0.8
Derivative adjustment, net of reclassification adjustment	2.1				2.1
Activities of noncontrolling interests	(5.5)		(1.9)		(0.7)		(2.9)
Pension and postretirement healthcare benefits	113				113
Dividends declared on common stock	(341.9)			(341.9)
Net (loss) income attributable to Conagra Brands, Inc.	808.4			808.4
Ending balance (in shares) at May. 27, 2018		567.9
Ending balance at May. 27, 2018	$ 3,756.6	$ 2,839.7	$ 1,180	$ 4,744.9	$ (110.5)	$ (4,977.9)	$ 80.4

Consolidated Statements of Com7

Consolidated Statements of Common Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended								12 Months Ended
	May 27, 2018	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	May 28, 2017	Feb. 26, 2017	Nov. 27, 2016	Aug. 28, 2016	May 27, 2018	May 28, 2017	May 29, 2016
Statement of Stockholders' Equity [Abstract]
Dividends declared on common stock (in dollars per share)	$ 0.2125	$ 0.2125	$ 0.2125	$ 0.2125	$ 0.20	$ 0.2	$ 0.25	$ 0.25	$ 0.85	$ 0.90	$ 1

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Cash flows from operating activities:
Net income (loss)	$ 811.8	$ 648	$ (665.9)
Income (loss) from discontinued operations	14.3	102	(794.4)
Income from continuing operations	797.5	546	128.5
Adjustments to reconcile income from continuing operations to net cash flows from operating activities:
Depreciation and amortization	257	268	278.5
Asset impairment charges	14.7	343.3	62.6
Gain on divestitures	0	(197.4)	0
Lease cancellation expense	48.2	0	55.6
Loss on extinguishment of debt	0	93.3	23.9
Significant litigation accruals	151	0	0
Earnings of affiliates in excess of distributions	(34.8)	(3)	(25.7)
Stock-settled share-based payments expense	37.9	36.1	41.8
Contributions to pension plans	(312.6)	(163)	(11.5)
Pension expense (benefit)	(56.1)	(21.4)	358.1
Other items	(34)	39.9	53.6
Change in operating assets and liabilities excluding effects of business acquisitions and dispositions:
Receivables	(4.7)	104.7	(156.8)
Inventories	(62.8)	123.3	66.1
Deferred income taxes and income taxes payable, net	10.5	52.3	(264.9)
Prepaid expenses and other current assets	3.2	15	10.8
Accounts payable	144.9	71	(118.3)
Accrued payroll	(8)	(52.4)	68.9
Other accrued liabilities	(32.2)	(114.9)	54.3
Net cash flows from operating activities - continuing operations	919.7	1,140.8	625.5
Net cash flows from operating activities - discontinued operations	34.5	34.7	633.7
Net cash flows from operating activities	954.2	1,175.5	1,259.2
Cash flows from investing activities:
Additions to property, plant and equipment	(251.6)	(242.1)	(277.5)
Sale of property, plant and equipment	8	13.2	35.7
Proceeds from divestitures	0	489	0
Purchase of business and intangible assets	(337.1)	(325.7)	(10.4)
Other items	4.5	0	0.3
Net cash flows from investing activities - continuing operations	(576.2)	(65.6)	(251.9)
Net cash flows from investing activities - discontinued operations	0	(123.7)	2,379.3
Net cash flows from investing activities	(576.2)	(189.3)	2,127.4
Cash flows from financing activities:
Net short-term borrowings	249.1	14.3	9.5
Issuance of long-term debt, net of debt issuance costs	797	0	0
Repayment of long-term debt	(242.3)	(1,064.5)	(2,523.2)
Payment of intangible asset financing arrangement	(14.4)	(14.9)	0
Repurchase of Conagra Brands, Inc. common shares	(967.3)	(1,000)	0
Sale of Conagra Brands, Inc. common shares	0	0	8.6
Cash dividends paid	(342.3)	(415)	(432.5)
Exercise of stock options and issuance of other stock awards, including tax withholdings	14.9	73.8	208.4
Other items	(1.6)	(1.9)	0
Net cash flows from financing activities - continuing operations	(506.9)	(2,408.2)	(2,729.2)
Net cash flows from financing activities - discontinued operations	0	839.1	(4)
Net cash flows from financing activities	(506.9)	(1,569.1)	(2,733.2)
Effect of exchange rate changes on cash and cash equivalents	5.5	(0.2)	(2)
Net change in cash and cash equivalents	(123.4)	(583.1)	651.4
Add: Cash balance included in assets held for sale and discontinued operations at beginning of period	0	36.4	49
Less: Cash balance included in assets held for sale and discontinued operations at end of period	0	0	36.4
Cash and cash equivalents at beginning of year	251.4	798.1	134.1
Cash and cash equivalents at end of year	$ 128	$ 251.4	$ 798.1

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	May 27, 2018
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Fiscal Year — The fiscal year of Conagra Brands, Inc. ("Conagra Brands", "Company", "we", "us", or "our") ends the last Sunday in May. The fiscal years for the consolidated financial statements presented consist of 52-week periods for fiscal years 2018, 2017, and 2016. Basis of Consolidation — The consolidated financial statements include the accounts of Conagra Brands, Inc. and all majority-owned subsidiaries. In addition, the accounts of all variable interest entities for which we have been determined to be the primary beneficiary are included in our consolidated financial statements from the date such determination is made. All significant intercompany investments, accounts, and transactions have been eliminated. On November 9, 2016, we completed the spinoff of Lamb Weston Holdings, Inc. ("Lamb Weston") through a distribution of 100% of our interest in Lamb Weston to holders of shares of our common stock as of November 1, 2016 (the "Spinoff"). In accordance with U.S. generally accepted accounting principles ("U.S. GAAP"), the results of operations of the Lamb Weston operations are presented as discontinued operations and, as such, have been excluded from continuing operations and segment results for all periods presented (see Note 6 for additional discussion). Investments in Unconsolidated Affiliates — The investments in, and the operating results of, 50%-or-less-owned entities not required to be consolidated are included in the consolidated financial statements on the basis of the equity method of accounting or the cost method of accounting, depending on specific facts and circumstances. We review our investments in unconsolidated affiliates for impairment whenever events or changes in business circumstances indicate that the carrying amount of the investments may not be fully recoverable. Evidence of a loss in value that is other than temporary includes, but is not limited to, the absence of an ability to recover the carrying amount of the investment, the inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment, or, where applicable, estimated sales proceeds which are insufficient to recover the carrying amount of the investment. Management's assessment as to whether any decline in value is other than temporary is based on our ability and intent to hold the investment and whether evidence indicating the carrying value of the investment is recoverable within a reasonable period of time outweighs evidence to the contrary. Management generally considers our investments in equity method investees to be strategic long-term investments. Therefore, management completes its assessments with a long-term viewpoint. If the fair value of the investment is determined to be less than the carrying value and the decline in value is considered to be other than temporary, an appropriate write-down is recorded based on the excess of the carrying value over the best estimate of fair value of the investment. Cash and Cash Equivalents — Cash and all highly liquid investments with an original maturity of three months or less at the date of acquisition, including short-term time deposits and government agency and corporate obligations, are classified as cash and cash equivalents. Receivables — Receivables from customers generally do not bear interest. Terms and collection vary by location and channel. The allowance for doubtful accounts represents our estimate of probable non-payments and credit losses in our existing receivables, as determined based on a review of past due balances and other specific account data. Account balances are written off against the allowance when we deem them uncollectible. The following table details the balances of our allowance for doubtful accounts and changes therein: Balance at Beginning of Period Additions Charged to Costs and Expenses Other Deductions from Reserves Balance at Close of Period Year ended May 27, 2018 $ 3.1 0.8 — 1.9 (2) $ 2.0 Year ended May 28, 2017 $ 3.2 1.0 — 1.1 (2) $ 3.1 Year ended May 29, 2016 $ 3.0 1.1 (0.1 ) (1) 0.8 (2) $ 3.2 (1) Primarily translation incurred during fiscal 2016. (2) Bad debts charged off and adjustments to previous reserves, less recoveries. Inventories — We use the lower of cost (determined using the first-in, first-out method) or market for valuing inventories. Property, Plant and Equipment — Property, plant and equipment are carried at cost. Depreciation has been calculated using the straight-line method over the estimated useful lives of the respective classes of assets as follows: Land improvements 1 - 40 years Buildings 15 - 40 years Machinery and equipment 3 - 20 years Furniture, fixtures, office equipment and other 5 - 15 years We review property, plant and equipment for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets may not be fully recoverable. Recoverability of an asset considered "held-and-used" is determined by comparing the carrying amount of the asset to the undiscounted net cash flows expected to be generated from the use of the asset. If the carrying amount is greater than the undiscounted net cash flows expected to be generated by the asset, the asset's carrying amount is reduced to its estimated fair value. An asset considered "held-for-sale" is reported at the lower of the asset's carrying amount or fair value. Goodwill and Other Identifiable Intangible Assets — Goodwill and other identifiable intangible assets with indefinite lives (e.g., brands or trademarks) are not amortized and are tested annually for impairment of value and whenever events or changes in circumstances indicate the carrying amount of the asset may be impaired. A significant amount of judgment is involved in determining if an indicator of impairment has occurred. Such indicators may include deterioration in general economic conditions, adverse changes in the markets in which an entity operates, increases in input costs that have negative effects on earnings and cash flows, or a trend of negative or declining cash flows over multiple periods, among others. The fair value that could be realized in an actual transaction may differ from that used to evaluate the impairment of goodwill and other intangible assets. In testing goodwill for impairment, we have the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (more than 50% ) that the estimated fair value of a reporting unit is less than its carrying amount. If we elect to perform a qualitative assessment and determine that an impairment is more likely than not, we are then required to perform a quantitative impairment test, otherwise no further analysis is required. We also may elect not to perform the qualitative assessment and, instead, proceed directly to the quantitative impairment test. Under the goodwill qualitative assessment, various events and circumstances that would affect the estimated fair value of a reporting unit are identified (similar to impairment indicators above). Furthermore, management considers the results of the most recent quantitative impairment test completed for a reporting unit and compares the weighted average cost of capital between the current and prior years for each reporting unit. Under the goodwill quantitative impairment test, the evaluation of impairment involves comparing the current fair value of each reporting unit to its carrying value, including goodwill. We estimate the fair value using level 3 inputs as defined by the fair value hierarchy. Refer to Note 20 for the definition of the levels in the fair value hierarchy. The inputs used to calculate the fair value include a number of subjective factors, such as estimates of future cash flows, estimates of our future cost structure, discount rates for our estimated cash flows, required level of working capital, assumed terminal value, and time horizon of cash flow forecasts. Prior to the fourth quarter of fiscal 2017, if the carrying value of a reporting unit exceeded its fair value, we completed a second step of the test to determine the amount of goodwill impairment loss, if any, to be recognized. In the second step, we estimated an implied fair value of the reporting unit's goodwill by allocating the fair value of the reporting unit to all of the assets and liabilities other than goodwill (including any unrecognized intangible assets). The impairment loss was equal to the excess of the carrying value of the goodwill over the implied fair value of that goodwill. Beginning in the fourth quarter of fiscal 2017, if the carrying value of a reporting unit exceeds its fair value, we recognize an impairment loss equal to the difference between the carrying value and estimated fair value of the reporting unit. In assessing other intangible assets not subject to amortization for impairment, we have the option to perform a qualitative assessment to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of such an intangible asset is less than its carrying amount. If we determine that it is not more likely than not that the fair value of such an intangible asset is less than its carrying amount, then we are not required to perform any additional tests for assessing intangible assets for impairment. However, if we conclude otherwise or elect not to perform the qualitative assessment, then we are required to perform a quantitative impairment test that involves a comparison of the estimated fair value of the intangible asset with its carrying value. If the carrying value of the intangible asset exceeds its fair value, an impairment loss is recognized in an amount equal to that excess. In fiscal 2018, 2017, and 2016 we elected to perform a quantitative impairment test for other intangible assets not subject to amortization. The estimates of fair value of intangible assets not subject to amortization are determined using a "relief from royalty" methodology, which is used in estimating the fair value of our brands/trademarks. Discount rate assumptions are based on an assessment of the risk inherent in the projected future cash flows generated by the respective intangible assets. Also subject to judgment are assumptions about royalty rates. Identifiable intangible assets with definite lives (e.g., licensing arrangements with contractual lives or customer relationships) are amortized over their estimated useful lives and tested for impairment whenever events or changes in circumstances indicate the carrying amount of the asset may be impaired. Identifiable intangible assets with definite lives are evaluated for impairment using a process similar to that used in evaluating elements of property, plant and equipment. If impaired, the asset is written down to its fair value. Refer to Note 9 for discussion of the impairment charges related to goodwill and intangible assets in fiscal 2018, 2017, and 2016. Fair Values of Financial Instruments — Unless otherwise specified, we believe the carrying value of financial instruments approximates their fair value. Environmental Liabilities — Environmental liabilities are accrued when it is probable that obligations have been incurred and the associated amounts can be reasonably estimated. We use third-party specialists to assist management in appropriately measuring the obligations associated with environmental liabilities. Such liabilities are adjusted as new information develops or circumstances change. We do not discount our environmental liabilities as the timing of the anticipated cash payments is not fixed or readily determinable. Management's estimate of our potential liability is independent of any potential recovery of insurance proceeds or indemnification arrangements. We do not reduce our environmental liabilities for potential insurance recoveries. Employment-Related Benefits — Employment-related benefits associated with pensions, postretirement health care benefits, and workers' compensation are expensed as such obligations are incurred. The recognition of expense is impacted by estimates made by management, such as discount rates used to value these liabilities, future health care costs, and employee accidents incurred but not yet reported. We use third-party specialists to assist management in appropriately measuring the obligations associated with employment-related benefits. We recognize changes in the fair value of pension plan assets and net actuarial gains or losses in excess of 10% of the greater of the market-related value of plan assets or the plan's projected benefit obligation (the "corridor") in current period expense annually as of our measurement date, which is our fiscal year-end, or when measurement is required otherwise under generally accepted accounting principles. Revenue Recognition — Revenue is recognized when title and risk of loss are transferred to customers upon delivery based on terms of sale and collectability is reasonably assured. Revenue is recognized as the net amount to be received after deducting estimated amounts for discounts, trade allowances, and returns of damaged and out-of-date products. Shipping and Handling — Amounts billed to customers related to shipping and handling are included in net sales. Shipping and handling costs are included in cost of goods sold. Marketing Costs — We promote our products with advertising, consumer incentives, and trade promotions. Such programs include, but are not limited to, discounts, coupons, rebates, and volume-based incentives. Advertising costs are expensed as incurred. Consumer incentives and trade promotion activities are recorded as a reduction of revenue or as a component of cost of goods sold based on amounts estimated as being due to customers and consumers at the end of the period, based principally on historical utilization and redemption rates. Advertising and promotion expenses totaled $278.6 million , $328.3 million , and $347.2 million in fiscal 2018 , 2017 , and 2016 , respectively, and are included in selling, general and administrative ("SG&A") expenses. Research and Development — We incurred expenses of $47.3 million , $44.6 million , and $59.6 million for research and development activities in fiscal 2018 , 2017 , and 2016 , respectively. Comprehensive Income — Comprehensive income includes net income, currency translation adjustments, certain derivative-related activity, changes in the value of available-for-sale investments, and changes in prior service cost and net actuarial gains (losses) from pension (for amounts not in excess of the 10% "corridor") and postretirement health care plans. On foreign investments we deem to be essentially permanent in nature, we do not provide for taxes on currency translation adjustments arising from converting an investment denominated in a foreign currency to U.S. dollars. When we determine that a foreign investment, as well as undistributed earnings, are no longer permanent in nature, estimated taxes will be provided for the related deferred tax liability (asset), if any, resulting from currency translation adjustments. The following table details the accumulated balances for each component of other comprehensive income (loss), net of tax: 2018 2017 2016 Currency translation losses, net of reclassification adjustments $ (94.7 ) $ (98.6 ) $ (95.2 ) Derivative adjustments, net of reclassification adjustments 1.0 (1.1 ) (0.4 ) Unrealized gains (losses) on available-for-sale securities 0.6 (0.3 ) (0.6 ) Pension and post-employment benefit obligations, net of reclassification adjustments (17.4 ) (112.9 ) (248.3 ) Accumulated other comprehensive loss 1 $ (110.5 ) $ (212.9 ) $ (344.5 ) 1 Net of stranded tax effects from change in tax rate as a result of the early adoption of ASU 2018-02 in the amount of $17.4 million which has been reclassified to retained earnings. The following table summarizes the reclassifications from accumulated other comprehensive loss into income (loss): Affected Line Item in the Consolidated Statement of Operations 1 2018 2017 2016 Net derivative adjustment, net of tax: Cash flow hedges $ 0.1 $ (0.2 ) $ (2.1 ) Interest expense, net 0.1 (0.2 ) (2.1 ) Total before tax — 0.1 0.8 Income tax expense $ 0.1 $ (0.1 ) $ (1.3 ) Net of tax Amortization of pension and postretirement healthcare liabilities: Net prior service benefit $ (0.4 ) $ (3.9 ) $ (5.1 ) Selling, general and administrative expenses Divestiture of Private Brands — — (4.3 ) Income (loss) from discontinued operations, net of tax Pension settlement of equity method investee — — (5.2 ) Equity method investment earnings Pension settlement 1.3 13.8 — Selling, general and administrative expenses Net actuarial loss — 0.5 0.1 Selling, general and administrative expenses 0.9 10.4 (14.5 ) Total before tax (0.2 ) (4.0 ) 4.9 Income tax expense $ 0.7 $ 6.4 $ (9.6 ) Net of tax Currency translation losses $ — $ — $ 73.4 Income (loss) from discontinued operations, net of tax — — 73.4 Total before tax — — — Income tax expense $ — $ — $ 73.4 Net of tax 1 Amounts in parentheses indicate income recognized in the Consolidated Statements of Operations. Foreign Currency Transaction Gains and Losses — We recognized net foreign currency transaction losses from continuing operations of $1.4 million , $1.5 million , and $5.1 million in fiscal 2018 , 2017 , and 2016 , respectively, in SG&A expenses. Business Combinations — We use the acquisition method in accounting for acquired businesses. Under the acquisition method, our financial statements reflect the operations of an acquired business starting from the completion of the acquisition. The assets acquired and liabilities assumed are recorded at their respective estimated fair values at the date of the acquisition. Any excess of the purchase price over the estimated fair values of the identifiable net assets acquired is recorded as goodwill. Reclassifications and other changes — Certain prior year amounts have been reclassified to conform with current year presentation. Use of Estimates — Preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions. These estimates and assumptions affect reported amounts of assets, liabilities, revenues, and expenses as reflected in the consolidated financial statements. Actual results could differ from these estimates. Accounting Changes — In July 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2015-11, Inventory , which requires an entity to measure inventory within the scope at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. We adopted this ASU prospectively in fiscal 2018. The adoption of this guidance did not have a material impact to our financial statements. In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which will allow a reclassification from accumulated other comprehensive income to retained earnings for the tax effects resulting from "An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018" (the "Act") that are stranded in accumulated other comprehensive income. This standard also requires certain disclosures about stranded tax effects. This ASU, however, does not change the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations. ASU 2018-02 is effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. It must be applied either in the period of adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate in the Act is recognized. We elected to early adopt this ASU for the period ended February 25, 2018. The amount of the reclassification was $17.4 million . Recently Issued Accounting Standards — In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers , which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP. On July 9, 2015, the FASB deferred the effective date of the new revenue recognition standard by one year. The updated standard is effective for fiscal years beginning after December 15, 2017. Based on the FASB's ASU, we will apply the new revenue standard in our fiscal year 2019. Early adoption in our fiscal year 2018 is permitted. Entities will have the option to adopt the ASU using either the full retrospective or modified retrospective transition method. We have concluded our assessment of the new standard and will be adopting the provisions of the ASU utilizing the modified retrospective transition method. The adoption of ASU 2014-09 will not have a material impact on our consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, Financial Instruments-Overall: Recognition and Measurement of Financial Assets and Financial Liabilities , which addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. The effective date for this standard is for fiscal years beginning after December 31, 2017. We do not expect ASU 2016-01 to have a material impact to our consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases , Topic 842, which requires lessees to reflect most leases on their balance sheet as assets and obligations. The effective date for the standard is for fiscal years beginning after December 15, 2018. Early adoption is permitted. We are evaluating the effect that this standard will have on our consolidated financial statements and related disclosures. The standard is to be applied under the modified retrospective method, with elective reliefs, which requires application of the new guidance for all periods presented. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments , which clarifies how companies present and classify certain cash receipts and cash payments in the statement of cash flows. The effective date for the standard is for fiscal years beginning after December 15, 2017. We do not expect ASU 2016-15 to have a material impact to our consolidated financial statements. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows: Restricted Cash , which provides amendments to current guidance to address the classifications and presentation of changes in restricted cash in the statement of cash flows. The effective date for the standard is for fiscal years beginning after December 15, 2017. We do not expect ASU 2016-18 to have a material impact to our consolidated financial statements. In January 2017, the FASB issued ASU 2017-01, Business Combinations: Clarifying the Definition of a Business , which provides a new framework for determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The effective date for the standard is for fiscal years beginning after December 15, 2017. We do not expect ASU 2017-01 to have a material impact to our consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, Retirement Benefits: Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost , which requires companies to present the service cost component of net benefit cost in the same line items in which they report compensation cost. Companies will present all other components of net benefit cost outside a subtotal of operating income, if presented, or disclosed separately. Also, only the service cost component may be eligible for capitalization where applicable. The amendments in this ASU should be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension cost and net periodic postretirement benefit cost in the income statement and prospectively for the capitalization of service cost components. The effective date for the standard is for fiscal years beginning after December 15, 2017. We will adopt ASU 2017-07 in our fiscal 2019. The estimated impact is a reclassification of a benefit of $80.4 million , a benefit of $55.2 million , and a charge of $303.8 million to non-operating income (expense) for fiscal 2018, 2017, and 2016, respectively. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities , which improves the financial reporting of hedging relationships to better portray the economic results of an entity's risk management activities in its financial statements and make certain targeted improvements to simplify the application of the hedge accounting guidance in current U.S. GAAP. The amendments in this update better align an entity's risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and presentation of hedge results. The effective date for the standard is for fiscal years beginning after December 15, 2018. Early adoption is permitted. We plan to early adopt this ASU at the beginning of our fiscal 2019. We do not expect ASU 2017-12 to have a material impact to our consolidated financial statements.

ACQUISITIONS

ACQUISITIONS	12 Months Ended
	May 27, 2018
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS On June 26, 2018, subsequent to the end of fiscal 2018, we entered into a definitive merger agreement with Pinnacle Foods Inc. ("Pinnacle") under which we will acquire all outstanding shares of Pinnacle common stock in a cash and stock transaction valued at approximately $10.9 billion , including Pinnacle's outstanding net debt. Under the terms of the transaction, Pinnacle shareholders will receive $43.11 per share in cash and 0.6494 shares of our common stock for each share of Pinnacle. The implied price of $68.00 per Pinnacle share is based on the volume-weighted average price of our stock for the five days ended June 21, 2018. The planned acquisition is expected to close by the end of calendar 2018 and remains subject to the approval of Pinnacle shareholders, the receipt of regulatory approvals, and other customary closing conditions. In February 2018, we acquired the Sandwich Bros. of Wisconsin ® business, maker of frozen breakfast and entree flatbread pocket sandwiches, for a cash purchase price of $87.3 million , net of cash acquired, including working capital adjustments. Approximately $57.8 million has been classified as goodwill pending determination of the final purchase price allocation, and $9.7 million and $7.1 million have been classified as non-amortizing and amortizing intangible assets, respectively. The amount allocated to goodwill is deductible for tax purposes. The business is included in the Refrigerated & Frozen segment. In October 2017, we acquired Angie's Artisan Treats, LLC, maker of Angie's ® BOOMCHICKAPOP ® ready-to-eat popcorn, for a cash purchase price of $249.8 million , net of cash acquired, including working capital adjustments. Approximately $155.2 million has been classified as goodwill pending determination of the final purchase price allocation, of which $95.4 million is deductible for income tax purposes. Approximately $73.8 million and $10.3 million of the purchase price have been allocated to non-amortizing and amortizing intangible assets, respectively. The business is primarily included in the Grocery & Snacks segment. In April 2017, we acquired protein-based snacking businesses Thanasi Foods LLC, maker of Duke’s ® meat snacks, and BIGS LLC, maker of BIGS ® seeds, for $217.6 million , net of cash acquired, including working capital adjustments. Approximately $133.3 million has been classified as goodwill, of which $70.5 million is deductible for income tax purposes. Approximately $65.1 million and $16.1 million of the purchase price have been allocated to non-amortizing and amortizing intangible assets, respectively. These businesses are primarily included in the Grocery & Snacks segment. In September 2016, we acquired the operating assets of Frontera Foods, Inc. and Red Fork LLC, including the Frontera ® , Red Fork ® , and Salpica ® brands. These businesses make authentic, gourmet Mexican food products and contemporary American cooking sauces. We acquired the business for $108.1 million , net of cash acquired, including working capital adjustments. Approximately $39.5 million has been classified as goodwill and $59.5 million and $7.2 million have been classified as non-amortizing and amortizing intangible assets, respectively. The amount allocated to goodwill is deductible for tax purposes. These businesses are reflected principally within the Grocery & Snacks segment, and to a lesser extent within the Refrigerated & Frozen and International segments. These acquisitions collectively contributed $214.3 million and $36.5 million to net sales during fiscal 2018 and 2017 , respectively. For each of these acquisitions, the amounts allocated to goodwill were primarily attributable to anticipated synergies, product portfolios, and other intangibles that do not qualify for separate recognition. Under the acquisition method of accounting, the assets acquired and liabilities assumed in these acquisitions were recorded at their respective estimated fair values at the date of acquisition.

RESTRUCTURING ACTIVITIES

RESTRUCTURING ACTIVITIES	12 Months Ended
	May 27, 2018
Restructuring and Related Activities [Abstract]
RESTRUCTURING ACTIVITIES	RESTRUCTURING ACTIVITIES Supply Chain and Administrative Efficiency Plan In May 2013, we announced the Supply Chain and Administrative Efficiency Plan (the "SCAE Plan"), our plan to integrate and restructure the operations of our Private Brands business, improve SG&A effectiveness and efficiencies, and optimize our supply chain network, manufacturing assets, dry distribution centers, and mixing centers. In fiscal 2016, we announced plans to realize efficiency benefits by reducing SG&A expenses and enhancing trade spend processes and tools, which plans were included as part of the SCAE Plan. Although we divested the Private Brands business, we have continued to implement the SCAE Plan, including by working to optimize our supply chain network, pursue cost reductions through our SG&A functions, enhance trade spend processes and tools, and improve productivity. Although we remain unable to make good faith estimates relating to the entire SCAE Plan, we are reporting on actions initiated through the end of fiscal 2018 , including the estimated amounts or range of amounts for each major type of costs expected to be incurred, and the charges that have resulted or will result in cash outflows. As of May 27, 2018 , our Board of Directors has approved the incurrence of up to $900.9 million of expenses in connection with the SCAE Plan, including expenses allocated for the Private Brands and Lamb Weston operations. We have incurred or expect to incur approximately $471.6 million of charges ( $322.1 million of cash charges and $149.5 million of non-cash charges) for actions identified to date under the SCAE Plan related to our continuing operations. We recognized charges of $38.0 million , $63.6 million , and $281.8 million in relation to the SCAE Plan related to our continuing operations in fiscal 2018, 2017, and 2016, respectively. We expect to incur costs related to the SCAE Plan over a multi-year period. We anticipate that we will recognize the following pre-tax expenses in association with the SCAE Plan related to our continuing operations (amounts include charges recognized from plan inception to May 27, 2018 ): Grocery & Snacks Refrigerated & Frozen International Foodservice Corporate Total Pension costs $ 33.4 $ 1.5 $ — $ — $ — $ 34.9 Accelerated depreciation 37.0 18.6 — — 1.2 56.8 Other cost of goods sold 11.9 2.1 — — — 14.0 Total cost of goods sold 82.3 22.2 — — 1.2 105.7 Severance and related costs, net 27.5 10.3 3.7 7.9 102.6 152.0 Fixed asset impairment (net of gains on disposal) 6.1 6.9 — — 11.2 24.2 Accelerated depreciation — — — — 4.1 4.1 Contract/lease cancellation expenses 1.0 0.6 0.9 — 84.4 86.9 Consulting/professional fees 1.0 0.4 0.1 — 54.0 55.5 Other selling, general and administrative expenses 16.4 3.3 — — 23.5 43.2 Total selling, general and administrative expenses 52.0 21.5 4.7 7.9 279.8 365.9 Consolidated total $ 134.3 $ 43.7 $ 4.7 $ 7.9 $ 281.0 $ 471.6 During fiscal 2018 , we recognized the following pre-tax expenses for the SCAE Plan related to our continuing operations: Grocery & Snacks Refrigerated & Frozen International Corporate Total Pension costs $ 0.5 $ — $ — $ — $ 0.5 Accelerated depreciation 2.0 — — — 2.0 Other cost of goods sold 5.3 — — — 5.3 Total cost of goods sold 7.8 — — — 7.8 Severance and related costs, net 2.6 — 1.2 0.7 4.5 Fixed asset impairment (net of gains on disposal) (1.2 ) — — 4.4 3.2 Accelerated depreciation — — — 1.5 1.5 Contract/lease cancellation expenses 0.2 — 0.3 13.0 13.5 Consulting/professional fees 0.1 — — 1.0 1.1 Other selling, general and administrative expenses 4.6 0.1 — 1.7 6.4 Total selling, general and administrative expenses 6.3 0.1 1.5 22.3 30.2 Consolidated total $ 14.1 $ 0.1 $ 1.5 $ 22.3 $ 38.0 Included in the above table are $30.6 million of charges that have resulted or will result in cash outflows and $7.4 million in non-cash charges. We recognized the following cumulative (plan inception to May 27, 2018 ) pre-tax expenses for the SCAE Plan related to our continuing operations in our Consolidated Statements of Operations: Grocery & Snacks Refrigerated & Frozen International Foodservice Corporate Total Pension costs $ 33.4 $ 1.5 $ — $ — $ — $ 34.9 Accelerated depreciation 33.0 18.6 — — 1.2 52.8 Other cost of goods sold 10.3 2.1 — — — 12.4 Total cost of goods sold 76.7 22.2 — — 1.2 100.1 Severance and related costs, net 26.5 10.3 3.7 7.9 102.2 150.6 Fixed asset impairment (net of gains on disposal) 6.1 6.9 — — 11.2 24.2 Accelerated depreciation — — — — 4.1 4.1 Contract/lease cancellation expenses 1.0 0.6 0.9 — 84.3 86.8 Consulting/professional fees 1.0 0.4 0.1 — 52.2 53.7 Other selling, general and administrative expenses 15.8 3.3 — — 21.7 40.8 Total selling, general and administrative expenses 50.4 21.5 4.7 7.9 275.7 360.2 Consolidated total $ 127.1 $ 43.7 $ 4.7 $ 7.9 $ 276.9 $ 460.3 Included in the above results are $316.1 million of charges that have resulted or will result in cash outflows and $144.2 million in non-cash charges. Not included in the above table are $130.2 million of pre-tax expenses ( $84.5 million of cash charges and $45.7 million of non-cash charges) related to the Private Brands operations which we sold in the third quarter of fiscal 2016 and $2.1 million of pre-tax expenses (all resulting in cash charges) related to Lamb Weston. Liabilities recorded for the SCAE Plan related to our continuing operations and changes therein for fiscal 2018 were as follows: Balance at May 28, Costs Incurred and Charged to Expense Costs Paid or Otherwise Settled Changes in Estimates Balance at May 27, 2018 Pension costs $ 31.8 $ — $ — $ 0.5 $ 32.3 Severance and related costs 13.8 5.7 (12.0 ) (1.2 ) 6.3 Consulting/professional fees 0.6 1.1 (1.6 ) — 0.1 Contract/lease cancellation 11.6 13.7 (20.2 ) (0.2 ) 4.9 Other costs 1.9 11.0 (12.7 ) — 0.2 Total $ 59.7 $ 31.5 $ (46.5 ) $ (0.9 ) $ 43.8

LONG-TERM DEBT

LONG-TERM DEBT	12 Months Ended
	May 27, 2018
Debt Disclosure [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT May 27, 2018 May 28, 2017 4.65% senior debt due January 2043 $ 176.7 $ 176.7 6.625% senior debt due August 2039 91.4 91.4 8.25% senior debt due September 2030 300.0 300.0 7.0% senior debt due October 2028 382.2 382.2 6.7% senior debt due August 2027 9.2 9.2 7.125% senior debt due October 2026 262.5 262.5 3.2% senior debt due January 2023 837.0 837.0 3.25% senior debt due September 2022 250.0 250.0 9.75% subordinated debt due March 2021 195.9 195.9 LIBOR plus 0.50% senior debt due October 2020 500.0 — 4.95% senior debt due August 2020 126.6 126.6 LIBOR plus 0.75% term loan due February 2019 300.0 — 2.1% senior debt due March 2018 — 70.0 1.9% senior debt due January 2018 — 119.6 2.00% to 9.59% lease financing obligations due on various dates through 2033 94.7 131.2 Other indebtedness 0.2 0.2 Total face value of debt 3,526.4 2,952.5 Unamortized fair value adjustment 27.6 30.8 Unamortized discounts (5.8 ) (6.4 ) Unamortized debt issuance costs (11.3 ) (10.9 ) Adjustment due to hedging activity 1.6 2.2 Less current installments (307.0 ) (199.0 ) Total long-term debt $ 3,231.5 $ 2,769.2 The aggregate minimum principal maturities of the long-term debt for each of the five fiscal years following May 27, 2018 , are as follows: 2019 $ 307.1 2020 6.7 2021 829.4 2022 6.9 2023 1,093.6 During the fourth quarter of fiscal 2018, we repaid the remaining principal balance of $70.0 million of our 2.1% senior notes on the maturity date of March 15, 2018. During the third quarter of fiscal 2018, we entered into a term loan agreement (the "Term Loan Agreement") with a financial institution. The Term Loan Agreement provides for term loans to the Company in an aggregate principal amount not in excess of $300.0 million . During the fourth quarter of fiscal 2018, we borrowed the full amount of the $300.0 million provided for under the Term Loan Agreement. The Term Loan Agreement matures on February 26, 2019. The term loan bears interest at a rate equal to three-month LIBOR plus 0.75% per annum and is fully prepayable without penalty. During the third quarter of fiscal 2018, we repaid the remaining principal balance of $119.6 million of our 1.9% senior notes on the maturity date of January 25, 2018. During the third quarter of fiscal 2018, we repaid the remaining capital lease liability balance of $28.5 million in connection with the early exit of an unfavorable lease contract (see Note 8). During the second quarter of fiscal 2018, we issued $500.0 million aggregate principal amount of floating rate notes due October 9, 2020. The notes bear interest at a rate equal to three-month LIBOR plus 0.50% per annum. During the third quarter of fiscal 2017, we repaid the remaining principal balance of $224.8 million of our 5.819% senior notes due 2017 and $248.2 million principal amount of our 7.0% senior notes due 2019, in each case prior to maturity, resulting in a net loss on early retirement of debt of $32.7 million . In connection with the Spinoff of Lamb Weston (see Note 6), Lamb Weston issued to us $1.54 billion aggregate principal amount of senior notes (the "Lamb Weston notes"). On November 9, 2016, we exchanged the Lamb Weston notes for $250.2 million aggregate principal amount of our 5.819% senior notes due 2017, $880.4 million aggregate principal amount of our 1.9% senior notes due 2018, $154.9 million aggregate principal amount of our 2.1% senior notes due 2018, $86.9 million aggregate principal amount of our 7.0% senior notes due 2019, and $71.1 million aggregate principal amount of our 4.95% senior notes due 2020 (collectively, the "Conagra notes"), which had been purchased in the open market by certain investment banks prior to the Spinoff. Following the exchange, we cancelled the Conagra notes. These actions resulted in a net loss of $60.6 million as a cost of early retirement of debt. During the first quarter of fiscal 2017, we repaid the entire principal balance of $550.0 million of our floating rate notes on the maturity date of July 21, 2016. During the third quarter of fiscal 2016, we repurchased $560.3 million aggregate principal amount of senior notes due 2043, $341.8 million aggregate principal amount of senior notes due 2039, $139.9 million aggregate principal amount of senior notes due 2019, $110.0 million aggregate principal amount of senior notes due 2026, $85.0 million aggregate principal amount of senior notes due 2020, and $163.0 million of aggregate principal amount of senior notes due 2023, in each case prior to maturity in a tender offer, resulting in a net loss of $23.9 million as a cost of early retirement of debt. During the third quarter of fiscal 2016, we repaid the entire principal balance of $750.0 million of our 1.30% senior notes on the maturity date of January 25, 2016. The repayment was primarily funded through the issuance of term loans totaling $600.0 million , which were repaid in the third quarter of fiscal 2016 with the proceeds from the divestiture of our Private Brands business. See Note 6 for repayment of senior notes issued by Ralcorp Holdings, Inc. ("Ralcorp") in an aggregate principal amount of $33.9 million in the third quarter of fiscal 2016. During the second quarter of fiscal 2016, we repaid the entire principal balance of $250.0 million of our 1.35% senior notes on the maturity date of September 10, 2015. Our most restrictive debt agreements (the Facility (as defined in Note 5) and the Term Loan Agreement) generally require our ratio of EBITDA (earnings before interest, taxes, depreciation and amortization) to interest expense to be not less than 3.0 to 1.0 and our ratio of funded debt to EBITDA to be not greater than 3.75 to 1.0 (provided that such ratio may be increased at the option of the Company in connection with a material transaction) , with each ratio to be calculated on a rolling four-quarter basis. As of May 27, 2018 , we were in compliance with all financial covenants. Net interest expense consists of: 2018 2017 2016 Long-term debt $ 161.2 $ 203.6 $ 302.9 Short-term debt 4.8 0.6 1.9 Interest income (3.8 ) (3.7 ) (1.2 ) Interest capitalized (3.5 ) (5.0 ) (7.8 ) $ 158.7 $ 195.5 $ 295.8 Interest paid from continuing operations was $164.5 million , $223.7 million , and $322.0 million in fiscal 2018 , 2017 , and 2016 , respectively. In connection with the planned acquisition of Pinnacle (see Note 2), we have secured $9.0 billion in fully committed bridge financing from affiliates of Goldman Sachs Group, Inc. The commitments under the committed bridge financing were subsequently reduced by the amounts of a term loan agreement we entered into on July 11, 2018 with a syndicate of financial institutions providing for term loans to us in an aggregate principal amount of up to $1.3 billion . The term loan agreement generally requires our ratio of EBITDA to interest expense to be not less than 3.0 to 1.0 and our ratio of funded debt to EBITDA to not exceed certain specified levels, with each ratio to be calculated on a rolling four-quarter basis. The funding under the term loan agreement is anticipated to occur simultaneously with the closing date of the acquisition. In connection with the acquisition, we expect to incur an aggregate of up to $8.3 billion of long-term debt, including for the payment of the cash portion of the merger consideration, the repayment of Pinnacle debt, the refinancing of certain Conagra debt, and the payment of related fees and expenses. The permanent financing is also expected to include approximately $600 million of incremental cash proceeds from the issuance of equity and/or divestitures.

