RPM International (RPM) 10-K 27 Jul 20 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	May 31, 2020	Jul. 23, 2020	Nov. 30, 2019
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	May 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Trading Symbol	RPM
Entity Registrant Name	RPM INTERNATIONAL INC.
Entity Central Index Key	0000110621
Current Fiscal Year End Date	--05-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		129,859,093
Entity Public Float			$ 9,456,281,333
Entity File Number	1-14187
Entity Tax Identification Number	02-0642224
Entity Address, Address Line One	P.O. Box 777
Entity Address, Address Line Two	2628 Pearl Road
Entity Address, City or Town	Medina
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44258
City Area Code	330
Local Phone Number	273-5090
Entity Incorporation, State or Country Code	DE
Document Annual Report	true
Document Transition Report	false
Security Exchange Name	NYSE
Title of 12(b) Security	Common Stock, par value $0.01
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the definitive Proxy Statement to be used in connection with the Registrant’s Annual Meeting of Stockholders to be held on October 8, 2020 (the “2020 Proxy Statement”) are incorporated by reference into Part III of this Annual Report on Form 10-K. Except as otherwise stated, the information contained in this Annual Report on Form 10-K is as of May 31, 2020.

Consolidated Balance Sheet

Consolidated Balance Sheet - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Current Assets
Cash and cash equivalents	$ 233,416	$ 223,168
Trade accounts receivable (less allowances of $55,847 and $54,748, respectively)	1,137,957	1,232,350
Inventories	810,448	841,873
Prepaid expenses and other current assets	241,608	220,701
Total current assets	2,423,429	2,518,092
Property, Plant and Equipment, at Cost	1,755,190	1,662,859
Allowance for depreciation	(905,504)	(843,648)
Property, plant and equipment, net	849,686	819,211
Other Assets
Goodwill	1,250,066	1,245,762
Other intangible assets, net of amortization	584,380	601,082
Operating lease right-of-use assets	284,491
Deferred income taxes	30,894	34,908
Other	208,008	222,300
Total other assets	2,357,839	2,104,052
Total Assets	5,630,954	5,441,355
Current Liabilities
Accounts payable	535,311	556,696
Current portion of long-term debt	80,890	552,446
Accrued compensation and benefits	185,531	193,345
Accrued losses	20,021	19,899
Other accrued liabilities	271,827	217,019
Total current liabilities	1,093,580	1,539,405
Long-Term Liabilities
Long-term debt, less current maturities	2,458,290	1,973,462
Operating lease liabilities	244,691
Other long-term liabilities	510,175	405,040
Deferred income taxes	59,555	114,843
Total long-term liabilities	3,272,711	2,493,345
Commitments and contingencies (Note P)
Stockholders' Equity
Preferred stock, par value $0.01; authorized 50,000 shares; none issued
Common stock, par value $0.01; authorized 300,000 shares; issued 143,261 and outstanding 129,511 as of May 2020; issued 142,439 and outstanding 130,995 as of May 2019	1,295	1,310
Paid-in capital	1,014,428	994,508
Treasury stock, at cost	(580,117)	(437,290)
Accumulated other comprehensive (loss)	(717,497)	(577,628)
Retained earnings	1,544,336	1,425,052
Total RPM International Inc. stockholders' equity	1,262,445	1,405,952
Noncontrolling Interest	2,218	2,653
Total equity	1,264,663	1,408,605
Total Liabilities and Stockholders' Equity	$ 5,630,954	$ 5,441,355

Consolidated Balance Sheet (Par

Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Statement Of Financial Position [Abstract]
Trade accounts receivable, allowances	$ 55,847	$ 54,748
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	50,000,000	50,000,000
Preferred stock, issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	300,000,000	300,000,000
Common stock, issued	143,261,000	142,439,000
Common stock, outstanding	129,511,000	130,995,000

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		May 31, 2020	May 31, 2019	May 31, 2018
Income Statement [Abstract]
Net Sales	[1]	$ 5,506,994	$ 5,564,551	$ 5,321,643
Cost of Sales		3,414,139	3,476,231	3,305,095
Gross Profit		2,092,855	2,088,320	2,016,548
Selling, General and Administrative Expenses		1,548,653	1,596,043	1,498,479
Restructuring Expense		33,108	42,310	17,514
Goodwill and Other Intangible Asset Impairments			4,190
Interest Expense		101,003	102,392	104,547
Investment (Income), Net		(9,739)	(730)	(20,442)
Other Expense (Income), Net		12,066	4,270	(598)
Income Before Income Taxes		407,764	339,845	417,048
Provision for Income Taxes		102,682	72,158	77,791
Net Income		305,082	267,687	339,257
Less: Net Income Attributable to Noncontrolling Interests		697	1,129	1,487
Net Income Attributable to RPM International Inc. Stockholders		$ 304,385	$ 266,558	$ 337,770
Average Number of Shares of Common Stock Outstanding:
Basic		128,468	130,552	131,179
Diluted	[2]	129,974	134,333	137,171
Earnings per Share of Common Stock Attributable to RPM International Inc. Stockholders:
Basic		$ 2.35	$ 2.03	$ 2.55
Diluted		$ 2.34	$ 2.01	$ 2.50
[1]	It is not practicable to obtain the information needed to disclose revenues attributable to each of our product lines.
[2]	For the years ended May 31, 2020, 2019 and 2018, approximately 340,000, 862,500 and 799,362 shares of stock, respectively, granted under stock-based compensation plans were excluded from the calculation of diluted EPS, as the effect would have been anti-dilutive.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net Income	$ 305,082	$ 267,687	$ 339,257
Other Comprehensive Income, Before Tax:
Foreign Currency Translation Adjustments	(71,839)	(73,594)	10,857
Pension and Other Postretirement Benefit Liabilities
Net (Loss) Arising During the Period	(109,358)	(87,525)	(3,489)
Prior Service Cost Arising During the Period	893	22	61
Less: Amortization of Prior Service Cost Included in Net Periodic Pension Cost	(246)	(132)	(121)
Less: Amortization of Net Loss and Settlement Recognition	21,176	14,848	16,738
Effect of Exchange Rates on Amounts Included for Pensions	1,188	2,002	(1,814)
Pension and Other Postretirement Benefit Liability Adjustments	(86,347)	(70,785)	11,375
Unrealized Gains on Available-For-Sale Securities
Unrealized Holding Gains (Losses) During the Period	1,210	458	(1,459)
Less: Reclassification Adjustments for Losses (Gains) Included in Net Income		1,626	(1,835)
Unrealized Gain (Loss) on Securities	1,210	2,084	(3,294)
Unrealized Gain (Loss) on Derivatives	(6,315)	4,713	(359)
Other Comprehensive (Loss) Income, Before Tax	(163,291)	(137,582)	18,579
Income Tax Expense (Benefit) Related to Components of Other Comprehensive Income	23,403	19,068	(3,773)
Other Comprehensive (Loss) Income, After Tax	(139,888)	(118,514)	14,806
Comprehensive Income	165,194	149,173	354,063
Less: Comprehensive Income Attributable to Noncontrolling Interests	678	1,195	1,354
Comprehensive Income Attributable to RPM International Inc. Stockholders	$ 164,516	$ 147,978	$ 352,709

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		May 31, 2020	May 31, 2019	May 31, 2018
Cash Flows From Operating Activities:
Net Income		$ 305,082	$ 267,687	$ 339,257
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation & Amortization		156,842	141,742	128,499
Restructuring charges, net of payments		6,831	8,072	17,514
Goodwill, intangible and other asset impairments			4,190
Fair value adjustments to contingent earnout obligations		680	1,918	3,400
Deferred income taxes		(12,150)	5,434	(10,690)
Stock-based compensation expense		19,789	31,154	25,440
Other non-cash interest expense			1,552	6,187
Realized/unrealized losses (gains) on sales of marketable securities		(1,132)	7,613	(10,076)
Loss on extinguishment of debt	[1]		3,051
Other		(77)	(3,288)	(1,141)
Changes in assets and liabilities, net of effect from purchases and sales of businesses:
Decrease (Increase) in receivables		82,060	(131,204)	(106,179)
Decrease (Increase) in inventory		21,309	(16,829)	(34,102)
Decrease (Increase) in prepaid expenses and other current and long-term assets		17,614	(14,826)	3,348
(Decrease) increase in accounts payable		(27,111)	(29,628)	51,641
(Decrease) increase in accrued compensation and benefits		(6,198)	19,241	(5,010)
(Decrease) increase in accrued losses		487	(1,803)	(10,387)
(Decrease) in other accrued liabilities		(23,665)	(5,232)	(6,612)
Other		9,558	4,097	(706)
Cash Provided By Operating Activities		549,919	292,941	390,383
Cash Flows From Investing Activities:
Capital expenditures		(147,756)	(136,757)	(114,619)
Acquisition of businesses, net of cash acquired		(65,102)	(168,205)	(112,442)
Purchase of marketable securities		(28,891)	(19,787)	(181,953)
Proceeds from sales of marketable securities		31,337	69,743	138,803
Other		799	6,760	9,018
Cash (Used For) Investing Activities		(209,613)	(248,246)	(261,193)
Cash Flows From Financing Activities:
Additions to long-term and short-term debt		485,306	628,083	351,082
Reductions of long-term and short-term debt		(471,035)	(273,109)	(276,406)
Cash dividends		(185,101)	(181,409)	(167,476)
Repurchase of common stock		(125,000)	(200,222)
Shares of common stock returned for taxes		(18,075)	(21,758)	(17,152)
Payments of acquisition-related contingent consideration		(606)	(4,066)	(3,945)
Payments for 524(g) trust				(123,567)
Other		(2,359)	(1,361)	(1,912)
Cash (Used For) Financing Activities		(316,870)	(53,842)	(239,376)
Effect of Exchange Rate Changes on Cash and Cash Equivalents		(13,188)	(12,107)	4,111
Net Change in Cash and Cash Equivalents		10,248	(21,254)	(106,075)
Cash and Cash Equivalents at Beginning of Period		223,168	244,422	350,497
Cash and Cash Equivalents at End of Period		233,416	223,168	244,422
Cash paid during the year for:
Interest		103,143	101,415	97,295
Income taxes, net of refunds		$ 102,892	68,357	$ 83,460
Supplemental Disclosures of Non-Cash Investing and Financing Activities:
Conversion of Debt to Equity			$ 38,239
[1]	Reflects the loss incurred upon divestiture of a contracting business located in Australia, which had reported through our PCG segment. In connection with the redemption of all of our outstanding 2.25% convertible senior notes in November 2018, we recognized a loss of $3.1 million, due to the fair value remeasurement on the date of conversion

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Total RPM International Inc. Equity	Noncontrolling Interests
Beginning Balance at May. 31, 2017	$ 1,438,700	$ 1,336	$ 954,491	$ (218,222)	$ (473,986)	$ 1,172,442	$ 1,436,061	$ 2,639
Beginning Balance (in shares) at May. 31, 2017		133,563,000
Net income	339,257					337,770	337,770	1,487
Other comprehensive income (loss)	14,806				14,938		14,938	(132)
Dividends declared and paid	(167,476)					(167,476)	(167,476)
Other noncontrolling interest activity	$ (1,229)							(1,229)
Share repurchases under repurchase program (in shares)	0
Stock compensation expense and other deferred compensation, shares granted less shares returned for taxes	$ 9,480		27,576	(18,096)			9,480
Stock compensation expense and other deferred compensation, shares granted less shares returned for taxes (in shares)		84,000
Ending Balance at May. 31, 2018	1,633,538	$ 1,336	982,067	(236,318)	(459,048)	1,342,736	1,630,773	2,765
Ending Balance (in shares) at May. 31, 2018		133,647,000
Cumulative-effect adjustment upon adoption of ASU 2014-09 at May. 31, 2018	(2,833)					(2,833)	(2,833)
Net income	267,687					266,558	266,558	1,129
Other comprehensive income (loss)	(118,514)				(118,580)		(118,580)	66
Dividends declared and paid	(181,409)					(181,409)	(181,409)
Other noncontrolling interest activity	(1,307)							(1,307)
Share repurchases under repurchase program	$ (200,222)	$ (33)	33	(200,222)			(200,222)
Share repurchases under repurchase program (in shares)	(3,286,907)	(3,287,000)
Stock compensation expense and other deferred compensation, shares granted less shares returned for taxes	$ 14,473	$ 1	35,437	(20,965)			14,473
Stock compensation expense and other deferred compensation, shares granted less shares returned for taxes (in shares)		36,000
Convertible bond redemption	(2,808)	$ 6	(23,029)	20,215			(2,808)
Convertible bond redemption (in shares)		599,000
Ending Balance at May. 31, 2019	1,408,605	$ 1,310	994,508	(437,290)	(577,628)	1,425,052	1,405,952	2,653
Ending Balance (in shares) at May. 31, 2019		130,995,000
Net income	305,082					304,385	304,385	697
Other comprehensive income (loss)	(139,888)				(139,869)		(139,869)	(19)
Dividends declared and paid	(185,101)					(185,101)	(185,101)
Other noncontrolling interest activity	(1,113)							(1,113)
Share repurchases under repurchase program	$ (125,000)	$ (20)	20	(125,000)			(125,000)
Share repurchases under repurchase program (in shares)	(2,041,847)	(2,042,000)
Stock compensation expense and other deferred compensation, shares granted less shares returned for taxes	$ 2,078	$ 5	19,900	(17,827)			2,078
Stock compensation expense and other deferred compensation, shares granted less shares returned for taxes (in shares)		558,000
Ending Balance at May. 31, 2020	$ 1,264,663	$ 1,295	$ 1,014,428	$ (580,117)	$ (717,497)	$ 1,544,336	$ 1,262,445	$ 2,218
Ending Balance (in shares) at May. 31, 2020		129,511,000

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Statement Of Stockholders Equity [Abstract]
Dividends declared and paid per share	$ 1.43	$ 1.37	$ 1.26