CREDIT FACILITIES AND BORROWING

CREDIT FACILITIES AND BORROWINGS	12 Months Ended
	May 27, 2018
Debt Disclosure [Abstract]
CREDIT FACILITIES AND BORROWINGS	CREDIT FACILITIES AND BORROWINGS At May 27, 2018 , we had a revolving credit facility (the "Facility") with a syndicate of financial institutions that provides for a maximum aggregate principal amount outstanding at any one time of $1.25 billion (subject to increase to a maximum aggregate principal amount of $1.75 billion with the consent of the lenders). The Facility matures on February 16, 2022. As of May 27, 2018, there were no outstanding borrowings under the Facility. The Facility contains events of default customary for unsecured investment grade credit facilities with corresponding grace periods. The Facility contains customary affirmative and negative covenants for unsecured investment grade credit facilities of this type. It generally requires our ratio of EBITDA to interest expense to be not less than 3.0 to 1.0 and our ratio of funded debt to EBITDA to be not greater than 3.75 to 1.0 (provided that such ratio may be increased at the option of the Company in connection with a material transaction) , with each ratio to be calculated on a rolling four-quarter basis. As of May 27, 2018 , we were in compliance with the Facility's financial covenants. On July 11, 2018, subsequent to our fiscal year end, we entered into an amended and restated revolving credit agreement with a syndicate of financial institutions providing for a revolving credit facility in a maximum aggregate principal amount outstanding at any one time of $1.6 billion (subject to increase to a maximum aggregate principal amount of $2.1 billion ). It replaces the existing Facility and generally requires our ratio of EBITDA to interest expense to be not less than 3.0 to 1.0 and our ratio of funded debt to EBITDA to not exceed certain specified levels, with each ratio to be calculated on a rolling four-quarter basis. We finance our short-term liquidity needs with bank borrowings, commercial paper borrowings, and bankers' acceptances. As of May 27, 2018 , we had $277.0 million outstanding under our commercial paper program at an average weighted interest rate of 2.08% . As of May 28, 2017 , we had $26.2 million outstanding under our commercial paper program at an average weighted interest rate of 1.23% .

DISCONTINUED OPERATIONS AND OTH

DISCONTINUED OPERATIONS AND OTHER DIVESTITURES	12 Months Ended
	May 27, 2018
Discontinued Operations and Disposal Groups [Abstract]
DISCONTINUED OPERATIONS AND OTHER DIVESTITURES	DISCONTINUED OPERATIONS AND OTHER DIVESTITURES Lamb Weston Spinoff On November 9, 2016, we completed the Spinoff of our Lamb Weston business. As of such date, we did not beneficially own any equity interest in Lamb Weston and no longer consolidated Lamb Weston into our financial results. The business results were previously reported in the Commercial segment. We reflected the results of this business as discontinued operations for all periods presented. The summary comparative financial results of the Lamb Weston business through the date of the Spinoff, included within discontinued operations, were as follows: 2018 2017 2016 Net sales $ — $ 1,407.9 $ 2,975.0 Income (loss) from discontinued operations before income taxes and equity method investment earnings $ (0.3 ) $ 172.3 $ 474.8 Income (loss) before income taxes and equity method investment earnings (0.3 ) 172.3 474.8 Income tax expense (benefit) (14.6 ) 87.5 178.9 Equity method investment earnings — 15.9 71.7 Income from discontinued operations, net of tax 14.3 100.7 367.6 Less: Net income attributable to noncontrolling interests — 6.8 9.2 Net income from discontinued operations attributable to Conagra Brands, Inc. $ 14.3 $ 93.9 $ 358.4 During fiscal 2017 , we incurred $74.8 million of expenses in connection with the Spinoff primarily related to professional fees and contract services associated with preparation of regulatory filings and separation activities. These expenses are reflected in income from discontinued operations. During fiscal 2018, a $14.5 million income tax benefit was recorded due to an adjustment of the estimated deductibility of these costs. In connection with the Spinoff, total assets of $2.28 billion and total liabilities of $2.98 billion (including debt of $2.46 billion ) were transferred to Lamb Weston. As part of the consideration for the Spinoff, the Company received a cash payment from Lamb Weston in the amount of $823.5 million . See Note 4 for discussion of the debt-for-debt exchange related to the Spinoff. We entered into a transition services agreement in connection with the Lamb Weston Spinoff and recognized $2.2 million and $4.2 million of income for the performance of services during fiscal 2018 and 2017 , respectively, classified within SG&A expenses. Private Brands Operations On February 1, 2016, pursuant to the Stock Purchase Agreement, dated as of November 1, 2015, we completed the disposition of our Private Brands operations to TreeHouse Foods, Inc. ("Treehouse") for $2.6 billion in cash on a debt-free basis. As a result of the disposition, we recognized a pre-tax charge of $1.92 billion ( $1.44 billion after-tax) in fiscal 2016 to write-down the goodwill and long-lived assets to the final sales price, less costs to sell, and to recognize the final loss of the Private Brands business. We reflected the results of this business as discontinued operations for all periods presented. In fiscal 2016, we repaid senior notes issued by Ralcorp in an aggregate principal amount of $33.9 million , consisting of 4.95% senior notes due August 15, 2020 in an aggregate principal amount of $17.2 million (with an effective interest rate of 2.83% ) and 6.625% senior notes due August 15, 2039 in total an aggregate principal amount of $16.7 million (with an effective interest rate of 4.82% ), in each case, prior to maturity, resulting in a loss $5.4 million as a cost of early retirement of debt, which is reflected in discontinued operations. The summary comparative financial results of the Private Brands business, included within discontinued operations, were as follows: 2018 2017 2016 Net sales $ — $ — $ 2,490.6 Loss on sale of business $ — $ (1.6 ) $ — Long-lived asset impairment charges — — (1,923.0 ) Income from operations of discontinued operations before income taxes 0.4 3.9 168.0 Income (loss) before income taxes and equity method investment earnings 0.4 2.3 (1,755.0 ) Income tax expense (benefit) 0.5 (0.3 ) (593.1 ) Income (loss) from discontinued operations, net of tax $ (0.1 ) $ 2.6 $ (1,161.9 ) We entered into a transition services agreement with TreeHouse and recognized $2.2 million , $16.9 million , and $8.3 million of income for the performance of services during fiscal 2018 , 2017 , and 2016, respectively, classified within SG&A expenses. ConAgra Mills Operations On May 29, 2014, the Company, Cargill, Incorporated ("Cargill"), and CHS, Inc. ("CHS") completed the formation of the Ardent Mills joint venture. In connection with the formation, we contributed to Ardent Mills all of the assets of ConAgra Mills, our milling operations. Our equity in the earnings of Ardent Mills is reflected in our continuing operations. In fiscal 2017, we adjusted a multi-employer pension withdrawal liability related to our former milling operations by $2.0 million ( $1.3 million after-tax). This expense was recognized within discontinued operations. Other Divestitures During the third quarter of fiscal 2018, we entered into an agreement to sell our Del Monte ® processed fruit and vegetable business in Canada, which is part of our International segment, to Bonduelle Group. The transaction was completed in the first quarter of fiscal 2019 and was valued at approximately $43.0 million Canadian dollars, which was approximately $34.0 million U.S. dollars at the exchange rate on the date of announcement. The assets of this business have been reclassified as assets held for sale within our Consolidated Balance Sheets for all periods presented. The assets classified as held for sale reflected in our Consolidated Balance Sheets related to the Del Monte ® processed fruit and vegetable business in Canada were as follows: May 27, 2018 May 28, 2017 Current assets $ 6.1 $ 6.3 Noncurrent assets (including goodwill of $5.8 million) 11.5 11.4 During the fourth quarter of fiscal 2017, we signed an agreement to sell our Wesson ® oil business, which is part of our Grocery & Snacks segment, to The J.M. Smucker Company ("Smucker"). During the fourth quarter of fiscal 2018, Conagra Brands and Smucker terminated the agreement. This outcome followed the decision of the Federal Trade Commission, announced on March 5, 2018, to challenge the pending sale. The Company is still actively marketing the Wesson ® oil business and expects to sell it within the next twelve months. The assets of this business have been reclassified as assets held for sale within our Consolidated Balance Sheets for all periods presented. In connection with the initial pending sale of the Wesson ® oil business, we recognized an impairment charge of $27.6 million within SG&A expenses in fiscal 2017, as a production facility was not initially included in the assets to be sold, and we did not expect to recover the carrying value of this facility through future associated cash flows. Subsequent to the terminated agreement with Smucker, this production facility has been included in noncurrent assets held for sale. The assets classified as held for sale reflected in our Consolidated Balance Sheets related to the Wesson ® oil business were as follows: May 27, 2018 May 28, 2017 Current assets $ 37.7 $ 35.5 Noncurrent assets (including goodwill of $74.5 million) 101.0 102.8 During the first quarter of fiscal 2017, we completed the sales of our Spicetec Flavors & Seasonings business ("Spicetec") and our JM Swank business, each of which was part of our Commercial segment, for $329.7 million and $159.3 million , respectively, in cash, net of cash included in the dispositions. We recognized pre-tax gains from the sales of $144.8 million and $52.6 million , respectively. We entered into transition services agreements in connection with the sales of these businesses and recognized $0.2 million and $1.9 million of income during fiscal 2018 and fiscal 2017 , respectively, classified within SG&A expenses. In addition, we are actively marketing certain other assets. These assets have been reclassified as assets held for sale within our Consolidated Balance Sheets for all periods presented. The balance of these assets classified as held for sale was $10.4 million and $14.9 million in our Corporate and Grocery & Snacks segments, respectively, at May 27, 2018 and $11.6 million and $14.6 million in our Corporate and Grocery & Snacks segments, respectively, at May 28, 2017 .

INVESTMENTS IN JOINT VENTURES

INVESTMENTS IN JOINT VENTURES	12 Months Ended
	May 27, 2018
Equity Method Investments and Joint Ventures [Abstract]
INVESTMENTS IN JOINT VENTURES	INVESTMENTS IN JOINT VENTURES The total carrying value of our equity method investments at the end of fiscal 2018 and 2017 was $776.2 million and $741.3 million , respectively. These amounts are included in other assets and reflect our 44% ownership interest in Ardent Mills and 50% ownership interests in other joint ventures. Due to differences in fiscal reporting periods, we recognized the equity method investment earnings on a lag of approximately one month. In fiscal 2018 , we had purchases from our equity method invest ees of $34.9 million . Total dividends received from equity method investments in fiscal 2018 were $62.5 million . In fiscal 2017 , we had purchases from our equity method investees of $41.8 million . Total dividends received from equity method investments in fiscal 2017 were $ 68.2 million . In fiscal 2016 , we had sales to and purchases from our equity method investees of $1.6 million and $61.2 million , respectively. Total dividends received from equity method investments in fiscal 2016 were $40.4 million . We entered into transition services agreements in connection with the Ardent Mills formation and recognized $0.1 million and $9.7 million of income for the performance of transition services during fiscal 2017 and 2016 , respectively, classified within SG&A expenses. Summarized combined financial information for our equity method investments on a 100% basis is as follows: 2018 2017 2016 Net Sales: Ardent Mills $ 3,344.1 $ 3,180.0 $ 3,395.3 Others 198.8 177.7 167.2 Total net sales $ 3,542.9 $ 3,357.7 $ 3,562.5 Gross margin: Ardent Mills $ 386.5 $ 340.3 $ 339.2 Others 34.8 34.6 32.8 Total gross margin $ 421.3 $ 374.9 $ 372.0 Earnings after income taxes: Ardent Mills $ 197.0 $ 152.0 $ 142.9 Others 10.1 10.1 6.4 Total earnings after income taxes $ 207.1 $ 162.1 $ 149.3 May 27, 2018 May 28, 2017 Ardent Mills: Current assets $ 974.6 $ 937.2 Noncurrent assets 1,675.7 1,694.2 Current liabilities 355.6 388.9 Noncurrent liabilities 510.9 518.0 Others: Current assets $ 76.4 $ 75.5 Noncurrent assets 15.5 12.2 Current liabilities 37.5 44.5 Noncurrent liabilities 0.1 —

VARIABLE INTEREST ENTITIES

VARIABLE INTEREST ENTITIES	12 Months Ended
	May 27, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
VARIABLE INTEREST ENTITIES	VARIABLE INTEREST ENTITIES Variable Interest Entities Not Consolidated We lease or leased certain office buildings from entities that we have determined to be variable interest entities. The lease agreements with these entities include fixed-price purchase options for the assets being leased. The lease agreements also contain contingent put options (the "lease put options") that allow or allowed the lessors to require us to purchase the buildings at the greater of original construction cost, or fair market value, without a lease agreement in place (the "put price") in certain limited circumstances. As a result of substantial impairment charges related to our divested Private Brands operations, these lease put options became exercisable. During fiscal 2016, we entered into a series of related transactions in which we exchanged a warehouse we owned in Indiana for two buildings and parcels of land that we leased as part of our Omaha corporate offices. Concurrent with the asset exchange, the leases on the two Omaha corporate buildings, which were subject to contingent put options, were canceled. We recognized aggregate charges of $55.6 million for the early termination of these leases. We also entered into a lease for the warehouse in Indiana and we recorded a financing lease obligation of $74.2 million . During fiscal 2017, one of these lease agreements expired. As a result of this expiration, we reversed the applicable accrual and recognized a benefit of $ 6.7 million in SG&A expenses. During the third quarter of fiscal 2018, we purchased two buildings that were subject to lease put options and recognized net losses totaling $48.2 million for the early exit of unfavorable lease contracts. As of May 27, 2018 , there was one remaining leased building subject to a lease put option for which the put option price exceeded the estimated fair value of the property by $8.2 million , of which we had accrued $1.2 million . We are amortizing the difference between the put price and the estimated fair value (without a lease agreement in place) of the property over the remaining lease term within SG&A expenses. This lease is accounted for as an operating lease, and accordingly, there are no material assets and liabilities, other than the accrued portion of the put price, associated with this entity included in the Consolidated Balance Sheets. We have determined that we do not have the power to direct the activities that most significantly impact the economic performance of this entity. In making this determination, we have considered, among other items, the terms of the lease agreement, the expected remaining useful life of the asset leased, and the capital structure of the lessor entity.

GOODWILL AND OTHER IDENTIFIABLE

GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS	12 Months Ended
	May 27, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS	GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS The change in the carrying amount of goodwill for fiscal 2018 and 2017 was as follows: Grocery & Snacks Refrigerated & Frozen International Foodservice Total Balance as of May 29, 2016 $ 2,273.1 $ 1,028.9 $ 442.8 $ 571.1 $ 4,315.9 Impairment — — (198.9 ) — (198.9 ) Acquisitions 166.0 8.3 — — 174.3 Currency translation — 0.1 3.9 — 4.0 Balance as of May 28, 2017 $ 2,439.1 $ 1,037.3 $ 247.8 $ 571.1 $ 4,295.3 Acquisitions 155.2 57.8 — — 213.0 Purchase accounting adjustments (1.5 ) — — — (1.5 ) Currency translation — 0.6 (4.9 ) — (4.3 ) Balance as of May 27, 2018 $ 2,592.8 $ 1,095.7 $ 242.9 $ 571.1 $ 4,502.5 Other identifiable intangible assets were as follows: 2018 2017 Gross Accumulated Gross Accumulated Non-amortizing intangible assets $ 918.3 $ — $ 829.7 $ — Amortizing intangible assets 579.4 213.2 573.5 179.5 $ 1,497.7 $ 213.2 $ 1,403.2 $ 179.5 During fiscal 2018, we reclassified $3.0 million and $9.2 million of goodwill and other identifiable intangible assets, respectively, to noncurrent assets held for sale for all periods presented in conjunction with the then pending divestitures of the Del Monte ® processed fruit and vegetable business in Canada and our Wesson ® oil business. During fiscal 2018, as a result of our annual impairment test for indefinite lived intangibles, we recognized impairment charges of $4.0 million for our HK Anderson ® , Red Fork ® , and Salpica ® brands in our Grocery & Snacks segment. We also recognized an impairment charge of $0.8 million for our Aylmer ® brand in our International segment. In the first quarter of fiscal 2017, in anticipation of the Spinoff, we changed our reporting segments. In accordance with applicable accounting guidance, we were required to determine new reporting units at a lower level (at the operating segment or one level lower, as applicable). When such a determination was made, we were required to perform a goodwill impairment analysis for each of the new reporting units. We performed an assessment of impairment of goodwill for the new Canadian reporting unit within the new International reporting segment. Estimating the fair value of individual reporting units requires us to make assumptions and estimates regarding our future plans and future industry and economic conditions. We estimated the future cash flows of the Canadian reporting unit and calculated the net present value of those estimated cash flows using a risk adjusted discount rate, in order to estimate the fair value of each reporting unit from the perspective of a market participant. We used discount rates and terminal growth rates of 7.5% and 2% , respectively, to calculate the present value of estimated future cash flows. We then compared the estimated fair value of the reporting unit to the historical carrying value (including allocated assets and liabilities of certain shared and Corporate functions), and determined that the fair value of the reporting unit was less than the carrying value in the first quarter of fiscal 2017. With the assistance of a third-party valuation specialist, we estimated the fair value of the assets and liabilities of this reporting unit in order to determine the implied fair value of goodwill. We recognized an impairment charge for the difference between the implied fair value of goodwill and the carrying value of goodwill. Accordingly, during the first quarter of fiscal 2017, we recorded charges totaling $139.2 million for the impairment of goodwill. As part of the assessment of the fair value of each asset and liability within the Canadian reporting unit, with the assistance of the third-party valuation specialist, we estimated the fair value of our Canadian Del Monte ® brand to be less than its carrying value. In accordance with applicable accounting guidance, we also recognized an impairment charge during the first quarter of fiscal 2017 of $24.4 million to write-down the intangible asset to its estimated fair value. We also performed an assessment of impairment of goodwill for the new Mexican reporting unit within the International reporting segment using similar methods to those described above. We used discount rates and terminal growth rates of 8.5% and 3% , respectively, to calculate the present value of estimated future cash flows. We determined that the estimated fair value of this reporting unit exceeded the carrying value of its net assets by approximately 5% . Accordingly, we did not recognize an impairment of the goodwill in the Mexican reporting unit. During the second quarter of fiscal 2017, as a result of further deterioration in forecasted sales and profits primarily due to foreign exchange rates, we performed an additional assessment of impairment of goodwill for the new Mexican reporting unit. We used discount rates and terminal growth rates of 8.5% and 3% , respectively, to calculate the present value of estimated future cash flows. We then compared the estimated fair value of the reporting unit to the historical carrying value (including allocated assets and liabilities of certain shared and Corporate functions), and determined that the fair value of the reporting unit was less than the carrying value in the second quarter of fiscal 2017. With the assistance of a third-party valuation specialist, we estimated the fair value of the assets and liabilities of this reporting unit in order to determine the implied fair value of goodwill. We recognized an impairment charge for the difference between the implied fair value of goodwill and the carrying value of goodwill. Accordingly, during the second quarter of fiscal 2017, we recorded charges totaling $43.9 million for the impairment of goodwill. During the fourth quarter of fiscal 2017, in conjunction with our annual impairment testing, we adopted ASU 2017-04, Simplifying the Test for Goodwill Impairment. As a result of further deterioration in forecasted sales and profits, we performed an additional assessment of impairment of goodwill for the new Mexican reporting unit. We used discount rates and terminal growth rates of 9.0% and 3% , respectively, to calculate the present value of estimated future cash flows. We then compared the estimated fair value of the reporting unit to the historical carrying value (including allocated assets and liabilities of certain shared and Corporate functions), and determined that the fair value of the reporting unit was less than the carrying value in the fourth quarter of fiscal 2017. With the assistance of a third-party valuation specialist, we estimated the fair value of the reporting unit. We recognized an impairment charge of $15.8 million , equal to the difference between the carrying value and estimated fair value of the reporting unit. In fiscal 2017, due to declining sales of certain brands, we elected to perform a quantitative impairment test for indefinite lived intangibles of those brands. During fiscal 2017, we recognized impairment charges of $7.1 million for our Del Monte ® brand and $5.5 million for our Aylmer ® brand in our International segment. We also recognized impairment charges of $67.1 million for our Chef Boyardee ® brand and $1.1 million for our Fiddle Faddle ® brand in our Grocery & Snacks segment. During fiscal 2016, we also elected to perform a quantitative impairment test for indefinite lived intangibles and recognized an impairment charge of $50.1 million in our Grocery & Snacks segment for our Chef Boyardee ® brand. See Note 6 for a discussion of impairments related to discontinued operations. Non-amortizing intangible assets are comprised of brands and trademarks. Amortizing intangible assets, carrying a remaining weighted average life of approximately 14 years , are principally composed of customer relationships, licensing arrangements, and acquired intellectual property. For fiscal 2018 , 2017 , and 2016 , we recognized amortization expense of $34.9 million , $33.6 million , and $34.6 million , respectively. Based on amortizing assets recognized in our Consolidated Balance Sheet as of May 27, 2018 , amortization expense is estimated to average $32.8 million for each of the next five years, with a high expense of $33.3 million in fiscal year 2019 and decreasing to a low expense of $30.9 million in fiscal year 2023. In the first quarter of fiscal 2016, we entered into an agreement for the use of certain intellectual property and recorded an amortizing intangible asset of $92.8 million , for which cash payments of $14.4 million , $14.9 million , and $10.4 million were made in the first quarter of fiscal 2018, 2017, and 2016, respectively. Remaining payments will be made over a four -year period.

EARNINGS (LOSS) PER SHARE

EARNINGS (LOSS) PER SHARE	12 Months Ended
	May 27, 2018
Earnings Per Share [Abstract]
EARNINGS (LOSS) PER SHARE	EARNINGS (LOSS) PER SHARE Basic earnings (loss) per share is calculated on the basis of weighted average outstanding shares of common stock. Diluted earnings (loss) per share is computed on the basis of basic weighted average outstanding shares of common stock adjusted for the dilutive effect of stock options, restricted stock unit awards, and other dilutive securities. The following table reconciles the income and average share amounts used to compute both basic and diluted earnings (loss) per share: 2018 2017 2016 Net income (loss) available to Conagra Brands, Inc. common stockholders: Income from continuing operations attributable to Conagra Brands, Inc. common stockholders $ 794.1 $ 544.1 $ 126.6 Income (loss) from discontinued operations, net of tax, attributable to Conagra Brands, Inc. common stockholders 14.3 95.2 (803.6 ) Net income (loss) attributable to Conagra Brands, Inc. common stockholders $ 808.4 $ 639.3 $ (677.0 ) Less: Increase in redemption value of noncontrolling interests in excess of earnings allocated — 0.8 4.8 Net income (loss) available to Conagra Brands, Inc. common stockholders $ 808.4 $ 638.5 $ (681.8 ) Weighted average shares outstanding: Basic weighted average shares outstanding 403.9 431.9 434.4 Add: Dilutive effect of stock options, restricted stock unit awards, and other dilutive securities 3.5 4.1 4.1 Diluted weighted average shares outstanding 407.4 436.0 438.5 For fiscal 2018, 2017, and 2016, there were 1.3 million , 0.8 million , and 0.4 million stock options outstanding, respectively, that were excluded from the computation of diluted weighted average shares because the effect was antidilutive.

INVENTORIES

INVENTORIES	12 Months Ended
	May 27, 2018
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES The major classes of inventories were as follows: May 27, 2018 May 28, 2017 Raw materials and packaging $ 206.2 $ 182.1 Work in process 92.4 91.9 Finished goods 651.1 606.6 Supplies and other 47.4 47.3 Total $ 997.1 $ 927.9

OTHER NONCURRENT LIABILITIES

OTHER NONCURRENT LIABILITIES	12 Months Ended
	May 27, 2018
Other Liabilities Disclosure [Abstract]
OTHER NONCURRENT LIABILITIES	OTHER NONCURRENT LIABILITIES Other noncurrent liabilities consisted of: May 27, 2018 May 28, 2017 Postretirement health care and pension obligations $ 261.7 $ 709.8 Noncurrent income tax liabilities 490.4 466.5 Self-insurance liabilities 27.1 29.0 Environmental liabilities (see Note 17) 56.0 54.7 Technology agreement liability (see Note 9) 42.7 56.4 Other 187.3 212.4 $ 1,065.2 $ 1,528.8

CAPITAL STOCK

CAPITAL STOCK	12 Months Ended
	May 27, 2018
Equity [Abstract]
CAPITAL STOCK	CAPITAL STOCK The total number of shares we are authorized to issue is 1,218,050,000 shares, which shares may be issued as follows: 1,200,000,000 shares of common stock, par value $5.00 per share; 150,000 shares of Class B Preferred Stock, par value $50.00 per share; 250,000 shares of Class C Preferred Stock, par value $100.00 per share; 1,100,000 shares of Class D Preferred Stock, no par value per share; and 16,550,000 shares of Class E Preferred Stock, no par value per share. There were no preferred shares issued or outstanding as of May 27, 2018 . We have repurchased our shares of common stock from time to time after considering market conditions and in accordance with repurchase limits authorized by our Board of Directors. In October 2016, our Board of Directors approved a $1.25 billion increase to our share repurchase authorization. The Board of Directors approved further increases to the share repurchase program of $1.0 billion each in May 2017 and May 2018. We repurchased 27.4 million shares of our common stock for approximately $967.3 million and 25.1 million shares of our common stock for approximately $1.0 billion in fiscal 2018 and 2017 , respectively, under this program.

SHARE-BASED PAYMENTS

SHARE-BASED PAYMENTS	12 Months Ended
	May 27, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
SHARE-BASED PAYMENTS	SHARE-BASED PAYMENTS In accordance with stockholder-approved plans, we issue share-based payments under various stock-based compensation arrangements, including stock options, restricted stock units, cash-settled restricted stock units, performance shares, and other share-based awards. The shares to be delivered under the plan may consist, in whole or part, of treasury stock or authorized but unissued stock, not reserved for any other purpose. On September 19, 2014, the stockholders approved the Conagra Brands 2014 Stock Plan (the "Plan"), which was amended on December 11, 2017. As amended, the Plan authorized the issuance of up to 40.3 million shares of Conagra Brands common stock as well as certain shares of stock subject to outstanding awards under predecessor stock plans that expire, lapse, are cancelled, terminated, forfeited, or otherwise become unexercisable. At May 27, 2018 , approximately 42.5 million shares were reserved for granting additional options, restricted stock units, cash-settled restricted stock units, performance shares, or other share-based awards. All amounts below are of continuing and discontinued operations. Share Unit Plans In accordance with stockholder-approved plans, we issue stock under various stock-based compensation arrangements, including restricted stock units, cash-settled restricted stock units, and other share-based awards ("share units"). These awards generally have requisite service periods of three years . Under each arrangement, stock is issued without direct cost to the employee. We estimate the fair value of the share units based upon the market price of our stock at the date of grant. Certain share unit grants do not provide for the payment of dividend equivalents to the participant during the requisite service period (vesting period). For those grants, the value of the grants is reduced by the net present value of the foregone dividend equivalent payments. We recognize compensation expense for share unit awards on a straight-line basis over the requisite service period, accounting for forfeitures as they occur. All cash-settled restricted stock units are marked-to-market and presented within other current and noncurrent liabilities in our Consolidated Balance Sheets. The compensation expense for our stock-settled share unit awards totaled $21.8 million , $18.2 million , and $25.1 million for fiscal 2018 , 2017 , and 2016 , respectively, including discontinued operations of $1.4 million and $3.9 million for fiscal 2017 and 2016, respectively. The tax benefit related to the stock-settled share unit award compensation expense for fiscal 2018 , 2017 , and 2016 was $7.2 million , $7.0 million , and $9.6 million , respectively. The compensation expense for our cash-settled share unit awards totaled $5.8 million , $20.9 million , and $33.9 million for fiscal 2018 , 2017 , and 2016 , respectively, including discontinued operations of $2.6 million and $7.4 million for fiscal 2017 and 2016, respectively. The tax benefit related to the cash-settled share unit award compensation expense for fiscal 2018 , 2017 , and 2016 was $1.9 million , $8.0 million , and $13.0 million , respectively. No cash-settled share unit awards were granted in fiscal 2018. The following table summarizes the nonvested share units as of May 27, 2018 and changes during the fiscal year then ended: Stock-settled Cash-settled Share Units Share Units (in Millions) Weighted Average Grant-Date Fair Value Share Units (in Millions) Weighted Average Grant-Date Fair Value Nonvested share units at May 28, 2017 1.56 $ 31.59 1.21 $ 30.52 Granted 0.87 $ 34.16 — $ — Vested/Issued (0.53 ) $ 26.58 (0.42 ) $ 22.86 Forfeited (0.12 ) $ 33.77 (0.08 ) $ 34.60 Nonvested share units at May 27, 2018 1.78 $ 34.20 0.71 $ 34.58 During fiscal 2018 , 2017 , and 2016 , we granted 0.9 million , 0.6 million , and 1.0 million stock-settled share units, respectively, with a weighted average grant date value of $34.16 , $46.79 , and $43.64 , respectively. During fiscal 2017 and 2016 , we granted 0.4 million and 0.8 million cash-settled share units, respectively, with a weighted average grant date value of $48.07 and $44.48 , respectively. The total intrinsic value of stock-settled share units vested was $18.5 million , $27.0 million , and $48.8 million during fiscal 2018 , 2017 , and 2016 , respectively. The total intrinsic value of cash-settled share units vested was $14.2 million , $24.0 million , and $44.9 million during fiscal 2018 , 2017 , and 2016 , respectively. At May 27, 2018 , we had $22.8 million and $5.2 million of total unrecognized compensation expense that will be recognized over a weighted average period of 1.8 years and 1.0 year , related to stock-settled share unit awards and cash-settled share unit awards, respectively. Performance-Based Share Plan Performance shares are granted to selected executives and other key employees with vesting contingent upon meeting various Company-wide performance goals. The performance goal for one-third of the target number of performance shares for the three -year performance period ending in fiscal 2018 (the "2018 performance period") is based on our fiscal 2016 EBITDA return on capital, subject to certain adjustments. Another one-third of the target number of performance shares granted for the 2018 performance period is based on our fiscal 2017 EBITDA return on capital, subject to certain adjustments. The fiscal 2017 EBITDA return on capital target, when set, excluded the results of Lamb Weston. The performance goal for the last one-third of the target number of performance shares granted for the 2018 performance period is based on our fiscal 2018 diluted earnings per share ("EPS") compound annual growth rate ("CAGR"), subject to certain adjustments. In addition, for certain participants, all performance shares for the 2018 performance period are subject to an overarching EPS goal that must be met in each fiscal year of the 2018 performance period before any pay out can be made to such participants on the performance shares. The performance goal for one-third of the target number of performance shares for the three -year performance period ending in fiscal 2019 (the "2019 performance period") is based on our fiscal 2017 EBITDA return on capital, subject to certain adjustments. The fiscal 2017 EBITDA return on capital target, when set, excluded the results of Lamb Weston. The performance goal for the final two-thirds of the target number of performance shares granted for the 2019 performance period is based on our diluted EPS CAGR, subject to certain adjustments, measured over the two -year period ending in fiscal 2019. In addition, for certain participants, all performance shares for the 2019 performance period are subject to an overarching EPS goal that must be met in each fiscal year of the 2019 performance period before any pay out can be made to such participants on the performance shares. The performance goal for the three -year performance period ending in fiscal 2020 is based on our diluted EPS CAGR, subject to certain adjustments, measured over the defined performance period. In addition, for certain participants, all performance shares for the 2020 performance period are subject to an overarching EPS goal that must be met in each fiscal year of the 2020 performance period before any pay out can be made to such participants on the performance shares. Awards, if earned, will be paid in shares of our common stock. Subject to limited exceptions set forth in the performance share plan, any shares earned will be distributed after the end of the performance period, and only if the participant continues to be employed with the Company through the date of distribution. For awards where performance against the performance target has not been certified, the value of the performance shares is adjusted based upon the market price of our common stock and current forecasted performance against the performance targets at the end of each reporting period and amortized as compensation expense over the vesting period. Forfeitures are accounted for as they occur. A summary of the activity for performance share awards as of May 27, 2018 and changes during the fiscal year then ended is presented below: Performance Shares Share Units (in Millions) Weighted Average Grant-Date Fair Value Nonvested performance shares at May 28, 2017 0.86 $ 29.23 Granted 0.48 $ 33.82 Adjustments for performance results attained and dividend equivalents 0.01 $ 22.98 Vested/Issued (0.33 ) $ 24.08 Forfeited (0.02 ) $ 33.69 Nonvested performance shares at May 27, 2018 1.00 $ 33.40 The compensation expense for our performance share awards totaled $11.8 million , $13.3 million , and $14.2 million for fiscal 2018 , 2017 , and 2016 , respectively. The tax benefit related to the compensation expense for fiscal 2018 , 2017 , and 2016 was $3.9 million , $5.1 million , and $5.4 million , respectively. The total intrinsic value of share units vested (including shares paid in lieu of dividends) during fiscal 2018 , 2017 , and 2016 was $11.2 million , $2.8 million , and $12.7 million , respectively. Based on estimates at May 27, 2018 , the Company had $15.6 million of total unrecognized compensation expense related to performance shares that will be recognized over a weighted average period of 1.8 years . Stock Option Plan We have stockholder-approved stock option plans that provide for granting of options to employees for the purchase of common stock at prices equal to the fair value at the date of grant. Options become exercisable under various vesting schedules (typically three years ) and generally expire seven to ten years after the date of grant. No options were granted in fiscal 2018. The fair value of each option is estimated on the date of grant using a Black-Scholes option-pricing model with the following weighted average assumptions for stock options granted: 2017 2016 Expected volatility (%) 19.15 17.88 Dividend yield (%) 2.33 2.74 Risk-free interest rates (%) 1.03 1.60 Expected life of stock option (years) 4.94 4.96 The expected volatility is based on the historical market volatility of our stock over the expected life of the stock options granted. The expected life represents the period of time that the awards are expected to be outstanding and is based on the contractual term of each instrument, taking into account employees' historical exercise and termination behavior. A summary of the option activity as of May 27, 2018 and changes during the fiscal year then ended is presented below: Options Number of Options (in Millions) Weighted Average Exercise Price Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (in Millions) Outstanding at May 28, 2017 6.3 $ 27.12 Exercised (1.1 ) $ 22.28 $ 15.8 Forfeited (0.1 ) $ 34.78 Outstanding at May 27, 2018 5.1 $ 28.11 5.76 $ 47.6 Exercisable at May 27, 2018 4.0 $ 26.34 5.14 $ 44.4 We recognize compensation expense using the straight-line method over the requisite service period, accounting for forfeitures as they occur. During fiscal 2017 and 2016 , the Company granted 1.1 million options and 1.6 million options, respectively, with a weighted average grant date value of $6.12 and $5.08 , respectively. The total intrinsic value of options exercised was $15.8 million , $29.8 million , and $165.6 million for fiscal 2018 , 2017 , and 2016 , respectively. The closing market price of our common stock on the last trading day of fiscal 2018 was $37.41 per share. Compensation expense for stock option awards totaled $4.2 million , $6.2 million , and $9.4 million for fiscal 2018 , 2017 , and 2016 , respectively, including discontinued operations of $0.2 million and $0.8 million for fiscal 2017 and 2016, respectively. Included in the compensation expense for stock option awards for fiscal 2018 , 2017 , and 2016 was $0.4 million , $0.9 million , and $1.0 million , respectively, related to stock options granted by a subsidiary in the subsidiary's shares to the subsidiary's employees. The tax benefit related to the stock option expense for fiscal 2018 , 2017 , and 2016 was $1.4 million , $2.4 million , and $3.6 million , respectively. At May 27, 2018 , we had $2.3 million of total unrecognized compensation expense related to stock options that will be recognized over a weighted average period of 0.9 years . Cash received from option exercises for the fiscal years ended May 27, 2018 , May 28, 2017 , and May 29, 2016 was $25.1 million , $84.4 million , and $228.7 million , respectively. The actual tax benefit realized for the tax deductions from option exercises totaled $5.3 million , $19.5 million , and $57.3 million for fiscal 2018 , 2017 , and 2016 , respectively.

PRE-TAX INCOME AND INCOME TAXES

PRE-TAX INCOME AND INCOME TAXES	12 Months Ended
	May 27, 2018
Income Tax Disclosure [Abstract]
PRE-TAX INCOME AND INCOME TAXES	PRE-TAX INCOME AND INCOME TAXES The Tax Cuts and Jobs Act of 2017 (the "Tax Act") was enacted into law on December 22, 2017. The changes to U.S. tax law include, but are not limited to, (1) reducing the federal statutory income tax rate from 35% to 21%; (2) requiring companies to pay a one-time transition tax on certain unrepatriated earnings of foreign subsidiaries; (3) repealing the exception for deductibility of performance-based compensation to covered employees, along with expanding the number of covered employees; and (4) allowing immediate expensing of machinery and equipment contracted for purchase after September 27, 2017. The Tax Act also establishes new tax provisions that will affect our fiscal year 2019, including, but not limited to, (1) eliminating the deduction for domestic manufacturing activities; (2) generally eliminating U.S. federal income taxes on dividends from foreign subsidiaries; (3) establishing a new minimum tax on Global Intangible Low-Taxed Income ("GILTI"), a new Base Erosion Anti-Abuse Tax, and a new U.S. corporate deduction for Foreign-Derived Intangible Income. On December 22, 2017, the U.S. Securities and Exchange Commission released Staff Accounting Bulletin ("SAB") 118, which allows for a measurement period up to one year after the enactment date of the Tax Act to finalize related income tax impacts. Although our accounting for the impact of the Tax Act is incomplete, we have made reasonable estimates and recorded provisional amounts for items impacted including, among others, the following: • We remeasured deferred tax assets and liabilities based on the rates at which they are expected to reverse and recorded a provisional net benefit of $241.6 million . In addition, as a result of the Tax Act we recorded a provisional benefit of $3.2 million related to the release of valuation allowance against certain deferred tax assets that are more likely than not to be realized. The release of valuation allowance was refined by a $0.5 million increase as of May 27, 2018 from our initial estimate made in our third quarter of fiscal 2018 in accordance with SAB 118. • We computed a provisional tax of approximately $19.8 million related to the application of the one-time transition tax on the net accumulated post-1986 earnings and profits of foreign subsidiaries. The transition tax was refined by a $4.6 million increase as of May 27, 2018 from our initial estimate made in our third quarter of fiscal 2018 in accordance with SAB 118. We have not yet completed our analysis of the GILTI tax rules and are still evaluating whether to make a policy election to treat the GILTI tax as a period expense or to provide U.S. deferred taxes on certain foreign differences between the financial statement and tax basis of foreign assets and liabilities. At May 27, 2018, we did not record a deferred tax liability for these differences. We will continue to analyze the impact of GILTI as more guidance is issued and a decision will be made during fiscal year 2019 on whether to treat the GILTI as a period cost or a deferred tax item. As a result of our fiscal year end, the lower U.S. statutory federal income tax rate resulted in a blended U.S. federal statutory rate of 29.3% for our fiscal year ending May 27, 2018. It is expected to be 21% for fiscal years beginning after May 27, 2018. Pre-tax income from continuing operations (including equity method investment earnings) consisted of the following: 2018 2017 2016 United States $ 902.5 $ 883.5 $ 136.9 Foreign 69.6 (82.8 ) 38.0 $ 972.1 $ 800.7 $ 174.9 The provision for income taxes included the following: 2018 2017 2016 Current Federal $ 153.1 $ 201.5 $ 206.5 State 17.8 6.7 31.0 Foreign 32.5 6.5 8.6 203.4 214.7 246.1 Deferred Federal (43.7 ) 62.1 (161.5 ) State 17.4 (5.3 ) (38.9 ) Foreign (2.5 ) (16.8 ) 0.7 (28.8 ) 40.0 (199.7 ) $ 174.6 $ 254.7 $ 46.4 Income taxes computed by applying the U.S. Federal statutory rates to income from continuing operations before income taxes are reconciled to the provision for income taxes set forth in the Consolidated Statements of Operations as follows: 2018 2017 2016 Computed U.S. Federal income taxes $ 285.3 $ 280.2 $ 61.2 State income taxes, net of U.S. Federal tax impact 18.0 22.4 (6.4 ) Remeasurement of U.S. deferred taxes (241.6 ) — — Transition tax on foreign earnings 19.8 — — Tax credits and domestic manufacturing deduction (20.6 ) (19.8 ) (16.5 ) Federal rate differential on legal reserve 12.6 — — Goodwill and intangible impairments — 104.7 — Stock compensation (5.7 ) (18.8 ) — Change of valuation allowance on capital loss carryforward 78.6 (84.1 ) — Change in estimate related to tax methods used for certain international sales, federal credits, and state credits — (8.0 ) 6.0 Other 28.2 (21.9 ) 2.1 $ 174.6 $ 254.7 $ 46.4 Income taxes paid, net of refunds, were $164.1 million , $213.0 million , and $291.3 million in fiscal 2018 , 2017 , and 2016 , respectively. The tax effect of temporary differences and carryforwards that give rise to significant portions of deferred tax assets and liabilities consisted of the following: May 27, 2018 May 28, 2017 Assets Liabilities Assets Liabilities Property, plant and equipment $ — $ 141.0 $ — $ 216.6 Goodwill, trademarks and other intangible assets — 406.2 — 623.4 Accrued expenses 15.5 — 20.2 — Compensation related liabilities 34.1 — 63.9 — Pension and other postretirement benefits 45.8 — 275.2 — Investment in unconsolidated subsidiaries — 165.8 — 237.8 Other liabilities that will give rise to future tax deductions 109.7 — 117.9 — Net capital and operating loss carryforwards 762.5 — 1,112.5 — Other 26.3 6.1 60.0 6.3 993.9 719.1 1,649.7 1,084.1 Less: Valuation allowance (739.6 ) — (1,013.4 ) — Net deferred taxes $ 254.3 $ 719.1 $ 636.3 $ 1,084.1 The liability for gross unrecognized tax benefits at May 27, 2018 was $32.5 million , excluding a related liability of $7.7 million for gross interest and penalties. Any associated interest and penalties imposed would affect the tax rate. As of May 28, 2017, our gross liability for unrecognized tax benefits was $39.3 million , excluding a related liability of $6.0 million for gross interest and penalties. Interest and penalties recognized in the Consolidated Statements of Operations was an expense of $1.6 million in fiscal 2018, a benefit of $0.3 million in fiscal 2017, and a benefit of $0.2 million in fiscal 2016. The net amount of unrecognized tax benefits at May 27, 2018 and May 28, 2017 that, if recognized, would favorably impact our effective tax rate was $27.8 million and $31.6 million , respectively. We accrue interest and penalties associated with uncertain tax positions as part of income tax expense. We conduct business and file tax returns in numerous countries, states, and local jurisdictions. The U.S. Internal Revenue Service ("IRS") has completed its audit for tax years through fiscal 2015 and all resulting significant items for fiscal 2015 and prior years have been settled with the IRS. Other major jurisdictions where we conduct business generally have statutes of limitations ranging from three to five years. We estimate that it is reasonably possible that the amount of gross unrecognized tax benefits will decrease by up to $15.3 million over the next twelve months due to various Federal, state, and foreign audit settlements and the expiration of statutes of limitations. Of this amount, approximately $6.7 million would reverse through results of discontinued operations. The change in the unrecognized tax benefits for the year ended May 27, 2018 was: Beginning balance on May 28, 2017 $ 39.3 Increases from positions established during prior periods 14.5 Decreases from positions established during prior periods (11.5 ) Increases from positions established during the current period 3.5 Decreases relating to settlements with taxing authorities (10.3 ) Reductions resulting from lapse of applicable statute of limitation (2.9 ) Other adjustments to liability (0.1 ) Ending balance on May 27, 2018 $ 32.5 We have approximately $27.5 million of foreign net operating loss carryforwards ( $10.7 million will expire between fiscal 2019 and 2039 and $16.8 million have no expiration dates) and $19.4 million of Federal net operating loss carryforwards which expire in fiscal 2037. Federal capital loss carryforwards related to the Private Brands divestiture of approximately $2.8 billion will expire in fiscal 2021. Included in net deferred tax liabilities are $35.7 million of tax effected state net operating loss carryforwards which expire in various years ranging from fiscal 2019 to 2028 and $173.7 million of tax effected state capital loss carryforwards related to the divestiture of Private Brands, the vast majority of which expire in fiscal 2021. Foreign tax credits of $1.0 million will expire between fiscal 2025 and fiscal 2028. State tax credits of approximately $10.1 million will expire in various years ranging from fiscal 2019 to 2028. We have recognized a valuation allowance for the portion of the net operating loss carryforwards, capital loss carryforwards, tax credit carryforwards, and other deferred tax assets we believe are not more likely than not to be realized. The net change in the valuation allowance for fiscal 2018 was a decrease of $273.8 million . For fiscal 2017 and 2016 , changes in the valuation allowance were a decrease of $420.1 million and an increase of $1.4 billion , respectively. The current year change principally relates to remeasurement of deferred tax assets and corresponding valuation allowances due to tax reform and an adjustment to the valuation allowance on capital loss due to the termination of the sales agreement for the Wesson ® oil business. Historically, we have not provided U.S. deferred taxes on the cumulative undistributed earnings of our foreign subsidiaries. During fiscal 2018, we determined that previously undistributed earnings of certain foreign subsidiaries no longer meet the requirements for indefinite reinvestment under applicable accounting guidance and, therefore, recognized $5.9 million of income tax expense in fiscal 2018. We continue to believe the remaining undistributed earnings of our foreign subsidiaries are indefinitely reinvested and therefore have not provided any additional U.S. deferred taxes. It is not practicable to estimate the amount of U.S. income taxes that would be incurred in the event that we were to repatriate all the cumulative earnings of non-U.S. affiliates and associated companies. Accordingly, deferred taxes will be provided for earnings of non-U.S. affiliates and associated companies when we determine that such earnings are no longer indefinitely reinvested.

LEASES

LEASES	12 Months Ended
	May 27, 2018
Leases [Abstract]
LEASES	LEASES We lease certain facilities, land, and transportation equipment under agreements that expire at various dates. Rent expense under all operating leases from continuing operations was $62.5 million , $71.2 million , and $77.4 million in fiscal 2018 , 2017 , and 2016 , respectively. These amounts are inclusive of certain charges recognized at the cease-use date for remaining lease payments associated with exited properties. A summary of non-cancellable operating lease commitments for fiscal years following May 27, 2018 , was as follows: 2019 $ 35.6 2020 25.2 2021 22.3 2022 17.9 2023 15.8 Later years 82.3 $ 199.1 At May 27, 2018 and May 28, 2017, assets under capital and financing leases totaling $82.9 million , net of accumulated depreciation of $32.1 million , and $119.5 million , net of $47.7 million of accumulated depreciation, respectively, were included in Property, plant and equipment. Charges resulting from the depreciation of assets held under capital and financing leases are recognized within depreciation expense in the Consolidated Statements of Operations. Non-cash issuances of capital and financing lease obligations totaling $1.3 million , $0.5 million , and $103.3 million , are excluded from cash flows from investing and financing activities on the Consolidated Statements of Cash Flows for fiscal 2018, 2017, and 2016, respectively.

CONTINGENCIES

CONTINGENCIES	12 Months Ended
	May 27, 2018
Commitments and Contingencies Disclosure [Abstract]
CONTINGENCIES	CONTINGENCIES Litigation Matters We are a party to certain litigation matters relating to our acquisition of Beatrice Company ("Beatrice") in fiscal 1991, including litigation proceedings related to businesses divested by Beatrice prior to our acquisition of the company. These proceedings include suits against a number of lead paint and pigment manufacturers, including ConAgra Grocery Products Company, LLC, a wholly owned subsidiary of the Company ("ConAgra Grocery Products") as alleged successor to W. P. Fuller & Co., a lead paint and pigment manufacturer owned and operated by a predecessor to Beatrice from 1962 until 1967. These lawsuits generally seek damages for personal injury, property damage, economic loss, and governmental expenditures allegedly caused by the use of lead-based paint, and/or injunctive relief for inspection and abatement. Although decisions favorable to us have been rendered in Rhode Island, New Jersey, Wisconsin, and Ohio, we remain a defendant in active suits in Illinois and California. ConAgra Grocery Products has denied liability in both suits, both on the merits of the claims and on the basis that we do not believe it to be the successor to any liability attributable to W. P. Fuller & Co. The California suit is discussed in the following paragraph. The Illinois suit seeks class-wide relief for reimbursement of costs associated with the testing of lead levels in blood. We do not believe it is probable that we have incurred any liability with respect to the Illinois case, nor is it possible to estimate any potential exposure. In California, a number of cities and counties joined in a consolidated action seeking abatement of an alleged public nuisance in the form of lead-based paint potentially present on the interior of residences, regardless of its condition. On September 23, 2013, a trial of the California case concluded in the Superior Court of California for the County of Santa Clara, and on January 27, 2014, the court entered a judgment (the "Judgment") against ConAgra Grocery Products and two other defendants ordering the creation of a California abatement fund in the amount of $1.15 billion . Liability is joint and several. The Company appealed the Judgment, and on November 14, 2017 the California Court of Appeal for the Sixth Appellate District reversed in part, holding that the defendants were not liable to pay for abatement of homes built after 1950, but affirmed the Judgment as to homes built before 1951. The Court of Appeal remanded the case to the trial court with directions to recalculate the amount of the abatement fund estimated to be necessary to cover the cost of remediating pre-1951 homes, and to hold an evidentiary hearing regarding appointment of a suitable receiver. ConAgra Grocery Products and the other defendants petitioned the California Supreme Court for review of the decision, which we believe to be an unprecedented expansion of current California law. On February 14, 2018, the California Supreme Court denied the petition and declined to review the merits of the case, and the case was remanded to the trial court for further proceedings. ConAgra Grocery Products and the other defendants have indicated that they will seek further review of certain issues from the Supreme Court of the United States, although further appeal is discretionary and may not be granted. Further proceedings in the trial court may not be stayed pending the outcome of any further appeal. In light of the decision rendered by the California Appellate Court on November 14, 2017, and the California Supreme Court's decision on February 14, 2018 not to review the Appellate Court's decision, we have concluded that the liability has likely become probable as contemplated by Accounting Standards Codification Topic 450, however many uncertainties remain which make it difficult to estimate the potential liability, including the following: (i) the trial court has not yet recalculated its estimate of the amount needed to remediate pre-1951 homes in the plaintiff jurisdictions or entered a new judgment to replace the one vacated by the California Appellate Court; (ii) although liability is joint and several, it is unknown what amount each defendant may ultimately be required to pay or how allocation among the defendants (and other potentially responsible parties such as property owners who may have violated the applicable housing codes) will be determined; (iii) according to the trial court's original order, participation in the abatement program by eligible homeowners is voluntary and it is unknown what percentage of eligible homeowners will choose to participate or how such claims will be administered; (iv) the trial court's original order required that any amounts paid by the defendants into the fund that were not spent within four years would be returned to the defendants, and it is unknown whether this feature of the fund will be retained or, if it is retained, how much will be spent during that time period; and (v) defendants will have a new right to appeal any new aspects of the judgment entered by the trial court upon remand, although it is unknown whether the court would stay execution of any new judgment while a subsequent appeal is pending. To assist the trial court in satisfying its responsibilities, during our fourth quarter of fiscal 2018, the defendants and plaintiff each submitted information to the court regarding recalculation of the abatement fund. In addition, one of the defendants entered into a proposed settlement with the plaintiff, contingent upon a judicial good faith determination under California law. We are uncertain as to when the court will make a ruling on a recalculated abatement fund or the proposed settlement. Notwithstanding the uncertainties described above, this additional information was used by the Company in concluding that a loss is now reasonably estimable. While the ultimate amount of any loss and timing of payments related thereto remain uncertain and could change as further information is obtained, we believe that our share of the loss could range from $60 million to $335 million and have recorded a liability for the amount in that range that we believe is a better estimate than the low or high ends of the range. The extent of insurance coverage is uncertain and the Company's carriers are on notice; however, any possible insurance recovery has not been considered for purposes of determining our liability. We cannot assure that the final resolution of these matters will not have a material adverse effect on its financial condition, results of operations, or liquidity. In June 2009, an accidental explosion occurred at our manufacturing facility in Garner, North Carolina. This facility was the primary production facility for our Slim Jim ® branded meat snacks. In June 2009, the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives announced its determination that the explosion was the result of an accidental natural gas release and not a deliberate act. During the fourth quarter of fiscal 2011, we settled our property and business interruption claims related to the Garner accident with our insurance providers. During the fourth quarter of fiscal 2011, Jacobs Engineering Group Inc. ("Jacobs"), our engineer and project manager at the site, filed a declaratory judgment action against us seeking indemnity for personal injury claims brought against it as a result of the accident. During the first quarter of fiscal 2012, our motion for summary judgment was granted and the suit was dismissed without prejudice on the basis that the suit was filed prematurely. In the third quarter of fiscal 2014, Jacobs refiled its action seeking indemnity. On March 25, 2016, a Douglas County jury in Nebraska rendered a verdict in favor of Jacobs and against us in the amount of $108.9 million plus post-judgment interest. We filed our Notice of Appeal in September 2016, the appeal was heard by the Nebraska Supreme Court in November 2017, and the case is awaiting decision by the Nebraska Supreme Court. The appeal will be decided directly by the Nebraska Supreme Court. Although our insurance carriers have provided customary notices of reservation of their rights under the policies of insurance, we expect any ultimate exposure in this case to be limited to the applicable insurance deductible. We are party to a number of putative class action lawsuits challenging various product claims made in the Company's product labeling. These matters include Briseno v. ConAgra Foods, Inc., in which it is alleged that the labeling for Wesson ® oils as 100% natural is false and misleading because the oils contain genetically modified plants and organisms. In February 2015, the U.S. District Court for the Central District of California granted class certification to permit plaintiffs to pursue state law claims. The Company appealed to the United States Court of Appeals for the Ninth Circuit, which affirmed class certification in January 2017. The Supreme Court of the United States declined to review the decision and the case has been remanded to the trial court for further proceedings. While we cannot predict with certainty the results of this or any other legal proceeding, we do not expect this matter to have a material adverse effect on our financial condition, results of operations, or business. We are party to matters challenging the Company's wage and hour practices. These matters include a number of putative class actions consolidated under the caption Negrete v. ConAgra Foods, Inc., et al, pending in the U.S. District Court for the Central District of California, in which the plaintiffs allege a pattern of violations of California and/or federal law at several current and former Company manufacturing facilities across the State of California. While we cannot predict with certainty the results of this or any other legal proceeding, we do not expect this matter to have a material adverse effect on our financial condition, results of operations, or business. In the fourth quarter of fiscal 2018, we accrued $151.0 million in new legal reserves relating to the matters set forth above. Environmental Matters We are a party to certain environmental proceedings relating to our acquisition of Beatrice in fiscal 1991. Such proceedings include proceedings related to businesses divested by Beatrice prior to our acquisition of Beatrice. The current environmental proceedings associated with Beatrice include litigation and administrative proceedings involving Beatrice's possible status as a potentially responsible party at approximately 40 Superfund, proposed Superfund, or state-equivalent sites (the "Beatrice sites"). These sites involve locations previously owned or operated by predecessors of Beatrice that used or produced petroleum, pesticides, fertilizers, dyes, inks, solvents, PCBs, acids, lead, sulfur, tannery wastes, and/or other contaminants. In the past five years, Beatrice has paid or is in the process of paying its liability share at 31 of these sites. Reserves for these Beatrice environmental proceedings have been established based on our best estimate of the undiscounted remediation liabilities, which estimates include evaluation of investigatory studies, extent of required clean-up, the known volumetric contribution of Beatrice and other potentially responsible parties, and its experience in remediating sites. The accrual for Beatrice-related environmental matters totaled $52.4 million as of May 27, 2018 , a majority of which relates to the Superfund and state-equivalent sites referenced above. During the third quarter of fiscal 2017, a final Remedial Investigation/Feasibility Study was submitted for the Southwest Properties portion of the Wells G&H Superfund site, which is one of the Beatrice sites. The U.S. Environmental Protection Agency (the "EPA") issued a Record of Decision (the "ROD") for the Southwest Properties portion of the site on September 29, 2017, and has entered into negotiations with potentially responsible parties to determine final responsibility for implementing the ROD. Guarantees and Other Contingencies In certain limited situations, we guarantee obligations of the Lamb Weston business pursuant to guarantee arrangements that existed prior to the Spinoff and remained in place following completion of the Spinoff until such guarantee obligations are substituted for guarantees issued by Lamb Weston. Such guarantee arrangements are described below. Pursuant to the Separation and Distribution Agreement, dated as of November 8, 2016 (the "Separation Agreement"), between us and Lamb Weston, these guarantee arrangements are deemed liabilities of Lamb Weston that were transferred to Lamb Weston as part of the Spinoff. Accordingly, in the event that we are required to make any payments as a result of these guarantee arrangements, Lamb Weston is obligated to indemnify us for any such liability, reduced by any insurance proceeds received by us, in accordance with the terms of the indemnification provisions under the Separation Agreement. Lamb Weston is a party to a warehouse services agreement with a third-party warehouse provider through July 2035. Under this agreement, Lamb Weston is required to make payments for warehouse services based on the quantity of goods stored and other service factors. We have guaranteed the warehouse provider that we will make the payments required under the agreement in the event that Lamb Weston fails to perform. Minimum payments of $1.5 million per month are required under this agreement. It is not possible to determine the maximum amount of the payment obligations under this agreement. Upon completion of the Spinoff, we recognized a liability for the estimated fair value of this guarantee. As of May 27, 2018 , the amount of this guarantee, recorded in other noncurrent liabilities, was $28.1 million . Lamb Weston is a party to an agricultural sublease agreement with a third party for certain farmland through 2020 (subject, at Lamb Weston's option, to extension for two additional five -year periods). Under the terms of the sublease agreement, Lamb Weston is required to make certain rental payments to the sublessor. We have guaranteed the sublessor Lamb Weston's performance and the payment of all amounts (including indemnification obligations) owed by Lamb Weston under the sublease agreement, up to a maximum of $75.0 million . We believe the farmland associated with this sublease agreement is readily marketable for lease to other area farming operators. As such, we believe that any financial exposure to the company, in the event that we were required to perform under the guaranty, would be largely mitigated. We lease or leased certain office buildings from entities that we have determined to be variable interest entities. The lease agreements with these entities include fixed-price purchase options for the assets being leased. The lease agreements also contain contingent put options (the "lease put options") that allow or allowed the lessors to require us to purchase the buildings at the greater of original construction cost, or fair market value, without a lease agreement in place (the "put price") in certain limited circumstances. As a result of substantial impairment charges related to our divested Private Brands operations, these lease put options became exercisable. During fiscal 2016, we entered into a series of related transactions in which we exchanged a warehouse we owned in Indiana for two buildings and parcels of land that we leased as part of our Omaha corporate offices. Concurrent with the asset exchange, the leases on the two Omaha corporate buildings subject to contingent put options were canceled. We recognized aggregate charges of $55.6 million for the early termination of these leases. We also entered into a lease for the warehouse in Indiana and we recorded a financing lease obligation of $74.2 million . During fiscal 2017, one of these lease agreements expired. As a result of this expiration, we reversed the applicable accrual and recognized a benefit of $ 6.7 million in SG&A expenses. During the third quarter of fiscal 2018, we purchased two buildings that were subject to lease put options and recognized net losses totaling $48.2 million for the early exit of unfavorable lease contracts. As of May 27, 2018 , there was one remaining leased building subject to a lease put option for which the put option price exceeded the estimated fair value of the property by $8.2 million , of which we had accrued $1.2 million . We are amortizing the difference between the put price and the estimated fair value (without a lease agreement in place) of the property over the remaining lease term within SG&A expenses. This lease is accounted for as an operating lease, and accordingly, there are no material assets and liabilities, other than the accrued portion of the put price, associated with this entity included in the Consolidated Balance Sheets. We have determined that we do not have the power to direct the activities that most significantly impact the economic performance of this entity. In making this determination, we have considered, among other items, the terms of the lease agreement, the expected remaining useful life of the asset leased, and the capital structure of the lessor entity. General After taking into account liabilities recognized for all of the foregoing matters, management believes the ultimate resolution of such matters should not have a material adverse effect on our financial condition, results of operations, or liquidity; however, it is reasonably possible that a change of the estimates of any of the foregoing matters may occur in the future and, as noted, the lead paint matter could result in a material final judgment which could have a material adverse effect on our financial condition, results of operations, or liquidity. Costs of legal services associated with the foregoing matters are recognized in earnings as services are provided.

DERIVATIVE FINANCIAL INSTRUMENT

DERIVATIVE FINANCIAL INSTRUMENTS	12 Months Ended
	May 27, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS	DERIVATIVE FINANCIAL INSTRUMENTS Our operations are exposed to market risks from adverse changes in commodity prices affecting the cost of raw materials and energy, foreign currency exchange rates, and interest rates. In the normal course of business, these risks are managed through a variety of strategies, including the use of derivatives. Commodity and commodity index futures and option contracts are used from time to time to economically hedge commodity input prices on items such as natural gas, vegetable oils, proteins, packaging materials, dairy, grains, and electricity. Generally, we economically hedge a portion of our anticipated consumption of commodity inputs for periods of up to 36 months. We may enter into longer-term economic hedges on particular commodities, if deemed appropriate. As of May 27, 2018 , we had economically hedged certain portions of our anticipated consumption of commodity inputs using derivative instruments with expiration dates through March 2019. In order to reduce exposures related to changes in foreign currency exchange rates, we enter into forward exchange, option, or swap contracts from time to time for transactions denominated in a currency other than the applicable functional currency. This includes, but is not limited to, hedging against foreign currency risk in purchasing inventory and capital equipment, sales of finished goods, and future settlement of foreign-denominated assets and liabilities. As of May 27, 2018 , we had economically hedged certain portions of our foreign currency risk in anticipated transactions using derivative instruments with expiration dates through February 2019. From time to time, we may use derivative instruments, including interest rate swaps, to reduce risk related to changes in interest rates. This includes, but is not limited to, hedging against increasing interest rates prior to the issuance of long-term debt and hedging the fair value of our senior long-term debt. Economic Hedges of Forecasted Cash Flows Many of our derivatives do not qualify for, and we do not currently designate certain commodity or foreign currency derivatives to achieve, hedge accounting treatment. We reflect realized and unrealized gains and losses from derivatives used to economically hedge anticipated commodity consumption and to mitigate foreign currency cash flow risk in earnings immediately within general corporate expense (within cost of goods sold). The gains and losses are reclassified to segment operating results in the period in which the underlying item being economically hedged is recognized in cost of goods sold. In the event that management determines a particular derivative entered into as an economic hedge of a forecasted commodity purchase has ceased to function as an economic hedge, we cease recognizing further gains and losses on such derivatives in corporate expense and begin recognizing such gains and losses within segment operating results immediately. Economic Hedges of Fair Values — Foreign Currency Exchange Rate Risk We may use options and cross currency swaps to economically hedge the fair value of certain monetary assets and liabilities (including intercompany balances) denominated in a currency other than the functional currency. These derivatives are marked-to-market with gains and losses immediately recognized in SG&A expenses. These substantially offset the foreign currency transaction gains or losses recognized as values of the monetary assets or liabilities being economically hedged. All derivative instruments are recognized on the Consolidated Balance Sheets at fair value (refer to Note 20 for additional information related to fair value measurements). The fair value of derivative assets is recognized within prepaid expenses and other current assets, while the fair value of derivative liabilities is recognized within other accrued liabilities. In accordance with generally accepted accounting principles, we offset certain derivative asset and liability balances, as well as certain amounts representing rights to reclaim cash collateral and obligations to return cash collateral, where master netting agreements provide for legal right of setoff. At May 27, 2018 and May 28, 2017, $1.0 million , representing an obligation to return cash collateral, and $0.9 million , representing a right to reclaim cash collateral, respectively, were included in prepaid expenses and other current assets in our Consolidated Balance Sheets. Derivative assets and liabilities and amounts representing a right to reclaim cash collateral or obligation to return cash collateral were reflected in our Consolidated Balance Sheets as follows: May 27, 2018 May 28, 2017 Prepaid expenses and other current assets $ 4.4 $ 2.3 Other accrued liabilities 0.1 1.3 The following table presents our derivative assets and liabilities at May 27, 2018 , on a gross basis, prior to the setoff of $1.4 million to total derivative assets and $0.4 million to total derivative liabilities where legal right of setoff existed: Derivative Assets Derivative Liabilities Balance Sheet Location Fair Value Balance Sheet Location Fair Value Commodity contracts Prepaid expenses and other current assets $ 3.7 Other accrued liabilities $ 0.4 Foreign exchange contracts Prepaid expenses and other current assets 2.1 Other accrued liabilities — Other Prepaid expenses and other current assets — Other accrued liabilities 0.1 Total derivatives not designated as hedging instruments $ 5.8 $ 0.5 The following table presents our derivative assets and liabilities, at May 28, 2017 , on a gross basis, prior to the setoff of $0.5 million to total derivative assets and $1.4 million to total derivative liabilities where legal right of setoff existed: Derivative Assets Derivative Liabilities Balance Sheet Location Fair Value Balance Sheet Location Fair Value Commodity contracts Prepaid expenses and other current assets $ 2.6 Other accrued liabilities $ 1.4 Foreign exchange contracts Prepaid expenses and other current assets 0.2 Other accrued liabilities 1.1 Other Prepaid expenses and other current assets — Other accrued liabilities 0.2 Total derivatives not designated as hedging instruments $ 2.8 $ 2.7 The location and amount of gains (losses) from derivatives not designated as hedging instruments in our Consolidated Statements of Operations were as follows: For the Fiscal Year Ended May 27, 2018 Derivatives Not Designated as Hedging Instruments Location in Consolidated Statement of Operations of Gain (Loss) Recognized on Derivatives Amount of Gain (Loss) Recognized on Derivatives in Consolidated Statement of Operations Commodity contracts Cost of goods sold $ 3.0 Foreign exchange contracts Cost of goods sold (3.9 ) Foreign exchange contracts Selling, general and administrative expense 0.3 Total loss from derivative instruments not designated as hedging instruments $ (0.6 ) For the Fiscal Year Ended May 28, 2017 Derivatives Not Designated as Hedging Instruments Location in Consolidated Statement of Operations of Gain (Loss) Recognized on Derivatives Amount of Gain (Loss) Recognized on Derivatives in Consolidated Statement of Operations Commodity contracts Cost of goods sold $ 0.9 Foreign exchange contracts Cost of goods sold (0.3 ) Foreign exchange contracts Selling, general and administrative expense 0.2 Total gain from derivative instruments not designated as hedging instruments $ 0.8 For the Fiscal Year Ended May 29, 2016 Derivatives Not Designated as Hedging Instruments Location in Consolidated Statement of Operations of Gain (Loss) Recognized on Derivatives Amount of Gain (Loss) Recognized on Derivatives in Consolidated Statement of Operations Commodity contracts Cost of goods sold $ (8.1 ) Foreign exchange contracts Cost of goods sold 0.7 Foreign exchange contracts Selling, general and administrative expense 2.9 Total loss from derivative instruments not designated as hedging instruments $ (4.5 ) As of May 27, 2018 , our open commodity contracts had a notional value (defined as notional quantity times market value per notional quantity unit) of $100.0 million and $34.2 million for purchase and sales contracts, respectively. As of May 28, 2017 , our open commodity contracts had a notional value of $76.8 million and $73.4 million for purchase and sales contracts, respectively. The notional amount of our foreign currency forward and cross currency swap contracts as of May 27, 2018 and May 28, 2017 was $82.4 million and $81.9 million , respectively. We enter into certain commodity, interest rate, and foreign exchange derivatives with a diversified group of counterparties. We continually monitor our positions and the credit ratings of the counterparties involved and limit the amount of credit exposure to any one party. These transactions may expose us to potential losses due to the risk of nonperformance by these counterparties. We have not incurred a material loss due to nonperformance in any period presented and do not expect to incur any such material loss. We also enter into futures and options transactions through various regulated exchanges. At May 27, 2018 , the maximum amount of loss due to the credit risk of the counterparties, had the counterparties failed to perform according to the terms of the contracts, was $2.7 million .