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	May 31, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE A — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES 1) Consolidation, Noncontrolling Interests and Basis of Presentation Our financial statements include all of our majority-owned subsidiaries. We account for our investments in less-than-majority-owned joint ventures, for which we have the ability to exercise significant influence, under the equity method. Effects of transactions between related companies are eliminated in consolidation. Noncontrolling interests are presented in our Consolidated Financial Statements as if parent company investors (controlling interests) and other minority investors (noncontrolling interests) in partially owned subsidiaries have similar economic interests in a single entity. As a result, investments in noncontrolling interests are reported as equity in our Consolidated Financial Statements. Additionally, our Consolidated Financial Statements include 100% of a controlled subsidiary’s earnings, rather than only our share. Transactions between the parent company and noncontrolling interests are reported in equity as transactions between stockholders, provided that these transactions do not create a change in control. Our business is dependent on external weather factors. Historically, we have experienced strong sales and net income in our first, second and fourth fiscal quarters comprising the three-month periods ending August 31, November 30 and May 31, respectively, with weaker performance in our third fiscal quarter (December through February). 2) Use of Estimates The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. 3) Acquisitions/Divestitures We account for business combinations and asset acquisitions using the acquisition method of accounting and, accordingly, the assets and liabilities of the acquired entities are recorded at their estimated fair values at the acquisition date. During the fiscal year ended May 31, 2020, we completed a total of three acquisitions among three of our four reportable segments. Within our CPG reportable segment, we acquired a manufacturer and marketer of joint sealants for commercial construction headquartered in Hudson, New Hampshire. Within our PCG reportable segment, we acquired a manufacturer of trenchless pipe rehabilitation equipment headquartered in Quebec, Canada. Lastly, within our SPG reportable segment, we acquired a manufacturer of dry stabilizer and emulsifier blends for the food industry, headquartered in Elgin, Illinois. During the fiscal year ended May 31, 2019, we completed a total of five acquisitions among three of our four reportable segments. During fiscal 2019, our CPG reportable segment completed two acquisitions, which included the following: a leading manufacturer and distributor of insulated concrete forms in North America, based in Ontario, Canada; and a distributor of concrete admixture products throughout Puerto Rico, the Dominican Republic and Panama. Within our PCG reportable segment, we acquired a provider of hygienic flooring solutions for the U.K. food and beverage industry, headquartered in the United Kingdom. Within our Consumer reportable segment, we acquired a brand line of specialty cleaning products and the exclusive North American licensing for a brand line of drain care products based in Cincinnati, Ohio; and a manufacturer of non-toxic specialty cleaners based in Ontario, Canada. The purchase price for each acquisition has been allocated to the estimated fair values of the assets acquired and liabilities assumed as of the date of acquisition. We have finalized the purchase price allocation for our fiscal 2019 acquisitions, and there was a $2.8 million adjustment reducing the fair value of deferred income taxes associated with the Consumer reportable segment’s acquisition of a manufacturer of non-toxic specialty cleaners based in Ontario, Canada. This adjustment is reflected in the “Fiscal 2019 Acquisitions” column of the table below. For acquisitions completed during fiscal 2020, the valuations of consideration transferred, total assets acquired and liabilities assumed are substantially complete. The primary areas that remain preliminary relate to the fair values of deferred income taxes. Acquisitions are aggregated by year of purchase in the following table: Fiscal 2020 Acquisitions Fiscal 2019 Acquisitions (In thousands) Weighted-Average Intangible Asset Amortization Life (In Years) Total Weighted-Average Intangible Asset Amortization Life (In Years) Total Current assets $ 10,649 $ 29,737 Property, plant and equipment 1,694 22,607 Goodwill N/A 28,291 N/A 75,142 Trade names - indefinite lives N/A 1,555 N/A 14,033 Other intangible assets 16 31,046 10 59,748 Other long-term assets 56 3,095 Total Assets Acquired $ 73,291 $ 204,362 Liabilities assumed (7,135 ) (33,174 ) Net Assets Acquired $ 66,156 (1) $ 171,188 (2) (1) Figure includes cash acquired of $ 1.6 (2) Figure includes cash acquired of $2.3 million. Our Consolidated Financial Statements reflect the results of operations of acquired businesses as of their respective dates of acquisition. Pro-forma results of operations for the years ended May 31, 2020 and 2019 were not materially different from reported results and, consequently, are not presented. 4) Foreign Currency The functional currency for each of our foreign subsidiaries is its principal operating currency. Accordingly, for the periods presented, assets and liabilities have been translated using exchange rates at year end, while income and expense for the periods have been translated using a weighted-average exchange rate. The resulting translation adjustments have been recorded in accumulated other comprehensive income (loss), a component of stockholders’ equity, and will be included in net earnings only upon the sale or liquidation of the underlying foreign investment, neither of which is contemplated at this time. Transaction gains and losses increased during the last three fiscal years due to the fluctuations in strength of the U.S. dollar, resulting in net transactional foreign exchange gains in fiscal 2020 of approximately $0.3 million and net transactional foreign exchange losses for fiscal 2019 and 2018 of approximately $4.8 million and $12.3 million, respectively. 5) Cash and Cash Equivalents We consider all highly liquid debt instruments purchased with a maturity of three months or less to be cash equivalents. We do not believe we are exposed to any significant credit risk on cash and cash equivalents. The carrying amounts of cash and cash equivalents approximate fair value. 6 ) Property, Plant & Equipment May 31, 2020 2019 (In thousands) Land $ 85,860 $ 88,638 Buildings and leasehold improvements 469,483 459,542 Machinery and equipment 1,199,847 1,114,679 Total property, plant and equipment, at cost 1,755,190 1,662,859 Less: allowance for depreciation and amortization 905,504 843,648 Property, plant and equipment, net $ 849,686 $ 819,211 We review long-lived assets for impairment when circumstances indicate that the carrying values of these assets may not be recoverable. For assets that are to be held and used, an impairment charge is recognized when the estimated undiscounted future cash flows associated with the asset or group of assets are less than their carrying value. If impairment exists, an adjustment is made to write the asset down to its fair value, and a loss is recorded for the difference between the carrying value and the fair value. Fair values are determined based on quoted market values, discounted cash flows, internal appraisals or external appraisals, as applicable. Assets to be disposed of are carried at the lower of their carrying value or estimated net realizable value. Depreciation is computed primarily using the straight-line method over the following ranges of useful lives: Buildings and leasehold improvements 1 to 50 years Machinery and equipment 1 to 40 years Total depreciation expense for each fiscal period includes the charges to income that result from the amortization of assets recorded under finance leases. For the periods ended May 31, 2020, 2019, & 2018, we recorded depreciation expense of $108.5 million, $94.0 million, and 7) Revenue Recognition Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. The majority of our revenue is recognized at a point in time. However, we also record revenues generated under construction contracts, mainly in connection with the installation of specialized roofing and flooring systems and related services. For certain polymer flooring installation projects, we account for our revenue using the output method, as we consider square footage of completed flooring to be the best measure of progress toward the complete satisfaction of the performance obligation. In contrast, for certain of our roofing installation projects, we account for our revenue using the input method, as that method was the best measure of performance as it considers costs incurred in relation to total expected project costs, which essentially represents the transfer of control for roofing systems to the customer. In general, for our other construction contracts, we record contract revenues and related costs as our contracts progress on an over-time model. Effective June 1, 2018, we adopted Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers,” and all the related amendments included within Accounting Standards Codification 606 (“ASC 606”). 8) Shipping Costs During the first quarter of fiscal 2020, we changed our method of accounting for shipping and handling costs, which we have identified as costs paid to third-party shippers for transporting products to customers. Under the new method of accounting, we include shipping costs in cost of sales, whereas previously, they were included in SG&A expense. We believe that including these expenses in cost of sales is preferable, as it better aligns these costs with the related revenue in the gross profit calculation and is consistent with the practices of other industry peers. This change in accounting principle has been applied retrospectively, and the Consolidated Statements of Income reflect the effect of this accounting principle change for all periods presented. This reclassification had no impact on income before income taxes, net income attributable to RPM International Inc. Stockholders, net income or earnings per share. The Consolidated Balance Sheets, Statements of Comprehensive Income, Statements of Stockholders’ Equity, and Statements of Cash Flows were not impacted by this accounting principle change. The Consolidat ed Statements of Income for fiscal 2019 and 2018 have been adjusted to reflect this change in accounting principle. The impact of the adjustment for fiscal 2019 and 2018 was an increase of $173.6 million and $164.7 million, respectively, to cost of sal es and a corresponding decrease to SG&A expense. 9) Allowance for Doubtful Accounts Receivable An allowance for anticipated uncollectible trade receivable amounts is established using a combination of specifically identified accounts to be reserved and a reserve covering trends in collectibility. These estimates are based on an analysis of trends in collectibility and past experience, but are primarily made up of individual account balances identified as doubtful based on specific facts and conditions. Receivable losses are charged against the allowance when we determine uncollectibility. Actual collections of trade receivables could differ from our estimates due to changes in future economic or industry conditions or specific customer’s financial conditions. For the periods ended May 31, 2020, 2019 and 2018, bad debt expense approximated $16.7 million, $18.6 million and $9.1 million, respectively. Bad debt expense remained elevated in fiscal 2020 due to additional write-offs associated with exiting unprofitable product lines and regions in conjunction with our 2020 MAP to Growth and, to a much lesser degree, due to the impact Covid-19 is having on some of our customers’ ability to pay timely. The increase in bad debt expense during fiscal 2019 was primarily due to write-offs associated with our 2020 MAP to Growth. Refer to Note B, “Restructuring,” for further information. 10) Inventories Inventories are stated at the lower of cost or net realizable value, cost being determined on a first-in, first-out (FIFO) basis and net realizable value being determined on the basis of replacement cost. Inventory costs include raw materials, labor and manufacturing overhead. We review the net realizable value of our inventory in detail on an on-going basis, with consideration given to various factors, which include our estimated reserves for excess, obsolete, slow-moving or distressed inventories. If actual market conditions differ from our projections, and our estimates prove to be inaccurate, write-downs of inventory values and adjustments to cost of sales may be required. Historically, our inventory reserves have approximated actual experience. For the periods ended May 31, 2020, 2019 and 2018, charges related to slow moving and/or obsolete inventory on hand approximated $39.6 million, $29.4 million and $43.7 million, respectively. During fiscal 2020, we recorded $28.8 million within our Consumer reportable segment as we continued to proactively manage excess quantities of inventory in order to accelerate cash conversion, SKU rationalization, and exiting unprofitable product lines and regions and $3.2 million within our PCG segment related to exiting unprofitable product lines and regions. During fiscal 2019, we recorded $10.5 million in charges resulting from more proactive management of inventory at our Consumer segment, and $9.0 million and $1.0 million of inventory charges related to restructuring activities at our PCG and CPG segments, respectively. During fiscal 2018, our Consumer reportable segment was impacted by tighter inventory management at many of their top customers and we made the determination to consolidate several divisions within certain Consumer segment businesses, close two manufacturing facilities and eliminate approximately 154 positions. These actions were taken by new leadership in place at our Rust-Oleum business in order to streamline processes, reduce overhead, improve margins and reduce working capital. In relation to these initiatives, our Consumer segment recognized $36.5 million of charges related to product line and SKU rationalization and related obsolete inventory identification during the fourth quarter of fiscal 2018. Additionally, during fiscal 2018, we incurred $1.2 million in inventory write-offs in connection with restructuring activities at our CPG reportable segment. Inventories were composed of the following major classes: May 31, 2020 2019 (In thousands) Raw material and supplies $ 282,579 $ 296,493 Finished goods 527,869 545,380 Total Inventory $ 810,448 $ 841,873 11) Goodwill and Other Intangible Assets We account for goodwill and other intangible assets in accordance with the provisions of ASC 350 and account for business combinations using the acquisition method of accounting and, accordingly, the assets and liabilities of the entities acquired are recorded at their estimated fair values at the acquisition date. Goodwill represents the excess of the purchase price paid over the fair value of net assets acquired, including the amount assigned to identifiable intangible assets. Goodwill is assigned to reporting units tha t are expected to benefit from the synergies of the business combination as of the acquisition date. Once goodwill has been allocated to the reporting units, it no longer retains its identification with a particular acquisition and becomes identified with the reporting unit in its entirety. Accordingly, the fair value of the reporting unit as a whole is available to support the recoverability of its goodwill. We evaluate our reporting units when changes in our operating structure occur, and if necessary, re assign goodwill using a relative fair value allocation approach. We test our goodwill balances at least annually, or more frequently as impairment indicators arise, at the reporting unit level. Our annual impairment assessment date has been designated as the first day of our fourth fiscal quarter. Our reporting units have been identified at the component level, which is the operating segment level or one level below our operating segments. We follow the Financial Accounting Standards Board (“FASB”) guidance found in Accounting Standards Codification (“ASC”) 350 that simplifies how an entity tests goodwill for impairment. It provides an option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, and whether it is necessary to perform the two-step goodwill impairment test. We assess qualitative factors in each of our reporting units that carry goodwill. We assess these qualitative factors to determine whether it is necessary to perform the two-step quantitative goodwill impairment test. The traditional two-step quantitative process is required only if we conclude that it is more likely than not that a reporting unit’s fair value is less than its carrying amount. However, we have an unconditional option to bypass a qualitative assessment and proceed directly to performing the traditional two-step quantitative analysis. We applied the traditional two-step quantitative process during our annual goodwill impairment assessment performed during the fourth quarter of fiscal 2020 and applied both the qualitative and traditional two-step quantitative processes during our annual goodwill impairment assessment performed during the fourth quarters of fiscal 2019 and 2018. In applying the first step of the quantitative test, we compare the fair value of a reporting unit to its carrying value. Calculating the fair value of a reporting unit requires our use of estimates and assumptions. We use significant judgment in determining the most appropriate method to establish the fair value of a reporting unit. We estimate the fair value of a reporting unit by employing various valuation techniques, depending on the availability and reliability of comparable market value indicators, and employ methods and assumptions that include the application of third-party market value indicators and the computation of discounted future cash flows determined from estimated cashflow adjustments to a reporting unit’s annual projected earnings before interest, taxes, depreciation and amortization (“EBITDA”), or adjusted EBITDA, which adjusts for one-off items impacting revenues and/or expenses that are not considered by management to be indicative of ongoing operations. Our fair value estimations may include a combination of value indications from both the market and income approaches, as the income approach considers the future cash flows from a reporting unit’s ongoing operations as a going concern, while the market approach considers the current financial environment in establishing fair value. We evaluate discounted future cash flows determined from estimated cashflow adjustments to a reporting unit’s projected EBITDA. Under this approach, we calculate the fair value of a reporting unit based on the present value of estimated future cash flows. If the fair value of the reporting unit exceeds the carrying value of the net assets of the reporting unit, goodwill is not impaired. An indication that goodwill may be impaired results when the carrying value of the net assets of a reporting unit exceeds the fair value of the reporting unit. At that point, the second step of the impairment test is performed, which requires a fair value estimate of each tangible and intangible asset in order to determine the implied fair value of the reporting unit’s goodwill. If the carrying value of a reporting unit’s goodwill exceeds its implied fair value, then we record an impairment loss equal to the difference. In applying the discounted cash flow methodology, we rely on a number of factors, including future business plans, actual and forecasted operating results, and market data. The significant assumptions employed under this method include discount rates; revenue growth rates, including assumed terminal growth rates; and operating margins used to project future cash flows for a reporting unit. The discount rates utilized reflect market-based estimates of capital costs and discount rates adjusted for management’s assessment of a market participant’s view with respect to other risks associated with the projected cash flows of the individual reporting unit. Our estimates are based upon assumptions we believe to be reasonable, but which by nature are uncertain and unpredictable. We believe we incorporate ample sensitivity ranges into our analysis of goodwill impairment testing for a reporting unit, such that actual experience would need to be materially out of the range of expected assumptions in order for an impairment to remain undetected. Prior to our fiscal 2019 annual goodwill impairment test, in connection with our 2020 MAP to Growth, during the third fiscal quarter ended February 28, 2019, we changed the composition of certain of our reporting units that were included in our former industrial reportable segment. Accordingly, we performed an interim impairment test for each reporting unit that changed in accordance with ASC 350, “Intangibles – Goodwill and Other.” Our interim goodwill impairment assessments did not indicate the presence of any goodwill impairment for any of the reporting units tested. However, as previously disclosed during the period ended May 31, 2019, we noted that our Construction Product Group – Europe, which had $ 125.0 million of goodwill at February 28, 2019, had an excess of fair value over carrying value of approximately 9 % using the income approach. Our annual goodwill impairment test for fiscal year 2019, which considered both the income and market approach, res ulted in a substantial excess of fair value over carrying value. We continued to monitor the performance of this reporting unit during fiscal 2020, and did not note any interim indicators of impairment. Furthermore, our annual goodwill impairment test fo r fiscal 2020 resulted in a substantial excess of fair value over carrying value. On June 1, 2019 (i.e., at the beginning of fiscal 2020), the composition of our reportable segments was revised, as further discussed in Note R, “Segment Information.” Prior to implementing the revised segment reporting structure beginning in fiscal 2020, our previously disclosed Industrial segment comprised two operating segments, the CPG operating segment and the PCG operating segment. Each of these operating segments comprised several reporting units, all of which were tested during our last annual goodwill impairment test during the fourth quarter of fiscal 2019 and again during the fourth quarter of fiscal 2020. Also, in connection with our 2020 Map to Growth, we realigned certain businesses and management structure within our SPG segment. As such, our former Wood Finishes Group reporting unit was split into two separate reporting units: Guardian and Wood Finishes Group. Additionally, our former Kop-Coat Group reporting unit was split into two reporting units: Kop-Coat Industrial Protection Products and Kop-Coat Group. We performed an interim goodwill impairment test for each of the new reporting units upon the change in reportable segments, business realignment and management structure using a quantitative assessment. We concluded that the estimated fair values exceeded the carrying values for these new reporting units, and accordingly, no indications of impairment were identified as a result of these changes during the first quarter of fiscal 2020. As a result of the annual impairment assessments performed for fiscal 2020, 2019 and 2018, there were no goodwill impairments, including no reporting units that were at risk of failing step one of the traditional two-step quantitative analysis. Additionally, we test all indefinite-lived intangible assets for impairment at least annually during our fiscal fourth quarter. We follow the guidance provided by ASC 350 that simplifies how an entity tests indefinite-lived intangible assets for impairment. It provides an option to first assess qualitative factors to determine whether it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount before applying traditional quantitative tests. We applied both qualitative and quantitative processes during our annual indefinite-lived intangible asset impairment assessments performed during the fourth quarters of fiscal 2020, 2019 and 2018. The annual impairment assessment involves estimating the fair value of each indefinite-lived asset and comparing it with its carrying amount. If the carrying amount of the intangible asset exceeds its fair value, we record an impairment loss equal to the difference. Calculating the fair value of the indefinite-lived assets requires our significant use of estimates and assumptions. We estimate the fair values of our intangible assets by applying a relief-from-royalty calculation, which includes discounted future cash flows related to each of our intangible asset’s projected revenues. In applying this methodology, we rely on a number of factors, including actual and forecasted revenues and market data. Our required annual impairment tests of each of our indefinite-lived intangible assets performed during fiscal 2020, 2019, and 2018 did not result in any additional impairment loss. No impairment losses were recorded as a result of our annual impairment tests, however, we did record an impairment charge in both fiscal 2020 and fiscal 2019. In fiscal 2020, in connection with 2020 Map to Growth, we recorded an impairment charge of $4.0 million included in restructuring expense in our Consumer reportable segment for impairment losses on indefinite-lived trade names. In fiscal 2019, we recorded an impairment charge of $4.2 million, of which $2.0 million was recorded by our CPG reportable segment for impairment losses on indefinite-lived trade names and approximately $2.2 million was recorded by our SPG reportable segment for impairment losses on definite-lived customer-related intangibles. Refer to Note C “Goodwill and Other Intangible Assets” for additional details on these indefinite-lived intangible asset impairment charges. 12) Advertising Costs Advertising costs are charged to operations when incurred and are included in SG&A expenses. For the years ended May 31, 2020, 2019 and 2018, advertising costs were $49.7 million, $57.5 million and $58.0 million, respectively. 13) Research and Development Research and development costs are charged to operations when incurred and are included in SG&A expenses. The amounts charged to expense for the years ended May 31, 2020, 2019 and 2018 were $76.5 million, $71.6 million and $69.7 million, respectively. 14) Stock-Based Compensation Stock-based compensation represents the cost related to stock-based awards granted to our employees and directors, which may include restricted stock and stock appreciation rights (“SARs”). We measure stock-based compensation cost at the date of grant, based on the estimated fair value of the award. We recognize the cost as expense on a straight-line basis (net of estimated forfeitures) over the related vesting period. Refer to Note J, “Stock-Based Compensation,” for further information. 15) Investment (Income), Net Investment (income), net, consists of the following components: Year Ended May 31, 2020 2019 2018 (In thousands) Interest (income) $ (5,313 ) $ (4,885 ) $ (5,003 ) Net loss (gain) on marketable securities (1,629 ) 8,366 (11,704 ) Dividend (income) (2,797 ) (4,211 ) (3,735 ) Investment (income), net $ (9,739 ) $ (730 ) $ (20,442 ) Net Loss (Gain) on Marketable Securities During fiscal 2020, we recognized realized losses on sales of available-for-sale securities of $0.7 million, realized gains on trading securities of $0.9 million and unrealized losses on trading securities of $0.4 million. Also during the year ended May 31, 2020 we recognized unrealized gains of $1.8 million on marketable equity securities. During fiscal 2019, we recognized realized losses on sales of available-for-sale securities of $3.0 million, realized gains on trading securities of $0.5 million and unrealized losses on trading securities of $1.3 million. Also during the year ended May 31, 2019, we recognized unrealized losses of $4.6 million on marketable equity securities as a result of our adoption of ASU 2016-01. During fiscal 2018, we recognized gross realized gains and losses on sales of marketable securities of $11.9 million and $1.8 million, respectively. 16) Other Expense (Income), Net Other expense (income), net, consists of the following components: Year Ended May 31, 2020 2019 2018 (In thousands) Royalty expense (income), net (a) $ 5,206 $ (96 ) $ 404 (Income) related to unconsolidated equity affiliates (165 ) (332 ) (1,002 ) Pension non-service costs 6,076 1,647 - Loss on extinguishment of debt (b) - 3,051 - Loss on divestiture (c) 949 - - Other expense (income), net $ 12,066 $ 4,270 $ (598 ) (a) Includes a $5.3 million charge incurred during the fourth quarter of fiscal 2020 related to the termination of a licensing agreement within our Consumer reportable segment. (b) Reflects the loss incurred upon divestiture of a contracting business located in Australia, which had reported through our PCG segment. In connection with the redemption of all of our outstanding 2.25% convertible senior notes in November 2018, we recognized a loss of $3.1 million, due to the fair value remeasurement on the date of conversion. (c) Reflects the loss incurred upon divestiture of a contracting business located in Australia, which had reported through our PCG segment. 17) Income Taxes The provision for income taxes is calculated using the asset and liability method. Under the asset and liability method, deferred income taxes are recognized for the tax effect of temporary differences between the financial statement carrying amount of assets and liabilities and the amounts used for income tax purposes and for certain changes in valuation allowances. Valuation allowances are recorded to reduce certain deferred tax assets when, in our estimation, it is more likely than not that a tax benefit will not be realized. 18) Earnings Per Share of Common Stock Earnings per share (EPS) is computed using the two-class method. The two-class method determines EPS for each class of common stock and participating securities according to dividends and dividend equivalents and their respective participation rights in undistributed earnings. Our unvested share-based payment awards that contain rights to receive non-forfeitable dividends are considered participating securities. Basic EPS of common stock is computed by dividing net income by the weighted-average number of shares of common stock outstanding for the period. Diluted EPS of common stock is computed on the basis of the weighted-average number of shares of common stock, plus the effect of dilutive potential shares of common stock outstanding during the period using the treasury stock method. Dilutive potential shares of common stock include outstanding SARS, restricted stock awards and convertible notes. See Note L, “Earnings Per Share of Common Stock,” for additional information. 19) Other Recent Accounting Pronouncements New Pronouncements Adopted In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842),” which increases lease transparency and comparability among organizations. Under the new standard, lessees are required to recognize a right-of-use (“ROU”) asset representing our right to use an underlying asset and a lease liability representing our obligation to make lease payments over the lease term, with the exception of leases with a term of 12 months or less, which permits a lessee to make an accounting policy election by class of underlying asset not to recognize lease assets and liabilities. ASU 2016-02 is effective for fiscal years beginning after Decembe