PENSION AND POSTRETIREMENT BENE

PENSION AND POSTRETIREMENT BENEFITS	12 Months Ended
	May 27, 2018
Retirement Benefits [Abstract]
PENSION AND POSTRETIREMENT BENEFITS	PENSION AND POSTRETIREMENT BENEFITS We have defined benefit retirement plans ("plans") for eligible salaried and hourly employees. Benefits are based on years of credited service and average compensation or stated amounts for each year of service. We also sponsor postretirement plans which provide certain medical and dental benefits ("other postretirement benefits") to qualifying U.S. employees. Effective August 1, 2013, our defined benefit pension plan for eligible salaried employees was closed to new hire salaried employees. New hire salaried employees will generally be eligible to participate in our defined contribution plan. During the second quarter of fiscal 2018, we approved the amendment of our salaried and non-qualified pension plans effective as of December 31, 2017. The amendment froze the compensation and service periods used to calculate pension benefits for active employees who participate in the plans. Beginning January 1, 2018, impacted employees do not accrue additional benefit for future service and eligible compensation received under these plans. As a result of the amendment, we remeasured our pension plan liability as of September 30, 2017. In connection with the remeasurement, we updated the effective discount rate assumption from 3.90% to 3.78% . The curtailment and related remeasurement resulted in a net decrease to the underfunded status of the pension plans by $43.5 million with a corresponding benefit within other comprehensive income (loss) for the second quarter of fiscal 2018. In addition, we recorded charges of $3.4 million and $0.7 million reflecting the write-off of actuarial losses in excess of 10% of our pension liability and a curtailment charge, respectively. We recognize the funded status of our plans and other benefits in the Consolidated Balance Sheets. For our plans, we also recognize as a component of accumulated other comprehensive loss, the net of tax results of the actuarial gains or losses within the corridor and prior service costs or credits that arise during the period but are not recognized in net periodic benefit cost. For our other benefits, we also recognize as a component of accumulated other comprehensive income (loss), the net of tax results of the gains or losses and prior service costs or credits that arise during the period but are not recognized in net periodic benefit cost. These amounts will be adjusted out of accumulated other comprehensive income (loss) as they are subsequently recognized as components of net periodic benefit cost. For our pension plans, we have elected to immediately recognize actuarial gains and losses in our operating results in the year in which they occur, to the extent they exceed the corridor, eliminating amortization. Amounts are included in the components of pension benefit and other postretirement benefit costs, below, as recognized net actuarial loss. The information below includes the activities of our continuing and discontinued operations. The changes in benefit obligations and plan assets at May 27, 2018 and May 28, 2017 are presented in the following table. Pension Benefits Other Benefits 2018 2017 2018 2017 Change in Benefit Obligation Benefit obligation at beginning of year $ 3,548.7 $ 3,903.0 $ 156.9 $ 201.7 Service cost 42.8 56.9 0.2 0.3 Interest cost 111.1 116.8 3.9 4.6 Plan participants' contributions — — 4.7 4.7 Amendments 0.6 5.5 (17.2 ) — Actuarial gain (9.4 ) (51.5 ) (13.2 ) (32.0 ) Plan settlements (10.2 ) (287.5 ) — — Special termination benefits — 1.5 — — Curtailments (79.5 ) (18.1 ) — — Benefits paid (181.3 ) (169.7 ) (16.2 ) (19.0 ) Currency 0.8 (0.8 ) 0.2 (0.2 ) Business divestitures — (7.4 ) — (3.2 ) Benefit obligation at end of year $ 3,423.6 $ 3,548.7 $ 119.3 $ 156.9 Change in Plan Assets Fair value of plan assets at beginning of year $ 2,983.6 $ 2,959.4 $ — $ 0.1 Actual return on plan assets 276.1 346.1 3.7 — Employer contributions 312.6 163.0 11.5 14.2 Plan participants' contributions — — 4.7 4.7 Plan settlements (10.2 ) (287.5 ) — — Investment and administrative expenses (26.5 ) (26.7 ) — — Benefits paid (181.3 ) (169.7 ) (16.2 ) (19.0 ) Currency 0.8 (1.0 ) — — Fair value of plan assets at end of year $ 3,355.1 $ 2,983.6 $ 3.7 $ — The funded status and amounts recognized in our Consolidated Balance Sheets at May 27, 2018 and May 28, 2017 were: Pension Benefits Other Benefits 2018 2017 2018 2017 Funded Status $ (68.5 ) $ (565.1 ) $ (115.6 ) $ (156.9 ) Amounts Recognized in Consolidated Balance Sheets Other assets $ 103.0 $ 17.1 $ 2.6 $ — Other accrued liabilities (11.8 ) (10.9 ) (16.2 ) (18.4 ) Other noncurrent liabilities (159.7 ) (571.3 ) (102.0 ) (138.5 ) Net Amount Recognized $ (68.5 ) $ (565.1 ) $ (115.6 ) $ (156.9 ) Amounts Recognized in Accumulated Other Comprehensive (Income) Loss (Pre-tax) Actuarial net loss (gain) $ 48.8 $ 174.2 $ (25.8 ) $ (9.0 ) Net prior service cost (benefit) 13.8 16.0 (18.4 ) (4.6 ) Total $ 62.6 $ 190.2 $ (44.2 ) $ (13.6 ) Weighted-Average Actuarial Assumptions Used to Determine Benefit Obligations at May 27, 2018 and May 28, 2017 Discount rate 4.14 % 3.90 % 3.81 % 3.33 % Long-term rate of compensation increase N/A 3.63 % N/A N/A The accumulated benefit obligation for all defined benefit pension plans was $3.4 billion and $3.5 billion at May 27, 2018 and May 28, 2017 , respectively. The projected benefit obligation, accumulated benefit obligation, and fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets at May 27, 2018 and May 28, 2017 were: 2018 2017 Projected benefit obligation $ 951.1 $ 3,433.6 Accumulated benefit obligation 950.1 3,357.1 Fair value of plan assets 779.5 2,851.4 Components of pension benefit and other postretirement benefit costs included: Pension Benefits Other Benefits 2018 2017 2016 2018 2017 2016 Service cost $ 42.8 $ 56.9 $ 93.8 $ 0.2 $ 0.3 $ 0.4 Interest cost 111.1 116.8 159.8 3.9 4.6 7.5 Expected return on plan assets (218.3 ) (207.4 ) (259.9 ) — — — Amortization of prior service cost (benefit) 2.9 2.6 2.7 (3.4 ) (6.6 ) (7.8 ) Special termination benefits — 1.5 25.6 — — — Recognized net actuarial loss 3.4 1.2 348.5 — 0.5 0.1 Settlement loss 1.3 13.8 — — — — Curtailment loss 0.7 1.7 0.3 — — — Benefit cost — Company plans (56.1 ) (12.9 ) 370.8 0.7 (1.2 ) 0.2 Pension benefit cost — multi-employer plans 7.1 12.0 42.9 — — — Total benefit (income) cost $ (49.0 ) $ (0.9 ) $ 413.7 $ 0.7 $ (1.2 ) $ 0.2 As a result of the Spinoff, during fiscal 2017, we recorded a pension curtailment gain of $19.5 million within other comprehensive income (loss) and remeasured a significant qualified pension plan as of November 9, 2016. In connection with the remeasurement, we updated the effective discount rate assumption from 3.86% to 4.04% . The remeasurement and the curtailment gain decreased the underfunded status of the pension plans by $66.0 million with a corresponding benefit within other comprehensive income (loss). During fiscal 2017, we provided a voluntary lump-sum settlement offer to certain terminated vested participants in our salaried pension plan. Lump-sum settlement payments totaling $287.5 million were distributed from pension plan assets to such participants. Due to the pension settlement, we were required to remeasure our pension plan liability. In connection with the remeasurement, we updated the effective discount rate assumption to 4.11% , as of December 31, 2016 . The settlement and related remeasurement resulted in the recognition of a settlement charge of 13.8 million , reflected in SG&A expenses, as well as a benefit to accumulated other comprehensive income (loss) totaling $62.2 million . Special termination benefits granted in connection with the voluntary retirement program resulted in the recognition of $25.6 million of expense during fiscal 2016. This expense was included in restructuring activities. In fiscal 2018, 2017, and 2016, the Company recorded charges of $3.4 million , $1.2 million , and $348.5 million , respectively, reflecting the year-end write-off of actuarial losses in excess of 10% of our pension liability. The Company recorded an expense of $0.6 million (primarily within restructuring activities), $4.0 million ( $2.1 million was recorded in discontinued operations and $1.9 million was recorded in restructuring activities), and $31.8 million ( $2.0 million was recorded in discontinued operations and $29.8 million was recorded in restructuring activities) during fiscal 2018, 2017, and 2016, respectively, related to our expected incurrence of certain multi-employer plan withdrawal costs. Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) were: Pension Benefits Other Benefits 2018 2017 2018 2017 Net actuarial gain $ 120.0 $ 183.1 $ 16.8 $ 32.4 Amendments (0.6 ) (5.5 ) 17.2 (0.4 ) Amortization of prior service cost (benefit) 2.9 2.9 (3.4 ) (6.6 ) Settlement and curtailment loss 2.0 13.8 — — Recognized net actuarial loss 3.4 1.2 — 0.5 Net amount recognized $ 127.7 $ 195.5 $ 30.6 $ 25.9 Weighted-Average Actuarial Assumptions Used to Determine Net Expense Pension Benefits Other Benefits 2018 2017 2016 2018 2017 2016 Discount rate 3.90 % 3.83 % 4.10 % 3.33 % 3.18 % 3.50 % Long-term rate of return on plan assets 7.50 % 7.50 % 7.75 % N/A N/A N/A Long-term rate of compensation increase 3.63 % 3.66 % 3.70 % N/A N/A N/A Beginning in fiscal 2017, the Company has elected to use a split discount rate (spot-rate approach) for the U.S. plans and certain foreign plans. Historically, a single weighted-average discount rate was used in the calculation of service and interest costs, both of which are components of pension benefit costs. The spot-rate approach applies separate discount rates for each projected benefit payment in the calculation of pension service and interest cost. This change is considered a change in accounting estimate and has been applied prospectively. The pre-tax reduction in total pension benefit cost associated with this change in fiscal 2017 was approximately $27.0 million . We amortize prior service cost for our pension plans and postretirement plans, as well as amortizable gains and losses for our postretirement plans, in equal annual amounts over the average expected future period of vested service. For plans with no active participants, average life expectancy is used instead of average expected useful service. The amounts in accumulated other comprehensive income (loss) expected to be recognized as components of net expense during the next year are as follows: Pension Benefits Other Benefits Prior service cost (benefit) $ 2.9 $ (2.2 ) Net actuarial gain N/A (1.5 ) Plan Assets The fair value of plan assets, summarized by level within the fair value hierarchy described in Note 20, as of May 27, 2018 , was as follows: Level 1 Level 2 Level 3 Total Cash and cash equivalents $ 1.0 $ 65.0 $ — $ 66.0 Equity securities: U.S. equity securities 319.8 124.0 — 443.8 International equity securities 256.5 1.0 — 257.5 Fixed income securities: Government bonds — 1,854.8 — 1,854.8 Corporate bonds — 4.7 — 4.7 Mortgage-backed bonds — 9.3 — 9.3 Real estate funds 7.7 — — 7.7 Master limited partnerships 0.4 — — 0.4 Net payables for unsettled transactions 10.9 — — 10.9 Fair value measurement of pension plan assets in the fair value hierarchy $ 596.3 $ 2,058.8 $ — $ 2,655.1 Investments measured at net asset value 700.0 Total pension plan assets $ 3,355.1 The fair value of plan assets, summarized by level within the fair value hierarchy described in Note 20, as of May 28, 2017 , was as follows: Level 1 Level 2 Level 3 Total Cash and cash equivalents $ 1.0 $ 94.0 $ — $ 95.0 Equity securities: U.S. equity securities 494.0 13.7 — 507.7 International equity securities 249.9 13.2 — 263.1 Fixed income securities: Government bonds 51.1 224.3 — 275.4 Corporate bonds 4.4 279.5 — 283.9 Mortgage-backed bonds 63.3 6.2 — 69.5 Real estate funds 9.5 — — 9.5 Master limited partnerships 173.5 — — 173.5 Net receivables for unsettled transactions 0.7 — — 0.7 Fair value measurement of pension plan assets in the fair value hierarchy $ 1,047.4 $ 630.9 $ — $ 1,678.3 Investments measured at net asset value 1,305.3 Total pension plan assets $ 2,983.6 Level 1 assets are valued based on quoted prices in active markets for identical securities. The majority of the Level 1 assets listed above include the common stock of both U.S. and international companies, mutual funds, master limited partnership units, and real estate investment trusts, all of which are actively traded and priced in the market. Level 2 assets are valued based on other significant observable inputs including quoted prices for similar securities, yield curves, indices, etc. Level 2 assets consist primarily of individual fixed income securities where values are based on quoted prices of similar securities and observable market data. Level 3 assets consist of investments where active market pricing is not readily available and, as such, fair value is estimated using significant unobservable inputs. Certain assets that are measured at fair value using the NAV (net asset value) per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. Such investments are generally considered long-term in nature with varying redemption availability. For certain of these investments, with a fair value of approximately $487.2 million as of May 27, 2018 , the asset managers have the ability to impose customary redemption gates which may further restrict or limit the redemption of invested funds therein. As of May 27, 2018 , funds with a fair value of $0.1 million have imposed such gates. As of May 27, 2018 , we have unfunded commitments for additional investments of $65.4 million in private equity funds and $26.7 million in natural resources funds. We expect unfunded commitments to be funded from plan assets rather than the general assets of the Company. To develop the expected long-term rate of return on plan assets assumption for the pension plans, we consider the current asset allocation strategy, the historical investment performance, and the expectations for future returns of each asset class. Our pension plan weighted-average asset allocations by asset category were as follows: May 27, 2018 May 28, 2017 Equity securities 21 % 39 % Debt securities 58 % 25 % Real estate funds 10 % 11 % Multi-strategy hedge funds 4 % 11 % Private equity 4 % 4 % Other 3 % 10 % Total 100 % 100 % Due to the salaried pension plan freeze, the Company's pension asset strategy is now designed to align our pension plan assets with our projected benefit obligation to reduce volatility by targeting an investment strategy of approximately 90% in fixed-income securities and approximately 10% in return seeking assets, primarily equity securities, real estate, and private assets. Other investments are primarily made up of cash and master limited partnerships. Assumed health care cost trend rates have a significant effect on the benefit obligation of the postretirement plans. Assumed Health Care Cost Trend Rates at: May 27, 2018 May 28, 2017 Initial health care cost trend rate 7.87 % 8.44 % Ultimate health care cost trend rate 4.5 % 4.5 % Year that the rate reaches the ultimate trend rate 2024 2024 A one percentage point change in assumed health care cost rates would have the following effect: One Percent Increase One Percent Decrease Effect on total service and interest cost $ 0.3 $ (0.3 ) Effect on postretirement benefit obligation 3.9 (3.5 ) We currently anticipate making contributions of approximately $19.6 million to our pension plans in fiscal 2019 . We anticipate making contributions of $16.2 million to our other postretirement plans in fiscal 2019 . These estimates are based on ERISA guidelines, current tax laws, plan asset performance, and liability assumptions, which are subject to change. The following table presents estimated future gross benefit payments for our plans: Pension Benefits Health Care and Life Insurance Benefits 2019 $ 188.7 $ 16.4 2020 184.2 14.7 2021 186.5 13.4 2022 189.0 12.1 2023 191.3 11.0 Succeeding 5 years 980.7 40.1 Multiemployer Pension Plans The Company contributes to several multiemployer defined benefit pension plans under collective bargaining agreements that cover certain of its union-represented employees. The risks of participating in such plans are different from the risks of single-employer plans, in the following respects: a. Assets contributed to a multiemployer plan by one employer may be used to provide benefits to employees of other participating employers. b. If a participating employer ceases to contribute to the plan, the unfunded obligations of the plan may be borne by the remaining participating employers. c. If the Company ceases to have an obligation to contribute to a multiemployer plan in which it had been a contributing employer, it may be required to pay to the plan an amount based on the underfunded status of the plan and on the history of the Company's participation in the plan prior to the cessation of its obligation to contribute. The amount that an employer that has ceased to have an obligation to contribute to a multiemployer plan is required to pay to the plan is referred to as a withdrawal liability. The Company's participation in multiemployer plans for the fiscal year ended May 27, 2018 is outlined in the table below. For each plan that is individually significant to the Company the following information is provided: • The "EIN / PN" column provides the Employer Identification Number and the three-digit plan number assigned to a plan by the Internal Revenue Service. • The most recent Pension Protection Act Zone Status available for 2017 and 2016 is for plan years that ended in calendar years 2017 and 2016, respectively. The zone status is based on information provided to the Company by each plan. A plan in the "red" zone has been determined to be in "critical status", based on criteria established under the Internal Revenue Code ("Code"), and is generally less than 65% funded. A plan in the "yellow" zone has been determined to be in "endangered status", based on criteria established under the Code, and is generally less than 80% funded. A plan in the "green" zone has been determined to be neither in "critical status" nor in "endangered status", and is generally at least 80% funded. • The "FIP/RP Status Pending/Implemented" column indicates whether a Funding Improvement Plan, as required under the Code to be adopted by plans in the "yellow" zone, or a Rehabilitation Plan, as required under the Code to be adopted by plans in the "red" zone, is pending or has been implemented by the plan as of the end of the plan year that ended in calendar year 2017. • Contributions by the Company are the amounts contributed in the Company's fiscal periods ending in the specified year. • The "Surcharge Imposed" column indicates whether the Company contribution rate for its fiscal year that ended on May 27, 2018 included an amount in addition to the contribution rate specified in the applicable collective bargaining agreement, as imposed by a plan in "critical status", in accordance with the requirements of the Code. • The last column lists the expiration dates of the collective bargaining agreements pursuant to which the Company contributes to the plans. For plans that are not individually significant to Conagra Brands the total amount of contributions is presented in the aggregate. Pension Protection Act Zone Status FIP / Contributions by the Company (millions) Expiration Dates of Collective Bargaining Agreements Pension Fund EIN / PN 2017 2016 FY18 FY17 FY16 Surcharge Imposed Bakery and Confectionary Union and Industry International Pension Plan 52-6118572 Red, Critical and Declining Red, Critical and Declining RP Implemented $ 1.5 $ 1.8 $3.1 No 2/28/2020 Central States, Southeast and Southwest Areas Pension Fund 36-6044243 Red, Critical and Declining Red RP Implemented 1.8 1.8 1.9 No 5/31/2020 Western Conference of Teamsters Pension Plan 91-6145047 Green Green N/A 2.8 4.0 5.4 No 06/30/2018 Other Plans 0.4 0.4 0.7 Total Contributions $ 6.5 $8.0 $11.1 The Company was not listed in the Forms 5500 filed by any of the other plans or for any of the other years as providing more than 5% of the plan's total contributions. At the date our financial statements were issued, Forms 5500 were not available for plan years ending in calendar year 2017 . On May 31, 2018, subsequent to the end of fiscal 2018 , we ceased to participate in the Bakery and Confectionary Union and Industry International Fund in conjunction with our sale of the Trenton, Missouri plant. In addition to the contributions listed in the table above, we recorded an additional expense of $0.6 million , $4.0 million , and $31.8 million in fiscal 2018 , 2017 , and 2016 , respectively, related to our expected incurrence of certain withdrawal costs. Certain of our employees are covered under defined contribution plans. The expense related to these plans was $24.5 million , $18.0 million , and $35.4 million in fiscal 2018 , 2017 , and 2016 , respectively.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	12 Months Ended
	May 27, 2018
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS FASB guidance establishes a three-level fair value hierarchy based upon the assumptions (inputs) used to price assets or liabilities. The three levels of inputs used to measure fair value are as follows: Level 1 — Unadjusted quoted prices in active markets for identical assets or liabilities, Level 2 — Observable inputs other than those included in Level 1, such as quoted prices for similar assets and liabilities in active markets or quoted prices for identical assets or liabilities in inactive markets, and Level 3 — Unobservable inputs reflecting our own assumptions and best estimate of what inputs market participants would use in pricing the asset or liability. The fair values of our Level 2 derivative instruments were determined using valuation models that use market observable inputs including interest rate curves and both forward and spot prices for currencies and commodities. Derivative assets and liabilities included in Level 2 primarily represent commodity and foreign currency option and forward contracts and cross-currency swaps. The following table presents our financial assets and liabilities measured at fair value on a recurring basis based upon the level within the fair value hierarchy in which the fair value measurements fall, as of May 27, 2018 : Level 1 Level 2 Level 3 Total Assets: Derivative assets $ 1.7 $ 2.7 $ — $ 4.4 Available-for-sale securities 4.8 — — 4.8 Total assets $ 6.5 $ 2.7 $ — $ 9.2 Liabilities: Derivative liabilities $ — $ 0.1 $ — $ 0.1 Deferred compensation liabilities 51.6 — — 51.6 Total liabilities $ 51.6 $ 0.1 $ — $ 51.7 The following table presents our financial assets and liabilities measured at fair value on a recurring basis based upon the level within the fair value hierarchy in which the fair value measurements fall, as of May 28, 2017 : Level 1 Level 2 Level 3 Total Assets: Derivative assets $ 2.0 $ 0.3 $ — $ 2.3 Available-for-sale securities 3.5 — — 3.5 Total assets $ 5.5 $ 0.3 $ — $ 5.8 Liabilities: Derivative liabilities $ — $ 1.3 $ — $ 1.3 Deferred compensation liabilities 47.2 — — 47.2 Total liabilities $ 47.2 $ 1.3 $ — $ 48.5 Certain assets and liabilities, including long-lived assets, goodwill, asset retirement obligations, and cost and equity investments are measured at fair value on a nonrecurring basis. During fiscal 2018, a charge of $4.7 million was recognized in the Corporate segment for the impairment of certain long-lived assets. The impairment was measured based upon the estimated sales price of the assets. During fiscal 2017, a charge of $27.6 million was recognized in the Grocery & Snacks segment for the impairment of our Wesson ® oil production facility. The impairment was measured based upon the estimated sales price of the facility (See Note 6). During fiscal 2017, goodwill impairment charges totaling $198.9 million were recognized within our International segment. See Note 9 for discussion of the methodology employed to measure these impairments. During fiscal 2018, we recognized indefinite-lived brand impairment charges of $ 4.0 million in our Grocery & Snacks segment and $ 0.8 million in our International segment. We recognized indefinite-lived brand impairment charges of $ 37.0 million in our International segment and $ 68.2 million in our Grocery & Snacks segment for fiscal 2017, and $ 50.1 million in our Grocery and Snacks segment for fiscal 2016. The fair values of these brands were estimated using the "relief from royalty" method (See Note 9). The carrying amount of long-term debt (including current installments) was $3.54 billion as of May 27, 2018 and $2.97 billion as of May 28, 2017 . Based on current market rates, the fair value of this debt (level 2 liabilities) at May 27, 2018 and May 28, 2017 was estimated at $3.76 billion and $3.32 billion , respectively.

BUSINESS SEGMENTS AND RELATED I

BUSINESS SEGMENTS AND RELATED INFORMATION	12 Months Ended
	May 27, 2018
Segment Reporting [Abstract]
BUSINESS SEGMENTS AND RELATED INFORMATION	BUSINESS SEGMENTS AND RELATED INFORMATION During fiscal 2017, we reorganized our reporting segments. We now reflect our results of operations in five reporting segments: Grocery & Snacks, Refrigerated & Frozen, International, Foodservice, and Commercial. Prior periods have been reclassified to conform to the revised segment presentation. In the second quarter of fiscal 2017, we completed the Spinoff of Lamb Weston. The Lamb Weston business had previously been included in the Commercial segment. The results of operations of the Lamb Weston business have been classified as discontinued operations for all periods presented. The Grocery & Snacks reporting segment principally includes branded, shelf-stable food products sold in various retail channels in the United States. The Refrigerated & Frozen reporting segment includes branded, temperature-controlled food products sold in various retail channels in the United States. The International reporting segment principally includes branded food products, in various temperature states, sold in various retail and foodservice channels outside of the United States. The Foodservice reporting segment includes branded and customized food products, including meals, entrees, sauces and a variety of custom-manufactured culinary products packaged for sale to restaurants and other foodservice establishments primarily in the United States. The Commercial reporting segment included commercially branded and private label food and ingredients, which were sold primarily to commercial, restaurant, foodservice, food manufacturing, and industrial customers. The segment's primary food items included a variety of vegetable, spice, and frozen bakery goods, which were sold under brands such as Spicetec Flavors & Seasonings ® . The Spicetec and JM Swank businesses were sold in the first quarter of fiscal 2017. We do not aggregate operating segments when determining our reporting segments. Intersegment sales have been recorded at amounts approximating market. Operating profit for each of the segments is based on net sales less all identifiable operating expenses. General corporate expense, net interest expense, and income taxes have been excluded from segment operations. 2018 2017 2016 Net sales Grocery & Snacks $ 3,287.0 $ 3,208.8 $ 3,377.1 Refrigerated & Frozen 2,753.0 2,652.7 2,867.8 International 843.5 816.0 846.6 Foodservice 1,054.8 1,078.3 1,104.5 Commercial — 71.1 468.1 Total net sales $ 7,938.3 $ 7,826.9 $ 8,664.1 Operating profit Grocery & Snacks $ 724.8 $ 653.7 $ 592.9 Refrigerated & Frozen 479.4 445.8 420.4 International 86.5 (168.9 ) 66.7 Foodservice 121.8 105.1 97.7 Commercial — 202.6 45.4 Total operating profit $ 1,412.5 $ 1,238.3 $ 1,223.1 Equity method investment earnings 97.3 71.2 66.1 General corporate expenses 379.0 313.3 818.5 Interest expense, net 158.7 195.5 295.8 Income tax expense 174.6 254.7 46.4 Income from continuing operations $ 797.5 $ 546.0 $ 128.5 Less: Net income attributable to noncontrolling interests of continuing operations 3.4 1.9 1.9 Income from continuing operations attributable to Conagra Brands, Inc. $ 794.1 $ 544.1 $ 126.6 Net sales by product type were: 2018 2017 2016 Shelf-stable $ 4,660.1 $ 4,682.4 $ 5,256.8 Temperature-controlled 3,278.2 3,144.5 3,407.3 Total net sales $ 7,938.3 $ 7,826.9 $ 8,664.1 Presentation of Derivative Gains (Losses) for Economic Hedges of Forecasted Cash Flows in Segment Results Derivatives used to manage commodity price risk and foreign currency risk are not designated for hedge accounting treatment. We believe these derivatives provide economic hedges of certain forecasted transactions. As such, these derivatives are recognized at fair market value with realized and unrealized gains and losses recognized in general corporate expenses. The gains and losses are subsequently recognized in the operating results of the reporting segments in the period in which the underlying transaction being economically hedged is included in earnings. In the event that management determines a particular derivative entered into as an economic hedge of a forecasted commodity purchase has ceased to function as an economic hedge, we cease recognizing further gains and losses on such derivatives in corporate expense and begin recognizing such gains and losses within segment operating results, immediately. The following table presents the net derivative gains (losses) from economic hedges of forecasted commodity consumption and the foreign currency risk of certain forecasted transactions, under this methodology: 2018 2017 2016 Net derivative gains (losses) incurred $ (0.9 ) $ 0.6 $ (7.4 ) Less: Net derivative gains (losses) allocated to reporting segments (7.1 ) 5.7 (23.8 ) Net derivative gains (losses) recognized in general corporate expenses $ 6.2 $ (5.1 ) $ 16.4 Net derivative gains (losses) allocated to Grocery & Snacks $ 0.2 $ 3.4 $ (14.4 ) Net derivative gains (losses) allocated to Refrigerated & Frozen (0.3 ) 0.8 (6.2 ) Net derivative gains (losses) allocated to International (6.9 ) 1.6 (0.5 ) Net derivative losses allocated to Foodservice (0.1 ) — (1.0 ) Net derivative losses allocated to Commercial — (0.1 ) (1.7 ) Net derivative gains (losses) included in segment operating profit $ (7.1 ) $ 5.7 $ (23.8 ) As of May 27, 2018 , the cumulative amount of net derivative gains from economic hedges that had been recognized in general corporate expenses and not yet allocated to reporting segments was $3.2 million , all of which was incurred during the fiscal year ended May 27, 2018 . Based on our forecasts of the timing of recognition of the underlying hedged items, we expect to reclassify to segment operating results gains of $2.5 million in fiscal 2019 and $0.7 million in fiscal 2020 and thereafter. Assets by Segment The majority of our manufacturing assets are shared across multiple reporting segments. Output from these facilities used by each reporting segment can change over time. Also, working capital balances are not tracked by reporting segment. Therefore, it is impracticable to allocate those assets to the reporting segments, as well as disclose total assets by segment. Total depreciation expense for fiscal 2018 , 2017 , and 2016 was $222.1 million , $234.4 million , and $243.9 million , respectively. Other Information Our operations are principally in the United States. With respect to operations outside of the United States, no single foreign country or geographic region was significant with respect to consolidated operations for fiscal 2018 , 2017 , and 2016 . Foreign net sales, including sales by domestic segments to customers located outside of the United States, were approximately $918.4 million , $887.2 million , and $937.9 million in fiscal 2018 , 2017 , and 2016 , respectively. Our long-lived assets located outside of the United States are not significant. Our largest customer, Walmart, Inc. and its affiliates, accounted for approximately 24% of consolidated net sales for both fiscal 2018 and 2017 and 23% of consolidated net sales for fiscal 2016 , significantly impacting the Grocery & Snacks and Refrigerated & Frozen segments. Walmart, Inc. and its affiliates accounted for approximately 25% and 26% of consolidated net receivables as of May 27, 2018 and May 28, 2017 , respectively. We offer certain suppliers access to a third-party service that allows them to view our scheduled payments online. The third-party service also allows suppliers to finance advances on our scheduled payments at the sole discretion of the supplier and the third-party. We have no economic interest in these financing arrangements and no direct relationship with the suppliers, the third-party, or any financial institutions concerning this service. All of our accounts payable remain as obligations to our suppliers as stated in our supplier agreements. As of May 27, 2018 , $103.1 million of our total accounts payable is payable to suppliers who utilize this third-party service.

QUARTERLY FINANCIAL DATA (Unaud

QUARTERLY FINANCIAL DATA (Unaudited)	12 Months Ended
	May 27, 2018
Quarterly Financial Information Disclosure [Abstract]
QUARTERLY FINANCIAL DATA (Unaudited)	QUARTERLY FINANCIAL DATA (Unaudited) 2018 2017 First Quarter Second Quarter Third Quarter Fourth Quarter First Quarter Second Quarter Third Quarter Fourth Quarter Net sales $ 1,804.2 $ 2,173.4 $ 1,994.5 $ 1,966.2 $ 1,895.6 $ 2,088.4 $ 1,981.2 $ 1,861.7 Gross profit 519.0 658.3 598.8 575.4 544.6 647.5 621.0 529.0 Income from continuing operations, net of tax 153.6 224.1 349.2 70.6 98.6 114.3 179.5 153.6 Income (loss) from discontinued operations, net of tax (0.3 ) 0.4 14.5 (0.3 ) 91.4 11.6 0.7 (1.7 ) Net income attributable to Conagra Brands, Inc. 152.5 223.5 362.8 69.6 186.2 122.1 179.7 151.3 Earnings per share (1) : Basic earnings per share: Net income attributable to Conagra Brands, Inc. common stockholders $ 0.37 $ 0.55 $ 0.91 $ 0.18 $ 0.42 $ 0.28 $ 0.42 $ 0.36 Diluted earnings per share: Net income attributable to Conagra Brands, Inc. common stockholders $ 0.36 $ 0.54 $ 0.90 $ 0.18 $ 0.42 $ 0.28 $ 0.41 $ 0.36 Dividends declared per common share (3) $ 0.2125 $ 0.2125 $ 0.2125 $ 0.2125 $ 0.25 $ 0.25 $ 0.20 $ 0.20 Share price (2) : High $ 39.95 $ 35.87 $ 38.50 $ 38.29 $ 48.39 $ 48.68 $ 41.16 $ 41.50 Low 33.07 32.43 35.47 35.34 45.70 34.30 36.47 37.29 (1) Basic and diluted earnings per share are calculated independently for each of the quarters presented. Accordingly, the sum of the quarterly earnings per share amounts may not agree with the total year. (2) Historical market prices do not reflect any adjustment for the impact of the Lamb Weston Spinoff. (3) Per share dividend declared in the third quarter and fourth quarter of fiscal 2017 includes impact of the Lamb Weston Spinoff.

SUMMARY OF SIGNIFICANT ACCOUN31

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	May 27, 2018
Accounting Policies [Abstract]
Fiscal Year	Fiscal Year — The fiscal year of Conagra Brands, Inc. ("Conagra Brands", "Company", "we", "us", or "our") ends the last Sunday in May. The fiscal years for the consolidated financial statements presented consist of 52-week periods for fiscal years 2018, 2017, and 2016.
Basis of Consolidation	Basis of Consolidation — The consolidated financial statements include the accounts of Conagra Brands, Inc. and all majority-owned subsidiaries. In addition, the accounts of all variable interest entities for which we have been determined to be the primary beneficiary are included in our consolidated financial statements from the date such determination is made. All significant intercompany investments, accounts, and transactions have been eliminated.
Investments in Unconsolidated Affiliates	Investments in Unconsolidated Affiliates — The investments in, and the operating results of, 50%-or-less-owned entities not required to be consolidated are included in the consolidated financial statements on the basis of the equity method of accounting or the cost method of accounting, depending on specific facts and circumstances. We review our investments in unconsolidated affiliates for impairment whenever events or changes in business circumstances indicate that the carrying amount of the investments may not be fully recoverable. Evidence of a loss in value that is other than temporary includes, but is not limited to, the absence of an ability to recover the carrying amount of the investment, the inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment, or, where applicable, estimated sales proceeds which are insufficient to recover the carrying amount of the investment. Management's assessment as to whether any decline in value is other than temporary is based on our ability and intent to hold the investment and whether evidence indicating the carrying value of the investment is recoverable within a reasonable period of time outweighs evidence to the contrary. Management generally considers our investments in equity method investees to be strategic long-term investments. Therefore, management completes its assessments with a long-term viewpoint. If the fair value of the investment is determined to be less than the carrying value and the decline in value is considered to be other than temporary, an appropriate write-down is recorded based on the excess of the carrying value over the best estimate of fair value of the investment.
Cash and Cash Equivalents	Cash and Cash Equivalents — Cash and all highly liquid investments with an original maturity of three months or less at the date of acquisition, including short-term time deposits and government agency and corporate obligations, are classified as cash and cash equivalents.
Receivables	Receivables — Receivables from customers generally do not bear interest. Terms and collection vary by location and channel. The allowance for doubtful accounts represents our estimate of probable non-payments and credit losses in our existing receivables, as determined based on a review of past due balances and other specific account data. Account balances are written off against the allowance when we deem them uncollectible.
Inventories	Inventories — We use the lower of cost (determined using the first-in, first-out method) or market for valuing inventories.
Property, Plant and Equipment	Property, Plant and Equipment — Property, plant and equipment are carried at cost. Depreciation has been calculated using the straight-line method over the estimated useful lives of the respective classes of assets as follows: Land improvements 1 - 40 years Buildings 15 - 40 years Machinery and equipment 3 - 20 years Furniture, fixtures, office equipment and other 5 - 15 years We review property, plant and equipment for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets may not be fully recoverable. Recoverability of an asset considered "held-and-used" is determined by comparing the carrying amount of the asset to the undiscounted net cash flows expected to be generated from the use of the asset. If the carrying amount is greater than the undiscounted net cash flows expected to be generated by the asset, the asset's carrying amount is reduced to its estimated fair value. An asset considered "held-for-sale" is reported at the lower of the asset's carrying amount or fair value.
Goodwill and Other Identifiable Intangible Assets	Goodwill and Other Identifiable Intangible Assets — Goodwill and other identifiable intangible assets with indefinite lives (e.g., brands or trademarks) are not amortized and are tested annually for impairment of value and whenever events or changes in circumstances indicate the carrying amount of the asset may be impaired. A significant amount of judgment is involved in determining if an indicator of impairment has occurred. Such indicators may include deterioration in general economic conditions, adverse changes in the markets in which an entity operates, increases in input costs that have negative effects on earnings and cash flows, or a trend of negative or declining cash flows over multiple periods, among others. The fair value that could be realized in an actual transaction may differ from that used to evaluate the impairment of goodwill and other intangible assets. In testing goodwill for impairment, we have the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (more than 50% ) that the estimated fair value of a reporting unit is less than its carrying amount. If we elect to perform a qualitative assessment and determine that an impairment is more likely than not, we are then required to perform a quantitative impairment test, otherwise no further analysis is required. We also may elect not to perform the qualitative assessment and, instead, proceed directly to the quantitative impairment test. Under the goodwill qualitative assessment, various events and circumstances that would affect the estimated fair value of a reporting unit are identified (similar to impairment indicators above). Furthermore, management considers the results of the most recent quantitative impairment test completed for a reporting unit and compares the weighted average cost of capital between the current and prior years for each reporting unit. Under the goodwill quantitative impairment test, the evaluation of impairment involves comparing the current fair value of each reporting unit to its carrying value, including goodwill. We estimate the fair value using level 3 inputs as defined by the fair value hierarchy. Refer to Note 20 for the definition of the levels in the fair value hierarchy. The inputs used to calculate the fair value include a number of subjective factors, such as estimates of future cash flows, estimates of our future cost structure, discount rates for our estimated cash flows, required level of working capital, assumed terminal value, and time horizon of cash flow forecasts. Prior to the fourth quarter of fiscal 2017, if the carrying value of a reporting unit exceeded its fair value, we completed a second step of the test to determine the amount of goodwill impairment loss, if any, to be recognized. In the second step, we estimated an implied fair value of the reporting unit's goodwill by allocating the fair value of the reporting unit to all of the assets and liabilities other than goodwill (including any unrecognized intangible assets). The impairment loss was equal to the excess of the carrying value of the goodwill over the implied fair value of that goodwill. Beginning in the fourth quarter of fiscal 2017, if the carrying value of a reporting unit exceeds its fair value, we recognize an impairment loss equal to the difference between the carrying value and estimated fair value of the reporting unit. In assessing other intangible assets not subject to amortization for impairment, we have the option to perform a qualitative assessment to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of such an intangible asset is less than its carrying amount. If we determine that it is not more likely than not that the fair value of such an intangible asset is less than its carrying amount, then we are not required to perform any additional tests for assessing intangible assets for impairment. However, if we conclude otherwise or elect not to perform the qualitative assessment, then we are required to perform a quantitative impairment test that involves a comparison of the estimated fair value of the intangible asset with its carrying value. If the carrying value of the intangible asset exceeds its fair value, an impairment loss is recognized in an amount equal to that excess. In fiscal 2018, 2017, and 2016 we elected to perform a quantitative impairment test for other intangible assets not subject to amortization. The estimates of fair value of intangible assets not subject to amortization are determined using a "relief from royalty" methodology, which is used in estimating the fair value of our brands/trademarks. Discount rate assumptions are based on an assessment of the risk inherent in the projected future cash flows generated by the respective intangible assets. Also subject to judgment are assumptions about royalty rates. Identifiable intangible assets with definite lives (e.g., licensing arrangements with contractual lives or customer relationships) are amortized over their estimated useful lives and tested for impairment whenever events or changes in circumstances indicate the carrying amount of the asset may be impaired. Identifiable intangible assets with definite lives are evaluated for impairment using a process similar to that used in evaluating elements of property, plant and equipment. If impaired, the asset is written down to its fair value. Refer to Note 9 for discussion of the impairment charges related to goodwill and intangible assets in fiscal 2018, 2017, and 2016.
Fair Values of Financial Instruments	Fair Values of Financial Instruments — Unless otherwise specified, we believe the carrying value of financial instruments approximates their fair value.
Environmental Liabilities	Environmental Liabilities — Environmental liabilities are accrued when it is probable that obligations have been incurred and the associated amounts can be reasonably estimated. We use third-party specialists to assist management in appropriately measuring the obligations associated with environmental liabilities. Such liabilities are adjusted as new information develops or circumstances change. We do not discount our environmental liabilities as the timing of the anticipated cash payments is not fixed or readily determinable. Management's estimate of our potential liability is independent of any potential recovery of insurance proceeds or indemnification arrangements. We do not reduce our environmental liabilities for potential insurance recoveries.
Employment-Related Benefits	Employment-Related Benefits — Employment-related benefits associated with pensions, postretirement health care benefits, and workers' compensation are expensed as such obligations are incurred. The recognition of expense is impacted by estimates made by management, such as discount rates used to value these liabilities, future health care costs, and employee accidents incurred but not yet reported. We use third-party specialists to assist management in appropriately measuring the obligations associated with employment-related benefits. We recognize changes in the fair value of pension plan assets and net actuarial gains or losses in excess of 10% of the greater of the market-related value of plan assets or the plan's projected benefit obligation (the "corridor") in current period expense annually as of our measurement date, which is our fiscal year-end, or when measurement is required otherwise under generally accepted accounting principles.
Revenue Recognition	Revenue Recognition — Revenue is recognized when title and risk of loss are transferred to customers upon delivery based on terms of sale and collectability is reasonably assured. Revenue is recognized as the net amount to be received after deducting estimated amounts for discounts, trade allowances, and returns of damaged and out-of-date products.
Shipping and Handling	Shipping and Handling — Amounts billed to customers related to shipping and handling are included in net sales. Shipping and handling costs are included in cost of goods sold.
Marketing Costs	Marketing Costs — We promote our products with advertising, consumer incentives, and trade promotions. Such programs include, but are not limited to, discounts, coupons, rebates, and volume-based incentives. Advertising costs are expensed as incurred. Consumer incentives and trade promotion activities are recorded as a reduction of revenue or as a component of cost of goods sold based on amounts estimated as being due to customers and consumers at the end of the period, based principally on historical utilization and redemption rates.
Research and Development	Research and Development — We incurred expenses of $47.3 million , $44.6 million , and $59.6 million for research and development activities in fiscal 2018 , 2017 , and 2016 , respectively.
Comprehensive Income	Comprehensive Income — Comprehensive income includes net income, currency translation adjustments, certain derivative-related activity, changes in the value of available-for-sale investments, and changes in prior service cost and net actuarial gains (losses) from pension (for amounts not in excess of the 10% "corridor") and postretirement health care plans. On foreign investments we deem to be essentially permanent in nature, we do not provide for taxes on currency translation adjustments arising from converting an investment denominated in a foreign currency to U.S. dollars. When we determine that a foreign investment, as well as undistributed earnings, are no longer permanent in nature, estimated taxes will be provided for the related deferred tax liability (asset), if any, resulting from currency translation adjustments.
Foreign Currency Transaction Gains and Losses	Foreign Currency Transaction Gains and Losses — We recognized net foreign currency transaction losses from continuing operations of $1.4 million , $1.5 million , and $5.1 million in fiscal 2018 , 2017 , and 2016 , respectively, in SG&A expenses.
Business Combinations	Business Combinations — We use the acquisition method in accounting for acquired businesses. Under the acquisition method, our financial statements reflect the operations of an acquired business starting from the completion of the acquisition. The assets acquired and liabilities assumed are recorded at their respective estimated fair values at the date of the acquisition. Any excess of the purchase price over the estimated fair values of the identifiable net assets acquired is recorded as goodwill.
Reclassifications and other changes	Reclassifications and other changes — Certain prior year amounts have been reclassified to conform with current year presentation.
Use of Estimates	Use of Estimates — Preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions. These estimates and assumptions affect reported amounts of assets, liabilities, revenues, and expenses as reflected in the consolidated financial statements. Actual results could differ from these estimates.
Accounting Changes and Recently Issued Accounting Standards	Accounting Changes — In July 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2015-11, Inventory , which requires an entity to measure inventory within the scope at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. We adopted this ASU prospectively in fiscal 2018. The adoption of this guidance did not have a material impact to our financial statements. In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which will allow a reclassification from accumulated other comprehensive income to retained earnings for the tax effects resulting from "An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018" (the "Act") that are stranded in accumulated other comprehensive income. This standard also requires certain disclosures about stranded tax effects. This ASU, however, does not change the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations. ASU 2018-02 is effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. It must be applied either in the period of adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate in the Act is recognized. We elected to early adopt this ASU for the period ended February 25, 2018. The amount of the reclassification was $17.4 million . Recently Issued Accounting Standards — In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers , which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP. On July 9, 2015, the FASB deferred the effective date of the new revenue recognition standard by one year. The updated standard is effective for fiscal years beginning after December 15, 2017. Based on the FASB's ASU, we will apply the new revenue standard in our fiscal year 2019. Early adoption in our fiscal year 2018 is permitted. Entities will have the option to adopt the ASU using either the full retrospective or modified retrospective transition method. We have concluded our assessment of the new standard and will be adopting the provisions of the ASU utilizing the modified retrospective transition method. The adoption of ASU 2014-09 will not have a material impact on our consolidated financial statements. In January 2016, the FASB issued ASU 2016-01, Financial Instruments-Overall: Recognition and Measurement of Financial Assets and Financial Liabilities , which addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. The effective date for this standard is for fiscal years beginning after December 31, 2017. We do not expect ASU 2016-01 to have a material impact to our consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases , Topic 842, which requires lessees to reflect most leases on their balance sheet as assets and obligations. The effective date for the standard is for fiscal years beginning after December 15, 2018. Early adoption is permitted. We are evaluating the effect that this standard will have on our consolidated financial statements and related disclosures. The standard is to be applied under the modified retrospective method, with elective reliefs, which requires application of the new guidance for all periods presented. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments , which clarifies how companies present and classify certain cash receipts and cash payments in the statement of cash flows. The effective date for the standard is for fiscal years beginning after December 15, 2017. We do not expect ASU 2016-15 to have a material impact to our consolidated financial statements. In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows: Restricted Cash , which provides amendments to current guidance to address the classifications and presentation of changes in restricted cash in the statement of cash flows. The effective date for the standard is for fiscal years beginning after December 15, 2017. We do not expect ASU 2016-18 to have a material impact to our consolidated financial statements. In January 2017, the FASB issued ASU 2017-01, Business Combinations: Clarifying the Definition of a Business , which provides a new framework for determining whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The effective date for the standard is for fiscal years beginning after December 15, 2017. We do not expect ASU 2017-01 to have a material impact to our consolidated financial statements. In March 2017, the FASB issued ASU 2017-07, Retirement Benefits: Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost , which requires companies to present the service cost component of net benefit cost in the same line items in which they report compensation cost. Companies will present all other components of net benefit cost outside a subtotal of operating income, if presented, or disclosed separately. Also, only the service cost component may be eligible for capitalization where applicable. The amendments in this ASU should be applied retrospectively for the presentation of the service cost component and the other components of net periodic pension cost and net periodic postretirement benefit cost in the income statement and prospectively for the capitalization of service cost components. The effective date for the standard is for fiscal years beginning after December 15, 2017. We will adopt ASU 2017-07 in our fiscal 2019. The estimated impact is a reclassification of a benefit of $80.4 million , a benefit of $55.2 million , and a charge of $303.8 million to non-operating income (expense) for fiscal 2018, 2017, and 2016, respectively. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging: Targeted Improvements to Accounting for Hedging Activities , which improves the financial reporting of hedging relationships to better portray the economic results of an entity's risk management activities in its financial statements and make certain targeted improvements to simplify the application of the hedge accounting guidance in current U.S. GAAP. The amendments in this update better align an entity's risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and presentation of hedge results. The effective date for the standard is for fiscal years beginning after December 15, 2018. Early adoption is permitted. We plan to early adopt this ASU at the beginning of our fiscal 2019. We do not expect ASU 2017-12 to have a material impact to our consolidated financial statements.

SUMMARY OF SIGNIFICANT ACCOUN32

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	May 27, 2018
Accounting Policies [Abstract]
Balances of Allowance for Doubtful Accounts and Changes Therein	The following table details the balances of our allowance for doubtful accounts and changes therein: Balance at Beginning of Period Additions Charged to Costs and Expenses Other Deductions from Reserves Balance at Close of Period Year ended May 27, 2018 $ 3.1 0.8 — 1.9 (2) $ 2.0 Year ended May 28, 2017 $ 3.2 1.0 — 1.1 (2) $ 3.1 Year ended May 29, 2016 $ 3.0 1.1 (0.1 ) (1) 0.8 (2) $ 3.2 (1) Primarily translation incurred during fiscal 2016. (2) Bad debts charged off and adjustments to previous reserves, less recoveries.
Schedule of Estimated Useful Lives of Property, Plant and Equipment	Depreciation has been calculated using the straight-line method over the estimated useful lives of the respective classes of assets as follows: Land improvements 1 - 40 years Buildings 15 - 40 years Machinery and equipment 3 - 20 years Furniture, fixtures, office equipment and other 5 - 15 years
Schedule of Accumulated Balances for Each Component of Other Comprehensive Income (Loss), Net of Tax	The following table details the accumulated balances for each component of other comprehensive income (loss), net of tax: 2018 2017 2016 Currency translation losses, net of reclassification adjustments $ (94.7 ) $ (98.6 ) $ (95.2 ) Derivative adjustments, net of reclassification adjustments 1.0 (1.1 ) (0.4 ) Unrealized gains (losses) on available-for-sale securities 0.6 (0.3 ) (0.6 ) Pension and post-employment benefit obligations, net of reclassification adjustments (17.4 ) (112.9 ) (248.3 ) Accumulated other comprehensive loss 1 $ (110.5 ) $ (212.9 ) $ (344.5 ) 1 Net of stranded tax effects from change in tax rate as a result of the early adoption of ASU 2018-02 in the amount of $17.4 million which has been reclassified to retained earnings.
Summary of Reclassifications from Accumulated Other Comprehensive Loss into Income (Loss)	The following table summarizes the reclassifications from accumulated other comprehensive loss into income (loss): Affected Line Item in the Consolidated Statement of Operations 1 2018 2017 2016 Net derivative adjustment, net of tax: Cash flow hedges $ 0.1 $ (0.2 ) $ (2.1 ) Interest expense, net 0.1 (0.2 ) (2.1 ) Total before tax — 0.1 0.8 Income tax expense $ 0.1 $ (0.1 ) $ (1.3 ) Net of tax Amortization of pension and postretirement healthcare liabilities: Net prior service benefit $ (0.4 ) $ (3.9 ) $ (5.1 ) Selling, general and administrative expenses Divestiture of Private Brands — — (4.3 ) Income (loss) from discontinued operations, net of tax Pension settlement of equity method investee — — (5.2 ) Equity method investment earnings Pension settlement 1.3 13.8 — Selling, general and administrative expenses Net actuarial loss — 0.5 0.1 Selling, general and administrative expenses 0.9 10.4 (14.5 ) Total before tax (0.2 ) (4.0 ) 4.9 Income tax expense $ 0.7 $ 6.4 $ (9.6 ) Net of tax Currency translation losses $ — $ — $ 73.4 Income (loss) from discontinued operations, net of tax — — 73.4 Total before tax — — — Income tax expense $ — $ — $ 73.4 Net of tax 1 Amounts in parentheses indicate income recognized in the Consolidated Statements of Operations.

RESTRUCTURING ACTIVITIES (Table

RESTRUCTURING ACTIVITIES (Tables)	12 Months Ended
	May 27, 2018
Restructuring and Related Activities [Abstract]
Schedule of Pre-Tax Expenses in Association with the SCAE Plan	We recognized the following cumulative (plan inception to May 27, 2018 ) pre-tax expenses for the SCAE Plan related to our continuing operations in our Consolidated Statements of Operations: Grocery & Snacks Refrigerated & Frozen International Foodservice Corporate Total Pension costs $ 33.4 $ 1.5 $ — $ — $ — $ 34.9 Accelerated depreciation 33.0 18.6 — — 1.2 52.8 Other cost of goods sold 10.3 2.1 — — — 12.4 Total cost of goods sold 76.7 22.2 — — 1.2 100.1 Severance and related costs, net 26.5 10.3 3.7 7.9 102.2 150.6 Fixed asset impairment (net of gains on disposal) 6.1 6.9 — — 11.2 24.2 Accelerated depreciation — — — — 4.1 4.1 Contract/lease cancellation expenses 1.0 0.6 0.9 — 84.3 86.8 Consulting/professional fees 1.0 0.4 0.1 — 52.2 53.7 Other selling, general and administrative expenses 15.8 3.3 — — 21.7 40.8 Total selling, general and administrative expenses 50.4 21.5 4.7 7.9 275.7 360.2 Consolidated total $ 127.1 $ 43.7 $ 4.7 $ 7.9 $ 276.9 $ 460.3 We anticipate that we will recognize the following pre-tax expenses in association with the SCAE Plan related to our continuing operations (amounts include charges recognized from plan inception to May 27, 2018 ): Grocery & Snacks Refrigerated & Frozen International Foodservice Corporate Total Pension costs $ 33.4 $ 1.5 $ — $ — $ — $ 34.9 Accelerated depreciation 37.0 18.6 — — 1.2 56.8 Other cost of goods sold 11.9 2.1 — — — 14.0 Total cost of goods sold 82.3 22.2 — — 1.2 105.7 Severance and related costs, net 27.5 10.3 3.7 7.9 102.6 152.0 Fixed asset impairment (net of gains on disposal) 6.1 6.9 — — 11.2 24.2 Accelerated depreciation — — — — 4.1 4.1 Contract/lease cancellation expenses 1.0 0.6 0.9 — 84.4 86.9 Consulting/professional fees 1.0 0.4 0.1 — 54.0 55.5 Other selling, general and administrative expenses 16.4 3.3 — — 23.5 43.2 Total selling, general and administrative expenses 52.0 21.5 4.7 7.9 279.8 365.9 Consolidated total $ 134.3 $ 43.7 $ 4.7 $ 7.9 $ 281.0 $ 471.6 During fiscal 2018 , we recognized the following pre-tax expenses for the SCAE Plan related to our continuing operations: Grocery & Snacks Refrigerated & Frozen International Corporate Total Pension costs $ 0.5 $ — $ — $ — $ 0.5 Accelerated depreciation 2.0 — — — 2.0 Other cost of goods sold 5.3 — — — 5.3 Total cost of goods sold 7.8 — — — 7.8 Severance and related costs, net 2.6 — 1.2 0.7 4.5 Fixed asset impairment (net of gains on disposal) (1.2 ) — — 4.4 3.2 Accelerated depreciation — — — 1.5 1.5 Contract/lease cancellation expenses 0.2 — 0.3 13.0 13.5 Consulting/professional fees 0.1 — — 1.0 1.1 Other selling, general and administrative expenses 4.6 0.1 — 1.7 6.4 Total selling, general and administrative expenses 6.3 0.1 1.5 22.3 30.2 Consolidated total $ 14.1 $ 0.1 $ 1.5 $ 22.3 $ 38.0
Schedule of Liabilities Recorded for the SCAE Plan	Liabilities recorded for the SCAE Plan related to our continuing operations and changes therein for fiscal 2018 were as follows: Balance at May 28, Costs Incurred and Charged to Expense Costs Paid or Otherwise Settled Changes in Estimates Balance at May 27, 2018 Pension costs $ 31.8 $ — $ — $ 0.5 $ 32.3 Severance and related costs 13.8 5.7 (12.0 ) (1.2 ) 6.3 Consulting/professional fees 0.6 1.1 (1.6 ) — 0.1 Contract/lease cancellation 11.6 13.7 (20.2 ) (0.2 ) 4.9 Other costs 1.9 11.0 (12.7 ) — 0.2 Total $ 59.7 $ 31.5 $ (46.5 ) $ (0.9 ) $ 43.8

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	12 Months Ended
	May 27, 2018
Debt Disclosure [Abstract]
Schedule of Long-Term Debt Instruments	May 27, 2018 May 28, 2017 4.65% senior debt due January 2043 $ 176.7 $ 176.7 6.625% senior debt due August 2039 91.4 91.4 8.25% senior debt due September 2030 300.0 300.0 7.0% senior debt due October 2028 382.2 382.2 6.7% senior debt due August 2027 9.2 9.2 7.125% senior debt due October 2026 262.5 262.5 3.2% senior debt due January 2023 837.0 837.0 3.25% senior debt due September 2022 250.0 250.0 9.75% subordinated debt due March 2021 195.9 195.9 LIBOR plus 0.50% senior debt due October 2020 500.0 — 4.95% senior debt due August 2020 126.6 126.6 LIBOR plus 0.75% term loan due February 2019 300.0 — 2.1% senior debt due March 2018 — 70.0 1.9% senior debt due January 2018 — 119.6 2.00% to 9.59% lease financing obligations due on various dates through 2033 94.7 131.2 Other indebtedness 0.2 0.2 Total face value of debt 3,526.4 2,952.5 Unamortized fair value adjustment 27.6 30.8 Unamortized discounts (5.8 ) (6.4 ) Unamortized debt issuance costs (11.3 ) (10.9 ) Adjustment due to hedging activity 1.6 2.2 Less current installments (307.0 ) (199.0 ) Total long-term debt $ 3,231.5 $ 2,769.2
Schedule of Aggregate Minimum Principal Maturities of Long-Term Debt	The aggregate minimum principal maturities of the long-term debt for each of the five fiscal years following May 27, 2018 , are as follows: 2019 $ 307.1 2020 6.7 2021 829.4 2022 6.9 2023 1,093.6
Schedule of Net Interest Expense	Net interest expense consists of: 2018 2017 2016 Long-term debt $ 161.2 $ 203.6 $ 302.9 Short-term debt 4.8 0.6 1.9 Interest income (3.8 ) (3.7 ) (1.2 ) Interest capitalized (3.5 ) (5.0 ) (7.8 ) $ 158.7 $ 195.5 $ 295.8

DISCONTINUED OPERATIONS AND O35

DISCONTINUED OPERATIONS AND OTHER DIVESTITURES (Tables)	12 Months Ended
	May 27, 2018
Discontinued Operations and Disposal Groups [Abstract]
Summary of Comparative Financial Results	The summary comparative financial results of the Lamb Weston business through the date of the Spinoff, included within discontinued operations, were as follows: 2018 2017 2016 Net sales $ — $ 1,407.9 $ 2,975.0 Income (loss) from discontinued operations before income taxes and equity method investment earnings $ (0.3 ) $ 172.3 $ 474.8 Income (loss) before income taxes and equity method investment earnings (0.3 ) 172.3 474.8 Income tax expense (benefit) (14.6 ) 87.5 178.9 Equity method investment earnings — 15.9 71.7 Income from discontinued operations, net of tax 14.3 100.7 367.6 Less: Net income attributable to noncontrolling interests — 6.8 9.2 Net income from discontinued operations attributable to Conagra Brands, Inc. $ 14.3 $ 93.9 $ 358.4 The summary comparative financial results of the Private Brands business, included within discontinued operations, were as follows: 2018 2017 2016 Net sales $ — $ — $ 2,490.6 Loss on sale of business $ — $ (1.6 ) $ — Long-lived asset impairment charges — — (1,923.0 ) Income from operations of discontinued operations before income taxes 0.4 3.9 168.0 Income (loss) before income taxes and equity method investment earnings 0.4 2.3 (1,755.0 ) Income tax expense (benefit) 0.5 (0.3 ) (593.1 ) Income (loss) from discontinued operations, net of tax $ (0.1 ) $ 2.6 $ (1,161.9 )
Schedule of Assets and Liabilities Classified as Held for Sale	The assets classified as held for sale reflected in our Consolidated Balance Sheets related to the Del Monte ® processed fruit and vegetable business in Canada were as follows: May 27, 2018 May 28, 2017 Current assets $ 6.1 $ 6.3 Noncurrent assets (including goodwill of $5.8 million) 11.5 11.4 The assets classified as held for sale reflected in our Consolidated Balance Sheets related to the Wesson ® oil business were as follows: May 27, 2018 May 28, 2017 Current assets $ 37.7 $ 35.5 Noncurrent assets (including goodwill of $74.5 million) 101.0 102.8

INVESTMENTS IN JOINT VENTURES (

INVESTMENTS IN JOINT VENTURES (Tables)	12 Months Ended
	May 27, 2018
Equity Method Investments and Joint Ventures [Abstract]
Summary of Combined Financial Information	Summarized combined financial information for our equity method investments on a 100% basis is as follows: 2018 2017 2016 Net Sales: Ardent Mills $ 3,344.1 $ 3,180.0 $ 3,395.3 Others 198.8 177.7 167.2 Total net sales $ 3,542.9 $ 3,357.7 $ 3,562.5 Gross margin: Ardent Mills $ 386.5 $ 340.3 $ 339.2 Others 34.8 34.6 32.8 Total gross margin $ 421.3 $ 374.9 $ 372.0 Earnings after income taxes: Ardent Mills $ 197.0 $ 152.0 $ 142.9 Others 10.1 10.1 6.4 Total earnings after income taxes $ 207.1 $ 162.1 $ 149.3 May 27, 2018 May 28, 2017 Ardent Mills: Current assets $ 974.6 $ 937.2 Noncurrent assets 1,675.7 1,694.2 Current liabilities 355.6 388.9 Noncurrent liabilities 510.9 518.0 Others: Current assets $ 76.4 $ 75.5 Noncurrent assets 15.5 12.2 Current liabilities 37.5 44.5 Noncurrent liabilities 0.1 —

GOODWILL AND OTHER IDENTIFIAB37

GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS (Tables)	12 Months Ended
	May 27, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of the Change in the Carrying Amount of Goodwill	The change in the carrying amount of goodwill for fiscal 2018 and 2017 was as follows: Grocery & Snacks Refrigerated & Frozen International Foodservice Total Balance as of May 29, 2016 $ 2,273.1 $ 1,028.9 $ 442.8 $ 571.1 $ 4,315.9 Impairment — — (198.9 ) — (198.9 ) Acquisitions 166.0 8.3 — — 174.3 Currency translation — 0.1 3.9 — 4.0 Balance as of May 28, 2017 $ 2,439.1 $ 1,037.3 $ 247.8 $ 571.1 $ 4,295.3 Acquisitions 155.2 57.8 — — 213.0 Purchase accounting adjustments (1.5 ) — — — (1.5 ) Currency translation — 0.6 (4.9 ) — (4.3 ) Balance as of May 27, 2018 $ 2,592.8 $ 1,095.7 $ 242.9 $ 571.1 $ 4,502.5
Schedule of Other Identifiable Intangible Assets	Other identifiable intangible assets were as follows: 2018 2017 Gross Accumulated Gross Accumulated Non-amortizing intangible assets $ 918.3 $ — $ 829.7 $ — Amortizing intangible assets 579.4 213.2 573.5 179.5 $ 1,497.7 $ 213.2 $ 1,403.2 $ 179.5

EARNINGS (LOSS) PER SHARE (Tabl

EARNINGS (LOSS) PER SHARE (Tables)	12 Months Ended
	May 27, 2018
Earnings Per Share [Abstract]
Reconciliation of Income and Average Share Amounts Used to Compute Both Basic and Diluted Earnings (Loss) Per Share	The following table reconciles the income and average share amounts used to compute both basic and diluted earnings (loss) per share: 2018 2017 2016 Net income (loss) available to Conagra Brands, Inc. common stockholders: Income from continuing operations attributable to Conagra Brands, Inc. common stockholders $ 794.1 $ 544.1 $ 126.6 Income (loss) from discontinued operations, net of tax, attributable to Conagra Brands, Inc. common stockholders 14.3 95.2 (803.6 ) Net income (loss) attributable to Conagra Brands, Inc. common stockholders $ 808.4 $ 639.3 $ (677.0 ) Less: Increase in redemption value of noncontrolling interests in excess of earnings allocated — 0.8 4.8 Net income (loss) available to Conagra Brands, Inc. common stockholders $ 808.4 $ 638.5 $ (681.8 ) Weighted average shares outstanding: Basic weighted average shares outstanding 403.9 431.9 434.4 Add: Dilutive effect of stock options, restricted stock unit awards, and other dilutive securities 3.5 4.1 4.1 Diluted weighted average shares outstanding 407.4 436.0 438.5

INVENTORIES (Tables)

INVENTORIES (Tables)	12 Months Ended
	May 27, 2018
Inventory Disclosure [Abstract]
Schedule of Major Classes of Inventories	The major classes of inventories were as follows: May 27, 2018 May 28, 2017 Raw materials and packaging $ 206.2 $ 182.1 Work in process 92.4 91.9 Finished goods 651.1 606.6 Supplies and other 47.4 47.3 Total $ 997.1 $ 927.9

OTHER NONCURRENT LIABILITIES (T

OTHER NONCURRENT LIABILITIES (Tables)	12 Months Ended
	May 27, 2018
Other Liabilities Disclosure [Abstract]
Schedule of Other Noncurrent Liabilities	Other noncurrent liabilities consisted of: May 27, 2018 May 28, 2017 Postretirement health care and pension obligations $ 261.7 $ 709.8 Noncurrent income tax liabilities 490.4 466.5 Self-insurance liabilities 27.1 29.0 Environmental liabilities (see Note 17) 56.0 54.7 Technology agreement liability (see Note 9) 42.7 56.4 Other 187.3 212.4 $ 1,065.2 $ 1,528.8

SHARE-BASED PAYMENTS (Tables)

SHARE-BASED PAYMENTS (Tables)	12 Months Ended
	May 27, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Nonvested Share Units and Changes	The following table summarizes the nonvested share units as of May 27, 2018 and changes during the fiscal year then ended: Stock-settled Cash-settled Share Units Share Units (in Millions) Weighted Average Grant-Date Fair Value Share Units (in Millions) Weighted Average Grant-Date Fair Value Nonvested share units at May 28, 2017 1.56 $ 31.59 1.21 $ 30.52 Granted 0.87 $ 34.16 — $ — Vested/Issued (0.53 ) $ 26.58 (0.42 ) $ 22.86 Forfeited (0.12 ) $ 33.77 (0.08 ) $ 34.60 Nonvested share units at May 27, 2018 1.78 $ 34.20 0.71 $ 34.58
Summary of Activity for Performance Share Awards and Changes	A summary of the activity for performance share awards as of May 27, 2018 and changes during the fiscal year then ended is presented below: Performance Shares Share Units (in Millions) Weighted Average Grant-Date Fair Value Nonvested performance shares at May 28, 2017 0.86 $ 29.23 Granted 0.48 $ 33.82 Adjustments for performance results attained and dividend equivalents 0.01 $ 22.98 Vested/Issued (0.33 ) $ 24.08 Forfeited (0.02 ) $ 33.69 Nonvested performance shares at May 27, 2018 1.00 $ 33.40
Schedule of Weighted Average Assumptions for Stock Options Granted	The fair value of each option is estimated on the date of grant using a Black-Scholes option-pricing model with the following weighted average assumptions for stock options granted: 2017 2016 Expected volatility (%) 19.15 17.88 Dividend yield (%) 2.33 2.74 Risk-free interest rates (%) 1.03 1.60 Expected life of stock option (years) 4.94 4.96
Summary of Option Activity and Changes	A summary of the option activity as of May 27, 2018 and changes during the fiscal year then ended is presented below: Options Number of Options (in Millions) Weighted Average Exercise Price Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (in Millions) Outstanding at May 28, 2017 6.3 $ 27.12 Exercised (1.1 ) $ 22.28 $ 15.8 Forfeited (0.1 ) $ 34.78 Outstanding at May 27, 2018 5.1 $ 28.11 5.76 $ 47.6 Exercisable at May 27, 2018 4.0 $ 26.34 5.14 $ 44.4

PRE-TAX INCOME AND INCOME TAX42

PRE-TAX INCOME AND INCOME TAXES (Tables)	12 Months Ended
	May 27, 2018
Income Tax Disclosure [Abstract]
Schedule of Pre-Tax Income from Continuing Operations	Pre-tax income from continuing operations (including equity method investment earnings) consisted of the following: 2018 2017 2016 United States $ 902.5 $ 883.5 $ 136.9 Foreign 69.6 (82.8 ) 38.0 $ 972.1 $ 800.7 $ 174.9
Schedule of the Provision for Income Taxes	The provision for income taxes included the following: 2018 2017 2016 Current Federal $ 153.1 $ 201.5 $ 206.5 State 17.8 6.7 31.0 Foreign 32.5 6.5 8.6 203.4 214.7 246.1 Deferred Federal (43.7 ) 62.1 (161.5 ) State 17.4 (5.3 ) (38.9 ) Foreign (2.5 ) (16.8 ) 0.7 (28.8 ) 40.0 (199.7 ) $ 174.6 $ 254.7 $ 46.4
Reconciliation of Income Taxes to the Provision for Income Taxes	Income taxes computed by applying the U.S. Federal statutory rates to income from continuing operations before income taxes are reconciled to the provision for income taxes set forth in the Consolidated Statements of Operations as follows: 2018 2017 2016 Computed U.S. Federal income taxes $ 285.3 $ 280.2 $ 61.2 State income taxes, net of U.S. Federal tax impact 18.0 22.4 (6.4 ) Remeasurement of U.S. deferred taxes (241.6 ) — — Transition tax on foreign earnings 19.8 — — Tax credits and domestic manufacturing deduction (20.6 ) (19.8 ) (16.5 ) Federal rate differential on legal reserve 12.6 — — Goodwill and intangible impairments — 104.7 — Stock compensation (5.7 ) (18.8 ) — Change of valuation allowance on capital loss carryforward 78.6 (84.1 ) — Change in estimate related to tax methods used for certain international sales, federal credits, and state credits — (8.0 ) 6.0 Other 28.2 (21.9 ) 2.1 $ 174.6 $ 254.7 $ 46.4
Schedule of the Tax Effect of Temporary Differences and Carryforwards	The tax effect of temporary differences and carryforwards that give rise to significant portions of deferred tax assets and liabilities consisted of the following: May 27, 2018 May 28, 2017 Assets Liabilities Assets Liabilities Property, plant and equipment $ — $ 141.0 $ — $ 216.6 Goodwill, trademarks and other intangible assets — 406.2 — 623.4 Accrued expenses 15.5 — 20.2 — Compensation related liabilities 34.1 — 63.9 — Pension and other postretirement benefits 45.8 — 275.2 — Investment in unconsolidated subsidiaries — 165.8 — 237.8 Other liabilities that will give rise to future tax deductions 109.7 — 117.9 — Net capital and operating loss carryforwards 762.5 — 1,112.5 — Other 26.3 6.1 60.0 6.3 993.9 719.1 1,649.7 1,084.1 Less: Valuation allowance (739.6 ) — (1,013.4 ) — Net deferred taxes $ 254.3 $ 719.1 $ 636.3 $ 1,084.1
Schedule of Change in Unrecognized Tax Benefits	The change in the unrecognized tax benefits for the year ended May 27, 2018 was: Beginning balance on May 28, 2017 $ 39.3 Increases from positions established during prior periods 14.5 Decreases from positions established during prior periods (11.5 ) Increases from positions established during the current period 3.5 Decreases relating to settlements with taxing authorities (10.3 ) Reductions resulting from lapse of applicable statute of limitation (2.9 ) Other adjustments to liability (0.1 ) Ending balance on May 27, 2018 $ 32.5

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	May 27, 2018
Leases [Abstract]
Summary of Non-Cancellable Operating Lease Commitments	A summary of non-cancellable operating lease commitments for fiscal years following May 27, 2018 , was as follows: 2019 $ 35.6 2020 25.2 2021 22.3 2022 17.9 2023 15.8 Later years 82.3 $ 199.1

DERIVATIVE FINANCIAL INSTRUME44

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)	12 Months Ended
	May 27, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Assets and Liabilities Representing a Right to Reclaim Cash Collateral or Obligation to Return Cash Collateral	Derivative assets and liabilities and amounts representing a right to reclaim cash collateral or obligation to return cash collateral were reflected in our Consolidated Balance Sheets as follows: May 27, 2018 May 28, 2017 Prepaid expenses and other current assets $ 4.4 $ 2.3 Other accrued liabilities 0.1 1.3
Schedule of Derivative Assets and Liabilities on a Gross Basis	The following table presents our derivative assets and liabilities at May 27, 2018 , on a gross basis, prior to the setoff of $1.4 million to total derivative assets and $0.4 million to total derivative liabilities where legal right of setoff existed: Derivative Assets Derivative Liabilities Balance Sheet Location Fair Value Balance Sheet Location Fair Value Commodity contracts Prepaid expenses and other current assets $ 3.7 Other accrued liabilities $ 0.4 Foreign exchange contracts Prepaid expenses and other current assets 2.1 Other accrued liabilities — Other Prepaid expenses and other current assets — Other accrued liabilities 0.1 Total derivatives not designated as hedging instruments $ 5.8 $ 0.5 The following table presents our derivative assets and liabilities, at May 28, 2017 , on a gross basis, prior to the setoff of $0.5 million to total derivative assets and $1.4 million to total derivative liabilities where legal right of setoff existed: Derivative Assets Derivative Liabilities Balance Sheet Location Fair Value Balance Sheet Location Fair Value Commodity contracts Prepaid expenses and other current assets $ 2.6 Other accrued liabilities $ 1.4 Foreign exchange contracts Prepaid expenses and other current assets 0.2 Other accrued liabilities 1.1 Other Prepaid expenses and other current assets — Other accrued liabilities 0.2 Total derivatives not designated as hedging instruments $ 2.8 $ 2.7
Schedule of Location and Amount of Gains (Losses) from Derivatives Not Designated as Hedging Instruments	The location and amount of gains (losses) from derivatives not designated as hedging instruments in our Consolidated Statements of Operations were as follows: For the Fiscal Year Ended May 27, 2018 Derivatives Not Designated as Hedging Instruments Location in Consolidated Statement of Operations of Gain (Loss) Recognized on Derivatives Amount of Gain (Loss) Recognized on Derivatives in Consolidated Statement of Operations Commodity contracts Cost of goods sold $ 3.0 Foreign exchange contracts Cost of goods sold (3.9 ) Foreign exchange contracts Selling, general and administrative expense 0.3 Total loss from derivative instruments not designated as hedging instruments $ (0.6 ) For the Fiscal Year Ended May 28, 2017 Derivatives Not Designated as Hedging Instruments Location in Consolidated Statement of Operations of Gain (Loss) Recognized on Derivatives Amount of Gain (Loss) Recognized on Derivatives in Consolidated Statement of Operations Commodity contracts Cost of goods sold $ 0.9 Foreign exchange contracts Cost of goods sold (0.3 ) Foreign exchange contracts Selling, general and administrative expense 0.2 Total gain from derivative instruments not designated as hedging instruments $ 0.8 For the Fiscal Year Ended May 29, 2016 Derivatives Not Designated as Hedging Instruments Location in Consolidated Statement of Operations of Gain (Loss) Recognized on Derivatives Amount of Gain (Loss) Recognized on Derivatives in Consolidated Statement of Operations Commodity contracts Cost of goods sold $ (8.1 ) Foreign exchange contracts Cost of goods sold 0.7 Foreign exchange contracts Selling, general and administrative expense 2.9 Total loss from derivative instruments not designated as hedging instruments $ (4.5 )