Restructuring

Restructuring	12 Months Ended
	May 31, 2020
Restructuring And Related Activities [Abstract]
Restructuring	NOTE B — RESTRUCTURING We record restructuring charges associated with management-approved restructuring plans to either reorganize one or more of our business segments, or to remove duplicative headcount and infrastructure associated with our businesses. Restructuring charges can include severance costs to eliminate a specified number of employees, infrastructure charges to vacate facilities and consolidate operations, contract cancellation costs and other costs. Restructuring charges are recorded based upon planned employee termination dates and site closure and consolidation plans. The timing of associated cash payments is dependent upon the type of restructuring charge and can extend over a multi-year period. We record the short-term portion of our restructuring liability in Other Accrued Liabilities and the long-term portion, if any, in Other Long-Term Liabilities in our Consolidated Balance Sheets. 2020 MAP to Growth Between May and August 2018, we approved and implemented the initial phases of a multi-year restructuring plan, the 2020 MAP to Growth. The initial phases of our 2020 MAP to Growth affected all of our reportable segments, as well as our corporate/nonoperating segment, and focused on margin improvement by simplifying business processes; reducing inventory categories and rationalizing SKUs; eliminating underperforming businesses; reducing headcount and working capital; and improving operating efficiency. The majority of the activities included in the initial phases of the restructuring activities have been completed. During the second quarter ended November 30, 2018, we formally announced the final phases of our 2020 MAP to Growth. This multi-year restructuring is expected to increase operational efficiency while maintaining our entrepreneurial growth culture and will include three additional phases originally expected to be implemented between September 2018 and December 2020. Recently, however, the disruption caused by the outbreak of Covid-19 is expected to delay the finalization of our 2020 MAP to Growth past the original target completion date of December 31, 2020. Our execution of the 2020 MAP to Growth will continue to drive the de-layering and simplification of management and businesses associated with group realignment. We have implemented four cent er-led functional areas including manufacturing and operations; procurement and supply chain; information technology; and accounting and finance. Our 2020 MAP to Growth optimizes our manufacturing facilities and will ultimately provide more efficient plant and distribution facilities. Through the balance sheet date, in association with our 2020 MAP to Growth, we have completed, or are in the process of completing, the planned closure of 22 plants and 25 warehouses. We also expect to incur additional severance and benefit costs as part of our planned closure of these facilities. Throughout the remaining phases of our 2020 MAP to Growth, we will continue to assess and identify areas of improvement and cost savings. As such, the final implementation of the aforementioned phases and total expected costs are subject to change. In addition to the announced plan, we have continued to broaden the scope of our 2020 MAP to Growth, specifically in consolidation of the general and administrative areas, potential outsourcing, as well as additional future plant closures and consolidations, the estimated costs of which have not yet been finalized. The current total expected costs associated with this plan are outlined in the table below and remained flat compared to our prior quarter estimate, reflecting decreases in expected severance and benefit costs of approximately $4.3 million, offset by increases in expected other asset write-offs and facility closure and other related costs of $3.8 million and $0.5 million, respectively. A summary of the charges recorded in connection with restructuring by reportable segment during is as follows: Year Ended Year Ended Year Ended Cumulative Costs Total Expected (in thousands) May 31, 2020 May 31, 2019 May 31, 2018 to Date Costs CPG Segment: Severance and benefit costs (a) $ 6,866 $ 9,459 $ 1,769 $ 18,094 $ 22,243 Facility closure and other related costs 1,508 1,924 1,045 4,477 7,140 Other asset write-offs 352 215 1,373 1,940 2,024 Total Charges $ 8,726 $ 11,598 $ 4,187 $ 24,511 $ 31,407 PCG Segment: Severance and benefit costs (b) $ 6,973 $ 6,012 $ 400 $ 13,385 $ 17,073 Facility closure and other related costs 1,873 3,474 - 5,347 7,349 Other asset write-offs 248 353 - 601 908 Total Charges $ 9,094 $ 9,839 $ 400 $ 19,333 $ 25,330 Consumer Segment: Severance and benefit costs (c) $ 3,089 $ 1,726 $ 5,652 $ 10,467 $ 11,493 Facility closure and other related costs 2,245 1,553 5,139 8,937 10,137 Other asset write-offs 4,094 25 - 4,119 4,119 Total Charges $ 9,428 $ 3,304 $ 10,791 $ 23,523 $ 25,749 SPG Segment: Severance and benefit costs (d) $ 1,592 $ 5,338 $ - $ 6,930 $ 8,267 Facility closure and other related costs 2,922 1,244 - 4,166 5,649 Other asset write-offs 119 1,003 - 1,122 1,170 Total Charges $ 4,633 $ 7,585 $ - $ 12,218 $ 15,086 Corporate/Other Segment: Severance and benefit costs (e) $ 1,227 $ 9,984 $ 2,136 $ 13,347 $ 13,347 Total Charges $ 1,227 $ 9,984 $ 2,136 $ 13,347 $ 13,347 Consolidated: Severance and benefit costs $ 19,747 $ 32,519 $ 9,957 $ 62,223 $ 72,423 Facility closure and other related costs 8,548 8,195 6,184 22,927 30,275 Other asset write-offs 4,813 1,596 1,373 7,782 8,221 Total Charges $ 33,108 $ 42,310 $ 17,514 $ 92,932 $ 110,919 a) Severance and benefit costs are associated with the elimination of 112 b) Severance and benefit costs are associated with the elimination of 161 c) Severance and benefit costs are associated with the elimination of 92 d) Severance and benefit costs are associated with the elimination of 94 e) Severance and benefit costs are associated with the elimination of two positions during fiscal 2020. Also reflects fiscal 2019 charges related to the severance of two two four three A summary of the activity in the restructuring reserves related to the 2020 MAP to Growth plan is as follows: (in thousands) Severance and Benefits Costs Facility Closure and Other Related Costs Other Asset Write-Offs Total Balance at June 1, 2018 $ 9,957 $ 6,184 $ 1,373 $ 17,514 Additions charged to expense 32,519 8,195 1,596 42,310 Cash payments charged against reserve (31,219 ) (3,019 ) - (34,238 ) Non-cash charges included above (f) (6,420 ) (3,503 ) (2,969 ) (12,892 ) Balance at May 31, 2019 $ 4,837 $ 7,857 $ - $ 12,694 Additions charged to expense 19,747 8,548 4,813 33,108 Cash payments charged against reserve (17,038 ) (9,239 ) - (26,277 ) Non-cash charges included above (f) (189 ) (1,286 ) (4,813 ) (6,288 ) Balance at May 31, 2020 $ 7,357 $ 5,880 $ - $ 13,237 (f) Non-cash charges primarily include accelerated vesting of equity awards and asset-write offs. In connection with our 2020 MAP to Growth, during fiscal 2020, we incurred approximately $16.3 million, $3.2 million, $0.7 million and $0.1 million of inventory-related charges at our Consumer, PCG, CPG and SPG segments, respectively. All of the aforementioned inventory-related charges were the result of the exit of a business or product line and SKU rationalization initiatives in connection with our overall plan of restructuring, and are recorded in cost of sales in our Consolidated Statements of Income. In connection with our 2020 MAP to Growth, during fiscal 2019, we incurred approximately $1.0 million, $9.0 million and $2.1 million of inventory-related charges at our CPG, PCG and Consumer segments, respectively. The inventory-related charges are partially offset by a favorable adjustment of approximately $0.2 million to the previous write-off at our Consumer segment. All of the aforementioned inventory-related charges were the result of the exit of a business or product line and SKU rationalization initiatives in connection with our overall plan of restructuring, and are recorded in cost of sales in our Consolidated Statements of Income. In connection with the 2020 MAP to Growth, during fiscal 2018, we incurred approximately $36.5 million of inventory-related charges at our Consumer segment and approximately $1.2 million at our CPG segment, all of which were recorded in cost of sales in our Consolidated Statements of Income. These inventory charges were the result of product line and SKU rationalization that was initiated in the fourth quarter of fiscal 2018 by new leadership within the Consumer segment. Refer to Note A(10) for additional information.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	May 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	NOTE C — GOODWILL AND OTHER INTANGIBLE ASSETS The changes in the carrying amount of goodwill, by reportable segment, for the years ended May 31, 2020 and 2019, are as follows: CPG PCG Consumer SPG (In thousands) Segment Segment Segment Segment Total Balance as of June 1, 2018 $ 372,033 $ 186,775 $ 477,718 $ 155,648 $ 1,192,174 Acquisitions 47,151 4,314 25,994 77,459 Translation adjustments & other (11,755 ) (5,830 ) (4,325 ) (1,961 ) (23,871 ) Balance as of May 31, 2019 407,429 185,259 499,387 153,687 1,245,762 Acquisitions 14,689 3,023 10,352 28,064 Translation adjustments & other (1) (16,764 ) (2,878 ) (3,169 ) (949 ) (23,760 ) Balance as of May 31, 2020 $ 405,354 $ 185,404 $ 496,218 $ 163,090 $ 1,250,066 (1) Activity includes a $2.3 million decrease to goodwill within our Consumer segment related to adjustments to preliminary purchase price allocations, primarily due to deferred tax adjustments. Total accumulated goodwill impairment losses were $156.3 million at May 31, 2020. Of the accumulated balance, $141.4 million was recorded during the fiscal year ended May 31, 2017 by a reporting unit that at the time was included in our Consumer segment and is now included in our SPG segment, and $14.9 million was recorded during the fiscal year ended May 31, 2009 by a reporting unit that at the time was included in our former Industrial reportable segment and is now included in our CPG segment. There were no impairment losses recorded during fiscal 2020, 2019 or 2018. Other intangible assets consist of the following major classes: Gross Net Other Amortization Carrying Accumulated Intangible (In thousands) Period (In Years) Amount Amortization Assets As of May 31, 2020 Amortized intangible assets Formulae 9 to 33 $ 230,621 $ (160,771 ) $ 69,850 Customer-related intangibles 5 to 33 439,153 (197,752 ) 241,401 Trademarks/names 5 to 40 30,700 (17,224 ) 13,476 Other 1 to 33 32,224 (23,281 ) 8,943 Total Amortized Intangibles 732,698 (399,028 ) 333,670 Indefinite-lived intangible assets Trademarks/names 250,710 250,710 Total Other Intangible Assets $ 983,408 $ (399,028 ) $ 584,380 As of May 31, 2019 Amortized intangible assets Formulae 9 to 33 $ 227,208 $ (150,091 ) $ 77,117 Customer-related intangibles 5 to 33 413,475 (172,238 ) 241,237 Trademarks/names 5 to 40 32,998 (16,867 ) 16,131 Other 1 to 33 36,709 (26,599 ) 10,110 Total Amortized Intangibles 710,390 (365,795 ) 344,595 Indefinite-lived intangible assets Trademarks/names 256,487 256,487 Total Other Intangible Assets $ 966,877 $ (365,795 ) $ 601,082 The aggregate intangible asset amortization expense for the fiscal years ended May 31, 2020, 2019 and 2018 was $45.6 million, $45.1 million and $43.2 million, respectively. For the next five fiscal years, we estimate annual intangible asset amortization expense related to our existing intangible assets to approximate the following: 2021 — $42.1 million, 2022 — $40.8 million, 2023 — $37.1 million, 2024 — $33.9 million and 2025 — $29.1 million. Total gross accumulated intangible asset impairment losses were $61.8 million at May 31, 2020, and were recorded in the following fiscal years: 2009 - $0.6 million was recorded by our former Industrial reportable segment; 2017 - $53.0 million was recorded at the time by our Consumer segment; 2018 - There were no impairment losses recorded during fiscal 2018; 2019 -

Marketable Securities

Marketable Securities	12 Months Ended
	May 31, 2020
Investments Debt And Equity Securities [Abstract]
Marketable Securities	NOTE D — MARKETABLE SECURITIES The following tables summarize available-for-sale debt securities held at May 31, 2020 and 2019 by asset type: Available-For-Sale Debt Securities (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Net Carrying Amount) May 31, 2020 Fixed maturity: U.S. treasury and other government $ 25,462 $ 1,314 $ (40 ) $ 26,736 Corporate bonds 143 43 186 Total available-for-sale debt securities $ 25,605 $ 1,357 $ (40 ) $ 26,922 Available-For-Sale Debt Securities (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Net Carrying Amount) May 31, 2019 Fixed maturity: U.S. treasury and other government $ 24,483 $ 372 $ (308 ) $ 24,547 Corporate bonds 422 43 (3 ) 462 Total available-for-sale debt securities $ 24,905 $ 415 $ (311 ) $ 25,009 Marketable securities are composed of available-for-sale debt securities, marketable equity securities and trading securities and all marketable securities are reported at fair value. We carry a portion of our marketable securities portfolio in long-term assets since they are generally held for the settlement of our general and product liability insurance claims processed through our wholly owned captive insurance subsidiaries. Available-for-sale debt securities are included in other current and long-term assets totaling $7.6 million and $19.3 million at May 31, 2020, respectively, and included in other current and long-term assets totaling $8.6 million and $16.4 million at May 31, 2019, respectively. Realized gains and losses on sales of available-for-sale debt securities are recognized in net income on the specific identification basis. Changes in the fair values of available-for-sale debt securities that are considered temporary are recorded as unrealized gains and losses, net of applicable taxes, in accumulated other comprehensive income (loss) within stockholders’ equity. Other-than-temporary declines in market value from original cost are reflected in investment income, net in the period in which the unrealized losses are deemed other than temporary. In order to determine whether other-than-temporary declines in market value have occurred, the duration of the decline in value and our ability to hold the investment are considered in conjunction with an evaluation of the strength of the underlying collateral and the extent to which the investment’s amortized cost or cost, as appropriate, exceeds its related market value. During fiscal 2019, we adopted ASU 2016-01, “Recognition and Measurement of Financial Assets and Liabilities,” which requires all unrealized gains and losses on marketable equity securities to be recognized in earnings. Prior to adoption, marketable equity securities were included in our available-for-sale portfolio and unrealized gains and losses were recognized through other comprehensive (loss) income until realized, at which point we recorded a gain or loss on sale. Subsequent to adoption, unrealized gains and losses on marketable equity securities, as well as realized gains and losses, on sales of marketable equity securities are included in investment (income), net in the Consolidated Statements of Income. Refer to Note A(15), “Investment (Income), Net,” for further details. Summarized below are the available-for-sale debt securities we held at May 31, 2020 and 2019 that were in an unrealized loss position and that were included in accumulated other comprehensive income (loss), aggregated by the length of time the investments had been in that position: May 31, 2020 May 31, 2019 (In thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Total investments with unrealized losses $ 2,028 $ (40 ) $ 11,508 $ (311 ) Unrealized losses with a loss position for less than 12 months - - 806 (2 ) Unrealized losses with a loss position for more than 12 months 2,028 (40 ) 10,702 (309 ) We have reviewed all of the securities included in the table above and have concluded that we have the ability and intent to hold these investments until their cost can be recovered, based upon the severity and duration of the decline. Therefore, we did not recognize any other-than-temporary impairment losses on these investments. The unrealized losses generally relate to investments whose fair values at May 31, 2020 and 2019 were less than 15% The net carrying values of available-for-sale debt securities at May 31, 2020, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties. (In thousands) Amortized Cost Fair Value Due: Less than one year $ 7,567 $ 7,581 One year through five years 10,170 10,623 Six years through ten years 6,084 6,591 After ten years 1,784 2,127 $ 25,605 $ 26,922

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	May 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE E — FAIR VALUE MEASUREMENTS Financial instruments recorded in the balance sheet include cash and cash equivalents, trade accounts receivable, marketable securities, notes and accounts payable, and debt. An allowance for anticipated uncollectible trade receivable amounts is established using a combination of specifically identified accounts to be reserved, and a reserve covering trends in collectibility. These estimates are based on an analysis of trends in collectibility and past experience, but are primarily made up of individual account balances identified as doubtful based on specific facts and conditions. Receivable losses are charged against the allowance when we confirm uncollectibility. All derivative instruments are recognized in our Consolidated Balance Sheets and measured at fair value. Changes in the fair values of derivative instruments that do not qualify as hedges and/or any ineffective portion of hedges are recognized as a gain or (loss) in our Consolidated Statements of Income in the current period. Changes in the fair value of derivative instruments used effectively as cash flow hedges are recognized in other comprehensive income (loss), along with the change in the value of the hedged item. We do not hold or issue derivative instruments for speculative purposes. The valuation techniques utilized for establishing the fair values of assets and liabilities are based on observable and unobservable inputs. Observable inputs reflect readily obtainable data from independent sources, while unobservable inputs reflect management’s market assumptions. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value, as follows: Level 1 Inputs — Quoted prices for identical instruments in active markets. Level 2 Inputs — Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable. Level 3 Inputs — Instruments with primarily unobservable value drivers. The following tables present our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy. In addition, with respect to our derivative assets and liabilities measured at fair value, refer to Note F – Derivatives and Hedging for discussion of their classification within the fair value hierarchy. (In thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value at May 31, 2020 Available-for-sale debt securities: U.S. Treasury and other government $ 26,736 $ 26,736 Corporate bonds 186 186 Total available-for-sale debt securities - 26,922 - 26,922 Trading and other equity securities: Stocks-domestic 3,870 3,870 Mutual funds - foreign 28,815 28,815 Mutual funds - domestic 63,536 63,536 Total trading and other equity securities 3,870 92,351 - 96,221 Contingent consideration (15,682 ) (15,682 ) Total $ 3,870 $ 119,273 $ (15,682 ) $ 107,461 (In thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value at May 31, 2019 Available-for-sale debt securities: U.S. Treasury and other government $ - $ 24,547 $ - $ 24,547 Corporate bonds 462 462 Total available-for-sale debt securities - 25,009 - 25,009 Trading and other equity securities: Mutual funds - foreign 32,082 32,082 Mutual funds - domestic 67,739 67,739 Total trading and other equity securities - 99,821 - 99,821 Contingent consideration (21,551 ) (21,551 ) Total $ - $ 124,830 $ (21,551 ) $ 103,279 Our investments in available-for-sale debt securities, marketable equity securities and trading and other equity securities are valued using a market approach. The availability of inputs observable in the market varies from instrument to instrument and depends on a variety of factors, including the type of instrument, whether the instrument is actively traded and other characteristics particular to the transaction. For most of our financial instruments, pricing inputs are readily observable in the market, the valuation methodology used is widely accepted by market participants, and the valuation does not require significant management discretion. For other financial instruments, pricing inputs are less observable in the market and may require management judgment. The contingent consideration represents the estimated fair value of the additional variable cash consideration payable in connection with recent acquisitions that is contingent upon the achievement of certain performance milestones. We estimated the fair value using expected future cash flows over the period in which the obligation is expected to be settled, and applied a discount rate that appropriately captures a market participant's view of the risk associated with the obligation, which are considered to be Level 3 inputs. During fiscal 2020, we paid approximately $6.4 million for settlements of contingent consideration obligations relating to certain performance milestones that were established in prior periods and achieved during the current year. During fiscal 2019, we paid approximately $5.2 million for settlements of contingent consideration obligations relating to certain performance milestones that were established in prior periods and achieved during fiscal 2019, and we increased our accrual by $3.0 million related to acquisitions completed during fiscal 2019 and $5.8 million related to fair value adjustments. These amounts are reported in payments of acquisition-related contingent consideration in the Consolidated Statements of Cash Flows. The carrying value of our current financial instruments, which include cash and cash equivalents, marketable securities, trade accounts receivable, accounts payable and short-term debt, approximates fair value because of the short-term maturity of these financial instruments. At May 31, 2020 and 2019, the fair value of our long-term debt was estimated using active market quotes, based on our current incremental borrowing rates for similar types of borrowing arrangements, which are Level 2 inputs. Based on the analysis performed, the fair value and the carrying value o f our financial instruments and long-term debt as of May 31, 2020 and 2019 are as follows: At May 31, 2020 (In thousands) Carrying Value Fair Value Cash and cash equivalents $ 233,416 $ 233,416 Marketable equity securities 87,111 87,111 Marketable debt securities 26,922 26,922 Long-term debt, including current portion 2,539,180 2,618,719 At May 31, 2019 (In thousands) Carrying Value Fair Value Cash and cash equivalents $ 223,168 $ 223,168 Marketable equity securities 87,525 87,525 Marketable debt securities 25,009 25,009 Long-term debt, including current portion 2,525,908 2,526,817