PENSION AND POSTRETIREMENT BE45

PENSION AND POSTRETIREMENT BENEFITS (Tables)	12 Months Ended
	May 27, 2018
Retirement Benefits [Abstract]
Schedule of Changes in Benefit Obligations and Plan Assets	The changes in benefit obligations and plan assets at May 27, 2018 and May 28, 2017 are presented in the following table. Pension Benefits Other Benefits 2018 2017 2018 2017 Change in Benefit Obligation Benefit obligation at beginning of year $ 3,548.7 $ 3,903.0 $ 156.9 $ 201.7 Service cost 42.8 56.9 0.2 0.3 Interest cost 111.1 116.8 3.9 4.6 Plan participants' contributions — — 4.7 4.7 Amendments 0.6 5.5 (17.2 ) — Actuarial gain (9.4 ) (51.5 ) (13.2 ) (32.0 ) Plan settlements (10.2 ) (287.5 ) — — Special termination benefits — 1.5 — — Curtailments (79.5 ) (18.1 ) — — Benefits paid (181.3 ) (169.7 ) (16.2 ) (19.0 ) Currency 0.8 (0.8 ) 0.2 (0.2 ) Business divestitures — (7.4 ) — (3.2 ) Benefit obligation at end of year $ 3,423.6 $ 3,548.7 $ 119.3 $ 156.9 Change in Plan Assets Fair value of plan assets at beginning of year $ 2,983.6 $ 2,959.4 $ — $ 0.1 Actual return on plan assets 276.1 346.1 3.7 — Employer contributions 312.6 163.0 11.5 14.2 Plan participants' contributions — — 4.7 4.7 Plan settlements (10.2 ) (287.5 ) — — Investment and administrative expenses (26.5 ) (26.7 ) — — Benefits paid (181.3 ) (169.7 ) (16.2 ) (19.0 ) Currency 0.8 (1.0 ) — — Fair value of plan assets at end of year $ 3,355.1 $ 2,983.6 $ 3.7 $ —
Schedule of Funded Status and Amounts Recognized	The funded status and amounts recognized in our Consolidated Balance Sheets at May 27, 2018 and May 28, 2017 were: Pension Benefits Other Benefits 2018 2017 2018 2017 Funded Status $ (68.5 ) $ (565.1 ) $ (115.6 ) $ (156.9 ) Amounts Recognized in Consolidated Balance Sheets Other assets $ 103.0 $ 17.1 $ 2.6 $ — Other accrued liabilities (11.8 ) (10.9 ) (16.2 ) (18.4 ) Other noncurrent liabilities (159.7 ) (571.3 ) (102.0 ) (138.5 ) Net Amount Recognized $ (68.5 ) $ (565.1 ) $ (115.6 ) $ (156.9 ) Amounts Recognized in Accumulated Other Comprehensive (Income) Loss (Pre-tax) Actuarial net loss (gain) $ 48.8 $ 174.2 $ (25.8 ) $ (9.0 ) Net prior service cost (benefit) 13.8 16.0 (18.4 ) (4.6 ) Total $ 62.6 $ 190.2 $ (44.2 ) $ (13.6 ) Weighted-Average Actuarial Assumptions Used to Determine Benefit Obligations at May 27, 2018 and May 28, 2017 Discount rate 4.14 % 3.90 % 3.81 % 3.33 % Long-term rate of compensation increase N/A 3.63 % N/A N/A
Schedule of Projected Benefit Obligation, Accumulated Benefit Obligation, and Fair Value of Plan Assets	The projected benefit obligation, accumulated benefit obligation, and fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets at May 27, 2018 and May 28, 2017 were: 2018 2017 Projected benefit obligation $ 951.1 $ 3,433.6 Accumulated benefit obligation 950.1 3,357.1 Fair value of plan assets 779.5 2,851.4
Components of Pension Benefit and Other Postretirement Benefit Costs	Components of pension benefit and other postretirement benefit costs included: Pension Benefits Other Benefits 2018 2017 2016 2018 2017 2016 Service cost $ 42.8 $ 56.9 $ 93.8 $ 0.2 $ 0.3 $ 0.4 Interest cost 111.1 116.8 159.8 3.9 4.6 7.5 Expected return on plan assets (218.3 ) (207.4 ) (259.9 ) — — — Amortization of prior service cost (benefit) 2.9 2.6 2.7 (3.4 ) (6.6 ) (7.8 ) Special termination benefits — 1.5 25.6 — — — Recognized net actuarial loss 3.4 1.2 348.5 — 0.5 0.1 Settlement loss 1.3 13.8 — — — — Curtailment loss 0.7 1.7 0.3 — — — Benefit cost — Company plans (56.1 ) (12.9 ) 370.8 0.7 (1.2 ) 0.2 Pension benefit cost — multi-employer plans 7.1 12.0 42.9 — — — Total benefit (income) cost $ (49.0 ) $ (0.9 ) $ 413.7 $ 0.7 $ (1.2 ) $ 0.2
Schedule of Other Changes in Plan Assets and Benefit Obligations	Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) were: Pension Benefits Other Benefits 2018 2017 2018 2017 Net actuarial gain $ 120.0 $ 183.1 $ 16.8 $ 32.4 Amendments (0.6 ) (5.5 ) 17.2 (0.4 ) Amortization of prior service cost (benefit) 2.9 2.9 (3.4 ) (6.6 ) Settlement and curtailment loss 2.0 13.8 — — Recognized net actuarial loss 3.4 1.2 — 0.5 Net amount recognized $ 127.7 $ 195.5 $ 30.6 $ 25.9
Weighted Average Actuarial Assumption Used to Determine Net Expense	Weighted-Average Actuarial Assumptions Used to Determine Net Expense Pension Benefits Other Benefits 2018 2017 2016 2018 2017 2016 Discount rate 3.90 % 3.83 % 4.10 % 3.33 % 3.18 % 3.50 % Long-term rate of return on plan assets 7.50 % 7.50 % 7.75 % N/A N/A N/A Long-term rate of compensation increase 3.63 % 3.66 % 3.70 % N/A N/A N/A
Schedule of Amounts in Accumulated Other Comprehensive Income (Loss)	The amounts in accumulated other comprehensive income (loss) expected to be recognized as components of net expense during the next year are as follows: Pension Benefits Other Benefits Prior service cost (benefit) $ 2.9 $ (2.2 ) Net actuarial gain N/A (1.5 )
Schedule of Fair Value of Plan Assets, Summarized by Level	The fair value of plan assets, summarized by level within the fair value hierarchy described in Note 20, as of May 27, 2018 , was as follows: Level 1 Level 2 Level 3 Total Cash and cash equivalents $ 1.0 $ 65.0 $ — $ 66.0 Equity securities: U.S. equity securities 319.8 124.0 — 443.8 International equity securities 256.5 1.0 — 257.5 Fixed income securities: Government bonds — 1,854.8 — 1,854.8 Corporate bonds — 4.7 — 4.7 Mortgage-backed bonds — 9.3 — 9.3 Real estate funds 7.7 — — 7.7 Master limited partnerships 0.4 — — 0.4 Net payables for unsettled transactions 10.9 — — 10.9 Fair value measurement of pension plan assets in the fair value hierarchy $ 596.3 $ 2,058.8 $ — $ 2,655.1 Investments measured at net asset value 700.0 Total pension plan assets $ 3,355.1 The fair value of plan assets, summarized by level within the fair value hierarchy described in Note 20, as of May 28, 2017 , was as follows: Level 1 Level 2 Level 3 Total Cash and cash equivalents $ 1.0 $ 94.0 $ — $ 95.0 Equity securities: U.S. equity securities 494.0 13.7 — 507.7 International equity securities 249.9 13.2 — 263.1 Fixed income securities: Government bonds 51.1 224.3 — 275.4 Corporate bonds 4.4 279.5 — 283.9 Mortgage-backed bonds 63.3 6.2 — 69.5 Real estate funds 9.5 — — 9.5 Master limited partnerships 173.5 — — 173.5 Net receivables for unsettled transactions 0.7 — — 0.7 Fair value measurement of pension plan assets in the fair value hierarchy $ 1,047.4 $ 630.9 $ — $ 1,678.3 Investments measured at net asset value 1,305.3 Total pension plan assets $ 2,983.6
Schedule of Pension Plan Weighted-Average Asset Allocations and Target Asset Allocations	Our pension plan weighted-average asset allocations by asset category were as follows: May 27, 2018 May 28, 2017 Equity securities 21 % 39 % Debt securities 58 % 25 % Real estate funds 10 % 11 % Multi-strategy hedge funds 4 % 11 % Private equity 4 % 4 % Other 3 % 10 % Total 100 % 100 %
Schedule of Assumed Health Care Cost Trend Rates	Assumed health care cost trend rates have a significant effect on the benefit obligation of the postretirement plans. Assumed Health Care Cost Trend Rates at: May 27, 2018 May 28, 2017 Initial health care cost trend rate 7.87 % 8.44 % Ultimate health care cost trend rate 4.5 % 4.5 % Year that the rate reaches the ultimate trend rate 2024 2024
Schedule of the Effect of a One Percentage Point Change in Assumed Health Care Cost Rates	A one percentage point change in assumed health care cost rates would have the following effect: One Percent Increase One Percent Decrease Effect on total service and interest cost $ 0.3 $ (0.3 ) Effect on postretirement benefit obligation 3.9 (3.5 )
Schedule of Estimated Future Gross Benefit Payments	The following table presents estimated future gross benefit payments for our plans: Pension Benefits Health Care and Life Insurance Benefits 2019 $ 188.7 $ 16.4 2020 184.2 14.7 2021 186.5 13.4 2022 189.0 12.1 2023 191.3 11.0 Succeeding 5 years 980.7 40.1
Schedule of Contributions for Plans That Are Not Individually Significant	For plans that are not individually significant to Conagra Brands the total amount of contributions is presented in the aggregate. Pension Protection Act Zone Status FIP / Contributions by the Company (millions) Expiration Dates of Collective Bargaining Agreements Pension Fund EIN / PN 2017 2016 FY18 FY17 FY16 Surcharge Imposed Bakery and Confectionary Union and Industry International Pension Plan 52-6118572 Red, Critical and Declining Red, Critical and Declining RP Implemented $ 1.5 $ 1.8 $3.1 No 2/28/2020 Central States, Southeast and Southwest Areas Pension Fund 36-6044243 Red, Critical and Declining Red RP Implemented 1.8 1.8 1.9 No 5/31/2020 Western Conference of Teamsters Pension Plan 91-6145047 Green Green N/A 2.8 4.0 5.4 No 06/30/2018 Other Plans 0.4 0.4 0.7 Total Contributions $ 6.5 $8.0 $11.1

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	12 Months Ended
	May 27, 2018
Fair Value Disclosures [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value	The following table presents our financial assets and liabilities measured at fair value on a recurring basis based upon the level within the fair value hierarchy in which the fair value measurements fall, as of May 27, 2018 : Level 1 Level 2 Level 3 Total Assets: Derivative assets $ 1.7 $ 2.7 $ — $ 4.4 Available-for-sale securities 4.8 — — 4.8 Total assets $ 6.5 $ 2.7 $ — $ 9.2 Liabilities: Derivative liabilities $ — $ 0.1 $ — $ 0.1 Deferred compensation liabilities 51.6 — — 51.6 Total liabilities $ 51.6 $ 0.1 $ — $ 51.7 The following table presents our financial assets and liabilities measured at fair value on a recurring basis based upon the level within the fair value hierarchy in which the fair value measurements fall, as of May 28, 2017 : Level 1 Level 2 Level 3 Total Assets: Derivative assets $ 2.0 $ 0.3 $ — $ 2.3 Available-for-sale securities 3.5 — — 3.5 Total assets $ 5.5 $ 0.3 $ — $ 5.8 Liabilities: Derivative liabilities $ — $ 1.3 $ — $ 1.3 Deferred compensation liabilities 47.2 — — 47.2 Total liabilities $ 47.2 $ 1.3 $ — $ 48.5

BUSINESS SEGMENTS AND RELATED47

BUSINESS SEGMENTS AND RELATED INFORMATION (Tables)	12 Months Ended
	May 27, 2018
Segment Reporting [Abstract]
Schedule of Segment Operations	2018 2017 2016 Net sales Grocery & Snacks $ 3,287.0 $ 3,208.8 $ 3,377.1 Refrigerated & Frozen 2,753.0 2,652.7 2,867.8 International 843.5 816.0 846.6 Foodservice 1,054.8 1,078.3 1,104.5 Commercial — 71.1 468.1 Total net sales $ 7,938.3 $ 7,826.9 $ 8,664.1 Operating profit Grocery & Snacks $ 724.8 $ 653.7 $ 592.9 Refrigerated & Frozen 479.4 445.8 420.4 International 86.5 (168.9 ) 66.7 Foodservice 121.8 105.1 97.7 Commercial — 202.6 45.4 Total operating profit $ 1,412.5 $ 1,238.3 $ 1,223.1 Equity method investment earnings 97.3 71.2 66.1 General corporate expenses 379.0 313.3 818.5 Interest expense, net 158.7 195.5 295.8 Income tax expense 174.6 254.7 46.4 Income from continuing operations $ 797.5 $ 546.0 $ 128.5 Less: Net income attributable to noncontrolling interests of continuing operations 3.4 1.9 1.9 Income from continuing operations attributable to Conagra Brands, Inc. $ 794.1 $ 544.1 $ 126.6
Schedule of Net Sales by Product Type	Net sales by product type were: 2018 2017 2016 Shelf-stable $ 4,660.1 $ 4,682.4 $ 5,256.8 Temperature-controlled 3,278.2 3,144.5 3,407.3 Total net sales $ 7,938.3 $ 7,826.9 $ 8,664.1
Schedule of Net Derivative Gains (Losses) from Economic Hedges	The following table presents the net derivative gains (losses) from economic hedges of forecasted commodity consumption and the foreign currency risk of certain forecasted transactions, under this methodology: 2018 2017 2016 Net derivative gains (losses) incurred $ (0.9 ) $ 0.6 $ (7.4 ) Less: Net derivative gains (losses) allocated to reporting segments (7.1 ) 5.7 (23.8 ) Net derivative gains (losses) recognized in general corporate expenses $ 6.2 $ (5.1 ) $ 16.4 Net derivative gains (losses) allocated to Grocery & Snacks $ 0.2 $ 3.4 $ (14.4 ) Net derivative gains (losses) allocated to Refrigerated & Frozen (0.3 ) 0.8 (6.2 ) Net derivative gains (losses) allocated to International (6.9 ) 1.6 (0.5 ) Net derivative losses allocated to Foodservice (0.1 ) — (1.0 ) Net derivative losses allocated to Commercial — (0.1 ) (1.7 ) Net derivative gains (losses) included in segment operating profit $ (7.1 ) $ 5.7 $ (23.8 )

QUARTERLY FINANCIAL DATA (Una48

QUARTERLY FINANCIAL DATA (Unaudited) (Tables)	12 Months Ended
	May 27, 2018
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Data	2018 2017 First Quarter Second Quarter Third Quarter Fourth Quarter First Quarter Second Quarter Third Quarter Fourth Quarter Net sales $ 1,804.2 $ 2,173.4 $ 1,994.5 $ 1,966.2 $ 1,895.6 $ 2,088.4 $ 1,981.2 $ 1,861.7 Gross profit 519.0 658.3 598.8 575.4 544.6 647.5 621.0 529.0 Income from continuing operations, net of tax 153.6 224.1 349.2 70.6 98.6 114.3 179.5 153.6 Income (loss) from discontinued operations, net of tax (0.3 ) 0.4 14.5 (0.3 ) 91.4 11.6 0.7 (1.7 ) Net income attributable to Conagra Brands, Inc. 152.5 223.5 362.8 69.6 186.2 122.1 179.7 151.3 Earnings per share (1) : Basic earnings per share: Net income attributable to Conagra Brands, Inc. common stockholders $ 0.37 $ 0.55 $ 0.91 $ 0.18 $ 0.42 $ 0.28 $ 0.42 $ 0.36 Diluted earnings per share: Net income attributable to Conagra Brands, Inc. common stockholders $ 0.36 $ 0.54 $ 0.90 $ 0.18 $ 0.42 $ 0.28 $ 0.41 $ 0.36 Dividends declared per common share (3) $ 0.2125 $ 0.2125 $ 0.2125 $ 0.2125 $ 0.25 $ 0.25 $ 0.20 $ 0.20 Share price (2) : High $ 39.95 $ 35.87 $ 38.50 $ 38.29 $ 48.39 $ 48.68 $ 41.16 $ 41.50 Low 33.07 32.43 35.47 35.34 45.70 34.30 36.47 37.29 (1) Basic and diluted earnings per share are calculated independently for each of the quarters presented. Accordingly, the sum of the quarterly earnings per share amounts may not agree with the total year. (2) Historical market prices do not reflect any adjustment for the impact of the Lamb Weston Spinoff. (3) Per share dividend declared in the third quarter and fourth quarter of fiscal 2017 includes impact of the Lamb Weston Spinoff.

SUMMARY OF SIGNIFICANT ACCOUN49

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Basis of Consolidation (Narrative) (Details)	Nov. 09, 2016
Lamb Weston | Spinoff
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Distribution of interest in Lamb Weston (as a percent)	100.00%

SUMMARY OF SIGNIFICANT ACCOUN50

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Balances of Allowance for Doubtful Accounts and Changes Therein (Details) - Allowance for doubtful receivables - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Movement in Valuation Allowances and Reserves
Balance at Beginning of Period	$ 3.1	$ 3.2	$ 3
Additions Charged to Costs and Expenses	0.8	1	1.1
Other	0	0	(0.1)
Deductions from Reserves	1.9	1.1	0.8
Balance at Close of Period	$ 2	$ 3.1	$ 3.2

SUMMARY OF SIGNIFICANT ACCOUN51

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Estimated Useful Lives of Property, Plant and Equipment (Details)	12 Months Ended
	May 27, 2018
Land improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	1 year
Land improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	15 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	20 years
Furniture, fixtures, office equipment and other | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Furniture, fixtures, office equipment and other | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	15 years

SUMMARY OF SIGNIFICANT ACCOUN52

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Marketing Costs (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Accounting Policies [Abstract]
Advertising and promotion expenses	$ 278.6	$ 328.3	$ 347.2

SUMMARY OF SIGNIFICANT ACCOUN53

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Research and Development (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Accounting Policies [Abstract]
Incurred expenses for research and development activities	$ 47.3	$ 44.6	$ 59.6

SUMMARY OF SIGNIFICANT ACCOUN54

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Accumulated Balances for Each Component of Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016	May 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	$ 3,756.6	$ 4,077.8	$ 3,794.8	$ 4,610
Retained Earnings
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	4,744.9	4,247	3,218.3	4,331.1
Accumulated other comprehensive loss 1
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(110.5)	(212.9)	(344.5)	$ (329.5)
Currency translation losses, net of reclassification adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(94.7)	(98.6)	(95.2)
Derivative adjustments, net of reclassification adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	1	(1.1)	(0.4)
Unrealized gains (losses) on available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	0.6	(0.3)	(0.6)
Pension and post-employment benefit obligations, net of reclassification adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(17.4)	$ (112.9)	$ (248.3)
ASU 2018-02 | Retained Earnings
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stranded tax effects from change in tax rate	$ 17.4

SUMMARY OF SIGNIFICANT ACCOUN55

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Reclassifications from Accumulated Other Comprehensive Loss into Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	May 27, 2018	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	May 28, 2017	Feb. 26, 2017	Nov. 27, 2016	Aug. 28, 2016	May 27, 2018	May 28, 2017	May 29, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest expense, net									$ (158.7)	$ (195.5)	$ (295.8)
Selling, general and administrative expenses									1,318	1,417.1	2,024.6
Income (loss) from discontinued operations, net of tax	$ (0.3)	$ 14.5	$ 0.4	$ (0.3)	$ (1.7)	$ 0.7	$ 11.6	$ 91.4	14.3	102	(794.4)
Equity method investment earnings									97.3	71.2	66.1
Total before tax									972.1	800.7	174.9
Income tax expense									(174.6)	(254.7)	(46.4)
Net income (loss) attributable to Conagra Brands, Inc.	$ 69.6	$ 362.8	$ 223.5	$ 152.5	$ 151.3	$ 179.7	$ 122.1	$ 186.2	808.4	639.3	(677)
Reclassification out of Accumulated Other Comprehensive Income | Cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest expense, net									0.1	(0.2)	(2.1)
Total before tax									0.1	(0.2)	(2.1)
Income tax expense									0	0.1	0.8
Net income (loss) attributable to Conagra Brands, Inc.									0.1	(0.1)	(1.3)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of pension and postretirement healthcare liabilities:
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total before tax									0.9	10.4	(14.5)
Income tax expense									(0.2)	(4)	4.9
Net income (loss) attributable to Conagra Brands, Inc.									0.7	6.4	(9.6)
Reclassification out of Accumulated Other Comprehensive Income | Net prior service benefit
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses									(0.4)	(3.9)	(5.1)
Reclassification out of Accumulated Other Comprehensive Income | Divestiture of Private Brands
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Income (loss) from discontinued operations, net of tax									0	0	(4.3)
Reclassification out of Accumulated Other Comprehensive Income | Pension settlement of equity method investee
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Equity method investment earnings									0	0	(5.2)
Reclassification out of Accumulated Other Comprehensive Income | Pension settlement
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses									1.3	13.8	0
Reclassification out of Accumulated Other Comprehensive Income | Net actuarial loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Selling, general and administrative expenses									0	0.5	0.1
Reclassification out of Accumulated Other Comprehensive Income | Currency translation losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Income (loss) from discontinued operations, net of tax									0	0	73.4
Total before tax									0	0	73.4
Income tax expense									0	0	0
Net income (loss) attributable to Conagra Brands, Inc.									$ 0	$ 0	$ 73.4

SUMMARY OF SIGNIFICANT ACCOUN56

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Foreign Currency Transaction Gains and Losses (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Accounting Policies [Abstract]
Net foreign currency transaction losses from continuing operations	$ 1.4	$ 1.5	$ 5.1

SUMMARY OF SIGNIFICANT ACCOUN57

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounting Changes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
ASU 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated reclassification impact of benefit (expense) upon adoption of ASU	$ 80.4	$ 55.2	$ 303.8
Retained earnings | ASU 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stranded tax effects from change in tax rate	$ 17.4

ACQUISITIONS (Details)

ACQUISITIONS (Details) $ / shares in Units, $ in Millions	1 Months Ended				6 Months Ended	12 Months Ended
	Feb. 25, 2018USD ($)	Oct. 31, 2017USD ($)	Apr. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Dec. 31, 2018USD ($)$ / shares	May 27, 2018USD ($)	May 28, 2017USD ($)	Feb. 28, 2018USD ($)	May 29, 2016USD ($)
Business Acquisitions [Line Items]
Classified as goodwill						$ 4,502.5	$ 4,295.3		$ 4,315.9
Sandwich Bros. of Wisconsin
Business Acquisitions [Line Items]
Cash payment for acquisition, net of cash acquired	$ 87.3
Classified as goodwill								$ 57.8
Classified as non-amortizing intangible assets								9.7
Classified as amortizing intangible asset								$ 7.1
Angie's Artisan Treats, LLC
Business Acquisitions [Line Items]
Cash payment for acquisition, net of cash acquired		$ 249.8
Classified as goodwill		155.2
Amount deductible for income tax purposes		95.4
Classified as non-amortizing intangible assets		73.8
Classified as amortizing intangible asset		$ 10.3
Thanasi Foods, LLC and BIGS LLC
Business Acquisitions [Line Items]
Cash payment for acquisition, net of cash acquired			$ 217.6
Classified as goodwill			133.3
Amount deductible for income tax purposes			70.5
Classified as non-amortizing intangible assets			65.1
Classified as amortizing intangible asset			$ 16.1
Frontera Foods, Inc. and Red Fork LLC
Business Acquisitions [Line Items]
Cash payment for acquisition, net of cash acquired				$ 108.1
Classified as goodwill				39.5
Classified as non-amortizing intangible assets				59.5
Classified as amortizing intangible asset				$ 7.2
Frontera acquisition and Thanasi acquisition
Business Acquisitions [Line Items]
Net sales						$ 214.3	$ 36.5
Expected | Pinnacle Foods Inc. (Pinnacle)
Business Acquisitions [Line Items]
Value of merger agreement					$ 10,900
Cash to be received by Pinnacle shareholders for each share (in usd per share) | $ / shares					$ 43.11
Common stock to be received by Pinnacle shareholders for each share of Pinnacle (shares)					0.6494
Implied price per share of Pinnacle under agreement (in usd per share) | $ / shares					$ 68

RESTRUCTURING ACTIVITIES - Narr

RESTRUCTURING ACTIVITIES - Narrative (Details) - USD ($)	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Private Brands
Restructuring Cost and Reserve [Line Items]
Cash charges excluded from cumulative pre-tax expenses	$ 84,500,000
Non-cash charges excluded from cumulative pre-tax expenses	45,700,000
Charges excluded from cumulative pre-tax expenses	130,200,000
Spinoff | Lamb Weston
Restructuring Cost and Reserve [Line Items]
Cash charges excluded from cumulative pre-tax expenses	2,100,000
SCAE Plan
Restructuring Cost and Reserve [Line Items]
Approved expenses (up to)	900,900,000
Charges incurred or expected to be incurred	471,600,000
Cash charges	322,100,000
Non-cash charges	149,500,000
Restructuring and related cost, incurred cost	38,000,000	$ 63,600,000	$ 281,800,000
Charges that have resulted or will result in cash outflows	30,600,000
Non-cash charges anticipated to be recognized	7,400,000
Cash charges excluded from cumulative pre-tax expenses	316,100,000
Non-cash charges excluded from cumulative pre-tax expenses	$ 144,200,000

RESTRUCTURING ACTIVITIES - Sche

RESTRUCTURING ACTIVITIES - Schedule of Pre-Tax Expenses in Association with the SCAE Plan (Details) - SCAE Plan - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	$ 471.6
Pre-tax expenses recognized	38	$ 63.6	$ 281.8
Cumulative pre-tax expenses recognized	460.3
Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	105.7
Pre-tax expenses recognized	7.8
Cumulative pre-tax expenses recognized	100.1
Pension costs
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	34.9
Pre-tax expenses recognized	0.5
Cumulative pre-tax expenses recognized	34.9
Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	56.8
Pre-tax expenses recognized	2
Cumulative pre-tax expenses recognized	52.8
Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	14
Pre-tax expenses recognized	5.3
Cumulative pre-tax expenses recognized	12.4
Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	365.9
Pre-tax expenses recognized	30.2
Cumulative pre-tax expenses recognized	360.2
Severance and related costs, net
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	152
Pre-tax expenses recognized	4.5
Cumulative pre-tax expenses recognized	150.6
Fixed asset impairment (net of gains on disposal)
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	24.2
Pre-tax expenses recognized	3.2
Cumulative pre-tax expenses recognized	24.2
Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	4.1
Pre-tax expenses recognized	1.5
Cumulative pre-tax expenses recognized	4.1
Contract/lease cancellation expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	86.9
Pre-tax expenses recognized	13.5
Cumulative pre-tax expenses recognized	86.8
Consulting/professional fees
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	55.5
Pre-tax expenses recognized	1.1
Cumulative pre-tax expenses recognized	53.7
Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	43.2
Pre-tax expenses recognized	6.4
Cumulative pre-tax expenses recognized	40.8
Reporting segments | Grocery & Snacks
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	134.3
Pre-tax expenses recognized	14.1
Cumulative pre-tax expenses recognized	127.1
Reporting segments | Grocery & Snacks | Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	82.3
Pre-tax expenses recognized	7.8
Cumulative pre-tax expenses recognized	76.7
Reporting segments | Grocery & Snacks | Pension costs
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	33.4
Pre-tax expenses recognized	0.5
Cumulative pre-tax expenses recognized	33.4
Reporting segments | Grocery & Snacks | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	37
Pre-tax expenses recognized	2
Cumulative pre-tax expenses recognized	33
Reporting segments | Grocery & Snacks | Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	11.9
Pre-tax expenses recognized	5.3
Cumulative pre-tax expenses recognized	10.3
Reporting segments | Grocery & Snacks | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	52
Pre-tax expenses recognized	6.3
Cumulative pre-tax expenses recognized	50.4
Reporting segments | Grocery & Snacks | Severance and related costs, net
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	27.5
Pre-tax expenses recognized	2.6
Cumulative pre-tax expenses recognized	26.5
Reporting segments | Grocery & Snacks | Fixed asset impairment (net of gains on disposal)
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	6.1
Pre-tax expenses recognized	(1.2)
Cumulative pre-tax expenses recognized	6.1
Reporting segments | Grocery & Snacks | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | Grocery & Snacks | Contract/lease cancellation expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	1
Pre-tax expenses recognized	0.2
Cumulative pre-tax expenses recognized	1
Reporting segments | Grocery & Snacks | Consulting/professional fees
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	1
Pre-tax expenses recognized	0.1
Cumulative pre-tax expenses recognized	1
Reporting segments | Grocery & Snacks | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	16.4
Pre-tax expenses recognized	4.6
Cumulative pre-tax expenses recognized	15.8
Reporting segments | Refrigerated & Frozen
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	43.7
Pre-tax expenses recognized	0.1
Cumulative pre-tax expenses recognized	43.7
Reporting segments | Refrigerated & Frozen | Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	22.2
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	22.2
Reporting segments | Refrigerated & Frozen | Pension costs
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	1.5
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	1.5
Reporting segments | Refrigerated & Frozen | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	18.6
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	18.6
Reporting segments | Refrigerated & Frozen | Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	2.1
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	2.1
Reporting segments | Refrigerated & Frozen | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	21.5
Pre-tax expenses recognized	0.1
Cumulative pre-tax expenses recognized	21.5
Reporting segments | Refrigerated & Frozen | Severance and related costs, net
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	10.3
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	10.3
Reporting segments | Refrigerated & Frozen | Fixed asset impairment (net of gains on disposal)
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	6.9
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	6.9
Reporting segments | Refrigerated & Frozen | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | Refrigerated & Frozen | Contract/lease cancellation expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0.6
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0.6
Reporting segments | Refrigerated & Frozen | Consulting/professional fees
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0.4
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0.4
Reporting segments | Refrigerated & Frozen | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	3.3
Pre-tax expenses recognized	0.1
Cumulative pre-tax expenses recognized	3.3
Reporting segments | International
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	4.7
Pre-tax expenses recognized	1.5
Cumulative pre-tax expenses recognized	4.7
Reporting segments | International | Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | International | Pension costs
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | International | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | International | Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | International | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	4.7
Pre-tax expenses recognized	1.5
Cumulative pre-tax expenses recognized	4.7
Reporting segments | International | Severance and related costs, net
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	3.7
Pre-tax expenses recognized	1.2
Cumulative pre-tax expenses recognized	3.7
Reporting segments | International | Fixed asset impairment (net of gains on disposal)
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | International | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | International | Contract/lease cancellation expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0.9
Pre-tax expenses recognized	0.3
Cumulative pre-tax expenses recognized	0.9
Reporting segments | International | Consulting/professional fees
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0.1
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0.1
Reporting segments | International | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | Foodservice
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	7.9
Cumulative pre-tax expenses recognized	7.9
Reporting segments | Foodservice | Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | Foodservice | Pension costs
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | Foodservice | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | Foodservice | Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | Foodservice | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	7.9
Cumulative pre-tax expenses recognized	7.9
Reporting segments | Foodservice | Severance and related costs, net
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	7.9
Cumulative pre-tax expenses recognized	7.9
Reporting segments | Foodservice | Fixed asset impairment (net of gains on disposal)
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | Foodservice | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | Foodservice | Contract/lease cancellation expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | Foodservice | Consulting/professional fees
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Cumulative pre-tax expenses recognized	0
Reporting segments | Foodservice | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Cumulative pre-tax expenses recognized	0
Corporate
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	281
Pre-tax expenses recognized	22.3
Cumulative pre-tax expenses recognized	276.9
Corporate | Total cost of goods sold
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	1.2
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	1.2
Corporate | Pension costs
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0
Corporate | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	1.2
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	1.2
Corporate | Other cost of goods sold
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	0
Pre-tax expenses recognized	0
Cumulative pre-tax expenses recognized	0
Corporate | Total selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	279.8
Pre-tax expenses recognized	22.3
Cumulative pre-tax expenses recognized	275.7
Corporate | Severance and related costs, net
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	102.6
Pre-tax expenses recognized	0.7
Cumulative pre-tax expenses recognized	102.2
Corporate | Fixed asset impairment (net of gains on disposal)
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	11.2
Pre-tax expenses recognized	4.4
Cumulative pre-tax expenses recognized	11.2
Corporate | Accelerated depreciation
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	4.1
Pre-tax expenses recognized	1.5
Cumulative pre-tax expenses recognized	4.1
Corporate | Contract/lease cancellation expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	84.4
Pre-tax expenses recognized	13
Cumulative pre-tax expenses recognized	84.3
Corporate | Consulting/professional fees
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	54
Pre-tax expenses recognized	1
Cumulative pre-tax expenses recognized	52.2
Corporate | Other selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Pre-tax expenses anticipated to be recognized	23.5
Pre-tax expenses recognized	1.7
Cumulative pre-tax expenses recognized	$ 21.7

RESTRUCTURING ACTIVITIES - Sc61

RESTRUCTURING ACTIVITIES - Schedule of Liabilities Recorded for the SCAE Plan (Details) - SCAE Plan $ in Millions	12 Months Ended
	May 27, 2018USD ($)
Restructuring Reserve
Beginning balance	$ 59.7
Costs Incurred and Charged to Expense	31.5
Costs Paid or Otherwise Settled	(46.5)
Changes in Estimates	(0.9)
Ending balance	43.8
Pension costs
Restructuring Reserve
Beginning balance	31.8
Costs Incurred and Charged to Expense	0
Costs Paid or Otherwise Settled	0
Changes in Estimates	0.5
Ending balance	32.3
Severance and related costs
Restructuring Reserve
Beginning balance	13.8
Costs Incurred and Charged to Expense	5.7
Costs Paid or Otherwise Settled	(12)
Changes in Estimates	(1.2)
Ending balance	6.3
Consulting/professional fees
Restructuring Reserve
Beginning balance	0.6
Costs Incurred and Charged to Expense	1.1
Costs Paid or Otherwise Settled	(1.6)
Changes in Estimates	0
Ending balance	0.1
Contract/lease cancellation
Restructuring Reserve
Beginning balance	11.6
Costs Incurred and Charged to Expense	13.7
Costs Paid or Otherwise Settled	(20.2)
Changes in Estimates	(0.2)
Ending balance	4.9
Other costs
Restructuring Reserve
Beginning balance	1.9
Costs Incurred and Charged to Expense	11
Costs Paid or Otherwise Settled	(12.7)
Changes in Estimates	0
Ending balance	$ 0.2

LONG-TERM DEBT - Schedule of Lo

LONG-TERM DEBT - Schedule of Long-Term Debt Instruments (Details) - USD ($)	12 Months Ended
	May 27, 2018	Nov. 26, 2017	May 28, 2017
Debt Instrument [Line Items]
Total face value of debt	$ 3,526,400,000		$ 2,952,500,000
Unamortized fair value adjustment	27,600,000		30,800,000
Unamortized discounts	(5,800,000)		(6,400,000)
Unamortized debt issuance costs	(11,300,000)		(10,900,000)
Adjustment due to hedging activity	1,600,000		2,200,000
Less current installments	(307,000,000)		(199,000,000)
Total long-term debt	$ 3,231,500,000		2,769,200,000
LIBOR plus 0.50% senior debt due October 2020
Debt Instrument [Line Items]
Total face value of debt		$ 500,000,000
LIBOR | LIBOR plus 0.50% senior debt due October 2020
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.50%
Senior debt | 4.65% senior debt due January 2043
Debt Instrument [Line Items]
Stated interest rate (percent)	4.65%
Total face value of debt	$ 176,700,000		176,700,000
Senior debt | 6.625% senior debt due August 2039
Debt Instrument [Line Items]
Stated interest rate (percent)	6.625%
Total face value of debt	$ 91,400,000		91,400,000
Senior debt | 8.25% senior debt due September 2030
Debt Instrument [Line Items]
Stated interest rate (percent)	8.25%
Total face value of debt	$ 300,000,000		300,000,000
Senior debt | 7.0% senior debt due October 2028
Debt Instrument [Line Items]
Stated interest rate (percent)	7.00%
Total face value of debt	$ 382,200,000		382,200,000
Senior debt | 6.7% senior debt due August 2027
Debt Instrument [Line Items]
Stated interest rate (percent)	6.70%
Total face value of debt	$ 9,200,000		9,200,000
Senior debt | 7.125% senior debt due October 2026
Debt Instrument [Line Items]
Stated interest rate (percent)	7.125%
Total face value of debt	$ 262,500,000		262,500,000
Senior debt | 3.2% senior debt due January 2023
Debt Instrument [Line Items]
Stated interest rate (percent)	3.20%
Total face value of debt	$ 837,000,000		837,000,000
Senior debt | 3.25% senior debt due September 2022
Debt Instrument [Line Items]
Stated interest rate (percent)	3.25%
Total face value of debt	$ 250,000,000		250,000,000
Senior debt | LIBOR plus 0.50% senior debt due October 2020
Debt Instrument [Line Items]
Total face value of debt	$ 500,000,000		0
Senior debt | 4.95% senior debt due August 2020
Debt Instrument [Line Items]
Stated interest rate (percent)	4.95%
Total face value of debt	$ 126,600,000		126,600,000
Senior debt | 2.1% senior debt due March 2018
Debt Instrument [Line Items]
Stated interest rate (percent)	2.10%
Total face value of debt	$ 0		70,000,000
Senior debt | 1.9% senior debt due January 2018
Debt Instrument [Line Items]
Stated interest rate (percent)	1.90%
Total face value of debt	$ 0		119,600,000
Senior debt | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.50%
Subordinated debt | 9.75% subordinated debt due March 2021
Debt Instrument [Line Items]
Stated interest rate (percent)	9.75%
Total face value of debt	$ 195,900,000		195,900,000
Term loan | LIBOR plus 0.75% term loan due February 2019
Debt Instrument [Line Items]
Total face value of debt	$ 300,000,000		0
Term loan | LIBOR | LIBOR plus 0.75% term loan due February 2019
Debt Instrument [Line Items]
Basis spread on variable rate (percent)	0.75%
Lease financing obligations | 2.00% to 9.59% lease financing obligations due on various dates through 2033
Debt Instrument [Line Items]
Total face value of debt	$ 94,700,000		131,200,000
Lease financing obligations | 2.00% to 9.59% lease financing obligations due on various dates through 2033 | Minimum
Debt Instrument [Line Items]
Stated interest rate (percent)	2.00%
Lease financing obligations | 2.00% to 9.59% lease financing obligations due on various dates through 2033 | Maximum
Debt Instrument [Line Items]
Stated interest rate (percent)	9.59%
Other indebtedness | Other indebtedness
Debt Instrument [Line Items]
Total face value of debt	$ 200,000		$ 200,000

LONG-TERM DEBT - Schedule of Ag

LONG-TERM DEBT - Schedule of Aggregate Minimum Principal Maturities of Long-Term Debt (Details) $ in Millions	May 27, 2018USD ($)
Debt Disclosure [Abstract]
2,019	$ 307.1
2,020	6.7
2,021	829.4
2,022	6.9
2,023	$ 1,093.6

LONG-TERM DEBT - Narrative (Det

LONG-TERM DEBT - Narrative (Details)

Jun. 26, 2018USD ($)

Mar. 15, 2018USD ($)

Jan. 25, 2018USD ($)

Nov. 09, 2016USD ($)

May 27, 2018USD ($)

Feb. 25, 2018USD ($)

Feb. 26, 2017USD ($)

Aug. 28, 2016USD ($)

Feb. 28, 2016USD ($)

Nov. 29, 2015USD ($)

May 27, 2018USD ($)

May 28, 2017USD ($)

May 29, 2016USD ($)

Jul. 11, 2018USD ($)

Nov. 26, 2017USD ($)

Debt Instrument [Line Items]

Repayments of long-term debt

$ 242,300,000

$ 1,064,500,000

$ 2,523,200,000

Repayment of remaining capital lease liability balance

$ 28,500,000

Aggregate principal amount issued

$ 3,526,400,000

3,526,400,000

2,952,500,000

Net loss on early retirement of debt

0

93,300,000

23,900,000

Issuance of term loans

$ 600,000,000

Interest paid from continuing operations

$ 164,500,000

223,700,000

322,000,000

Required ratio of EBITDA to interest expense (not less than)

3

3

Required ratio of funded debt to EBITDA (not greater than)

3.75

3.75

Senior notes

Debt Instrument [Line Items]

Net loss on early retirement of debt

$ 60,600,000

5.819% senior notes due 2017 | Senior notes

Debt Instrument [Line Items]

Aggregate principal amount of notes exchanged

250,200,000

7.0% senior notes due 2019 | Senior notes

Debt Instrument [Line Items]

Aggregate principal amount of notes exchanged

86,900,000

1.9% senior notes due 2018 | Senior notes

Debt Instrument [Line Items]

Aggregate principal amount of notes exchanged

880,400,000

LIBOR plus 0.50% senior debt due October 2020

Debt Instrument [Line Items]

Aggregate principal amount issued

$ 500,000,000

LIBOR plus 0.50% senior debt due October 2020 | LIBOR

Debt Instrument [Line Items]

Basis spread on variable rate (percent)

0.50%

2.1% senior notes due 2018 | Senior notes

Debt Instrument [Line Items]

Aggregate principal amount of notes exchanged

154,900,000

4.95% senior notes due 2020 | Senior notes

Debt Instrument [Line Items]

Aggregate principal amount of notes exchanged

$ 71,100,000

Senior notes

Debt Instrument [Line Items]

Net loss on early retirement of debt

$ 32,700,000

23,900,000

Senior notes | LIBOR

Debt Instrument [Line Items]

Basis spread on variable rate (percent)

0.50%

Senior notes | 5.819% senior notes due 2017

Debt Instrument [Line Items]

Repayments of long-term debt

$ 224,800,000

Stated interest rate (percent)

5.819%

5.819%

Senior notes | 7.0% senior notes due 2019

Debt Instrument [Line Items]

Repayments of long-term debt

$ 248,200,000

Stated interest rate (percent)

7.00%

7.00%

Senior notes | 1.9% senior notes due 2018

Debt Instrument [Line Items]

Repayments of long-term debt

$ 119,600,000

Stated interest rate (percent)

1.90%

1.90%

Senior notes | LIBOR plus 0.50% senior debt due October 2020

Debt Instrument [Line Items]

Aggregate principal amount issued

$ 500,000,000

$ 500,000,000

$ 0

Senior notes | 2.1% senior notes due 2018

Debt Instrument [Line Items]

Repayments of long-term debt

$ 70,000,000

Stated interest rate (percent)

2.10%

2.10%

Senior notes | 4.95% senior notes due 2020

Debt Instrument [Line Items]

Stated interest rate (percent)

4.95%

Senior notes | Senior notes due 2043

Debt Instrument [Line Items]

Aggregate principal amount of senior notes repurchased

560,300,000

Senior notes | Senior notes due 2039

Debt Instrument [Line Items]

Aggregate principal amount of senior notes repurchased

341,800,000

Senior notes | Senior notes due 2019

Debt Instrument [Line Items]

Aggregate principal amount of senior notes repurchased

139,900,000

Senior notes | Senior notes due 2026

Debt Instrument [Line Items]

Aggregate principal amount of senior notes repurchased

110,000,000

Senior notes | Senior notes due 2020

Debt Instrument [Line Items]

Aggregate principal amount of senior notes repurchased

85,000,000

Senior notes | Senior notes due 2023

Debt Instrument [Line Items]

Aggregate principal amount of senior notes repurchased

$ 163,000,000

Senior notes | 1.30% senior notes

Debt Instrument [Line Items]

Stated interest rate (percent)

1.30%

Principal balance repaid on senior notes

$ 750,000,000

Senior notes | 1.35% senior notes

Debt Instrument [Line Items]

Repayments of long-term debt

$ 250,000,000

Stated interest rate (percent)

1.35%

Floating rate notes

Debt Instrument [Line Items]

Principal balance repaid on floating rate notes

$ 550,000,000

Ralcorp

Debt Instrument [Line Items]

Net loss on early retirement of debt

5,400,000

Repayment of senior notes issued by Ralcorp

$ 33,900,000

$ 33,900,000

Ralcorp | Senior notes | Senior notes due 2039

Debt Instrument [Line Items]

Stated interest rate (percent)

6.625%

Repayment of senior notes issued by Ralcorp

$ 16,700,000

Ralcorp | Senior notes | Senior notes due 2020

Debt Instrument [Line Items]

Stated interest rate (percent)

4.95%

Repayment of senior notes issued by Ralcorp

$ 17,200,000

Spinoff | Lamb Weston

Debt Instrument [Line Items]

Lamb Weston notes

$ 1,540,000,000

Term Loan Credit Agreement

Debt Instrument [Line Items]

Aggregate principal amount (in excess of)

$ 300,000,000

Borrowings under term loan agreement

$ 300,000,000

Term Loan Credit Agreement | LIBOR

Debt Instrument [Line Items]

Basis spread on variable rate (percent)

0.75%

Pinnacle Foods Inc. (Pinnacle) | Subsequent event | Bridge Financing

Debt Instrument [Line Items]

Aggregate principal amount (in excess of)

$ 9,000,000,000

Pinnacle Foods Inc. (Pinnacle) | Subsequent event | Term loan

Debt Instrument [Line Items]

Aggregate principal amount (in excess of)

$ 1,300,000,000

Required ratio of EBITDA to interest expense (not less than)

3

Expected | Pinnacle Foods Inc. (Pinnacle)

Debt Instrument [Line Items]

Aggregate amount of long-term debt expected to be incurred

8,300,000,000

Incremental cash proceeds expected from issuance of equity and/or divestitures

$ 600,000,000

LONG-TERM DEBT - Schedule of Ne

LONG-TERM DEBT - Schedule of Net Interest Expense (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Debt Disclosure [Abstract]
Long-term debt	$ 161.2	$ 203.6	$ 302.9
Short-term debt	4.8	0.6	1.9
Interest income	(3.8)	(3.7)	(1.2)
Interest capitalized	(3.5)	(5)	(7.8)
Net interest expense	$ 158.7	$ 195.5	$ 295.8

CREDIT FACILITIES AND BORROWI66

CREDIT FACILITIES AND BORROWINGS (Details)	Jul. 11, 2018USD ($)	May 27, 2018USD ($)	May 28, 2017USD ($)	Feb. 16, 2017
Line of Credit Facility [Line Items]
Required ratio of EBITDA to interest expense (not less than)		3
Required ratio of funded debt to EBITDA (not greater than)		3.75
Commercial paper program
Line of Credit Facility [Line Items]
Outstanding under commercial paper program		$ 277,000,000	$ 26,200,000
Average weighted interest rate		2.08%	1.23%
Revolving credit agreement
Line of Credit Facility [Line Items]
Unsecured revolving credit facility, maximum borrowing capacity		$ 1,250,000,000
Maximum borrowing capacity after increase		1,750,000,000
Outstanding borrowings under revolving credit facility		$ 0
Required ratio of EBITDA to interest expense (not less than)				3
Required ratio of funded debt to EBITDA (not greater than)				3.75
Subsequent event | Revolving credit agreement
Line of Credit Facility [Line Items]
Unsecured revolving credit facility, maximum borrowing capacity	$ 1,600,000,000
Maximum borrowing capacity after increase	$ 2,100,000,000
Required ratio of EBITDA to interest expense (not less than)	3

DISCONTINUED OPERATIONS AND O67

DISCONTINUED OPERATIONS AND OTHER DIVESTITURES - Summary of Comparative Financial Results (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	May 27, 2018	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	May 28, 2017	Feb. 26, 2017	Nov. 27, 2016	Aug. 28, 2016	May 27, 2018	May 28, 2017	May 29, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations, net of tax	$ (0.3)	$ 14.5	$ 0.4	$ (0.3)	$ (1.7)	$ 0.7	$ 11.6	$ 91.4	$ 14.3	$ 102	$ (794.4)
Net income from discontinued operations attributable to Conagra Brands, Inc.									14.3	95.2	(803.6)
Lamb Weston | Spinoff
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales									0	1,407.9	2,975
Income (loss) from operations of discontinued operations before income taxes									(0.3)	172.3	474.8
Income (loss) before income taxes and equity method investment earnings									(0.3)	172.3	474.8
Income tax expense (benefit)									(14.6)	87.5	178.9
Equity method investment earnings									0	15.9	71.7
Income (loss) from discontinued operations, net of tax									14.3	100.7	367.6
Less: Net income attributable to noncontrolling interests									0	6.8	9.2
Net income from discontinued operations attributable to Conagra Brands, Inc.									14.3	93.9	358.4
Private Brands | Disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales									0	0	2,490.6
(Loss) gain on sale of businesses									0	(1.6)	0
Long-lived asset impairment charges									0	0	(1,923)
Income (loss) from operations of discontinued operations before income taxes									0.4	3.9	168
Income (loss) before income taxes and equity method investment earnings									0.4	2.3	(1,755)
Income tax expense (benefit)									0.5	(0.3)	(593.1)
Income (loss) from discontinued operations, net of tax									$ (0.1)	$ 2.6	$ (1,161.9)

DISCONTINUED OPERATIONS AND O68

DISCONTINUED OPERATIONS AND OTHER DIVESTITURES - Lamb Weston Spinoff (Narrative) (Details) - USD ($) $ in Millions	Nov. 09, 2016	May 27, 2018	May 28, 2017	May 29, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash payment received from Lamb West as part of the consideration for the Spinoff		$ 0	$ 489	$ 0
Lamb Weston | Spinoff
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Expenses incurred related to professional fees and contract services			74.8
Income tax benefit recorded for adjustment of estimated deductibility		14.5
Total assets transferred to Lamb Weston	$ 2,280
Total liabilities transferred to Lamb Weston	2,980
Debt included in total liabilities transferred to Lamb Weston	2,460
Cash payment received from Lamb West as part of the consideration for the Spinoff	$ 823.5
Transition services income for performance of services		$ 2.2	$ 4.2

DISCONTINUED OPERATIONS AND O69

DISCONTINUED OPERATIONS AND OTHER DIVESTITURES - Private Brands Operations (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Feb. 26, 2017	Feb. 28, 2016	May 27, 2018	May 28, 2017	May 29, 2016	Feb. 01, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax charge to write-down goodwill and long-lived assets			$ 14.7	$ 343.3	$ 62.6
Loss on extinguishment of debt			0	93.3	23.9
Senior notes
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on extinguishment of debt	$ 32.7	$ 23.9
Ralcorp
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Aggregate principal amount of senior notes repaid		$ 33.9			33.9
Loss on extinguishment of debt					5.4
Ralcorp | Senior notes | Senior notes due August 15, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Aggregate principal amount of senior notes repaid					$ 17.2
Stated interest rate (percent)					4.95%
Effective interest rate					2.83%
Ralcorp | Senior notes | Senior notes due August 15, 2039
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Aggregate principal amount of senior notes repaid					$ 16.7
Stated interest rate (percent)					6.625%
Effective interest rate					4.82%
Lamb Weston | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Transition services income for performance of services			2.2	4.2
Private Brands | Disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from disposition on a debt-free basis						$ 2,600
Transition services income for performance of services			$ 2.2	$ 16.9	$ 8.3
Private Brands | Held for sale, discontinued operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax charge to write-down goodwill and long-lived assets					1,920
After-tax charge to write-down goodwill and long-lived assets					$ 1,440

DISCONTINUED OPERATIONS AND O70

DISCONTINUED OPERATIONS AND OTHER DIVESTITURES - ConAgra Mills Operations (Narrative) (Details) - ConAgra Mills - Discontinued operations $ in Millions	May 28, 2017USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Adjustment to multi-employer pension withdrawal liability, pre-tax	$ 2
Adjustment to multi-employer pension withdrawal liability, after-tax	$ 1.3

DISCONTINUED OPERATIONS AND O71

DISCONTINUED OPERATIONS AND OTHER DIVESTITURES - Schedule of Assets and Liabilities Classified as Held for Sale (Details) - Held for sale - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total current assets of discontinued operations	$ 44.4	$ 41.8
Total noncurrent assets of discontinued operations	137.2	140.4
Del Monte
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total current assets of discontinued operations	6.1	6.3
Total noncurrent assets of discontinued operations	11.5	11.4
Goodwill	5.8	5.8
Wesson
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total current assets of discontinued operations	37.7	35.5
Total noncurrent assets of discontinued operations	101	102.8
Goodwill	$ 74.5	$ 74.5

DISCONTINUED OPERATIONS AND O72

DISCONTINUED OPERATIONS AND OTHER DIVESTITURES - Other Divestitures (Narrative) (Details) $ in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Aug. 28, 2016USD ($)	May 27, 2018USD ($)	May 28, 2017USD ($)	May 29, 2016USD ($)	Feb. 25, 2018USD ($)	Feb. 25, 2018CAD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax gains from sales of businesses		$ 0	$ 197.4	$ 0
Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncurrent assets held for sale		137.2	140.4
Corporate segment | Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncurrent assets held for sale		10.4	11.6
Grocery & Snacks segments | Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncurrent assets held for sale		14.9	14.6
Del Monte | Disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net proceeds from sale expected to be realized					$ 34	$ 43
Del Monte | Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncurrent assets held for sale		11.5	11.4
Wesson | Held and used
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment charge recognized on production facility			27.6
Wesson | Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Noncurrent assets held for sale		101	102.8
Spicetec | Commercial | Disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from disposition, net of cash included	$ 329.7
Pre-tax gains from sales of businesses	144.8
JM Swank | Commercial | Disposed of by sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from disposition, net of cash included	159.3
Pre-tax gains from sales of businesses	$ 52.6
Transition Services Agreement [Member] | Spicetec and JM Swank
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Transition services income for performance of services		$ 0.2	$ 1.9

INVESTMENTS IN JOINT VENTURES -

INVESTMENTS IN JOINT VENTURES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Schedule of Equity Method Investments [Line Items]
Dividends received from equity method investments	$ 62.5	$ 68.2	$ 40.4
Other assets
Schedule of Equity Method Investments [Line Items]
Carrying value of equity method investments	776.2	741.3
Equity method investments
Schedule of Equity Method Investments [Line Items]
Purchases from equity method investees	$ 34.9		61.2
Sales to equity method investees		41.8	1.6
Others
Schedule of Equity Method Investments [Line Items]
Ownership interest (as a percent)	50.00%
Ardent Mills
Schedule of Equity Method Investments [Line Items]
Ownership interest (as a percent)	44.00%
Ardent Mills | Equity method investments
Schedule of Equity Method Investments [Line Items]
Sales to equity method investees		$ 0.1	$ 9.7

INVESTMENTS IN JOINT VENTURES74

INVESTMENTS IN JOINT VENTURES - Summary of Combined Financial Information (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Statement of Earnings
Total net sales	$ 3,542.9	$ 3,357.7	$ 3,562.5
Total gross margin	421.3	374.9	372
Total earnings after income taxes	207.1	162.1	149.3
Ardent Mills
Statement of Earnings
Total net sales	3,344.1	3,180	3,395.3
Total gross margin	386.5	340.3	339.2
Total earnings after income taxes	197	152	142.9
Balance Sheet
Current assets	974.6	937.2
Noncurrent assets	1,675.7	1,694.2
Current liabilities	355.6	388.9
Noncurrent liabilities	510.9	518
Others
Statement of Earnings
Total net sales	198.8	177.7	167.2
Total gross margin	34.8	34.6	32.8
Total earnings after income taxes	10.1	10.1	$ 6.4
Balance Sheet
Current assets	76.4	75.5
Noncurrent assets	15.5	12.2
Current liabilities	37.5	44.5
Noncurrent liabilities	$ 0.1	$ 0

VARIABLE INTEREST ENTITIES (Det

VARIABLE INTEREST ENTITIES (Details) $ in Millions	3 Months Ended	12 Months Ended
	Feb. 25, 2018USD ($)building	May 27, 2018USD ($)property	May 28, 2017USD ($)lease_agreement	May 29, 2016USD ($)leasebuilding
Variable Interest Entity [Line Items]
Number of expired lease agreements | lease_agreement			1
Benefit recorded in selling, general and administrative expenses		$ (1,318)	$ (1,417.1)	$ (2,024.6)
Number buildings purchased in period | building	2
Loss recognized for early exit of lease contracts	$ 48.2
Loss on lease put option
Variable Interest Entity [Line Items]
Number of remaining leased buildings subject to a lease put option | property		1
Estimated amount by which put prices exceeded fair values of related properties	$ 8.2
Accrued put cost		$ 1.2
Restatement Adjustment
Variable Interest Entity [Line Items]
Benefit recorded in selling, general and administrative expenses			$ 6.7
SCAE Plan
Variable Interest Entity [Line Items]
Number of leases canceled | lease				2
Aggregate charges for early termination of leases		$ 31.5
Financing lease obligation				$ 74.2
SCAE Plan | Exchange of productive assets
Variable Interest Entity [Line Items]
Number of buildings acquired in exchange | building				2
Early termination of leases | SCAE Plan
Variable Interest Entity [Line Items]
Aggregate charges for early termination of leases				$ 55.6

GOODWILL AND OTHER IDENTIFIAB76

GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS - Schedule of the Change in the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	May 28, 2017	Nov. 27, 2016	Aug. 28, 2016	May 27, 2018	May 28, 2017
Goodwill
Beginning balance			$ 4,315.9	$ 4,295.3	$ 4,315.9
Impairment					(198.9)
Acquisitions				213	174.3
Purchase accounting adjustments				(1.5)
Currency translation				(4.3)	4
Ending balance	$ 4,295.3			4,502.5	4,295.3
Grocery & Snacks
Goodwill
Beginning balance			2,273.1	2,439.1	2,273.1
Impairment					0
Acquisitions				155.2	166
Purchase accounting adjustments				(1.5)
Currency translation				0	0
Ending balance	2,439.1			2,592.8	2,439.1
Refrigerated & Frozen
Goodwill
Beginning balance			1,028.9	1,037.3	1,028.9
Impairment					0
Acquisitions				57.8	8.3
Currency translation				0.6	0.1
Ending balance	1,037.3			1,095.7	1,037.3
International
Goodwill
Beginning balance			442.8	247.8	442.8
Impairment	(15.8)	$ (43.9)	(139.2)		(198.9)
Acquisitions				0
Currency translation				(4.9)	3.9
Ending balance	247.8			242.9	247.8
Foodservice
Goodwill
Beginning balance			$ 571.1	571.1	571.1
Acquisitions				0
Currency translation				0
Ending balance	$ 571.1			$ 571.1	$ 571.1

GOODWILL AND OTHER IDENTIFIAB77

GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS - Schedule of Other Identifiable Intangible Assets (Details) - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Non-amortizing intangible assets
Gross Carrying Amount	$ 918.3	$ 829.7
Amortizing intangible assets
Gross Carrying Amount	579.4	573.5
Accumulated Amortization	213.2	179.5
Other identifiable intangible assets
Gross Carrying Amount	1,497.7	1,403.2
Accumulated Amortization	$ 213.2	$ 179.5

GOODWILL AND OTHER IDENTIFIAB78

GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended					12 Months Ended
	Aug. 27, 2017	May 28, 2017	Nov. 27, 2016	Aug. 28, 2016	Aug. 30, 2015	May 27, 2018	May 28, 2017	May 29, 2016
Indefinite-lived Intangible Assets [Line Items]
Impairment of goodwill							$ 198.9
Remaining weighted average life of amortizing intangible assets						14 years
Amortization expense recognized						$ 34.9	33.6	$ 34.6
Estimated average amortization expense						32.8
High expense in fiscal year 2018						33.3
Low expense in fiscal year 2022						$ 30.9
Amortizing intangible asset					$ 92.8
Cash payment	$ 14.4			$ 14.9	$ 10.4
Period to make remaining payments						4 years
Trademarks | Del Monte
Indefinite-lived Intangible Assets [Line Items]
Impairment charges for indefinite lived intangibles				24.4
Held for sale | Del Monte
Indefinite-lived Intangible Assets [Line Items]
Goodwill						$ 3
Other identifiable intangible assets						9.2
International
Indefinite-lived Intangible Assets [Line Items]
Impairment of goodwill		$ 15.8	$ 43.9	$ 139.2			198.9
Impairment charges for indefinite lived intangibles						0.8
Percent by which fair value of reporting unit exceeded the carrying value of its net assets				5.00%
International | Trademarks
Indefinite-lived Intangible Assets [Line Items]
Impairment charges for indefinite lived intangibles						0.8	37
International | Trademarks | Del Monte
Indefinite-lived Intangible Assets [Line Items]
Impairment charges for indefinite lived intangibles							7.1
International | Trademarks | Aylmer
Indefinite-lived Intangible Assets [Line Items]
Impairment charges for indefinite lived intangibles							5.5
Grocery & Snacks
Indefinite-lived Intangible Assets [Line Items]
Impairment of goodwill							0
Impairment charges for indefinite lived intangibles						4
Grocery & Snacks | Trademarks
Indefinite-lived Intangible Assets [Line Items]
Impairment charges for indefinite lived intangibles						$ 4	68.2	50.1
Grocery & Snacks | Trademarks | Chef Boyardee
Indefinite-lived Intangible Assets [Line Items]
Impairment charges for indefinite lived intangibles							67.1	$ 50.1
Grocery & Snacks | Trademarks | Fiddle Faddle
Indefinite-lived Intangible Assets [Line Items]
Impairment charges for indefinite lived intangibles							$ 1.1
Canadian reporting unit | International
Indefinite-lived Intangible Assets [Line Items]
Discount rates				7.50%
Terminal growth rates				2.00%
Mexican reporting unit | International
Indefinite-lived Intangible Assets [Line Items]
Discount rates		9.00%	8.50%	8.50%
Terminal growth rates		3.00%	3.00%	3.00%

EARNINGS (LOSS) PER SHARE - Rec

EARNINGS (LOSS) PER SHARE - Reconciliation of Income and Average Share Amounts Used to Compute Both Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	May 27, 2018	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	May 28, 2017	Feb. 26, 2017	Nov. 27, 2016	Aug. 28, 2016	May 27, 2018	May 28, 2017	May 29, 2016
Net income (loss) available to Conagra Brands, Inc. common stockholders:
Income from continuing operations attributable to Conagra Brands, Inc. common stockholders									$ 794.1	$ 544.1	$ 126.6
Income (loss) from discontinued operations, net of tax, attributable to Conagra Brands, Inc. common stockholders									14.3	95.2	(803.6)
Net income (loss) attributable to Conagra Brands, Inc.	$ 69.6	$ 362.8	$ 223.5	$ 152.5	$ 151.3	$ 179.7	$ 122.1	$ 186.2	808.4	639.3	(677)
Less: Increase in redemption value of noncontrolling interests in excess of earnings allocated									0	0.8	4.8
Net income (loss) available to Conagra Brands, Inc. common stockholders									$ 808.4	$ 638.5	$ (681.8)
Weighted average shares outstanding:
Basic weighted average shares outstanding (in shares)									403.9	431.9	434.4
Add: Dilutive effect of stock options, restricted stock unit awards, and other dilutive securities (in shares)									3.5	4.1	4.1
Diluted weighted average shares outstanding (in shares)									407.4	436	438.5

EARNINGS (LOSS) PER SHARE - Nar

EARNINGS (LOSS) PER SHARE - Narrative (Details) - shares shares in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Stock options
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Stock options outstanding excluded from computation (in shares)	1.3	0.8	0.4

INVENTORIES (Details)

INVENTORIES (Details) - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Inventory Disclosure [Abstract]
Raw materials and packaging	$ 206.2	$ 182.1
Work in process	92.4	91.9
Finished goods	651.1	606.6
Supplies and other	47.4	47.3
Total	$ 997.1	$ 927.9

OTHER NONCURRENT LIABILITIES (D

OTHER NONCURRENT LIABILITIES (Details) - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Other Liabilities Disclosure [Abstract]
Postretirement health care and pension obligations	$ 261.7	$ 709.8
Noncurrent income tax liabilities	490.4	466.5
Self-insurance liabilities	27.1	29
Environmental liabilities	56	54.7
Technology agreement liability	42.7	56.4
Other	187.3	212.4
Other noncurrent liabilities	$ 1,065.2	$ 1,528.8

CAPITAL STOCK (Details)

CAPITAL STOCK (Details) - USD ($)	12 Months Ended
	May 27, 2018	May 28, 2017	May 18, 2017	Oct. 31, 2016
Class of Stock [Line Items]
Total number of shares authorized	1,218,050,000
Common stock, shares authorized	1,200,000,000	1,200,000,000
Common stock, par value (in dollars per share)	$ 5	$ 5
Preferred stock, shares issued	0
Preferred stock, shares outstanding	0
Class B Preferred Stock
Class of Stock [Line Items]
Preferred Stock, shares authorized	150,000
Preferred stock, par value (in dollars per share)	$ 50
Class C Preferred Stock
Class of Stock [Line Items]
Preferred Stock, shares authorized	250,000
Preferred stock, par value (in dollars per share)	$ 100
Class D Preferred Stock
Class of Stock [Line Items]
Preferred Stock, shares authorized	1,100,000
Class E Preferred Stock
Class of Stock [Line Items]
Preferred Stock, shares authorized	16,550,000
Common stock
Class of Stock [Line Items]
Further increase to share repurchase program	$ 1,000,000,000		$ 1,000,000,000	$ 1,250,000,000
Stock repurchased (in shares)	27,400,000	25,100,000
Repurchase of common shares	$ 967,300,000	$ 1,000,000,000

SHARE-BASED PAYMENTS - Addition

SHARE-BASED PAYMENTS - Additional Information (Narrative) (Details) - Conagra Brands 2014 Stock Plan - shares	May 27, 2018	Sep. 19, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance (up to) (in shares)		40,300,000
Shares reserved for granting additional options, restricted stock units, cash-settled restricted stock units, performance shares, or other share-based awards (in shares)	42,500,000

SHARE-BASED PAYMENTS - Share Un

SHARE-BASED PAYMENTS - Share Unit Plans (Narrative) (Details) - Share Unit Plans - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Stock-settled
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 21.8	$ 18.2	$ 25.1
Tax benefit	$ 7.2	$ 7	$ 9.6
Share units granted (in shares)	870,000	600,000	1,000,000
Weighted average grant date fair value of share units (in dollars per share)	$ 34.16	$ 46.79	$ 43.64
Total intrinsic value of share units vested	$ 18.5	$ 27	$ 48.8
Unrecognized compensation expense, net of estimated forfeitures, related to share unit awards	$ 22.8
Weighted average period for recognition	1 year 9 months
Cash-settled
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 5.8	20.9	33.9
Tax benefit	$ 1.9	$ 8	$ 13
Share units granted (in shares)	0	400,000	800,000
Weighted average grant date fair value of share units (in dollars per share)	$ 0	$ 48.07	$ 44.48
Total intrinsic value of share units vested	$ 14.2	$ 24	$ 44.9
Unrecognized compensation expense, net of estimated forfeitures, related to share unit awards	$ 5.2
Weighted average period for recognition	1 year
Discontinued operations | Stock-settled
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		1.4	3.9
Discontinued operations | Cash-settled
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 2.6	$ 7.4

SHARE-BASED PAYMENTS - Summary

SHARE-BASED PAYMENTS - Summary of Nonvested Share Units and Changes (Details) - Share Unit Plans - $ / shares	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Stock-settled
Share Units
Nonvested, beginning balance (in shares)	1,560,000
Granted (in shares)	870,000	600,000	1,000,000
Vested/Issued (in shares)	(530,000)
Forfeited (in shares)	(120,000)
Nonvested, ending balance (in shares)	1,780,000	1,560,000
Weighted Average Grant-Date Fair Value
Nonvested, beginning balance (in dollars per share)	$ 31.59
Granted (in dollars per share)	34.16	$ 46.79	$ 43.64
Vested/Issued (in dollars per share)	26.58
Forfeited (in dollars per share)	33.77
Nonvested, ending balance (in dollars per share)	$ 34.20	$ 31.59
Cash-settled
Share Units
Nonvested, beginning balance (in shares)	1,210,000
Granted (in shares)	0	400,000	800,000
Vested/Issued (in shares)	(420,000)
Forfeited (in shares)	(80,000)
Nonvested, ending balance (in shares)	710,000	1,210,000
Weighted Average Grant-Date Fair Value
Nonvested, beginning balance (in dollars per share)	$ 30.52
Granted (in dollars per share)	0	$ 48.07	$ 44.48
Vested/Issued (in dollars per share)	22.86
Forfeited (in dollars per share)	34.60
Nonvested, ending balance (in dollars per share)	$ 34.58	$ 30.52

SHARE-BASED PAYMENTS - Performa

SHARE-BASED PAYMENTS - Performance-Based Share Plan (Narrative) (Details) - Performance Shares - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Feb. 25, 2018	May 27, 2018	May 28, 2017	May 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 11.8	$ 13.3	$ 14.2
Tax benefit		3.9	5.1	5.4
Total intrinsic value of share units vested		11.2	$ 2.8	$ 12.7
Unrecognized compensation expense, net of estimated forfeitures, related to performance shares		$ 15.6
Weighted average period for recognition		1 year 9 months 6 days
August 28, 2016 award | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting (as a percent)		33.33%
August 28, 2016 award | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting (as a percent)		33.33%
August 28, 2016 award | Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting (as a percent)		33.33%
August 28, 2017 award | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting (as a percent)		33.33%
August 28, 2017 award | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting (as a percent)		66.66%
Performance period ending in 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Performance period ending in 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Diluted EPS CAGR measurement period	2 years
Award vesting period	3 years
Performance period ending in 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years

SHARE-BASED PAYMENTS - Summar88

SHARE-BASED PAYMENTS - Summary of Activity for Performance Share Awards and Changes (Details) - Performance Shares shares in Thousands	12 Months Ended
	May 27, 2018$ / sharesshares
Shares
Nonvested, beginning balance (in shares) | shares	860
Granted (in shares) | shares	480
Adjustments for performance results attained and dividend equivalents (in shares) | shares	10
Vested/Issued (in shares) | shares	(330)
Forfeited (in shares) | shares	(20)
Nonvested, ending balance (in shares) | shares	1,000
Weighted Average Grant-Date Fair Value
Nonvested, beginning balance (in dollars per share) | $ / shares	$ 29.23
Granted (in dollars per share) | $ / shares	33.82
Adjustments for performance results attained and dividend equivalents (in dollars per share) | $ / shares	22.98
Vested/Issued (in dollars per share) | $ / shares	24.08
Forfeited (in dollars per share) | $ / shares	33.69
Nonvested, ending balance (in dollars per share) | $ / shares	$ 33.40

SHARE-BASED PAYMENTS - Stock Op

SHARE-BASED PAYMENTS - Stock Option Plan (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	Feb. 26, 2017	Nov. 27, 2016	Aug. 28, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)	0	1,100,000	1,600,000
Total intrinsic value of options exercised	$ 15.8
Closing market price of common stock (in dollars per share)	$ 37.41
Unrecognized compensation expense, net of estimated forfeitures, related to stock options	$ 2.3
Cash received from option exercises	25.1	$ 84.4	$ 228.7
Actual tax benefit realized for tax deductions from option exercises	5.3	19.5	57.3
Subsidiary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 0.4	$ 0.9	$ 1
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing market price of common stock (in dollars per share)	$ 35.34	$ 37.29		$ 35.47	$ 32.43	$ 33.07	$ 36.47	$ 34.30	$ 45.70
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing market price of common stock (in dollars per share)	$ 38.29	41.50		$ 38.50	$ 35.87	$ 39.95	$ 41.16	$ 48.68	$ 48.39
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Weighted average grant date value (in dollars per share)		$ 6.12	$ 5.08
Total intrinsic value of options exercised		$ 29.8	$ 165.6
Compensation expense	$ 4.2	6.2	9.4
Tax benefit	$ 1.4	2.4	3.6
Weighted average period for recognition	10 months 24 days
Options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period of options	7 years
Options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period of options	10 years
Discontinued operations | Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense		$ 0.2	$ 0.8

SHARE-BASED PAYMENTS - Schedule

SHARE-BASED PAYMENTS - Schedule of Weighted Average Assumptions for Stock Options Granted (Details)	12 Months Ended
	May 28, 2017	May 29, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected volatility (%)	19.15%	17.88%
Dividend yield (%)	2.33%	2.74%
Risk-free interest rates (%)	1.03%	1.60%
Expected life of stock option (years)	4 years 11 months 9 days	4 years 11 months 16 days

SHARE-BASED PAYMENTS - Summar91

SHARE-BASED PAYMENTS - Summary of Option Activity and Changes (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Number of Options
Outstanding, beginning balance (in shares)	6,300,000
Granted (in shares)	0	1,100,000	1,600,000
Exercised (in shares)	(1,100,000)
Forfeited (in shares)	(100,000)
Outstanding, ending balance (in shares)	5,100,000	6,300,000
Exercisable (in shares)	4,000,000
Weighted Average Exercise Price
Outstanding, beginning balance (in dollars per share)	$ 27.12
Exercised (in dollars per share)	22.28
Forfeited (in dollars per share)	34.78
Outstanding, ending balance (in dollars per share)	28.11	$ 27.12
Exercisable (in dollars per share)	$ 26.34
Average Remaining Contractual Term
Outstanding (term)	5 years 9 months 3 days
Exercisable (term)	5 years 1 month 20 days
Aggregate Intrinsic Value
Exercised	$ 15.8
Outstanding	47.6
Exercisable	$ 44.4

PRE-TAX INCOME AND INCOME TAX92

PRE-TAX INCOME AND INCOME TAXES - Schedule of Pre-Tax Income from Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Income Tax Contingency [Line Items]
Total before tax	$ 972.1	$ 800.7	$ 174.9
United States
Income Tax Contingency [Line Items]
Total before tax	902.5	883.5	136.9
Foreign
Income Tax Contingency [Line Items]
Total before tax	$ 69.6	$ (82.8)	$ 38

PRE-TAX INCOME AND INCOME TAX93

PRE-TAX INCOME AND INCOME TAXES - Schedule of the Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Current
Federal	$ 153.1	$ 201.5	$ 206.5
State	17.8	6.7	31
Foreign	32.5	6.5	8.6
Current provision for income taxes	203.4	214.7	246.1
Deferred
Federal	(43.7)	62.1	(161.5)
State	17.4	(5.3)	(38.9)
Foreign	(2.5)	(16.8)	0.7
Deferred provision for income taxes	(28.8)	40	(199.7)
Total provision for income taxes	$ 174.6	$ 254.7	$ 46.4