Derivatives and Hedging

Derivatives and Hedging	12 Months Ended
	May 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives and Hedging	NOTE F — DERIVATIVES AND HEDGING Derivative Instruments and Hedging Activities We are exposed to market risks, such as changes in foreign currency exchange rates and interest rates. To manage the volatility related to these exposures, from time to time, we enter into various derivative transactions. We use various types of derivative instruments, including forward contracts and swaps. We formally assess, designate and document, as a hedge of an underlying exposure, each qualifying derivative instrument that will be accounted for as an accounting hedge at inception. Additionally, we assess, both at inception and at least quarterly thereafter, whether the financial instruments used in the hedging transaction are effective at offsetting changes in either the fair values or cash flows of the underlying exposures. Derivatives Designated as Hedges In October 2017, as a means of mitigating the impact of currency fluctuations on our Euro investments in foreign entities, we executed a fair value hedge and two cross currency swaps, in which we paid variable rate interest in Euros and receive fixed rate interest in U.S. Dollars with a combined notional amount of approximately €85.25 million ($100 million U.S. Dollar equivalent), and which have a maturity date of November 2022. This effectively converted a portion of our U.S. Dollar denominated fixed-rate debt to Euro denominated variable rate debt. The fair value hedge was recognized at fair value in our Consolidated Balance Sheets, while changes in the fair value of the hedge were recognized in interest expense in our Consolidated Statements of Income. We designated the swaps as net investment hedges of our net investment in our European operations under ASU 2017-12 and applied the spot method to these hedges. In February 2020, the fair value hedge and two cross currency swaps agreements were terminated, and we received cash in the amount of $9.3 million, representing the fair value of the swap and interest accrued through the date of termination. Accordingly, hedge accounting was discontinued and a hedge accounting adjustment to our Senior Notes of $1.5 million was recorded and is being amortized to interest expense in the Consolidated Statements of Operations through the termination of the 3.450% Notes in November 2022. Changes in the fair value of the cross currency swaps due to spot foreign exchange rates are recorded as cumulative translation adjustment within AOCI and will remain in AOCI until either the sale or substantially complete liquidation of the hedged subsidiaries. Separately, in February 2020, as a means of mitigating the impact of currency fluctuations on our Euro investments in foreign entities, we executed a cash flow hedge and two cross currency swaps, in which we will pay fixed rate interest in Euros and receive variable rate interest in U.S. Dollars with a combined notional amount of approximately €277.73 million ($300 million U.S. Dollar equivalent), and which have a maturity date of February 2023. This effectively converts our U.S. Dollar denominated variable rate debt to Euro denominated fixed rate debt. The cash flow hedge is recognized at fair value in our Consolidated Balance Sheets, while changes in the fair value of the hedge will be recognized in AOCI when the hedged items affect earnings. Amounts recognized in AOCI will be recognized in earnings in interest expense when the hedged interest payment is accrued. We designated the swaps as net investment hedges of our net investment in our European operations under ASU 2017-12 and applied the spot method to these hedges. The changes in fair value of the derivative instruments that are designated and qualify as hedges of net investments in foreign operations are recognized in AOCI to offset the changes in the values of the net investments being hedged. In addition, in February 2020, as a means of mitigating the variability of the functional-currency-equivalent cash flows associated with the U.S. Dollar denominated term loan facility (referred to as Foreign Borrower’s Te rm Loan), we executed a cash flow hedge, in which we will pay fixed rate interest in Euros and receive variable rate interest in U.S. Dollars with a notional amount of approximately € 92.52 million ($ 100 million U.S. Dollar equivalent), and which have a maturity date of February 2023 . This effectively converts our U.S. Dollar denominated variable rate debt to Euro denominated fixed rate debt. The cash flow hedge is recognized at fair value in our Consolidated Balance Sheets, while changes in the fair v alue of the hedge will be recognized in AOCI when the hedged items affect earnings. Amounts recorded in AOCI will be recognized in earnings in interest expense when the hedged interest payment is accrued. In addition, since this currency swap is a hedge of variability of the functional currency equivalent cash flows of a recognized liability to be remeasured at spot exchange rates under ASC 830, an amount that will offset the gain or loss arising from the remeasurement of the hedged liability will be reclas sified each period from AOCI to earnings as foreign exchange gain/(loss), which is a component of SG&A expenses. The following table summarizes the location and effects of the Company’s derivatives instruments on the Consolidated Statements of Comprehensive Income and Consolidated Statements of Operations for gains or losses initially recognized in AOCI in the Consolidated Balance Sheet: Pretax gain/(loss) recognized in AOCI Pretax gain/(loss) reclassified from AOCI into income (In thousands) Year Ended May 31, Year Ended May 31, Derivatives in hedging relationships 2020 2019 2018 Income Statement Location 2020 2019 2018 Interest Rate Swap (Cash Flow) $ (7,998 ) $ - $ - Interest Expense $ 170 $ - $ - Cross Currency Swap (Cash Flow) (2,254 ) - - Interest Expense 554 - - Cross Currency Swap (Cash Flow) - - - Foreign Exchange Gain/(Loss) (2,654 ) - - Cross Currency Swap (Net Investment) 1,866 4,998 (769 ) Gain or (loss) on sale of subsidiary - - - Total $ (8,386 ) $ 4,998 $ (769 ) $ (1,930 ) $ - $ - Derivatives Not Designated as Hedges At May 31, 2020 and 2019, we held one foreign currency forward contract, which was designed to reduce our exposure to changes in the cash flows of intercompany foreign-currency-denominated loans related to changes in foreign currency exchange rates by fixing the functional currency cash flows. This contract has not been designated as a hedge; therefore, the changes in fair value of this derivative is recognized in earnings as a component of other (income) expense. Amounts recognized in earnings did not have a material impact on our Consolidated Financial Statements for any period presented. As of May 31, 2020 and May 31, 2019, the notional amounts of the forward contract held to purchase foreign currencies was $63.2 million and $38.7 million, respectively. Disclosure About Derivative Instruments All of our derivative assets and liabilities measured at fair value are classified as Level 2 within the fair value hierarchy. We determine the fair value of our derivatives based on valuation methods, which project future cash flows and discount the future amounts to present value using market-based observable inputs, including interest rate curves, foreign currency rates, as well as future and basis point spreads, as applicable. The fair values of qualifying and non-qualifying instruments used in hedging transactions as of May 31, 2020 and May 31, 2019 are as follows: (In thousands) Fair Value Derivatives Designated as Hedging Instruments Balance Sheet Location May 31, 2020 May 31, 2019 Assets: Interest Rate Swap (Fair Value) Other Current Assets $ - $ 513 Cross Currency Swap (Net Investment) Other Current Assets 5,352 2,482 Cross Currency Swap (Cash Flow) Other Current Assets 750 - Cross Currency Swap (Net Investment) Other Assets (Long-Term) 12,409 6,163 Liabilities: Interest Rate Swap (Fair Value) Other Accrued Liabilities - 230 Interest Rate Swap (Cash Flow) Other Accrued Liabilities 2,981 - Cross Currency Swap (Net Investment) Other Accrued Liabilities 294 - Cross Currency Swap (Net Investment) Other Long-Term Liabilities 18,204 4,276 Cross Currency Swap (Cash Flow) Other Long-Term Liabilities 3,608 - Interest Rate Swap (Cash Flow) Other Long-Term Liabilities 5,187 - (In thousands) Fair Value Derivatives Not Designated as Hedging Instruments Balance Sheet Location May 31, 2020 May 31, 2019 Assets: Foreign Currency Exchange Other Current Assets $ - $ 51 Liabilities: Foreign Currency Exchange Other Accrued Liabilities 53 -

Borrowings

Borrowings	12 Months Ended
	May 31, 2020
Debt Disclosure [Abstract]
Borrowings	NOTE G — BORROWINGS A description of long-term debt follows: May 31, 2020 2019 (In thousands) Revolving credit facility with a syndicate of banks, through October 31, 2023(1) $ 419,317 $ 336,442 Accounts receivable securitization program with two banks, through May 21, 2021 (2) 79,756 99,887 Unsecured 6.125% senior notes due October 15, 2019(3) - 450,454 Unsecured 3.45% senior notes due November 15, 2022 (8) 300,615 299,257 Unsecured $100M Term Loan due February 21, 2023 99,810 Unsecured $300M Term Loan due February 21, 2023 299,431 Unsecured 3.75% notes due March 15, 2027 (4) 397,058 396,586 Unsecured 4.55% senior notes due March 1, 2029(5) 346,514 346,006 Unsecured 5.25% notes due June 1, 2045(6) 298,668 298,589 Unsecured 4.25% notes due January 15, 2048 (7) 296,590 296,467 Other obligations, including finance leases and unsecured notes payable at various rates of interest due in installments through 2021 1,421 2,220 2,539,180 2,525,908 Less: current portion 80,890 552,446 Total Long-Term Debt, Less Current Maturities $ 2,458,290 $ 1,973,462 (1) Interest at May 31, 2020 was tied to LIBOR and averaged 1.5505% for USD denominated debt ($218,281), 1.4650% for AUD denominated debt ($37,199) and 1.3750% on EUR denominated debt ($167,537). Interest at May 31, 2019 was tied to LIBOR and averaged 3.6805% for USD denominated debt ($14,268), 2.69% for AUD denominated debt ($34,558), 3.23% on CAD denominated debt ($131,738) and 1.25% on EUR denominated debt ($159,745). At May 31, 2020 and 2019, the revolving credit facility is adjusted for debt issuance costs, net of amortization, for approximately $3.7 million and $3.9 million, respectively. (2) At May 31, 2020 and 2019, the accounts receivable securitization program is adjusted for debt issuance cost, net of amortization, for approximately $ 0.2 million and $ 0.1 million, respectively. (3) Includes the combination of the October 2009 initial issuance of $300.0 million aggregate principal amount and the May 2011 issuance of an additional $150.0 million aggregate principal amount of these notes. The effective interest rate on the notes issued in October 2009, including the amortization of the discount, was 6.139%. The additional $150.0 million aggregate principal amount of the notes due 2019 issued in May 2011 was adjusted for the unamortized premium received at issuance, which approximated $0.7 million at May 31, 2019. The premium effectively increased the proceeds from the financing. The effective interest rate on the $150.0 million notes issued in May 2011 is 4.934%. At May 31, 2019, the notes were adjusted for debt issuance costs, net of amortization, for approximately $0.2 million. During the second quarter of fiscal 2020, we used funds from our revolving credit facility to pay off our $450 million, 6.125% notes due in October 2019. (4) The $400.0 million face amount of the notes due 2027 is adjusted for the amortization of the original issue discount, which approximated $0.3 million and $0.4 million at May 31, 2020 and 2019, respectively. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, is 3.767%. At May 31, 2020 and 2019, the notes are adjusted for debt issuance costs, net of amortization, for approximately $2.6 million and $3.0 million, respectively. (5) The $350.0 million aggregate principal amount of the notes due 2029 is adjusted for the amortization of the original issue discount, which approximated $0.5 million at May 31, 2020 and 2019. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, was 4.568%. At May 31, 2020 and 2019, the notes were adjusted for debt issuance costs, net of amortization, for approximately $3.0 million and $3.5 million, respectively. (6) The $250.0 million face amount of the notes due 2045 is adjusted for the amortization of the original issue discount, which approximated $1.4 million at May 31, 2020 and 2019. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, is 5.29%. In March 2017, as a further issuance of the 5.25% notes due 2045, we closed an offering of $50.0 million aggregate principal, which is adjusted for the unamortized premium received at issuance, which approximated $2.9 million and $3.0 million at May 31, 2020 and 2019, respectively. The premium effectively increased the proceeds from the financing. The effective interest rate on the $50.0 million notes issued March 2017 is 4.839%. At May 31, 2020 and 2019, the notes are adjusted for debt issuance costs, net of amortization, for approximately $2.9 million and $3.0 million, respectively. (7) The $300.0 million face amount of the notes due 2048 is adjusted for the debt issuance cost, net of amortization, which approximated $3.4 million and $3.5 million at May 31, 2020 and 2019, respectively. The effective interest rate on the notes is 4.25%. (8) The $300.0 million face amount of the notes due 2022 is adjusted for the amortization of the original issue discount and mark-to-market derivative asset of approximated $0.1 million and ($1.3 million) at May 31, 2020 and approximated $0.1 million and ($0.3 million) at May 31, 2019, respectively. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, is 3.465%. At May 31, 2020 and 2019, the notes are reduced by debt issuance costs, net of amortization, for approximately $0.6 million and $0.9 million, respectively. The aggregate maturities of long-term debt for the five years subsequent to May 31, 2020 are as follows: 2021 — $80.9 million; 2022 — $0.3 million; 2023 — $700.6 million; 2024 — $419.3 million; 2025 — $0.0 million and thereafter $1,338.1 million. Additionally, at May 31, 2020, we had unused lines of credit totaling $1,046.9 million. Our available liquidity, including our cash and cash equivalents and amounts available under our committed credit facilities, stood at $1,280.4 million at May 31, 2020. Our debt-to-capital ratio was 66.8% at May 31, 2020, compared with 64.2% at May 31, 2019. Revolving Credit Agreement During the quarter ended November 30, 2018, we replaced our previous $800.0 million revolving credit agreement, which was set to expire on December 5, 2019, with a $1.3 billion unsecured syndicated revolving credit facility (the “Revolving Credit Facility”), which expires on October 31, 2023. The Revolving Credit Facility includes sublimits for the issuance of swingline loans, which are comparatively short-term loans used for working capital purposes and letters of credit. The aggregate maximum principal amount of the commitments under the Revolving Credit Facility may be expanded upon our request, subject to certain conditions, up to $1.5 billion. The Revolving Credit Facility is available to refinance existing indebtedness, to finance working capital and capital expenditures, and for general corporate purposes. On April 30, 2020, we amended both our Revolving Credit Facility and the New Credit Facility (see “Term Loan Facility Credit Agreement” section below for further details) to allow the maximum permitted Net Leverage Ratio to be increased from 3.75 to 1.00 to 4.25 to 1 for four consecutive fiscal quarters following notice to the Administrative Agent on or before June 30, 2021 and the payment of a ten basis point fee (“Increased Net Leverage Ratio Period”). Such increase is in addition to any increase requested by the Company in the maximum permitted Net Leverage Ratio following a Material Acquisition (any acquisition for which the aggregate consideration is $100.0 million or greater). During an Increased Net Leverage Ratio Period, the Euro-Rate Spread on loans under the Revolving Credit Facility shall be increased to 1.75% and the Base Rate Spread shall be 0.75% until the first day of the month following the Increased Net Leverage Ratio Period: provided, however, if at any time during an Increased Net Leverage Ratio, all three rating agencies rate the Company as non-investment grade, the Euro-Rate Spread shall be 2.00% and the Base Rate Spread shall be 1.0% in each case until earlier of the first day of the month after the Increased Net Leverage Ratio or the date on which at least one rating agency rates the Company as investment grade. As of May 31, 2020, we have not provided any notice to the Administrative Agent to trigger this provision of the agreement. The Revolving Credit Facility requires us to comply with various customary affirmative and negative covenants, including a leverage covenant (i.e., Net Leverage Ratio) and interest coverage ratio, which are calculated in accordance with the terms as defined by the credit agreement. Under the terms of the leverage covenant, we may not permit our leverage ratio for total indebtedness to consolidated EBITDA for the four most recent fiscal quarters to exceed 3.75 to 1.0. During certain periods and per the terms of the Revolving Credit Facility, this ratio may be increased to 4.25 to 1.0 in the event of an acquisition for which the aggregate consideration is $100.0 million or greater, or under the Increased Net Leverage Ratio Period. As of May 31, 2020, we were in compliance with all financial covenants contained in our Revolving Credit Facility, including the leverage and interest coverage ratio covenants. At that date, our leverage ratio was 2.89 to 1, while our interest coverage ratio was 8.31 to 1. Our available liquidity under our Revolving Credit Facility stood at $877.0 million at May 31, 2020. Our access to funds under our Revolving Credit Facility is dependent on the ability of the financial institutions that are parties to the Revolving Credit Facility to meet their funding commitments. Those financial institutions may not be able to meet their funding commitments if they experience shortages of capital and liquidity or if they experience excessive volumes of borrowing requests within a short period of time. Moreover, the obligations of the financial institutions under our Revolving Credit Facility are several and not joint and, as a result, a funding default by one or more institutions does not need to be made up by the others. Accounts Receivable Securitization Program On May 9, 2014, we entered into a $200.0 million accounts receivable securitization facility (the “AR Program”) which was subsequently amended on May 22, 2020 to a maximum availability of $250.0 million and an extended facility termination date of May 21, 2021. The AR Program was entered into pursuant to (1) a second amended and restated receivables sales agreement, dated as of May 9, 2014, and subsequently amended on August 29, 2014; November 3, 2015; December 31, 2016; and March 31, 2017 (the “Sale Agreement”), among certain of our subsidiaries (the “Originators”), and RPM Funding Corporation, a special purpose entity (the “SPE”) whose voting interests are wholly owned by us, and (2) an amended and restated receivables purchase agreement, dated as of May 9, 2014 and subsequently amended on February 25, 2015 and May 2, 2017 and May 22, 2020 (the “Purchase Agreement”), among the SPE, certain purchasers from time to time party thereto (the “Purchasers”), and PNC Bank, National Association as administrative agent. Under the Sale Agreement, the Originators may, during the term thereof, sell specified accounts receivable to the SPE, which may in turn, pursuant to the Purchase Agreement, transfer an undivided interest in such accounts receivable to the Purchasers. Once transferred to the SPE, such receivables are owned in their entirety by the SPE and are not available to satisfy claims of our creditors or creditors of the originating subsidiaries until the obligations owing to the participating banks have been paid in full. We indirectly hold a 100% economic interest in the SPE and will, along with our subsidiaries, receive the economic benefit of the AR Program. The transactions contemplated by the AR Program do not constitute a form of off-balance sheet financing and will be fully reflected in our financial statements. The maximum availability under the AR Program is $250.0 million. Availability is further subject to changes in the credit ratings of our customers, customer concentration levels or certain characteristics of the accounts receivable being transferred and, therefore, at certain times, we may not be able to fully access the $250.0 million of funding available under the AR Program. As of May 31, 2020, there was $80.0 million outstanding balance under the AR Program, which compares with the maximum availability on that date of $250.0 million. The interest rate under the Purchase Agreement is based on the Alternate Base Rate, LIBOR Market Index Rate, one-month LIBOR or LIBOR for a specified tranche period, as selected by us, plus in each case, a margin of 0.95%. In addition, as set forth in an Amended and Restated Fee Letter, dated May 22, 2020 (the “Fee Letter”), the SPE is obligated to pay a monthly unused commitment fee to the Purchasers based on the daily amount of unused commitments under the Agreement, which ranges from 0.30% to 0.50% based on usage. The AR Program contains various customary affirmative and negative covenants and also contains customary default and termination provisions. Our failure to comply with the covenants described above and other covenants contained in the Revolving Credit Facility section above could result in an event of default under that agreement, entitling the lenders to, among other things, declare the entire amount outstanding under the Revolving Credit Facility to be due and payable. The instruments governing our other outstanding indebtedness generally include cross-default provisions that provide that, under certain circumstances, an event of default that results in acceleration of our indebtedness under the Revolving Credit Facility will entitle the holders of such other indebtedness to declare amounts outstanding immediately due and payable. 3.45% Notes due 2022 On October 23, 2012, we sold $300 million aggregated principal amount of 3.45% Notes due 2022. The net proceeds of $297.7 million from this offering were used to repay short-term borrowings outstanding under our revolving credit facility. Term Loan Facility Credit Agreement On February 21, 2020, we and our subsidiary, RPM New Horizons Netherlands, B.V. (the “Foreign Borrower”), entered into an unsecured syndicated term loan facility credit agreement (the “New Credit Facility”) with the lenders party thereto and PNC Bank, National Association, as administrative agent for the lenders. The New Credit Facility provides for a $300 million term loan to the Company and a $100 million term loan to the Foreign Borrower (together, the “Term Loans”), each of which was fully advanced on the closing date. The Term Loans mature on February 21, 2023, with no scheduled amortization before that date, and the Term Loans may be prepaid at any time without penalty or premium. We agreed to guarantee all obligations of the Foreign Borrower under the New Credit Facility. The proceeds of the Term Loans were used to repay a portion of the outstanding borrowings under our revolving credit facility. The Term Loans will bear interest at either the base rate or the Eurodollar Rate, at our option, plus a spread determined by our debt rating. We, and the Foreign Borrower, have entered into multicurrency floating to fixed interest rate swap agreements that effectively fix interest payment obligations on the entire principal amount of the Term Loans through their maturity at (a) 0.612% per annum on our Term Loan, and (b) 0.558% per annum on the Foreign Borrower’s Term Loan. The New Credit Facility contains customary covenants, including but not limited to, limitations on our ability, and in certain instances, our subsidiaries’ ability, to incur liens, make certain investments, or sell or transfer assets. Additionally, we may not permit (i) our consolidated interest coverage ratio to be less than 3.5 to 1.0, or (ii) our leverage ratio (defined as the ratio of total indebtedness, less unencumbered cash and cash equivalents in excess of $50 million, to consolidated EBITDA for the four most recent fiscal quarters) to exceed 3.75 to 1.0. Upon notification to the lenders, however, the maximum permitted leverage ratio can be relaxed to 4.25 to 1.0 for a one-year period in connection with certain material acquisitions. In addition, the agreement was amended on April 30, 2020 to allow the maximum permitted Net Leverage Ratio to be increased to 4.25 to 1 during certain periods (refer to the “Revolving Credit Agreement”). The covenants contained in the New Credit Facility are substantially similar to those contained in our Revolving Credit Facility. See “Revolving Credit Agreement” above for details on our compliance with all significant financial covenants at May 31, 2020. 5.250% Notes due 2045 and 3.750% Notes due 2027 On March 2, 2017, we issued $50.0 million aggregate principal amount of 5.250% Notes due 2045 (the “2045 Notes”) and $400.0 million aggregate principal amount of 3.750% Notes due 2027 (the “2027 Notes”). The 2045 Notes are a further issuance of the $250 million aggregate principal amount of 5.250% Notes due 2045 initially issued by us on May 29, 2015. Interest on the 2045 Notes is payable semiannually in arrears on June 1st and December 1st of each year at a rate of 5.250% per year. The 2045 Notes mature on June 1, 2045. Interest on the 2027 Notes is payable semiannually in arrears on March 15th and September 15th of each year, at a rate of 3.750% per year. The 2027 Notes mature on March 15, 2027. 4.550% Notes due 2029 On February 27, 2019, we closed an offering for $350.0 million aggregate principal amount of 4.550% Notes due 2029 (the “2029 Notes”). The proceeds from the 2029 Notes were used to repay a portion of the outstanding borrowings under our revolving credit facility and for general corporate purposes. Interest on the 2029 Notes accrues from February 27, 2019 and is payable semiannually in arrears on March 1 st st 4.250% Notes due 2048 On December 20 , 2017, Interest on the 2048 Notes accrues from December 20, 2017 and is payable semiannually in arrears on January 15 th th 2.25% Convertible Senior Notes due 2020 On December 9, 2013, we issued $205 million of 2.25% Convertible Senior Notes due 2020 (the “Convertible Notes”). We paid interest on the Convertible Notes semi-annually on June 15 th th We completed the redemption of all $205.0 million aggregate principal amount of our outstanding Convertible Notes on November 27, 2018 (the “Redemption Date”). The redemption price for the Convertible Notes was equal to 100% of the principal amount of the Convertible Notes to be redeemed, plus accrued and unpaid interest until, but excluding, the Redemption Date. As a result of the issuance of the notice of redemption, the Convertible Notes became convertible at any time prior to the close of business on November 26, 2018. The conversion rate was 19.221062 shares of RPM common stock per $1,000 original principal amount of the Convertible Notes, which is equivalent to a conversion price of approximately $52.12 per share (subject to adjustment in accordance with the terms of the Indenture). In accordance with the provisions of the indenture for the Convertible Notes, we elected to settle the Convertible Notes surrendered for conversion through a combination settlement of cash and shares of RPM common stock. In settlement of those conversions, we paid an aggregate of approximately $204.6 million in cash, including cash in lieu of fractional shares, and issued 598,601 shares of RPM common stock in the aggregate.

Income Taxes

Income Taxes	12 Months Ended
	May 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	NOTE H — INCOME TAXES On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act (“Act”). The income tax effects of changes in tax laws are recognized in the period when enacted. Generally, the more significant provisions of the Act that impacted us for the year ended May 31, 2018 included the reduction in the U.S. corporate income tax rate from 35% to 21% and the creation of a territorial tax system (with a one-time mandatory tax on previously unremitted foreign earnings). The corporate tax rate reduction was effective for RPM as of January 1, 2018 and, accordingly, reduced our fiscal year 2018 federal statutory tax rate to a blended rate of 29.2%. The significant provisions of the Act that impact us for fiscal 2019, and thereafter, include the full federal statutory rate reduction to 21 %, the repeal of the domestic production activities deduction and the provisions of the Act that subject us to current U.S. tax on global intangible low-taxed inc ome (“GILTI”) earned by certain foreign subsidiaries and allows a benefit for foreign-derived intangible income (“FDII”). Subsequent to the enactment of the Act, the SEC issued Staff Accounting Bulletin No. 118 (“SAB 118”), which provides guidance on accounting for the tax effects of the Act. In accordance with SAB 118 and based on the information available as of May 31, 2018, we recorded a net provisional income tax expense of $7.3 million in accordance with the applicable provisions of the Act During fiscal 2019, we completed our assessment of the accounting for the impact of Act. As a result of this assessment, we recorded an income tax benefit of $8.1 million, which was comprised of a $6.3 million benefit for the re-measurement of certain U.S. deferred tax assets and liabilities and a $1.8 million benefit resulting from the reduction of the transition tax on unremitted earnings from foreign subsidiaries. For the year ended May 31, 2020, the provision for income taxes is calculated in accordance with ASC 740, which requires the recognition of deferred income taxes using the asset and liability method. Income before income taxes as shown in the Consolidated Statements of Income is summarized below for the periods indicated. Year Ended May 31, 2020 2019 2018 (In thousands) United States $ 317,290 $ 215,201 $ 228,976 Foreign 90,474 124,644 188,072 Income Before Income Taxes $ 407,764 $ 339,845 $ 417,048 Provision (benefit) for income taxes consists of the following for the periods indicated: Year Ended May 31, 2020 2019 2018 (In thousands) Current: U.S. federal $ 65,195 $ 20,388 $ 27,206 State and local 17,743 8,623 8,617 Foreign 31,894 37,713 52,658 Total Current 114,832 66,724 88,481 Deferred: U.S. federal (19,212 ) 15,298 (8,054 ) State and local (3,031 ) 1,414 4,832 Foreign 10,093 (11,278 ) (7,468 ) Total Deferred (12,150 ) 5,434 (10,690 ) Provision for Income Taxes $ 102,682 $ 72,158 $ 77,791 The significant components of deferred income tax assets and liabilities as of May 31, 2020 and 2019 were as follows: 2020 2019 (In thousands) Deferred income tax assets related to: Inventories $ 12,341 $ 8,970 Allowance for losses 4,294 7,524 Accrued compensation and benefits 14,686 14,364 Accrued other expenses 15,107 17,036 Other long-term liabilities 22,030 15,947 Credit and net operating and capital loss carryforwards 65,994 63,395 Net unrealized loss on securities 16,892 12,391 Pension and other postretirement benefits 76,147 42,991 Total Deferred Income Tax Assets 227,491 182,618 Less: valuation allowances (66,855 ) (55,274 ) Net Deferred Income Tax Assets 160,636 127,344 Deferred income tax (liabilities) related to: Depreciation (70,588 ) (72,387 ) Amortization of intangibles (109,926 ) (116,097 ) Unremitted foreign earnings (8,781 ) (18,795 ) Total Deferred Income Tax (Liabilities) (189,295 ) (207,279 ) Deferred Income Tax Assets (Liabilities), Net $ (28,659 ) $ (79,935 ) At May 31, 2020, we had U.S. capital loss carryforwards of approximately $47.0 million, of which $43.4 million will expire if not used by the end of our fiscal year 2022, with the balance expiring if unused by the end of our fiscal year 2025. Also, as of May 31, 2020, we had foreign tax credit carryforwards of $23.4 million, which expire through fiscal 2030. Additionally, as of May 31, 2020, we had approximately $6.1 million of tax benefits associated with state net operating loss carryforwards and state tax credit carryforwards, which expire at various dates beginning in fiscal 2021. Also, as of May 31, 2020, we had foreign net operating loss carryforwards of approximately $152.5 million, of which approximately $8.3 million will expire at various dates beginning in fiscal 2021 and approximately $144.2 million that have an indefinite carryforward period. Additionally, as of May 31, 2020, we had foreign capital loss carryforwards of approximately $29.0 million that can be carried forward indefinitely. When evaluating the realizability of deferred income tax assets, we consider, among other items, whether a jurisdiction has experienced cumulative pretax losses and whether a jurisdiction will generate the appropriate character of income to recognize a deferred income tax asset. More specifically, if a jurisdiction experiences cumulative pretax losses for a period of three years, including the current fiscal year, or if a jurisdiction does not have sufficient income of the appropriate character in the relevant carryback or projected carryforward periods, we generally conclude that it is more likely than not that the respective deferred tax asset will not be realized unless factors such as expected operational changes, availability of prudent and feasible tax planning strategies, reversal of taxable temporary differences or other information exists that would lead us to conclude otherwise. If, after we have evaluated these factors, the deferred income tax assets are not expected to be realized within the carryforward or carryback periods allowed for that jurisdiction, we would conclude that a valuation allowance is required. Total valuation allowances of approximately $66.9 million and $55.3 million have been recorded as of May 31, 2020 and 2019, respectively. These recorded valuation allowances relate primarily to U.S. capital losses, state net operating losses and certain foreign net operating losses, net foreign deferred tax assets and foreign tax credit carryforwards. The year-over-year increase in valuation allowances is primarily attributable to foreign tax credit carryforwards. The following table reconciles income tax expense (benefit) computed by applying the U.S. statutory federal income tax rate against income (loss) before income taxes to the provision (benefit) for income taxes: Year Ended May 31, 2020 2019 2018 (In thousands, except percentages) Income tax expense at the U.S. statutory federal income tax rate $ 85,630 $ 71,367 $ 121,812 Impact of foreign operations 3,433 (1,571 ) (16,276 ) State and local income taxes, net 11,651 7,224 9,520 Impact of GILTI provisions 3,051 5,772 Domestic manufacturing deduction - (4,839 ) Nondeductible business expense 2,005 2,259 2,473 Valuation allowance 14,008 7,021 (5,235 ) Deferred tax liability for unremitted foreign earnings (5,527 ) - (77,970 ) Changes in unrecognized tax benefits 1,292 (8,480 ) Other (3,351 ) 1,195 737 FY19 GILTI impact of issued regulations (4,348 ) Equity-based compensation (5,162 ) (4,496 ) (4,652 ) Transition tax liability (1,868 ) 67,899 Remeasurement of U.S. deferred income taxes (6,265 ) (15,678 ) Provision for Income Tax Expense $ 102,682 $ 72,158 $ 77,791 Effective Income Tax Rate 25.2 % 21.2 % 18.7 % Uncertain income tax positions are accounted for in accordance with ASC 740. The following table summarizes the activity related to unrecognized tax benefits: (In millions) 2020 2019 2018 Balance at June 1 $ 8.1 $ 14.1 $ 13.2 Additions based on tax positions related to current year - 0.1 5.1 Additions for tax positions of prior years 2.0 2.0 - Reductions for tax positions of prior years (0.9 ) (7.9 ) (4.5 ) Foreign currency translation (0.2 ) (0.2 ) 0.3 Balance at May 31 $ 9.0 $ 8.1 $ 14.1 The total amount of unrecognized tax benefits that would impact the effective tax rate, if recognized, was $8.6 million at May 31, 2020, $7.7 million at May 31, 2019 and $13.6 million at May 31, 2018. We recognize interest and penalties related to unrecognized tax benefits in income tax expense. At May 31, 2020, 2019 and 2018, the accrual for interest and penalties was $2.9 million, $3.0 million and $2.8 million, respectively. Unrecognized tax benefits, including interest and penalties, have been classified as other long-term liabilities unless expected to be paid in one year. We file income tax returns in the U.S. and in various state, local and foreign jurisdictions. The Internal Revenue Service has completed examinations of our 2015 and 2016 federal income tax returns which resulted in an inconsequential reduction to our 2015 federal income tax liability and no changes to our 2016 federal income tax liability. Although not currently under examination, the statutory audit period for our 2014 federal tax return remains open. Further, with limited exceptions, we are generally subject to state and local or non-U.S. income tax examinations by tax authorities for the fiscal years 2013 through 2019. We are currently under examination, or have been notified of an upcoming tax examination, for various non-U.S. and domestic state and local jurisdictions. Although it is possible that certain tax examinations could be resolved during the next 12 months, the timing and outcomes are uncertain. Our deferred tax liability for unremitted foreign earnings was adjusted to $18.8 million as of May 31, 2019. The $18.8 million deferred tax liability represented our estimate of the foreign tax cost associated with the remittance of $413.3 million of foreign earnings that were not considered to be permanently reinvested. As of May 31, 2020, the amount of these earnings has decreased to approximately $407.4 million and the related deferred tax liability, which represents the estimated tax cost to repatriate these earnings, was adjusted to $12.1 million. The reduction to the deferred tax liability is primarily due to the impact of foreign exchange and the elimination of withholding taxes on certain of our foreign earnings not considered permanently reinvested. We have not provided for U.S. income taxes or foreign withholding taxes on the remaining $905.1 million of foreign unremitted earnings because such earnings have been retained and reinvested by the foreign subsidiaries as of May 31, 2020. Accordingly, no provision has been made for U.S. income taxes or foreign withholding taxes, which may become payable if the remaining unremitted earnings of foreign subsidiaries were distributed to the U.S. Due to the uncertainties and complexities involved in the various options for repatriation of foreign earnings, it is not practical to calculate the deferred taxes associated with the remaining foreign earnings.

Stock Repurchase Program

Stock Repurchase Program	12 Months Ended
	May 31, 2020
Equity [Abstract]
Stock Repurchase Program	NOTE I — STOCK REPURCHASE PROGRAM On January 8, 2008, we announced our authorization of a stock repurchase program under which we may repurchase shares of RPM International Inc. common stock at management’s discretion. As announced on November 28, 2018, our goal is to return $1.0 billion in capital to stockholders by May 31, 2021 through share repurchases. On April 16, 2019, after taking into account share repurchases under our existing stock repurchase program to date, our Board of Directors authorized the repurchase of the remaining $600.0 million in value of RPM International Inc. common stock by May 31, 2021. As a result, we may repurchase shares from time to time in the open market or in private transactions at various times and in amounts and for prices that our management deems appropriate, subject to insider trading rules and other securities law restrictions. The timing of our purchases will depend upon prevailing market conditions, alternative uses of capital and other factors. We may limit or terminate the stock repurchase program at any time. During the fiscal year ended May 31, 2020, we repurchased 2,041,847 shares of our common stock at a cost of approximately $125.0 million, or an average cost of $61.22 per share, under this program. During the fiscal year ended May 31, 2019, we repurchased 3,286,907 shares of our common stock at a cost of approximately $200.2 million, or an average cost of $60.92 per share, under this program. During the fiscal year ended May 31, 2018, we did not repurchase any shares of our common stock under this program. Given recent macroeconomic uncertainty resulting from the Covid-19 pandemic, we have suspended our stock repurchase program.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	May 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	NOTE J — STOCK-BASED COMPENSATION Stock-based compensation represents the cost related to stock-based awards granted to our employees and directors; these awards include restricted stock, restricted stock units, performance stocks, performance stock units and SARs. We grant stock-based incentive awards to our employees and/or our directors under various share-based compensation plans. The plan that is active or provides for stock option grants or share-based payment awards is the Amended and Restated 2014 Omnibus Equity and Incentive Plan (the “2014 Omnibus Plan”), which includes provisions for grants of restricted stock, restricted stock units, performance stock, performance stock units and SARs. Other plans, which provide for restricted stock grants only, include the 2003 Restricted Stock Plan for Directors (the “2003 Plan”) and the 2007 Restricted Stock Plan (the “2007 Plan”). We measure stock-based compensation cost at the date of grant, based on the estimated fair value of the award. We recognize the cost as expense on a straight-line basis (net of estimated forfeitures) over the related vesting period. The following table represents total stock-based compensation expense included in our Consolidated Statements of Income: Year Ended May 31, 2020 2019 2018 (In thousands) Stock-based compensation expense, included in SG&A $ 19,789 $ 31,154 $ 25,440 Stock-based compensation expense, included in restructuring expense 116 4,283 2,136 Total stock-based compensation cost 19,905 35,437 27,576 Income tax (benefit) (2,784 ) (6,937 ) (7,178 ) Total stock-based compensation cost, net of tax $ 17,121 $ 28,500 $ 20,398 SARs SARs are awards that allow our employees to receive shares of our common stock at a fixed price. We grant SARs at an exercise price equal to the stock price on the date of the grant. The fair value of SARs granted is estimated as of the date of grant using a Black-Scholes option-pricing model. The Black-Scholes option-pricing model was developed for use in estimating the fair value of traded options that have no vesting restrictions and are fully transferable. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. The expected life of options granted is derived from the input of the option-pricing model and represents the period of time that options granted are expected to be outstanding. Expected volatility rates are based on historical volatility of shares of our common stock. The following is a summary of our weighted-average assumptions related to SARs grants made during the last three fiscal years: Year Ended May 31, 2020 2019 2018 Risk-free interest rate 1.9 % 2.9 % 2.2 % Expected life of option 6.5 yrs 6.5 yrs 7.0 yrs Expected dividend yield 2.3 % 2.1 % 2.2 % Expected volatility rate 22.4 % 25.2 % 26.2 % The 2014 Omnibus Plan was approved by our stockholders on October 9, 2014,and amendments to the 2014 Omnibus Plan were subsequently approved by our stockholders in 2018 and 2019. The 2014 Omnibus Plan provides us with the flexibility to grant a wide variety of stock and stock-based awards, as well as dollar-denominated performance-based awards, and is intended to be the primary stock-based award program for covered employees. A wide variety of stock and stock-based awards, as well as dollar-denominated performance-based awards, may be granted under these plans. SARs are issued at fair value at the date of grant, have up to ten-year The following table summarizes option and share-based payment activity (including SARs) under these plans during the fiscal year ended May 31, 2020: 2020 Share-Based Payments Weighted Average Exercise Price Number of Shares Under Option (Shares in thousands) Balance at June 1, 2019 $ 46.44 3,097 Options granted 62.17 340 Options exercised 43.10 (955 ) Balance at May 31, 2020 49.88 2,482 Exercisable at May 31, 2020 $ 44.15 1,520 SARs 2020 2019 2018 (In millions, except per share amounts) Weighted-average grant-date fair value per SAR $ 11.59 $ 14.08 $ 12.90 Intrinsic value of options exercised $ 9.62 $ 9.29 $ 11.10 Tax benefit from options exercised $ 5.94 $ 3.21 $ 3.40 Fair value of SARS vested $ 12.27 $ 9.30 $ 6.50 At May 31, 2020, the aggregate intrinsic value and weighted-average remaining contractual life of options outstanding was $61.8 million and 6.11 years, respectively, while the aggregate intrinsic value and weighted-average remaining contractual life of options exercisable was $46.6 million and 4.85 years, respectively. At May 31, 2020, the total unamortized stock-based compensation expense related to SARs that were previously granted was $7.9 million, which is expected to be recognized over 2.30 years. We anticipate that approximately 2.5 million shares at a weighted-average exercise price of $49.86 and a weighted-average remaining contractual term of 6.1 years will ultimately vest under these plans. Restricted Stock Plans We also grant stock-based awards, which may be made in the form of restricted stock, restricted stock units, performance stock and performance stock units. These awards are granted to eligible employees or directors, and entitle the holder to shares of our common stock as the award vests. The fair value of the awards is determined and fixed based on the stock price at the date of grant. A description of our restricted stock plans follows. Under the 2014 Omnibus Plan, a total of 6,000,000 shares of our common stock may be subject to awards. Of those issuable shares, up to 3,000,000 shares of common stock may be subject to “full-value” awards. In October 2019, shareholders approved an amendment to the 2014 Omnibus Plan making an additional 5,000,000 shares of common stock subject to awards. After approval, 6,100,427 shares were available for new awards. Of those additional issuable shares, 2,250,000 shares may be subject to “full-value” awards similar to those issued under the 2014 Omnibus Plan. The following table summarizes the share-based performance-earned restricted stock (“PERS”) and performance stock units (“PSUs”) activity during the fiscal year ended May 31, 2020: Weighted-Average Grant-Date Fair Value 2020 (Shares in thousands) Balance at June 1, 2019 $ 54.90 829 Shares granted 63.52 405 Shares forfeited 55.80 (8 ) Shares vested 51.11 (361 ) Balance at May 31, 2020 $ 60.51 865 The weighted-average grant-date fair value was $63.52, $60.36 and $52.26 for the fiscal years ended May 31, 2020, 2019 and 2018, respectively. The restricted stock and performance stock cliff vest after three years. Nonvested restricted shares of common stock under the 2014 Omnibus Plan are eligible for dividend payments, while performance stock units are not eligible for dividend payments. At May 31, 2020, remaining unamortized deferred compensation expense for performance-earned restricted stock totaled $15.8 million. The remaining amount is being amortized over the applicable vesting period for each participant. On October 3, 2018, our Compensation Committee granted in the aggregate 192,000 Performance Stock Units (the “2018 PSUs”) to certain executives at a weighted-average grant-date price of $60.50 per PSU. The awards are contingent upon the level of attainment of performance goals for the three-year On July 18, 2019, our Compensation Committee granted in the aggregate 178,000 Performance Stock Units (the “2019 PSUs”) to certain executives at a weighted-average grant-date price of $62.17 per PSU. The awards are contingent upon the level of attainment of performance goals for the three-year The 2003 Plan was approved on October 10, 2003 by our stockholders, and was established primarily for the purpose of recruiting and retaining directors, and to align the interests of directors with the interests of our stockholders. Only directors who are not our employees are eligible to participate. Under the 2003 Plan, up to 500,000 shares of our common stock may be awarded, with awards cliff vesting over a three-year Weighted-Average Grant-Date Fair Value 2020 (Shares in thousands) Balance at June 1, 2019 $ 54.56 55 Shares granted to directors 67.26 23 Shares vested 50.61 (16 ) Balance at May 31, 2020 $ 60.25 62 The weighted-average grant-date fair value was $67.26, $60.50 and $51.63 for the fiscal years ended May 31, 2020, 2019 and 2018, respectively. Unamortized deferred compensation expense relating to restricted stock grants for directors of $1.9 million at May 31, 2020, is being amortized over the applicable remaining vesting period for each director. Nonvested restricted shares of common stock under the 2003 Plan are eligible for dividend payments. As of May 31, 2020, there were 7,200 shares available for future grant. When shares in the 2003 Plan are exhausted in fiscal year 2021, Director rewards will be issued from the 2014 Omnibus Plan on the go forward basis. During fiscal 2020, a total of 30,185 shares were awarded under the 2014 Omnibus Plan to certain employees as supplemental retirement benefits, generally subject to forfeiture. The shares vest upon the latter of attainment of age 55 and the fifth anniversary of the May 31 st Weighted-Average Grant-Date Fair Value 2020 (Shares in thousands) Balance at June 1, 2019 $ 31.73 432 Shares granted 62.17 30 Shares forfeited - - Shares exercised 33.96 (16 ) Balance at May 31, 2020 $ 33.82 446 The weighted-average grant-date fair value was $62.17, $60.01 and $55.19 for the fiscal years ended May 31, 2020, 2019 and 2018, respectively. As of May 31, 2020, no shares remain available for future grant under the 2007 Plan, and future issuances of shares as supplemental retirement benefits are made under the 2014 Omnibus Plan. At May 31, 2020, unamortized stock-based compensation expense of $0.6 million and $3.5 million relating to the 2007 Plan and the 2014 Omnibus Plan, respectively, are being amortized over the applicable vesting period associated with each participant. The following table summarizes the activity for all nonvested restricted shares during the year ended May 31, 2020: Weighted-Average Grant-Date Fair Number of (Shares in thousands) Value Shares Balance at June 1, 2019 $ 52.35 1,091 Granted 63.62 458 Vested 49.42 (421 ) Forfeited 55.80 (8 ) Balance at May 31, 2020 $ 58.03 1,120 The remaining weighted-average contractual term of nonvested restricted shares at May 31, 2020 is the same as the period over which the remaining cost of the awards will be recognized, which is approximately 2.18 years. The fair value of the nonvested restricted share awards have been calculated using the market value of the shares on the date of issuance. For the years ended May 31, 2020, 2019 and 2018, the weighted-average grant-date fair value for restricted share grants was $63.62, $60.34 and $52.62, respectively. The total fair value of shares that vested during the years ended May 31, 2020, 2019 and 2018 was $20.8 million, $37.8 million and $29.9 million, respectively. We anticipate that approximately 1.12 million shares at a weighted-average grant-date fair value of $58.03 and a weighted-average remaining contractual term of 2.18 years will ultimately vest, based upon the unique terms and participants of each plan. Approximately 420,571 shares of restricted stock were vested during the year ended May 31, 2020, with 832,717 restricted shares vested during the year ended May 31, 2019. The total intrinsic value of restricted shares converted during the years ended May 31, 2020, 2019 and 2018 was $26.8 million, $58.1 million and $7.6 million, respectively. Total unrecognized compensation cost related to all nonvested awards of restricted shares of common stock was $25.7 million as of May 31, 2020. That cost is expected to be recognized over a weighted-average period of 2.18 years. We did not receive any cash from employees as a result of employee vesting and release of restricted shares for the year ended May 31, 2020.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	May 31, 2020
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	NOTE K — ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Accumulated other comprehensive income (loss) consists of the following components: Pension And Other Postretirement Unrealized Unrealized Foreign Benefit Gain Gain (Loss) Currency Liability (Loss) On On Translation Adjustments, Derivatives, Securities, (In thousands) Adjustments Net of Tax Net of Tax Net of Tax Total Balance at June 1, 2017 $ (308,415 ) $ (166,724 ) $ 16 $ 1,137 $ (473,986 ) Reclassification adjustments for gains included in net income, net of taxes of $591 - (1,244 ) (1,244 ) Other comprehensive income 10,989 11,375 (359 ) (2,050 ) 19,955 Deferred taxes (2,587 ) (2,146 ) 212 748 (3,773 ) Balance at May 31, 2018 (300,013 ) (157,495 ) (131 ) (1,409 ) (459,048 ) Reclassification adjustments for gains included in net income, net of taxes of $151 1,777 1,777 Other comprehensive income (73,660 ) (70,785 ) 4,713 307 (139,425 ) Deferred taxes 3,178 16,635 (203 ) (542 ) 19,068 Balance at May 31, 2019 (370,495 ) (211,645 ) 4,379 133 (577,628 ) Reclassification adjustments for losses included in net income, net of taxes of $0 - - Other comprehensive income (71,820 ) (86,347 ) (6,315 ) 1,210 (163,272 ) Deferred taxes 1,583 20,275 1,865 (320 ) 23,403 Balance at May 31, 2020 $ (440,732 ) $ (277,717 ) $ (71 ) $ 1,023 $ (717,497 )