PRE-TAX INCOME AND INCOME TAX94

PRE-TAX INCOME AND INCOME TAXES - Reconciliation of Income Taxes to the Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Income Tax Disclosure [Abstract]
Computed U.S. Federal income taxes	$ 285.3	$ 280.2	$ 61.2
State income taxes, net of U.S. Federal tax impact	18	22.4	(6.4)
Remeasurement of U.S. deferred taxes	(241.6)	0	0
Transition tax on foreign earnings	19.8	0	0
Tax credits and domestic manufacturing deduction	(20.6)	(19.8)	(16.5)
Federal rate differential on legal reserve	12.6	0	0
Goodwill and intangible impairments	0	104.7	0
Stock compensation	(5.7)	(18.8)	0
Change of valuation allowance on capital loss carryforward	78.6	(84.1)	0
Change in estimate related to tax methods used for certain international sales, federal credits, and state credits	0	(8)	6
Other	28.2	(21.9)	2.1
Total provision for income taxes	$ 174.6	$ 254.7	$ 46.4

PRE-TAX INCOME AND INCOME TAX95

PRE-TAX INCOME AND INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	May 27, 2018	May 27, 2018	May 28, 2017	May 29, 2016
Tax Credit Carryforward [Line Items]
Provisional net benefit		$ 241.6
Provisional benefit resulting from change of valuation allowance on capital loss carryforward		3.2
Tax Cuts and Jobs Act, Measurement Period Adjustment, Income Tax Expense (Benefit)	$ (0.5)
Provisional tax related to application of one-time transition tax	4.6	$ 19.8
Blended statutory rate (percent)		29.30%
Income taxes paid, net of refunds		$ 164.1	$ 213	$ 291.3
Liabilities for gross unrecognized tax benefits	32.5	32.5	39.3
Related liability for gross interest and penalties	7.7	7.7	6
Interest and penalties recognized		1.6	0.3	0.2
Net amount of unrecognized tax benefits that, if recognized, would favorably impact effective tax rate	27.8	27.8	31.6
Estimated decrease in gross unrecognized tax benefits	15.3	15.3
Foreign net operating loss carryforwards	27.5	27.5
Foreign net operating loss carryforwards (expiring between fiscal 2018 and 2038)	10.7	10.7
Foreign net operating loss carryforwards with no expiration dates		16.8
Federal net operating loss carryforwards (expiring in fiscal 2027)	19.4	19.4
Tax effected state net operating loss carryforwards	35.7	35.7
Foreign tax credits (expiring between fiscal 2025 and 2027)	1	1
State tax credits		10.1
Net (decrease) increase in valuation allowance		(273.8)	(420.1)	1,400
Income tax expense		$ 174.6	$ 254.7	$ 46.4
Minimum
Tax Credit Carryforward [Line Items]
Statutes of limitations, term		3 years
Maximum
Tax Credit Carryforward [Line Items]
Statutes of limitations, term		5 years
United States | Capital loss carryforwards
Tax Credit Carryforward [Line Items]
Capital loss carryforwards related to the private brands divestiture	2,800	$ 2,800
State | Capital loss carryforwards
Tax Credit Carryforward [Line Items]
Capital loss carryforwards related to the private brands divestiture	173.7	173.7
Discontinued operations
Tax Credit Carryforward [Line Items]
Estimated decrease in gross unrecognized tax benefits	$ 6.7	6.7
No Longer Required For Indefinite Reinvestment
Tax Credit Carryforward [Line Items]
Income tax expense		$ 5.9

PRE-TAX INCOME AND INCOME TAX96

PRE-TAX INCOME AND INCOME TAXES - Schedule of the Tax Effect of Temporary Differences and Carryforwards (Details) - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Assets
Accrued expenses	$ 15.5	$ 20.2
Compensation related liabilities	34.1	63.9
Pension and other postretirement benefits	45.8	275.2
Other liabilities that will give rise to future tax deductions	109.7	117.9
Net capital and operating loss carryforwards	762.5	1,112.5
Other	26.3	60
Gross deferred tax assets	993.9	1,649.7
Less: Valuation allowance	(739.6)	(1,013.4)
Net deferred taxes	254.3	636.3
Liabilities
Property, plant and equipment	141	216.6
Goodwill, trademarks and other intangible assets	406.2	623.4
Investment in unconsolidated subsidiaries	165.8	237.8
Other	6.1	6.3
Gross deferred tax liabilities	719.1	1,084.1
Net deferred taxes	$ 719.1	$ 1,084.1

PRE-TAX INCOME AND INCOME TAX97

PRE-TAX INCOME AND INCOME TAXES - Schedule of Change in Unrecognized Tax Benefits (Details) $ in Millions	12 Months Ended
	May 27, 2018USD ($)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns
Beginning balance	$ 39.3
Increases from positions established during prior periods	14.5
Decreases from positions established during prior periods	(11.5)
Increases from positions established during the current period	3.5
Decreases relating to settlements with taxing authorities	(10.3)
Reductions resulting from lapse of applicable statute of limitation	(2.9)
Other adjustments to liability	(0.1)
Ending balance	$ 32.5

LEASES - Narrative (Details)

LEASES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Operating Leased Assets [Line Items]
Assets under capital and financing leases	$ 82.9	$ 119.5
Accumulated depreciation	32.1	47.7
Non-cash issuances of capital and financing lease obligations	1.3	0.5	$ 103.3
Continuing operations
Operating Leased Assets [Line Items]
Rent expense under all operating leases	$ 62.5	$ 71.2	$ 77.4

LEASES - Summary of Non-Cancell

LEASES - Summary of Non-Cancellable Operating Lease Commitments (Details) $ in Millions	May 27, 2018USD ($)
Leases [Abstract]
2,019	$ 35.6
2,020	25.2
2,021	22.3
2,022	17.9
2,023	15.8
Later years	82.3
Total non-cancellable operating lease commitments	$ 199.1

CONTINGENCIES (Details)

CONTINGENCIES (Details)	Mar. 25, 2016USD ($)	Jan. 27, 2014USD ($)defendant	May 27, 2018USD ($)	Feb. 25, 2018USD ($)	May 27, 2018USD ($)siteperiod	May 28, 2017USD ($)	May 29, 2016USD ($)
Guarantor Obligations [Line Items]
Accrual for Beatrice-related environmental matters			$ 56,000,000		$ 56,000,000	$ 54,700,000
Selling, general and administrative expenses					1,318,000,000	1,417,100,000	$ 2,024,600,000
Loss recognized for early exit of lease contracts				$ 48,200,000
Significant litigation accruals			151,000,000		151,000,000	0	0
Loss on lease put option
Guarantor Obligations [Line Items]
Estimated possible loss				$ 8,200,000
Accrued put cost			1,200,000		$ 1,200,000
Lamb Weston
Guarantor Obligations [Line Items]
Number of extension periods | period					2
Term of optional extension periods					5 years
Judicial ruling
Guarantor Obligations [Line Items]
Amount of verdict in favor of Jacobs	$ 108,900,000
Beatrice
Guarantor Obligations [Line Items]
Number of sites where Beatrice is a potentially responsible party | site					40
Number of sites where Beatrice has paid or is paying its liability share | site					31
Accrual for Beatrice-related environmental matters			52,400,000		$ 52,400,000
Guarantee to make payments to warehouse provider
Guarantor Obligations [Line Items]
Minimum monthly payments required under agreement					1,500,000
Warehouse services agreement guarantee recorded in other noncurrent liabilities			28,100,000		28,100,000
Performance and payment of all amounts under sublease agreement
Guarantor Obligations [Line Items]
Maximum amount guaranteed for Lamb Weston's performance and payment			75,000,000		75,000,000
California | Beatrice
Guarantor Obligations [Line Items]
Number of other defendants | defendant		2
Estimated possible loss		$ 1,150,000,000
Restatement Adjustment
Guarantor Obligations [Line Items]
Selling, general and administrative expenses						$ (6,700,000)
Minimum | California | Beatrice
Guarantor Obligations [Line Items]
Estimated possible loss			60,000,000		60,000,000
Maximum | California | Beatrice
Guarantor Obligations [Line Items]
Estimated possible loss			$ 335,000,000		335,000,000
SCAE Plan
Guarantor Obligations [Line Items]
Aggregate charges for early termination of leases					$ 31,500,000
Financing lease obligation							74,200,000
Early termination of leases | SCAE Plan
Guarantor Obligations [Line Items]
Aggregate charges for early termination of leases							$ 55,600,000

DERIVATIVE FINANCIAL INSTRUM101

DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017
Derivative Financial Instruments [Line Items]
Period of economic hedge (up to)	36 months
Amounts representing a right to reclaim cash collateral included in prepaid expenses and other current assets	$ 1	$ 0.9
Setoff to total derivative assets	1.4	0.5
Setoff to total derivative liabilities	0.4	1.4
Maximum amount of loss due to credit risk of courterparties	2.7
Commodity contracts
Derivative Financial Instruments [Line Items]
Total notional amount of contracts	100	76.8
Purchase and sales contracts
Derivative Financial Instruments [Line Items]
Total notional amount of contracts	34.2	73.4
Foreign currency forward and cross currency swap contracts
Derivative Financial Instruments [Line Items]
Total notional amount of contracts	$ 82.4	$ 81.9

DERIVATIVE FINANCIAL INSTRUM102

DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Derivative Assets and Liabilities Representing a Right to Reclaim Cash Collateral or Obligation to Return Cash Collateral (Details) - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Prepaid expenses and other current assets	$ 4.4	$ 2.3
Other accrued liabilities	$ 0.1	$ 1.3

DERIVATIVE FINANCIAL INSTRUM103

DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Derivative Assets and Liabilities Where Legal Right of Setoff Existed (Details) - Total derivatives not designated as hedging instruments - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 5.8	$ 2.8
Derivative Liabilities	0.5	2.7
Commodity contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	3.7	2.6
Commodity contracts | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0.4	1.4
Foreign exchange contracts | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	2.1	0.2
Foreign exchange contracts | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0	1.1
Other | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Other | Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 0.1	$ 0.2

DERIVATIVE FINANCIAL INSTRUM104

DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Location and Amount of Gains (Losses) from Derivatives Not Designated as Hedging Instruments (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Derivatives, Fair Value [Line Items]
Amount of Gain (Loss) Recognized on Derivatives in Consolidated Statement of Operations	$ (0.6)	$ 0.8	$ (4.5)
Commodity contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Amount of Gain (Loss) Recognized on Derivatives in Consolidated Statement of Operations	3	0.9	(8.1)
Foreign exchange contracts | Cost of goods sold
Derivatives, Fair Value [Line Items]
Amount of Gain (Loss) Recognized on Derivatives in Consolidated Statement of Operations	(3.9)	(0.3)	0.7
Foreign exchange contracts | Selling, general and administrative expense
Derivatives, Fair Value [Line Items]
Amount of Gain (Loss) Recognized on Derivatives in Consolidated Statement of Operations	$ 0.3	$ 0.2	$ 2.9

PENSION AND POSTRETIREMENT B105

PENSION AND POSTRETIREMENT BENEFITS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Nov. 26, 2017	May 27, 2018	May 28, 2017	May 29, 2016	Sep. 30, 2017	Aug. 27, 2017	Dec. 31, 2016	Nov. 09, 2016
Defined Benefit Plan Disclosure [Line Items]
Expense resulting from special termination benefits granted				$ 25.6
Expense related to expected incurrence of certain multi-employer plan withdrawal costs		$ 0.6	$ 4	31.8
Fair value of certain investments		487.2
Fair value of funds which have imposed such gates		0.1
Additional expense related to expected incurrence of certain withdrawal costs		0.6	4	31.8
Expense related to defined contribution plans		$ 24.5	$ 18	35.4
Generally less than
Defined Benefit Plan Disclosure [Line Items]
Maximum allowable funding percentage to be in critical status		65.00%
Maximum allowable funding percentage to be in endangered status status		80.00%
Generally at least
Defined Benefit Plan Disclosure [Line Items]
Minimum required funding percentage to be in the green zone		80.00%
Percentage of plan's total contribution under Forms 5500 (more than)		5.00%
Private equity funds
Defined Benefit Plan Disclosure [Line Items]
Unfunded commitments for additional investments		$ 65.4
Natural resources funds
Defined Benefit Plan Disclosure [Line Items]
Unfunded commitments for additional investments		$ 26.7
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (percent)		90.00%
Return seeking securities
Defined Benefit Plan Disclosure [Line Items]
Target allocation (percent)		10.00%
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Effective discount rate assumption		4.14%	3.90%				4.11%
Decrease to underfunded status of the pension plans		$ 79.5	$ 18.1
Charge reflecting year-end write-off of actuarial losses	$ 3.4	3.4	1.2	348.5
Accumulated benefit obligation		3,400	3,500
Lump-sum settlement payments		10.2	287.5
Settlement charge		1.3	13.8	0
Benefit to accumulated other comprehensive income (loss)			62.2
Expense resulting from special termination benefits granted		0	1.5	25.6
Pre-tax reduction in total pension benefit cost associated with change in accounting estimate		(49)	$ (0.9)	413.7
Anticipated contributions to plans in fiscal 2018		$ 19.6
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Effective discount rate assumption		3.81%	3.33%
Decrease to underfunded status of the pension plans		$ 0	$ 0
Lump-sum settlement payments		0	0
Settlement charge		0	0	0
Expense resulting from special termination benefits granted		0	0	0
Pre-tax reduction in total pension benefit cost associated with change in accounting estimate		0.7	(1.2)	$ 0.2
Anticipated contributions to plans in fiscal 2018		$ 16.2
Spinoff | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Effective discount rate assumption				3.86%	3.78%	3.90%		4.04%
Decrease to underfunded status of the pension plans	43.5		66
Pension curtailment gain (charge) within other comprehensive income (loss)	$ (0.7)		19.5
Discontinued operations
Defined Benefit Plan Disclosure [Line Items]
Expense related to expected incurrence of certain multi-employer plan withdrawal costs			2.1	$ 2
Restructuring activities
Defined Benefit Plan Disclosure [Line Items]
Expense related to expected incurrence of certain multi-employer plan withdrawal costs			1.9	$ 29.8
Change in Assumptions for Defined Benefit Plans | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Pre-tax reduction in total pension benefit cost associated with change in accounting estimate			$ 27

PENSION AND POSTRETIREMENT B106

PENSION AND POSTRETIREMENT BENEFITS - Schedule of Changes in Benefit Obligations and Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Change in Plan Assets
Fair value of plan assets at beginning of year	$ 2,983.6
Fair value of plan assets at end of year	3,355.1	$ 2,983.6
Pension Benefits
Change in Benefit Obligation
Benefit obligation at beginning of year	3,548.7	3,903
Service cost	42.8	56.9	$ 93.8
Interest cost	111.1	116.8	159.8
Plan participants' contributions	0	0
Amendments	0.6	5.5
Actuarial gain	(9.4)	(51.5)
Plan settlements	(10.2)	(287.5)
Special termination benefits	0	1.5
Curtailments	(79.5)	(18.1)
Benefits paid	(181.3)	(169.7)
Currency	0.8	(0.8)
Business divestitures	0	(7.4)
Benefit obligation at end of year	3,423.6	3,548.7	3,903
Change in Plan Assets
Fair value of plan assets at beginning of year	2,983.6	2,959.4
Actual return on plan assets	276.1	346.1
Employer contributions	312.6	163
Plan participants' contributions	0	0
Plan settlements	(10.2)	(287.5)
Investment and administrative expenses	(26.5)	(26.7)
Benefits paid	(181.3)	(169.7)
Currency	0.8	(1)
Fair value of plan assets at end of year	3,355.1	2,983.6	2,959.4
Other Benefits
Change in Benefit Obligation
Benefit obligation at beginning of year	156.9	201.7
Service cost	0.2	0.3	0.4
Interest cost	3.9	4.6	7.5
Plan participants' contributions	4.7	4.7
Amendments	(17.2)	0
Actuarial gain	(13.2)	(32)
Plan settlements	0	0
Special termination benefits	0	0
Curtailments	0	0
Benefits paid	(16.2)	(19)
Currency	0.2	(0.2)
Business divestitures	0	(3.2)
Benefit obligation at end of year	119.3	156.9	201.7
Change in Plan Assets
Fair value of plan assets at beginning of year	0	0.1
Actual return on plan assets	3.7	0
Employer contributions	11.5	14.2
Plan participants' contributions	4.7	4.7
Plan settlements	0	0
Investment and administrative expenses	0	0
Benefits paid	(16.2)	(19)
Currency	0	0
Fair value of plan assets at end of year	$ 3.7	$ 0	$ 0.1

PENSION AND POSTRETIREMENT B107

PENSION AND POSTRETIREMENT BENEFITS - Schedule of Funded Status and Amounts Recognized (Details) - USD ($) $ in Millions	May 27, 2018	May 28, 2017	Dec. 31, 2016
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Funded Status	$ (68.5)	$ (565.1)
Amounts Recognized in Consolidated Balance Sheets
Other assets	103	17.1
Other accrued liabilities	(11.8)	(10.9)
Other noncurrent liabilities	(159.7)	(571.3)
Net Amount Recognized	(68.5)	(565.1)
Amounts Recognized in Accumulated Other Comprehensive (Income) Loss (Pre-tax)
Actuarial net loss (gain)	48.8	174.2
Net prior service cost (benefit)	13.8	16
Total	$ 62.6	$ 190.2
Weighted-Average Actuarial Assumptions Used to Determine Benefit Obligations at May 27, 2018 and May 28, 2017
Discount rate	4.14%	3.90%	4.11%
Long-term rate of compensation increase		3.63%
Other Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Funded Status	$ (115.6)	$ (156.9)
Amounts Recognized in Consolidated Balance Sheets
Other assets	2.6	0
Other accrued liabilities	(16.2)	(18.4)
Other noncurrent liabilities	(102)	(138.5)
Net Amount Recognized	(115.6)	(156.9)
Amounts Recognized in Accumulated Other Comprehensive (Income) Loss (Pre-tax)
Actuarial net loss (gain)	(25.8)	(9)
Net prior service cost (benefit)	(18.4)	(4.6)
Total	$ (44.2)	$ (13.6)
Weighted-Average Actuarial Assumptions Used to Determine Benefit Obligations at May 27, 2018 and May 28, 2017
Discount rate	3.81%	3.33%

PENSION AND POSTRETIREMENT B108

PENSION AND POSTRETIREMENT BENEFITS - Schedule of Projected Benefit Obligation, Accumulated Benefit Obligation, and Fair Value of Plan Assets (Details) - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Retirement Benefits [Abstract]
Projected benefit obligation	$ 951.1	$ 3,433.6
Accumulated benefit obligation	950.1	3,357.1
Fair value of plan assets	$ 779.5	$ 2,851.4

PENSION AND POSTRETIREMENT B109

PENSION AND POSTRETIREMENT BENEFITS - Components of Pension Benefit and Other Postretirement Benefit Costs (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Special termination benefits			$ 25.6
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 42.8	$ 56.9	93.8
Interest cost	111.1	116.8	159.8
Expected return on plan assets	(218.3)	(207.4)	(259.9)
Amortization of prior service cost (benefit)	2.9	2.6	2.7
Special termination benefits	0	1.5	25.6
Recognized net actuarial loss	3.4	1.2	348.5
Settlement loss	1.3	13.8	0
Curtailment loss	0.7	1.7	0.3
Benefit cost — Company plans	(56.1)	(12.9)	370.8
Pension benefit cost — multi-employer plans	7.1	12	42.9
Total benefit (income) cost	(49)	(0.9)	413.7
Other Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	0.2	0.3	0.4
Interest cost	3.9	4.6	7.5
Expected return on plan assets	0	0	0
Amortization of prior service cost (benefit)	(3.4)	(6.6)	(7.8)
Special termination benefits	0	0	0
Recognized net actuarial loss	0	0.5	0.1
Settlement loss	0	0	0
Curtailment loss	0	0	0
Benefit cost — Company plans	0.7	(1.2)	0.2
Pension benefit cost — multi-employer plans	0	0	0
Total benefit (income) cost	$ 0.7	$ (1.2)	$ 0.2

PENSION AND POSTRETIREMENT B110

PENSION AND POSTRETIREMENT BENEFITS - Schedule of Other Changes in Plan Assets and Benefit Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net amount recognized	$ 113	$ 135	$ (32.5)
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial gain	120	183.1
Amendments	(0.6)	(5.5)
Amortization of prior service cost (benefit)	2.9	2.9
Settlement and curtailment loss	2	13.8
Recognized net actuarial loss	3.4	1.2
Net amount recognized	127.7	195.5
Other Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial gain	16.8	32.4
Amendments	17.2	(0.4)
Amortization of prior service cost (benefit)	(3.4)	(6.6)
Settlement and curtailment loss	0	0
Recognized net actuarial loss	0	0.5
Net amount recognized	$ 30.6	$ 25.9

PENSION AND POSTRETIREMENT B111

PENSION AND POSTRETIREMENT BENEFITS - Weighted Average Actuarial Assumption Used to Determine Net Expense (Details)	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	3.90%	3.83%	4.10%
Long-term rate of return on plan assets	7.50%	7.50%	7.75%
Long-term rate of compensation increase	3.63%	3.66%	3.70%
Other Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	3.33%	3.18%	3.50%

PENSION AND POSTRETIREMENT B112

PENSION AND POSTRETIREMENT BENEFITS - Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) (Details) $ in Millions	May 27, 2018USD ($)
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Prior service cost (benefit)	$ 2.9
Other Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Prior service cost (benefit)	(2.2)
Net actuarial gain	$ (1.5)

PENSION AND POSTRETIREMENT B113

PENSION AND POSTRETIREMENT BENEFITS - Schedule of Fair Value of Plan Assets, Summarized by Level (Details) - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	$ 3,355.1	$ 2,983.6
Fair value measurement of pension plan assets in the fair value hierarchy	2,655.1	1,678.3
Investments measured at net asset value	700	1,305.3
Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	66	95
U.S. equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	443.8	507.7
International equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	257.5	263.1
Government bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	1,854.8	275.4
Corporate bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	4.7	283.9
Mortgage-backed bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	9.3	69.5
Real estate funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	7.7	9.5
Master limited partnerships
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0.4	173.5
Net payables for unsettled transactions
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	10.9	0.7
Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	596.3	1,047.4
Level 1 | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	1	1
Level 1 | U.S. equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	319.8	494
Level 1 | International equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	256.5	249.9
Level 1 | Government bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	51.1
Level 1 | Corporate bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	4.4
Level 1 | Mortgage-backed bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	63.3
Level 1 | Real estate funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	7.7	9.5
Level 1 | Master limited partnerships
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0.4	173.5
Level 1 | Net payables for unsettled transactions
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	10.9	0.7
Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	2,058.8	630.9
Level 2 | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	65	94
Level 2 | U.S. equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	124	13.7
Level 2 | International equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	1	13.2
Level 2 | Government bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	1,854.8	224.3
Level 2 | Corporate bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	4.7	279.5
Level 2 | Mortgage-backed bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	9.3	6.2
Level 2 | Real estate funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Level 2 | Master limited partnerships
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Level 2 | Net payables for unsettled transactions
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Level 3
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Level 3 | Cash and cash equivalents
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Level 3 | U.S. equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Level 3 | International equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Level 3 | Government bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Level 3 | Corporate bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Level 3 | Mortgage-backed bonds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Level 3 | Real estate funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Level 3 | Master limited partnerships
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	0	0
Level 3 | Net payables for unsettled transactions
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Total pension plan assets	$ 0	$ 0

PENSION AND POSTRETIREMENT B114

PENSION AND POSTRETIREMENT BENEFITS - Schedule of Pension Plan Weighted-Average Asset Allocations and Target Asset Allocations (Details)	May 27, 2018	May 28, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted-average Asset Allocations	100.00%	100.00%
Equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted-average Asset Allocations	21.00%	39.00%
Debt securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted-average Asset Allocations	58.00%	25.00%
Real estate funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted-average Asset Allocations	10.00%	11.00%
Multi-strategy hedge funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted-average Asset Allocations	4.00%	11.00%
Private equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted-average Asset Allocations	4.00%	4.00%
Other
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted-average Asset Allocations	3.00%	10.00%

PENSION AND POSTRETIREMENT B115

PENSION AND POSTRETIREMENT BENEFITS - Schedule of Assumed Health Care Cost Trend Rates (Details)	May 27, 2018	May 28, 2017
Assumed Health Care Cost Trend Rates at:
Initial health care cost trend rate	7.87%	8.44%
Ultimate health care cost trend rate	4.50%	4.50%

PENSION AND POSTRETIREMENT B116

PENSION AND POSTRETIREMENT BENEFITS - Schedule of the Effect of a One Percentage Point Change in Assumed Health Care Cost Rates (Details) $ in Millions	12 Months Ended
	May 27, 2018USD ($)
One Percent Increase
Effect on total service and interest cost	$ 0.3
Effect on postretirement benefit obligation	3.9
One Percent Decrease
Effect on total service and interest cost	(0.3)
Effect on postretirement benefit obligation	$ (3.5)

PENSION AND POSTRETIREMENT B117

PENSION AND POSTRETIREMENT BENEFITS - Schedule of Estimated Future Gross Benefit Payments (Details) $ in Millions	May 27, 2018USD ($)
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2,019	$ 188.7
2,020	184.2
2,021	186.5
2,022	189
2,023	191.3
Succeeding 5 years	980.7
Health Care and Life Insurance Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2,019	16.4
2,020	14.7
2,021	13.4
2,022	12.1
2,023	11
Succeeding 5 years	$ 40.1

PENSION AND POSTRETIREMENT B118

PENSION AND POSTRETIREMENT BENEFITS - Schedule of Contributions for Plans That Are Not Individually Significant (Details) - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Multiemployer Plans [Line Items]
Total Contributions	$ 6.5	$ 8	$ 11.1
Bakery and Confectionary Union and Industry International Pension Plan
Multiemployer Plans [Line Items]
Total Contributions	1.5	1.8	3.1
Central States, Southeast and Southwest Areas Pension Fund
Multiemployer Plans [Line Items]
Total Contributions	1.8	1.8	1.9
Western Conference of Teamsters Pension Plan
Multiemployer Plans [Line Items]
Total Contributions	2.8	4	5.4
Other Plans
Multiemployer Plans [Line Items]
Total Contributions	$ 0.4	$ 0.4	$ 0.7

FAIR VALUE MEASUREMENTS - Sched

FAIR VALUE MEASUREMENTS - Schedule of Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Millions	May 27, 2018	May 28, 2017
Assets:
Derivative assets	$ 4.4	$ 2.3
Available-for-sale securities	4.8	3.5
Total assets	9.2	5.8
Liabilities:
Derivative liabilities	0.1	1.3
Deferred compensation liabilities	51.6	47.2
Total liabilities	51.7	48.5
Level 1
Assets:
Derivative assets	1.7	2
Available-for-sale securities	4.8	3.5
Total assets	6.5	5.5
Liabilities:
Derivative liabilities	0	0
Deferred compensation liabilities	51.6	47.2
Total liabilities	51.6	47.2
Level 2
Assets:
Derivative assets	2.7	0.3
Available-for-sale securities	0	0
Total assets	2.7	0.3
Liabilities:
Derivative liabilities	0.1	1.3
Deferred compensation liabilities	0	0
Total liabilities	0.1	1.3
Level 3
Assets:
Derivative assets	0	0
Available-for-sale securities	0	0
Total assets	0	0
Liabilities:
Derivative liabilities	0	0
Deferred compensation liabilities	0	0
Total liabilities	$ 0	$ 0

FAIR VALUE MEASUREMENTS - Narra

FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	May 28, 2017	Nov. 27, 2016	Aug. 28, 2016	May 27, 2018	May 28, 2017	May 29, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment charges				$ 14.7	$ 343.3	$ 62.6
Goodwill impairment charges					198.9
Carrying amount of long-term debt (including current installments)	$ 2,970			3,540	2,970
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated fair value of debt based on current market rates	3,320			3,760	3,320
Corporate segment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment charges				4.7
International
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill impairment charges	$ 15.8	$ 43.9	$ 139.2		198.9
Indefinite-lived brand impairment charges				0.8
International | Indefinite-lived brand
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Indefinite-lived brand impairment charges				0.8	37
Grocery & Snacks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment charges					27.6
Goodwill impairment charges					0
Indefinite-lived brand impairment charges				4
Grocery & Snacks | Indefinite-lived brand
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Indefinite-lived brand impairment charges				$ 4	$ 68.2	$ 50.1

BUSINESS SEGMENTS AND RELATE121

BUSINESS SEGMENTS AND RELATED INFORMATION - Narrative (Details) $ in Millions	3 Months Ended								12 Months Ended
	May 27, 2018USD ($)	Feb. 25, 2018USD ($)	Nov. 26, 2017USD ($)	Aug. 27, 2017USD ($)	May 28, 2017USD ($)	Feb. 26, 2017USD ($)	Nov. 27, 2016USD ($)	Aug. 28, 2016USD ($)	May 27, 2018USD ($)segment	May 28, 2017USD ($)	May 29, 2016USD ($)
Segment Reporting Information [Line Items]
Number of reporting segments | segment									5
Cumulative net derivative losses from economic hedges recognized in general corporate expenses	$ 3.2								$ 3.2
Segment operating results losses expected to be reclassified in fiscal 2018									2.5
Segment operating results losses expected to be reclassified in fiscal 2019 and thereafter									0.7
Total depreciation expense									222.1	$ 234.4	$ 243.9
Net sales	1,966.2	$ 1,994.5	$ 2,173.4	$ 1,804.2	$ 1,861.7	$ 1,981.2	$ 2,088.4	$ 1,895.6	7,938.3	7,826.9	8,664.1
Payable to suppliers who utilize third-party service	$ 103.1								103.1
Grocery & Snacks
Segment Reporting Information [Line Items]
Net sales									3,287	3,208.8	3,377.1
Refrigerated & Frozen
Segment Reporting Information [Line Items]
Net sales									2,753	2,652.7	2,867.8
International
Segment Reporting Information [Line Items]
Net sales									843.5	816	846.6
Foodservice
Segment Reporting Information [Line Items]
Net sales									1,054.8	1,078.3	1,104.5
Outside of the United States
Segment Reporting Information [Line Items]
Net sales									$ 918.4	$ 887.2	$ 937.9
Customer Concentration Risk | Net sales | Wal-Mart Stores, Inc. and its affiliates
Segment Reporting Information [Line Items]
Percentage of consolidated net sales attributable to largest customer									24.00%	24.00%	23.00%
Customer Concentration Risk | Net receivables | Wal-Mart Stores, Inc. and its affiliates
Segment Reporting Information [Line Items]
Percentage of consolidated net sales attributable to largest customer									25.00%	26.00%

BUSINESS SEGMENTS AND RELATE122

BUSINESS SEGMENTS AND RELATED INFORMATION - Schedule of Segment Operations (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	May 27, 2018	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	May 28, 2017	Feb. 26, 2017	Nov. 27, 2016	Aug. 28, 2016	May 27, 2018	May 28, 2017	May 29, 2016
Segment Reporting Information [Line Items]
Net sales	$ 1,966.2	$ 1,994.5	$ 2,173.4	$ 1,804.2	$ 1,861.7	$ 1,981.2	$ 2,088.4	$ 1,895.6	$ 7,938.3	$ 7,826.9	$ 8,664.1
Operating profit									1,412.5	1,238.3	1,223.1
Equity method investment earnings									97.3	71.2	66.1
General corporate expenses									379	313.3	818.5
Interest expense, net									158.7	195.5	295.8
Income tax expense									174.6	254.7	46.4
Income from continuing operations	$ 70.6	$ 349.2	$ 224.1	$ 153.6	$ 153.6	$ 179.5	$ 114.3	$ 98.6	797.5	546	128.5
Less: Net income attributable to noncontrolling interests of continuing operations									3.4	1.9	1.9
Income from continuing operations attributable to Conagra Brands, Inc.									794.1	544.1	126.6
Grocery & Snacks
Segment Reporting Information [Line Items]
Net sales									3,287	3,208.8	3,377.1
Operating profit									724.8	653.7	592.9
Refrigerated & Frozen
Segment Reporting Information [Line Items]
Net sales									2,753	2,652.7	2,867.8
Operating profit									479.4	445.8	420.4
International
Segment Reporting Information [Line Items]
Net sales									843.5	816	846.6
Operating profit									86.5	(168.9)	66.7
Foodservice
Segment Reporting Information [Line Items]
Net sales									1,054.8	1,078.3	1,104.5
Operating profit									121.8	105.1	97.7
Commercial
Segment Reporting Information [Line Items]
Net sales									0	71.1	468.1
Operating profit									$ 0	$ 202.6	$ 45.4

BUSINESS SEGMENTS AND RELATE123

BUSINESS SEGMENTS AND RELATED INFORMATION - Schedule of Net Sales by Product Type (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	May 27, 2018	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	May 28, 2017	Feb. 26, 2017	Nov. 27, 2016	Aug. 28, 2016	May 27, 2018	May 28, 2017	May 29, 2016
Segment Reporting Information [Line Items]
Total net sales	$ 1,966.2	$ 1,994.5	$ 2,173.4	$ 1,804.2	$ 1,861.7	$ 1,981.2	$ 2,088.4	$ 1,895.6	$ 7,938.3	$ 7,826.9	$ 8,664.1
Shelf-stable
Segment Reporting Information [Line Items]
Total net sales									4,660.1	4,682.4	5,256.8
Temperature-controlled
Segment Reporting Information [Line Items]
Total net sales									$ 3,278.2	$ 3,144.5	$ 3,407.3

BUSINESS SEGMENTS AND RELATE124

BUSINESS SEGMENTS AND RELATED INFORMATION - Schedule of Net Derivative Gains (Losses) from Economic Hedges (Details) - Commodity contracts - USD ($) $ in Millions	12 Months Ended
	May 27, 2018	May 28, 2017	May 29, 2016
Segment Reporting Information [Line Items]
Net derivative gains (losses) incurred	$ (0.9)	$ 0.6	$ (7.4)
Reporting segments
Segment Reporting Information [Line Items]
Net derivative gains (losses) incurred	(7.1)	5.7	(23.8)
Reporting segments | Grocery & Snacks
Segment Reporting Information [Line Items]
Net derivative gains (losses) incurred	0.2	3.4	(14.4)
Reporting segments | Refrigerated & Frozen
Segment Reporting Information [Line Items]
Net derivative gains (losses) incurred	(0.3)	0.8	(6.2)
Reporting segments | International
Segment Reporting Information [Line Items]
Net derivative gains (losses) incurred	(6.9)	1.6	(0.5)
Reporting segments | Foodservice
Segment Reporting Information [Line Items]
Net derivative gains (losses) incurred	(0.1)	0	(1)
Reporting segments | Commercial
Segment Reporting Information [Line Items]
Net derivative gains (losses) incurred	0	(0.1)	(1.7)
Net derivative gains (losses) recognized in general corporate expenses
Segment Reporting Information [Line Items]
Net derivative gains (losses) incurred	$ 6.2	$ (5.1)	$ 16.4

QUARTERLY FINANCIAL DATA (Un125

QUARTERLY FINANCIAL DATA (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	May 27, 2018	Feb. 25, 2018	Nov. 26, 2017	Aug. 27, 2017	May 28, 2017	Feb. 26, 2017	Nov. 27, 2016	Aug. 28, 2016	May 27, 2018	May 28, 2017	May 29, 2016
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 1,966.2	$ 1,994.5	$ 2,173.4	$ 1,804.2	$ 1,861.7	$ 1,981.2	$ 2,088.4	$ 1,895.6	$ 7,938.3	$ 7,826.9	$ 8,664.1
Gross profit	575.4	598.8	658.3	519	529	621	647.5	544.6
Income from continuing operations, net of tax	70.6	349.2	224.1	153.6	153.6	179.5	114.3	98.6	797.5	546	128.5
Income (loss) from discontinued operations, net of tax	(0.3)	14.5	0.4	(0.3)	(1.7)	0.7	11.6	91.4	14.3	102	(794.4)
Net income attributable to Conagra Brands, Inc.	$ 69.6	$ 362.8	$ 223.5	$ 152.5	$ 151.3	$ 179.7	$ 122.1	$ 186.2	$ 808.4	$ 639.3	$ (677)
Basic earnings per share:
Net income attributable to Conagra Brands, Inc. common stockholders	$ 0.18	$ 0.91	$ 0.55	$ 0.37	$ 0.36	$ 0.42	$ 0.28	$ 0.42	$ 2	$ 1.48	$ (1.57)
Diluted earnings per share:
Net income attributable to Conagra Brands, Inc. common stockholders	0.18	0.90	0.54	0.36	0.36	0.41	0.28	0.42	1.98	1.46	(1.56)
Dividends declared per common share (in dollars per share)	0.2125	0.2125	0.2125	0.2125	0.20	0.2	0.25	0.25	0.85	0.90	$ 1
Class of Stock [Line Items]
Share price (in dollars per share)	37.41								37.41
High
Class of Stock [Line Items]
Share price (in dollars per share)	38.29	38.50	35.87	39.95	41.50	41.16	48.68	48.39	38.29	41.50
Low
Class of Stock [Line Items]
Share price (in dollars per share)	$ 35.34	$ 35.47	$ 32.43	$ 33.07	$ 37.29	$ 36.47	$ 34.30	$ 45.70	$ 35.34	$ 37.29