Earnings Per Share

Earnings Per Share	12 Months Ended
	May 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share	NOTE L — EARNINGS PER SHARE The following table sets forth the reconciliation of the numerator and denominator of basic and diluted earnings per share for the years ended May 31, 2020, 2019 and 2018: Year Ended May 31, 2020 2019 2018 (In thousands, except per share amounts) Numerator for earnings per share: Net income attributable to RPM International Inc. stockholders $ 304,385 $ 266,558 $ 337,770 Less: Allocation of earnings and dividends to participating securities (1,956 ) (1,514 ) (3,858 ) Net income available to common shareholders - basic 302,429 265,044 333,912 Reverse: Allocation of earnings and dividends to participating securities 1,956 1,514 3,858 Add: Income effect of contingently issuable shares - 3,655 5,673 Net income available to common shareholders - diluted $ 304,385 $ 270,213 $ 343,443 Denominator for basic and diluted earnings per share: Basic weighted average common shares 128,468 130,552 131,179 Average diluted options 1,506 1,838 2,064 Net issuable common share equivalents (1) - 1,943 3,928 Total shares for diluted earnings per share (2) 129,974 134,333 137,171 Earnings Per Share of Common Stock Attributable to RPM International Inc. Stockholders: Basic Earnings Per Share of Common Stock $ 2.35 $ 2.03 $ 2.55 Method used to calculate basic earnings per share Two-Class Two-Class Two-Class Diluted Earnings Per Share of Common Stock $ 2.34 $ 2.01 $ 2.50 Method used to calculate diluted earnings per share Treasury Treasury Treasury (1) Represents the number of shares that would be issued if our contingently convertible notes had been converted. We included these shares in the calculation of diluted EPS as the conversion of the notes were eligible to be settled, at our election, in cash, shares of our common stock, or a combination of cash and shares of our common stock. On November 27, 2018, we redeemed all of our 2.25% convertible senior notes due 2020, primarily for cash, but also issued 598,601 shares of our common stock in the transaction (2) For the years ended May 31, 2020, 2019 and 2018, approximately 340,000, 862,500 and 799,362 shares of stock, respectively, granted under stock-based compensation plans were excluded from the calculation of diluted EPS, as the effect would have been anti-dilutive.

Leases

Leases	12 Months Ended
	May 31, 2020
Leases [Abstract]
Leases	NOTE M — LEASES We have leases for manufacturing facilities, warehouses, office facilities, equipment, and vehicles, which are primarily classified and accounted for as operating leases. We have a small portfolio of finance leases, which are not material to our Consolidated Financial Statements. Some leases include one or more options to renew, generally at our sole discretion, with renewal terms that can extend the lease term from one to five years or more. In addition, certain leases contain termination options, where the rights to terminate are held by either us, the lessor, or both parties. These options to extend or terminate a lease are included in the lease terms when it is reasonably certain that we will exercise that option. We have made an accounting policy election not to recognize ROU assets and lease liabilities for leases with a term of twelve months or less, with no purchase option that we are reasonably certain to exercise. ROU assets and lease liabilities are recognized based on the present value of the fixed and in-substance fixed lease payments over the lease term at the commencement date. The ROU assets also include any initial direct costs incurred and lease payments made at or before the commencement date and are reduced by lease incentives. We use our incremental borrowing rate as the discount rate to determine the present value of the lease payments for leases, as our leases do not have readily determinable implicit discount rates. Our incremental borrowing rate is the rate of interest that we would have to borrow on a collateralized basis over a similar term and amount in a similar economic environment. We determine the incremental borrowing rates for our leases by adjusting the local risk-free interest rate with a credit risk premium corresponding to our credit rating. Operating lease cost is recognized on a straigh t-line basis over the lease term. Finance lease cost is recognized as a combination of the amortization expense for the ROU assets and interest expense for the outstanding lease liabilities using the discount rate discussed above. The depreciable life of assets and leasehold improvements are limited by the expected lease term, unless there is a transfer of title or purchase option reasonably certain of exercise. Certain vendors have the right to declare that we are in default of our agreements if any such vendor, including the lessors under its vehicle leases, determines that a change in our financial condition poses a substantially increased credit risk. Our lease agreements do not contain any significant residual value guarantees or material restrictive covenants. Income from subleases was not significant for any period presented. During the fiscal year ended May 31, 2020, we incurred lease costs of $84.2 million, which is primarily comprised of operating lease costs of $73.7 million and other costs of $10.5 million, which include costs for our finance leases, short-term leases and variable lease payments. Total rental expense for all operating leases amounted to $64.9 million and $64.3 million for the fiscal years ended May 31, 2019 and 2018, respectively. For fiscal year ended May 31, 2020, we paid approximately $69.4 million for operating lease obligations. These payments are included in operating cash flows. In addition, during the fiscal 2020, we recognized ROU assets for $61.6 million in exchange for operating lease obligations. At May 31, 2020, the weighted-average remaining lease term under our operating leases was 9.1 years, while the weighted-average discount rate for our operating leases was approximately 3.7%. The following represents our future undiscounted cash flows for each of the next five years and thereafter and reconciliation to the lease liabilities, as of May 31, 2020: (In thousands) Year ending May 31, Operating Leases 2021 $ 61,328 2022 50,452 2023 38,921 2024 31,572 2025 27,771 Thereafter 144,982 Total lease payments $ 355,026 Less imputed interest 57,746 Total present value of lease liabilities $ 297,280 As of May 31, 2020, our current lease liability balance was $52.6 million and recorded within Other Accrued Liabilities on our Consolidated Balance Sheet. Following is a summary of our future minimum lease commitments, as determined under ASC 840, for all non-cancelable lease agreements, for each of the next five years and in the aggregate, as of May 31, 2019: May 31, (In thousands) 2020 $ 59,163 2021 49,731 2022 40,339 2023 32,798 2024 27,716 Thereafter 119,607 Total Minimum Lease Commitments $ 329,354

Pension Plans

Pension Plans	12 Months Ended
	May 31, 2020
Compensation And Retirement Disclosure [Abstract]
Pension Plans	NOTE N — PENSION PLANS We sponsor several pension plans for our employees, including our principal plan (the “Retirement Plan”), which is a non-contributory defined benefit pension plan covering substantially all domestic non-union employees. Pension benefits are provided for certain domestic union employees through separate plans. Employees of our foreign subsidiaries receive pension coverage, to the extent deemed appropriate, through plans that are governed by local statutory requirements. The Retirement Plan provides benefits that are based upon years of service and average compensation with accrued benefits vesting after five years. Benefits for union employees are generally based upon years of service, or a combination of years of service and average compensation. Our pension funding policy considers contributions in an amount on an annual basis that can be deducted for federal income tax purposes, using a different actuarial cost method and different assumptions from those used for financial reporting. For the fiscal year ending May 31, 2021, we are required to contribute approximately $8,000 to the retirement plans in the U.S. and approximately $6.7 million to our foreign plans. During the year, the company will evaluate whether to make additional contributions. During February 2020, we contributed an additional $51.5 million to the RPM International Inc. Retirement Plan in the U.S. than what had been planned at the beginning of the fiscal year. Net periodic pension cost consisted of the following for the year ended May 31: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2018 2020 2019 2018 Service cost $ 39,425 $ 37,528 $ 37,859 $ 5,400 $ 4,693 $ 4,620 Interest cost 20,415 21,987 17,518 4,842 5,420 5,025 Expected return on plan assets (34,291 ) (33,867 ) (32,342 ) (7,118 ) (7,907 ) (8,270 ) Amortization of: Prior service cost 9 118 117 (36 ) (30 ) (31 ) Net actuarial losses recognized 18,516 13,087 14,470 2,029 1,229 1,758 Curtailment/settlement losses - - - 86 89 128 Net Pension Cost $ 44,074 $ 38,853 $ 37,622 $ 5,203 $ 3,494 $ 3,230 The changes in benefit obligations and plan assets, as well as the funded status of our pension plans at May 31, 2020 and 2019, were as follows: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Benefit obligation at beginning of year $ 660,277 $ 617,255 $ 205,967 $ 194,149 Service cost 39,425 37,528 5,400 4,693 Interest cost 20,415 21,987 4,842 5,420 Benefits paid (41,186 ) (45,917 ) (6,269 ) (7,488 ) Participant contributions - - 1,106 1,003 Plan amendments - 11 (893 ) (33 ) Plan combination - - 922 - Plan settlements/curtailments - - (288 ) (607 ) Actuarial losses 83,808 29,413 2,718 17,286 Premiums paid - - (99 ) (97 ) Currency exchange rate changes - - (3,128 ) (8,359 ) Benefit Obligation at End of Year $ 762,739 $ 660,277 $ 210,278 $ 205,967 Fair value of plan assets at beginning of year $ 496,865 $ 487,233 $ 187,112 $ 188,960 Actual return on plan assets 8,689 (2,272 ) 9,899 6,737 Employer contributions 52,182 57,821 6,331 6,770 Participant contributions - - 1,106 1,003 Benefits paid (41,186 ) (45,917 ) (6,269 ) (7,488 ) Plan combination - - 182 - Premiums paid - - (99 ) (97 ) Plan settlements/curtailments - - (281 ) (580 ) Currency exchange rate changes - - (3,107 ) (8,193 ) Fair Value of Plan Assets at End of Year $ 516,550 $ 496,865 $ 194,874 $ 187,112 (Deficit) of plan assets versus benefit obligations at end of year $ (246,189 ) $ (163,412 ) $ (15,404 ) $ (18,855 ) Net Amount Recognized $ (246,189 ) $ (163,412 ) $ (15,404 ) $ (18,855 ) Accumulated Benefit Obligation $ 662,197 $ 553,392 $ 197,167 $ 192,533 The fair value of the assets held by our pension plans has increased at May 31, 2020 since our previous measurement date at May 31, 2019, due to our plan contributions and market returns. Total plan liabilities have increased due to increased benefit accruals and a decrease in the discount rate used to value the liability. We have increased our recorded liability for the net underfunded status of our pension plans. Due to lower discount rates, we expect pension expense in fiscal 2021 to be higher when compared to our fiscal 2020 expense level. Any future declines in the value of our pension plan assets or increases in our plan liabilities could require us to increase our recorded liability for the net underfunded status of our pension plans and could also require accelerated and higher cash contributions to our pension plans. Amounts recognized in the Consolidated Balance Sheets for the years ended May 31, 2020 and 2019 are as follows: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Noncurrent assets $ - $ - $ 13,395 $ 9,047 Current liabilities (8 ) (8 ) (547 ) (435 ) Noncurrent liabilities (246,181 ) (163,404 ) (28,252 ) (27,467 ) Net Amount Recognized $ (246,189 ) $ (163,412 ) $ (15,404 ) $ (18,855 ) The following table summarizes the relationship between our plans' benefit obligations and assets: U.S. Plans 2020 2019 (In thousands) Benefit Obligation Plan Assets Benefit Obligation Plan Assets Plans with projected benefit obligations in excess of plan assets $ 762,739 $ 516,550 $ 660,277 $ 496,865 Plans with accumulated benefit obligations in excess of plan assets 662,197 516,550 553,392 496,865 Plans with assets in excess of projected benefit obligations - - - - Plans with assets in excess of accumulated benefit obligations - - - - Non-U.S. Plans 2020 2019 (In thousands) Benefit Obligation Plan Assets Benefit Obligation Plan Assets Plans with projected benefit obligations in excess of plan assets $ 163,589 $ 134,791 $ 162,824 $ 134,921 Plans with accumulated benefit obligations in excess of plan assets 150,478 134,598 149,390 134,921 Plans with assets in excess of projected benefit obligations 46,689 60,083 43,143 52,191 Plans with assets in excess of accumulated benefit obligations 46,689 60,276 43,143 52,191 The following table presents the pretax net actuarial loss and prior service (costs) recognized in accumulated other comprehensive income (loss) not affecting retained earnings: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Net actuarial loss $ (341,179 ) $ (250,286 ) $ (48,090 ) $ (51,184 ) Prior service (costs) credits (20 ) (28 ) 1,098 224 Total recognized in accumulated other comprehensive income not affecting retained earnings $ (341,199 ) $ (250,314 ) $ (46,992 ) $ (50,960 ) The following table includes the changes recognized in other comprehensive income: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Changes in plan assets and benefit obligations recognized in other comprehensive income: Prior service cost $ - $ 11 $ (893 ) $ (33 ) Net loss (gain) arising during the year 109,409 65,552 (70 ) 18,456 Effect of exchange rates on amounts included in AOCI - - (922 ) (1,593 ) Amounts recognized as a component of net periodic benefit cost: Amortization or curtailment recognition of prior service (cost) benefit (9 ) (118 ) 36 30 Amortization or settlement recognition of net (loss) (18,516 ) (13,087 ) (2,115 ) (1,345 ) Total recognized in other comprehensive loss (income) $ 90,884 $ 52,358 $ (3,964 ) $ 15,515 The following table presents the amounts in accumulated other comprehensive income (loss) as of May 31, 2020 that have not yet been recognized in net periodic pension cost, but are expected to be recognized in our Consolidated Statements of Income during the fiscal year ending May 31, 2021: (In thousands) U.S. Plans Non-U.S. Plans Net actuarial loss $ (27,457 ) $ (2,106 ) Prior service (cost) credit $ (8 ) $ 141 In measuring the projected benefit obligation and net periodic pension cost for our plans, we utilize actuarial valuations. These valuations include specific information pertaining to individual plan participants, such as salary, age and years of service, along with certain assumpti ons. The most significant assumptions applied include discount rates, expected return on plan assets and rate of compensation increases. We evaluate these assumptions, at a minimum, on an annual basis, and make required changes, as applicable. In developin g our expected long-term rate of return on pension plan assets, we consider the current and expected target asset allocations of the pension portfolio, as well as historical returns and future expectations for returns on various categories of plan assets. Expected return on assets is determined by using the weighted-average return on asset classes based on expected return for the target asset allocations of the principal asset categories held by each plan. In determining expected return, we consider both hi storical performance and an estimate of future long-term rates of return. Actual experience is used to develop the assumption for compensation increases. The following weighted-average assumptions were used to determine our year-end benefit obligations and net periodic pension cost under the plans: U.S. Plans Non-U.S. Plans Year-End Benefit Obligations 2020 2019 2020 2019 Discount rate 2.77 % 3.64 % 2.49 % 2.61 % Rate of compensation increase 3.19 % 3.80 % 2.86 % 2.86 % U.S. Plans Non-U.S. Plans Net Periodic Pension Cost 2020 2019 2018 2020 2019 2018 Discount rate 3.65 % 4.12 % 3.81 % 2.61 % 3.09 % 2.79 % Expected return on plan assets 7.40 % 7.40 % 7.89 % 3.91 % 4.30 % 4.37 % Rate of compensation increase 3.80 % 3.80 % 3.80 % 2.86 % 2.85 % 3.00 % The following tables illustrate the weighted-average actual and target allocation of plan assets: U.S. Plans Target Allocation Actual Asset Allocation (Dollars in millions) as of May 31, 2020 2020 2019 Equity securities 55 % $ 261.0 $ 295.1 Fixed income securities 25 % 106.4 83.8 Multi-class 20 % 118.2 78.1 Cash (1) 30.8 39.7 Other 0.2 0.2 Total assets 100 % $ 516.6 $ 496.9 Non-U.S. Plans Target Allocation Actual Asset Allocation (Dollars in millions) as of May 31, 2020 2020 2019 Equity securities 33 % $ 79.3 $ 79.9 Fixed income securities 48 % 88.2 79.3 Cash 0.1 0.1 Property and other 19 % 27.3 27.8 Total assets 100 % $ 194.9 $ 187.1 (1) The larger than target cash position at May 31, 2020 results from our February 2020 contribution to the RPM International Inc. Retirement Plan because of our plans to invest the February contribution over a period of time, due to dollar cost averaging. The following tables present our pension plan assets as categorized using the fair value hierarchy at May 31, 2020 and 2019: U.S. Plans (In thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value at May 31, 2020 U.S. Treasury and other government $ - $ 12,973 $ - $ 12,973 State and municipal bonds - 508 - 508 Foreign bonds - 715 - 715 Mortgage-backed securities - 23,824 - 23,824 Corporate bonds - 34,317 - 34,317 Stocks - large cap 19,589 - - 19,589 Mutual funds - equity - 241,426 - 241,426 Mutual funds - multi-class - 118,205 - 118,205 Mutual funds - fixed - 33,993 - 33,993 Cash and cash equivalents 30,830 - - 30,830 Limited partnerships - - 170 170 Total $ 50,419 $ 465,961 $ 170 $ 516,550 Non-U.S. Plans (In thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value at May 31, 2020 Pooled equities $ - $ 78,472 $ - $ 78,472 Pooled fixed income - 87,610 - 87,610 Foreign bonds - 603 - 603 Insurance contracts - - 27,267 27,267 Mutual funds - 855 - 855 Cash and cash equivalents 67 - - 67 Total $ 67 $ 167,540 $ 27,267 $ 194,874 U.S. Plans (In thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value at May 31, 2019 U.S. Treasury and other government $ - $ 13,854 $ - $ 13,854 State and municipal bonds - 386 - 386 Foreign bonds - 1,031 - 1,031 Mortgage-backed securities - 20,075 - 20,075 Corporate bonds - 26,204 - 26,204 Stocks - mid cap 13,392 - - 13,392 Stocks - small cap 15,720 - - 15,720 Mutual funds - equity - 265,969 - 265,969 Mutual funds - multi-class - 78,143 - 78,143 Mutual funds - fixed - 22,215 - 22,215 Cash and cash equivalents 39,704 - - 39,704 Limited partnerships - - 172 172 Total $ 68,816 $ 427,877 $ 172 $ 496,865 Non-U.S. Plans (In thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value at May 31, 2019 Pooled equities $ - $ 78,733 $ - $ 78,733 Pooled fixed income - 79,061 - 79,061 Foreign bonds - 227 - 227 Insurance contracts - - 27,843 27,843 Mutual funds - 1,125 - 1,125 Cash and cash equivalents 123 - - 123 Total $ 123 $ 159,146 $ 27,843 $ 187,112 The following table includes the activity that occurred during the years ended May 31, 2020 and 2019 for our Level 3 assets: Actual Return on Plan Assets For: Balance at Assets Still Held Assets Sold Purchases, Sales and Balance at (In thousands) Beginning of Period at Reporting Date During Year Settlements, net (1) End of Period Year ended May 31, 2020 $ 28,015 (691 ) - 113 $ 27,437 Year ended May 31, 2019 28,448 1,228 - (1,661 ) 28,015 (1) Includes the impact of exchange rate changes during the year. The primary objective for the investments of the Retirement Plan is to provide for long-term growth of capital without undue exposure to risk. This objective is accomplished by utilizing a strategy of equities, fixed-income securities and cash equivalents in a mix that is conducive to participation in a rising market, while allowing for adequate protection in a falling market. Our Investment Committee oversees the investment allocation process, which includes the selection and evaluation of investment managers, the determination of investment objectives and risk guidelines, and the monitoring of actual investment performance. In order to manage investment risk properly, Plan policy prohibits short selling, securities lending, financial futures, options and other specialized investments, except for certain alternative investments specifically approved by the Investment Committee. The Investment Committee reviews, on a quarterly basis, reports of actual Plan investment performance provided by independent third parties, in addition to its review of the Plan investment policy on an annual basis. The investment objectives are similar for our plans outside of the U.S., subject to local regulations. The goals of the investment strategy for pension assets include: the total return of the funds shall, over an extended period of time, surpass an index composed of the MSCI World Stock Index (equity), the Barclays Aggregate Bond Index (fixed income), and 30-day Treasury Bills (cash), weighted appropriately to match the asset allocation of the plans. The equity portion of the funds shall surpass the MSCI World Stock Index over a full market cycle, while the fixed-income portion shall surpass Barclays Aggregate Bond Index over a full market cycle. The purpose of the core fixed-income fund is to increase return in the form of cash flow, provide a hedge against inflation and to reduce the volatility of the fund overall. Therefore, the primary objective of the core fixed-income portion is to match the Barclays Aggregate Bond Index. The purpose of including opportunistic fixed-income assets such as, but not limited to, global and high-yield securities in the portfolio is to enhance the overall risk-return characteristics of the Fund. In addition to the defined benefit pension plans discussed above, we also sponsor employee savings plans under Section 401(k) of the Internal Revenue Code, which cover most of our employees in the U.S. We record expense for defined contribution plans for any employer-matching contributions made in conjunction with services rendered by employees. The majority of our plans provide for matching contributions made in conjunction with services rendered by employees. Matching contributions are invested in the same manner that the participants invest their own contributions. Matching contributions charged to income were $21.1 million, $19.4 million and $18.7 million for the years ending May 31, 2020, 2019 and 2018, respectively. We expect to pay the following estimated pension benefit payments in the next five years (in millions): $71.0 in 2021, $71.0 in 2022, $70.6 in 2023, $70.1 in 2024 and $67.3 in 2025. In the five years thereafter (2026-2030), we expect to pay $339.2 million.

Postretirement Benefits

Postretirement Benefits	12 Months Ended
	May 31, 2020
Postemployment Benefits [Abstract]
Postretirement Benefits	NOTE O — POSTRETIREMENT BENEFITS We sponsor several unfunded-healthcare-benefit plans for certain of our retired employees, as well as postretirement life insurance for certain key former employees. Eligibility for these benefits is based upon various requirements. The following table illustrates the effect on operations of these plans for the three years ended May 31, 2020: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2018 2020 2019 2018 Service cost - benefits earned during the period $ - $ - $ - $ 1,661 $ 1,507 $ 1,307 Interest cost on the accumulated obligation 149 192 173 1,089 1,122 939 Amortization of: Prior service (credit) (219 ) (219 ) (220 ) - - - Net actuarial (gains) losses (66 ) (26 ) 24 611 442 332 Net Postretirement Benefit (Income) Cost $ (136 ) $ (53 ) $ (23 ) $ 3,361 $ 3,071 $ 2,578 The changes in benefit obligations of the plans at May 31, 2020 and 2019 were as follows: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Accumulated postretirement benefit obligation at beginning of year $ 4,990 $ 5,368 $ 37,663 $ 33,281 Service cost - - 1,661 1,507 Interest cost 149 192 1,089 1,122 Benefit payments (1,659 ) (287 ) (639 ) (664 ) Actuarial (gains) losses 702 (283 ) (683 ) 3,801 Currency exchange rate changes - - (702 ) (1,384 ) Accumulated and accrued postretirement benefit obligation at end of year $ 4,182 $ 4,990 $ 38,389 $ 37,663 In determining the postretirement benefit amounts outlined above, measurement dates as of May 31 for each period were applied. Amounts recognized in the Consolidated Balance Sheets for the years ended May 31, 2020 and 2019 are as follows: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Current liabilities $ (385 ) $ (423 ) $ (805 ) $ (741 ) Noncurrent liabilities (3,797 ) (4,567 ) (37,584 ) (36,922 ) Net Amount Recognized $ (4,182 ) $ (4,990 ) $ (38,389 ) $ (37,663 ) The following table presents the pretax net actuarial gain (loss) and prior service credits recognized in accumulated other comprehensive income (loss) not affecting retained earnings: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Net actuarial gain (loss) $ (386 ) $ 381 $ (11,331 ) $ (12,891 ) Prior service credits 448 667 - - Total recognized in accumulated other comprehensive income not affecting retained earnings $ 62 $ 1,048 $ (11,331 ) $ (12,891 ) The following table includes the changes recognized in other comprehensive income: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Changes in plan assets and benefit obligations recognized in other comprehensive income: Prior service cost $ - $ - $ - $ - Net loss (gain) arising during the year 702 (283 ) (683 ) 3,801 Effect of exchange rates on amounts included in AOCI - - (266 ) (419 ) Amounts recognized as a component of net periodic benefit cost: Amortization or curtailment recognition of prior service credit 219 219 - - Amortization or settlement recognition of net gain (loss) 66 26 (611 ) (442 ) Total recognized in other comprehensive loss (income) $ 987 $ (38 ) $ (1,560 ) $ 2,940 The following weighted-average assumptions were used to determine our year-end benefit obligations and net periodic postretirement benefit costs under the plans: U.S. Plans Non-U.S. Plans Year-End Benefit Obligations 2020 2019 2020 2019 Discount rate 2.44 % 3.44 % 3.32 % 3.22 % Current healthcare cost trend rate 6.68 % 7.29 % 5.73 % 5.77 % Ultimate healthcare cost trend rate 4.36 % 4.36 % 3.70 % 3.70 % Year ultimate healthcare cost trend rate will be realized 2037 2037 2040 2040 U.S. Plans Non-U.S. Plans Net Periodic Postretirement Cost 2020 2019 2018 2020 2019 2018 Discount rate 3.44 % 4.03 % 3.61 % 3.22 % 3.70 % 3.61 % Healthcare cost trend rate 7.29 % 7.86 % 14.75 % 5.77 % 6.02 % 5.85 % Ultimate healthcare cost trend rate 4.36 % 4.36 % 4.36 % 3.70 % 4.20 % 4.20 % Year ultimate healthcare cost trend rate will be realized 2037 2037 2037 2040 2032 2030 We utilize a sensitivity analysis to measure the potential impact of changes in our healthcare cost trend rate on our Consolidated Financial Statements. Increasing or decreasing current healthcare cost trend rates by 1% would affect our accumulated postretirement benefit obligation and net postretirement expense by the following amounts for the years ended May 31, 2020 and 2019: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 1% Increase in Healthcare Cost Trend Rate Accumulated benefit obligation $ 130 $ 124 $ 7,452 $ 8,300 Postretirement cost 4 7 814 731 1% Decrease in Healthcare Cost Trend Rate Accumulated benefit obligation $ (117 ) $ (112 ) $ (5,843 ) $ (6,390 ) Postretirement cost (3 ) (6 ) (595 ) (539 ) We expect to pay approximately $1.2 million to $1.5 million in estimated postretirement benefits in each of the next five years. In the five years thereafter (2026-2030), we expect to pay a cumulative total of $8.9 million.

Contingencies and Other Accrued

Contingencies and Other Accrued Losses	12 Months Ended
	May 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Contingencies and Other Accrued Losses	NOTE P — CONTINGENCIES AND OTHER ACCRUED LOSSES Accrued loss reserves consist of the following: May 31, 2020 2019 (In thousands) Accrued product liability reserves $ 10,458 $ 11,739 Accrued warranty reserves 7,593 7,013 Accrued environmental reserves 1,970 1,147 Total Accrued Loss Reserves - Current $ 20,021 $ 19,899 Accrued product liability reserves - noncurrent $ 27,016 $ 29,942 Accrued warranty liability - noncurrent 3,513 3,401 Accrued environmental reserves - noncurrent 4,125 4,211 Total Accrued Loss Reserves - Noncurrent $ 34,654 $ 37,554 Product Liability Matters We provide, through our wholly owned insurance subsidiaries, certain insurance coverage, primarily product liability coverage, to our other subsidiaries. Excess coverage is provided by third-party insurers. Our product liability accruals provide for these potential losses, as well as other uninsured claims. Product liability accruals are established based upon actuarial calculations of potential liability using industry experience, actual historical experience and actuarial assumptions developed for similar types of product liability claims, including development factors and lag times. To the extent there is a reasonable possibility that potential losses could exceed the amounts already accrued, we believe that the amount of any such additional loss would be immaterial to our results of operations, liquidity and consolidated financial position. Warranty Matters We also offer warranties on many of our products, as well as long-term warranty programs at certain of our businesses, and have established product warranty liabilities. We review these liabilities for adequacy on a quarterly basis and adjust them as necessary. The primary factors that could affect these liabilities may include changes in performance rates, as well as costs of replacement. Provision for estimated warranty costs is recorded at the time of sale and periodically adjusted, as required, to reflect actual experience. It is probable that we will incur future losses related to warranty claims we have received but that have not been fully investigated and related to claims not yet received. While our warranty liabilities represent our best estimates at May 31, 2020, we can provide no assurances that we will not experience material claims in the future or that we will not incur significant costs to resolve such claims beyond the amounts accrued or beyond what we may recover from our suppliers. Based upon the nature of the expense, product warranty expense is recorded as a component of cost of sales or within SG&A. Also, due to the nature of our businesses, the amount of claims paid can fluctuate from one period to the next. While our warranty liabilities represent our best estimates of our expected losses at any given time, from time to time we may revise our estimates based on our experience relating to factors such as weather conditions, specific circumstances surrounding product installations and other factors. The following table includes the changes in our accrued warranty balances: Year Ended May 31, 2020 2019 2018 (In thousands) Beginning Balance $ 10,414 $ 11,721 $ 19,149 Deductions (1) (20,762 ) (22,262 ) (26,199 ) Provision charged to expense 21,454 20,955 17,924 Acquisitions 847 Ending Balance $ 11,106 $ 10,414 $ 11,721 (1) Primarily claims paid during the year. Environmental Matters Like other companies participating in similar lines of business, some of our subsidiaries are involved in several proceedings relating to environmental matters. It is our policy to accrue remediation costs when it is probable that such efforts will be required and the related costs can be reasonably estimated. In general, our environmental accruals are undiscounted liabilities, which are exclusive of claims against third parties, and are not material to our financial statements during any of the periods presented. Other Contingencies We were notified by the SEC on June 24, 2014, that we are the subject of a formal investigation pertaining to the timing of our disclosure and accrual of loss reserves in fiscal 2013 with respect to the previously disclosed U.S. Department Of Justice (the “DOJ”) and the U.S. General Services Administration (the “GSA”) Office of Inspector General investigation into compliance issues relating to Tremco Roofing Division’s GSA contracts. As previously disclosed, our audit committee completed an investigation into the facts and circumstances surrounding the timing of our disclosure and accrual of loss reserves with respect to the GSA and DOJ investigation, and determined that it was appropriate to restate our financial results for the first, second and third quarters of fiscal 2013. The restatement shifted accrual amounts among the three quarters, which had the effect of reducing net income by $7.2 million and $10.8 million for the quarterly periods ended August 31, 2012 and November 30, 2012, respectively, and increasing net income for the quarterly period ended February 28, 2013 by $18.0 million. These restatements had no impact on our audited financial statements for the fiscal years ended May 31, 2013 or 2014. The audit committee’s investigation concluded that there was no intentional misconduct on the part of any of our officers. In connection with the foregoing, on September 9, 2016, the SEC filed an enforcement action against us and our General Counsel. We have cooperated with the SEC’s investigation and believe the allegations in the complaint mischaracterize both our and our General Counsel’s actions in connection with the matters related to our quarterly results in fiscal 2013 and are without merit. The complaint seeks disgorgement of gains that may have resulted from the conduct alleged in the complaint, and payment of unspecified monetary penalties from us and our General Counsel pursuant to Section 20(d) of the Securities Act and Section 21(d)(3) of the Exchange Act. Further, the complaint seeks to permanently enjoin us from violations of Sections 17(a)(2) and (a)(3) of the Securities Act, Sections 13(a), 13(b)(2)(A) and 13(b)(2)(B) of the Exchange Act, and Exchange Act Rules 12b-20, 13a-1, 13a-11 and 13a-13, and to permanently enjoin our General Counsel from violations of Sections 17(a)(2) and (a)(3) of the Securities Act and Exchange Act Rules 13b2-1 and 13b2-2(a). Both we and our General Counsel filed motions to dismiss the complaint on February 24, 2017. Those motions to dismiss the complaint were denied by the Court on September 29, 2017. We and our General Counsel filed answers to the complaint on October 16, 2017. Formal discovery commenced in January 2018, and closed as of June 3, 2019, other than some remaining, limited discovery requests. The parties engaged in written discovery, and several fact witnesses were deposed. We are currently awaiting further instruction regarding the remaining case schedule. We intend to continue to contest the allegations in the complaint vigorously. Also in connection with the foregoing, a stockholder derivative action was filed in the United States District Court, Northern District of Ohio, Eastern Division, against certain of our directors and officers. The court has stayed this stockholder derivative action pending the completion of the SEC enforcement action. The action by the SEC could result in sanctions against us and/or our General Counsel and could impose substantial additional costs and distractions, regardless of its outcome. We have determined that it is probable that we will incur a loss relating to this matter and have estimated a range of potential loss. We have accrued at the low end of the range of loss, as no amount within the range is more likely to occur, and no amount within the estimated range of loss would have a material impact on our consolidated financial condition, results of operations or cash flows. With respect to a previously disclosed case pending against one of our subsidiaries in which both trade secret and trademark infringement had been alleged, during fiscal 2019, we agreed to settle the case for $6.5 million.

Revenue

Revenue	12 Months Ended
	May 31, 2020
Revenue From Contract With Customer [Abstract]
Revenue	NOTE Q — REVENUE We operate a portfolio of businesses and product lines that manufacture and sell a variety of specialty paints, protective coatings and roofing systems, sealants and adhesives. We disaggregate revenues from the sales of our products and services based upon geographical location by each of our reportable segments, which are aligned by similar economic factors, trends and customers, which best depict the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. See Note R, “Segment Information,” for further details regarding our disaggregated revenues, as well as a description of each of the unique revenue streams related to each of our four reportable segments. Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. The majority of our revenue is recognized at a point in time. However, we also record revenues generated under construction contracts, mainly in connection with the installation of specialized roofing and flooring systems and related services. For certain polymer flooring installation projects, we account for our revenue using the output method, as we consider square footage of completed flooring to be the best measure of progress toward the complete satisfaction of the performance obligation. In contrast, for certain of our roofing installation projects, we account for our revenue using the input method, as that method was the best measure of performance as it considers costs incurred in relation to total expected project costs, which essentially represents the transfer of control for roofing systems to the customer. In general, for our construction contracts, we record contract revenues and related costs as our contracts progress on an over-time model. We have elected to apply the practical expedient to recognize revenue net of allowances for returns and any taxes collected from customers, which are subsequently remitted to governmental authorities. Payment terms and conditions vary by contract type, although our customers’ payment terms generally include a requirement to pay within 30 to 60 days of fulfilling our performance obligations. In instances where the timing of revenue recognition differs from the timing of invoicing, we have determined that our contracts generally do not include a significant financing component. We have elected to apply the practical expedient to treat all shipping and handling costs as fulfillment costs, as a significant portion of these costs are incurred prior to control transfer. Significant Judgments Our contracts with customers may include promises to transfer multiple products and/or services to a customer. Determining whether products and services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. For example, judgment is required to determine whether products sold in connection with the sale of installation services are considered distinct and accounted for separately, or not distinct and accounted for together with installation services and recognized over time. We provide customer rebate programs and incentive offerings, including special pricing and co-operative advertising arrangements, promotions and other volume-based incentives. These customer programs and incentives are considered variable consideration and recognized as a reduction of net sales. Up-front consideration provided to customers is capitalized as a component of other assets and amortized over the estimated life of the contractual arrangement. We include in revenue variable consideration only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the variable consideration is resolved. In general, this determination is made based upon known customer program and incentive offerings at the time of sale, and expected sales volume forecasts as it relates to our volume-based incentives. This determination is updated each reporting period. Certain of our contracts include contingent consideration that is receivable only upon the final inspection and acceptance of a project. We include estimates of such variable consideration in our transaction price. Based on historical experience, we consider the probability-based expected value method appropriate to estimate the amount of such variable consideration. Our products are generally sold with a right of return and we may provide other credits or incentives, which are accounted for as variable consideration when estimating the amount of revenue to recognize. Returns and credits are estimated at contract inception and updated at the end of each reporting period as additional information becomes available. We record a right of return liability to accrue for expected customer returns. Historical actual returns are used to estimate future returns as a percentage of current sales. Obligations for returns and refunds were not material individually or in the aggregate. We offer assurance type warranties on our products as well as separately sold warranty contracts. Revenue related to warranty contracts that are sold separately is recognized over the life of the warranty term. Warranty liabilities for our assurance type warranties are discussed further in Note P, “Contingencies and Other Accrued Losses.” Contract Balances Timing of revenue recognition may differ from the timing of invoicing customers. Our contract assets are recorded for products and services that have been provided to our customer but have not yet been billed, and are included in prepaid expenses and other current assets in our consolidated balance sheets. Our short-term contract liabilities consist of advance payments, or deferred revenue, and are included in other accrued liabilities in our consolidated balance sheets. Accounts receivable, net of allowances, and net contract assets (liabilities) consisted of the following: Year Ended May 31, 2020 2019 $ Change % Change (In thousands, except percents) Accounts receivable, less allowance $ 1,137,957 $ 1,232,350 $ (94,393 ) -7.7 % Contract assets $ 25,249 $ 21,628 $ 3,621 16.7 % Contract liabilities - short-term (25,288 ) (25,896 ) 608 -2.3 % Net Contract Liabilities $ (39 ) $ (4,268 ) $ 4,229 -99.1 % The allowance for doubtful accounts reflects our best estimate of probable losses inherent in the accounts receivable balance. We determine the allowance based on known troubled accounts, historical experience and other currently available evidence. The $4.2 million change in our net contract liabilities from May 31, 2019 to May 31, 2020, resulted primarily from the timing and volume of construction jobs in progress at May 31, 2020 versus May 31, 2019. During the fourth quarter of fiscal 2020, net sales at our general contracting and roofing services business increased by $22.1 million as compared to the fourth quarter of fiscal 2019. Despite the Covid-19 pandemic, this growth occurred as many of our customers chose to utilize this time, as fewer people were inside their facilities, to tackle projects that they had previously been putting off. Furthermore, roofing projects are completed outdoors, and contractors do not require entry into customers’ facilities. We also record long-term deferred revenue, which amounted to $66.0 million and $66.5 million as of May 31, 2020 and 2019, respectively. The long-term portion of deferred revenue is related to assurance type warranty contracts and is included in other long-term liabilities in our consolidated balance sheets. We have elected to adopt the practical expedient to not disclose the aggregate amount of transaction price allocated to performance obligations that are unsatisfied as of the end of the reporting period for performance obligations that are part of a contract with an original expected duration of one year or less. We recognize an asset for the incremental costs of obtaining a contract with a customer if we expect the benefit of those costs to be longer than one year. As our contract terms are primarily one year or less in duration, we have elected to apply a practical expedient to expense costs as incurred for costs to obtain a contract with a customer when the amortization period would have been one year or less. These costs include our internal sales force compensation program and certain incentive programs as we have determined annual compensation is commensurate with annual sales activities.

Segment Information

Segment Information	12 Months Ended
	May 31, 2020
Segment Reporting [Abstract]
Segment Information	NOTE R — SEGMENT INFORMATION Effective June 1, 2019, we realigned certain businesses and management structure to recognize how we allocate resources and analyze the operating performance of our businesses. Among other things, the realignment of certain businesses occurred as a result of the 2020 MAP to Growth that was approved and initiated between May and August 2018. As we began to execute on our operating improvement initiatives, we identified ways to realign certain businesses, and concluded that moving to an expanded reporting structure could help us to better manage our assets and improve synergies across the enterprise. This realignment changed our reportable segments beginning with our first quarter of fiscal 2020. As such we now report under four reportable segments instead of our three previous reportable segments. Our four reporting segments are: the CPG reportable segment, PCG reportable segment, Consumer reportable segment and SPG reportable segment. In connection with the realignment, we shifted our Kirker business out of Consumer into SPG, and also shifted our Dryvit and Nudura businesses out of SPG into CPG. The newly formed CPG also includes our Tremco, Tremco illbruck, Euclid Chemical, Viapol, Vandex and Flowcrete businesses. PCG includes Stonhard, Carboline, USL and Fibergrate businesses, while Consumer comprises the Rust-Oleum and DAP businesses. We operate a portfolio of businesses and product lines that manufacture and sell a variety of specialty paints, protective coatings and roofing systems, sealants an d adhesives. We manage our portfolio by organizing our businesses and product lines into four reportable segments as outlined above, which also represent our operating segments. Within each operating segment, we manage product lines and businesses which ge nerally address common markets, share similar economic characteristics, utilize similar technologies and can share manufacturing or distribution capabilities. Our four operating segments represent components of our business for which separate financial inf ormation is available that is utilized on a regular basis by our chief operating decision maker in determining how to allocate the assets of the company and evaluate performance. These four operating segments are each managed by an operating segment manage r, who is responsible for the day-to-day operating decisions and performance evaluation of the operating segment’s underlying businesses. We evaluate the profit performance of our segments primarily based on income before income taxes, but also look to ear nings (loss) before interest and taxes (“EBIT”), and/or adjusted EBIT, as a performance evaluation measure because interest expense is essentially related to acquisitions, as opposed to segment operations. Our CPG reportable segment products are sold throughout North America and also account for the majority of our international sales. Our construction product lines are sold directly to contractors, distributors and end-users, such as industrial manufacturing facilities, public institutions and other commercial customers. Products and services within this reportable segment include construction sealants and adhesives, coatings and chemicals, roofing systems, concrete admixture and repair products, building envelope solutions, insulated cladding, flooring systems, and weatherproofing solutions. Our PCG reportable segment products are sold throughout North America, as well as internationally, and are sold directly to contractors, distributors and end-users, such as industrial manufacturing facilities, public institutions and other commercial customers. Products and services within this reportable segment include high-performance flooring solutions, corrosion control and fireproofing coatings, infrastructure repair systems, fiberglass reinforced plastic gratings and drainage systems. Our Consumer reportable segment manufactures and markets professional use and do-it-yourself (“DIY”) products for a variety of mainly consumer applications, including home improvement and personal leisure activities. Our Consumer segment’s major manufacturing and distribution operations are located primarily in North America, along with a few locations in Europe and other parts of the world. Our Consumer reportable segment products are primarily sold directly to mass merchandisers, home improvement centers, hardware stores, paint stores, craft shops and through distributors. The Consumer reportable segment offers products that include specialty, hobby and professional paints; caulks; adhesives; silicone sealants and wood stains. Sales to The Home Depot, Inc. represented less than 10% of our consolidated net sales for fiscal 2020, 2019 and 2018, respectively. Furthermore, sales to The Home Depot, Inc. represented %, 29% and 28% of our Consumer segment net sales for each of the fiscal years ended May 31, 2020, 2019 and 2018, respectively. Our SPG reportable segment products are sold throughout North America and a few international locations, primarily in Europe. Our SPG product lines are sold directly to contractors, distributors and end-users, such as industrial manufacturing facilities, public institutions and other commercial customers. The SPG reportable segment offers products that include industrial cleaners, restoration services equipment, colorants, nail enamels, exterior finishes, edible coatings and specialty glazes for pharmaceutical and food industries, and other specialty original equipment manufacturer (“OEM”) coatings. In addition to our four reportable segments, there is a category of certain business activities and expenses, referred to as corporate/other, that does not constitute an operating segment. This category includes our corporate headquarters and related administrative expenses, results of our captive insurance companies, gains or losses on the sales of certain assets and other expenses not directly associated with any reportable segment. Assets related to the corporate/other category consist primarily of investments, prepaid expenses and headquarters’ property and equipment. These corporate and other assets and expenses reconcile reportable segment data to total consolidated income before income taxes and identifiable assets. We reflect income from our joint ventures on the equity method, and receive royalties from our licensees. The following tables reflect the results of our reportable segments consistent with our management philosophy, and represent the information we utilize, in conjunction with various strategic, operational and other financial performance criteria, in evaluating the performance of our portfolio of businesses. Year Ended May 31, 2020 2019 2018 (In thousands) Net Sales CPG $ 1,880,105 $ 1,899,744 $ 1,837,280 PCG 1,080,701 1,136,119 1,088,606 Consumer 1,945,220 1,858,453 1,722,220 SPG 600,968 670,235 673,537 Total $ 5,506,994 $ 5,564,551 $ 5,321,643 Income (Loss) Before Income Taxes CPG $ 209,663 $ 178,823 $ 174,032 PCG 102,345 77,388 112,614 Consumer 198,024 217,448 171,872 SPG 57,933 86,018 107,455 Corporate/Other (160,201 ) (219,832 ) (148,925 ) Total $ 407,764 $ 339,845 $ 417,048 Identifiable Assets CPG $ 1,622,632 $ 1,573,329 $ 1,531,485 PCG 925,569 951,644 974,104 Consumer 2,067,017 1,953,279 1,833,372 SPG 728,449 689,133 684,254 Corporate/Other 287,287 273,970 248,607 Total $ 5,630,954 $ 5,441,355 $ 5,271,822 Capital Expenditures CPG $ 63,393 $ 40,119 $ 39,368 PCG 23,868 22,158 22,102 Consumer 47,331 45,039 38,341 SPG 21,610 28,006 14,213 Corporate/Other 1,077 1,435 595 Total $ 157,279 $ 136,757 $ 114,619 Depreciation and Amortization CPG $ 46,491 $ 44,150 $ 41,538 PCG 23,850 27,116 21,394 Consumer 56,570 40,231 36,744 SPG 24,111 25,199 23,085 Corporate/Other 5,820 5,046 5,738 Total $ 156,842 $ 141,742 $ 128,499 Year Ended May 31, 2020 CPG Segment PCG Segment Consumer Segment SPG Segment Consolidated (In thousands) Net Sales (based on shipping location) (a) United States $ 1,068,552 $ 656,162 $ 1,573,966 $ 489,543 $ 3,788,223 Foreign Canada 159,986 71,689 116,424 8,354 356,453 Europe 418,249 247,904 195,783 74,162 936,098 Latin America 151,099 32,471 24,909 1,328 209,807 Asia Pacific 73,629 24,622 26,432 27,581 152,264 Other Foreign 8,590 47,853 7,706 - 64,149 Total Foreign 811,553 424,539 371,254 111,425 1,718,771 Total $ 1,880,105 $ 1,080,701 $ 1,945,220 $ 600,968 $ 5,506,994 Year Ended May 31, 2019 CPG Segment PCG Segment Consumer Segment SPG Segment Consolidated (In thousands) Net Sales (based on shipping location) (a) United States $ 1,003,227 $ 667,402 $ 1,462,446 $ 543,429 $ 3,676,504 Foreign Canada 181,089 82,897 117,305 8,908 390,199 Europe 477,761 251,600 213,466 86,197 1,029,024 Latin America 155,039 34,588 28,020 1,397 219,044 Asia Pacific 81,895 36,498 29,171 30,304 177,868 Other Foreign 733 63,134 8,045 - 71,912 Total Foreign 896,517 468,717 396,007 126,806 1,888,047 Total $ 1,899,744 $ 1,136,119 $ 1,858,453 $ 670,235 $ 5,564,551 Year Ended May 31, 2018 CPG Segment PCG Segment Consumer Segment SPG Segment Consolidated (In thousands) Net Sales (based on shipping location) (a) United States $ 938,062 $ 628,177 $ 1,325,509 $ 540,286 $ 3,432,034 Foreign Canada 166,600 83,607 106,460 8,682 365,349 Europe 485,583 241,639 221,484 91,712 1,040,418 Latin America 160,010 37,849 27,834 1,514 227,207 Asia Pacific 82,856 29,856 32,492 31,343 176,547 Other Foreign 4,169 67,478 8,441 - 80,088 Total Foreign 899,218 460,429 396,711 133,251 1,889,609 Total $ 1,837,280 $ 1,088,606 $ 1,722,220 $ 673,537 $ 5,321,643 Year Ended May 31, 2020 2019 2018 (In thousands) Long-Lived Assets (b) United States $ 2,146,333 $ 1,859,628 $ 1,807,046 Foreign Canada 224,177 242,582 139,259 Europe 358,511 343,501 361,317 United Kingdom 252,185 217,414 230,071 Other Foreign 195,425 225,230 241,301 Total Foreign 1,030,298 1,028,727 971,948 Total $ 3,176,631 $ 2,888,355 $ 2,778,994 (a) It is not practicable to obtain the information needed to disclose revenues attributable to each of our product lines. (b) Long-lived assets include all non-current assets, excluding non-current deferred income taxes.

Quarterly Information (Unaudite

Quarterly Information (Unaudited)	12 Months Ended
	May 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Quarterly Information (Unaudited)	NOTE S — QUARTERLY INFORMATION (UNAUDITED) The following is a summary of the quarterly results of operations for the years ended May 31, 2020 and 2019: For Quarter Ended (In thousands, except per share amounts) August 31 November 30 February 29 May 31 2020 Net Sales $ 1,472,764 $ 1,401,292 $ 1,173,976 $ 1,458,962 Gross Profit $ 574,754 $ 529,398 $ 434,747 $ 553,956 Net Income Attributable to RPM International Inc. Stockholders (a) $ 106,188 $ 77,030 $ 11,853 $ 109,314 Basic Earnings Per Share $ 0.82 $ 0.60 $ 0.09 $ 0.85 Diluted Earnings Per Share $ 0.82 $ 0.59 $ 0.09 $ 0.84 Dividends Per Share $ 0.350 $ 0.360 $ 0.360 $ 0.360 (In thousands, except per share amounts) August 31 November 30 February 28 May 31 2019 Net Sales $ 1,459,989 $ 1,362,531 $ 1,140,630 $ 1,601,401 Gross Profit $ 549,353 $ 493,731 $ 409,422 $ 635,814 Net Income Attributable to RPM International Inc. Stockholders (b) $ 69,764 $ 49,224 $ 14,190 $ 133,380 Basic Earnings Per Share $ 0.52 $ 0.37 $ 0.11 $ 1.03 Diluted Earnings Per Share $ 0.52 $ 0.37 $ 0.11 $ 1.02 Dividends Per Share $ 0.320 $ 0.350 $ 0.350 $ 0.350 (a) Reflects inventory-related charges of $28.8 million in our Consumer reportable segment resulting from SKU rationalization, excess and obsolescence, and exiting unprofitable product lines and regions and $3.2 million in our PCG segment resulting from the exit of unprofitable product lines and regions. Also reflects restructuring charges totaling $33.1 million that were incurred throughout fiscal 2020, as further described in Note B, “Restructuring”. (b) Reflects inventory-related charges of $10.5 million in our Consumer reportable segment resulting from more proactive management of inventory and $9.0 million and $1.0 million in inventory reductions related to restructuring activities in our PCG and CPG reportable segments, respectively. Also reflects restructuring charges totaling $42.3 million that were incurred throughout fiscal 2019, as further described in Note B, “Restructuring”. Quarterly earnings per share may not total to the yearly earnings per share due to the weighted-average number of shares outstanding in each quarter. In addition, during the first quarter of fiscal 2020, we changed our method of accounting for shipping and handling costs, which we have identified as costs paid to third-party shippers for transporting products to customers. Under the new method of accounting, we include shipping costs in cost of sales, whereas previously, they were included in SG&A expense. This change in accounting principle has been applied retrospectively, and the Consolidated Statements of Income amounts presented in the table above for both fiscal 2020 and fiscal 2019 reflect the effect of this accounting principle change.

Valuation And Qualifying Accoun

Valuation And Qualifying Accounts and Reserves (Schedule II)	12 Months Ended
	May 31, 2020
Valuation And Qualifying Accounts [Abstract]
Valuation and Qualifying Accounts and Reserves (Schedule II)	RPM International Inc. and Subsidiaries Valuation And Qualifying Accounts and Reserves (Schedule II) Additions Acquisitions Charged to (Disposals) Balance at Selling, of Businesses Balance at Beginning General and and (Deductions) End (In thousands) of Period Administrative Reclassifications Additions of Period Year Ended May 31, 2020 Current: Allowance for doubtful accounts $ 54,748 $ 16,683 $ (79 ) $ (15,505 ) (1) $ 55,847 Accrued product liability reserves $ 11,739 $ 5,356 $ — $ (6,637 ) (2) $ 10,458 Accrued environmental reserves $ 1,147 $ 1,168 $ — $ (345 ) (2) $ 1,970 Noncurrent: Accrued product liability reserves $ 29,942 $ 15,042 $ — (17,968 ) (2) $ 27,016 Accrued environmental reserves $ 4,211 $ 371 $ — $ (457 ) $ 4,125 Year Ended May 31, 2019 Current: Allowance for doubtful accounts $ 46,344 $ 18,646 $ (131 ) $ (10,111 ) (1) $ 54,748 Accrued product liability reserves $ 12,900 $ 12,696 $ — $ (13,857 ) (2) $ 11,739 Accrued environmental reserves $ 1,144 $ 875 $ — $ (872 ) (2) $ 1,147 Noncurrent: Accrued product liability reserves $ 29,902 $ 8,301 $ — (8,261 ) (2) $ 29,942 Accrued environmental reserves $ 3,571 $ 895 $ — $ (255 ) $ 4,211 Year Ended May 31, 2018 Current: Allowance for doubtful accounts $ 44,138 $ 4,487 $ — $ (2,281 ) (1) $ 46,344 Accrued product liability reserves $ 14,932 $ 6,169 $ — $ (8,201 ) (2) $ 12,900 Accrued environmental reserves $ 1,102 $ 413 $ — $ (371 ) (2) $ 1,144 Noncurrent: Accrued product liability reserves $ 28,222 $ 16,581 $ — (14,901 ) (2) $ 29,902 Accrued environmental reserves $ 1,747 $ 5,350 (3) $ — $ (3,526 ) $ 3,571 (1) Uncollectible accounts written off, net of recoveries (2) Primarily claims paid during the year, net of insurance contributions (3) Approximately $1.7 million of the additions are reflected in the line item entitled, “Restructuring Expense,” in our Consolidated Statements of Income.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	May 31, 2020
Accounting Policies [Abstract]
Consolidation, Noncontrolling Interests and Basis of Presentation	1) Consolidation, Noncontrolling Interests and Basis of Presentation Our financial statements include all of our majority-owned subsidiaries. We account for our investments in less-than-majority-owned joint ventures, for which we have the ability to exercise significant influence, under the equity method. Effects of transactions between related companies are eliminated in consolidation. Noncontrolling interests are presented in our Consolidated Financial Statements as if parent company investors (controlling interests) and other minority investors (noncontrolling interests) in partially owned subsidiaries have similar economic interests in a single entity. As a result, investments in noncontrolling interests are reported as equity in our Consolidated Financial Statements. Additionally, our Consolidated Financial Statements include 100% of a controlled subsidiary’s earnings, rather than only our share. Transactions between the parent company and noncontrolling interests are reported in equity as transactions between stockholders, provided that these transactions do not create a change in control. Our business is dependent on external weather factors. Historically, we have experienced strong sales and net income in our first, second and fourth fiscal quarters comprising the three-month periods ending August 31, November 30 and May 31, respectively, with weaker performance in our third fiscal quarter (December through February).
Use of Estimates	2) Use of Estimates The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Acquisitions/Divestitures	3) Acquisitions/Divestitures We account for business combinations and asset acquisitions using the acquisition method of accounting and, accordingly, the assets and liabilities of the acquired entities are recorded at their estimated fair values at the acquisition date. During the fiscal year ended May 31, 2020, we completed a total of three acquisitions among three of our four reportable segments. Within our CPG reportable segment, we acquired a manufacturer and marketer of joint sealants for commercial construction headquartered in Hudson, New Hampshire. Within our PCG reportable segment, we acquired a manufacturer of trenchless pipe rehabilitation equipment headquartered in Quebec, Canada. Lastly, within our SPG reportable segment, we acquired a manufacturer of dry stabilizer and emulsifier blends for the food industry, headquartered in Elgin, Illinois. During the fiscal year ended May 31, 2019, we completed a total of five acquisitions among three of our four reportable segments. During fiscal 2019, our CPG reportable segment completed two acquisitions, which included the following: a leading manufacturer and distributor of insulated concrete forms in North America, based in Ontario, Canada; and a distributor of concrete admixture products throughout Puerto Rico, the Dominican Republic and Panama. Within our PCG reportable segment, we acquired a provider of hygienic flooring solutions for the U.K. food and beverage industry, headquartered in the United Kingdom. Within our Consumer reportable segment, we acquired a brand line of specialty cleaning products and the exclusive North American licensing for a brand line of drain care products based in Cincinnati, Ohio; and a manufacturer of non-toxic specialty cleaners based in Ontario, Canada. The purchase price for each acquisition has been allocated to the estimated fair values of the assets acquired and liabilities assumed as of the date of acquisition. We have finalized the purchase price allocation for our fiscal 2019 acquisitions, and there was a $2.8 million adjustment reducing the fair value of deferred income taxes associated with the Consumer reportable segment’s acquisition of a manufacturer of non-toxic specialty cleaners based in Ontario, Canada. This adjustment is reflected in the “Fiscal 2019 Acquisitions” column of the table below. For acquisitions completed during fiscal 2020, the valuations of consideration transferred, total assets acquired and liabilities assumed are substantially complete. The primary areas that remain preliminary relate to the fair values of deferred income taxes. Acquisitions are aggregated by year of purchase in the following table: Fiscal 2020 Acquisitions Fiscal 2019 Acquisitions (In thousands) Weighted-Average Intangible Asset Amortization Life (In Years) Total Weighted-Average Intangible Asset Amortization Life (In Years) Total Current assets $ 10,649 $ 29,737 Property, plant and equipment 1,694 22,607 Goodwill N/A 28,291 N/A 75,142 Trade names - indefinite lives N/A 1,555 N/A 14,033 Other intangible assets 16 31,046 10 59,748 Other long-term assets 56 3,095 Total Assets Acquired $ 73,291 $ 204,362 Liabilities assumed (7,135 ) (33,174 ) Net Assets Acquired $ 66,156 (1) $ 171,188 (2) (1) Figure includes cash acquired of $ 1.6 (2) Figure includes cash acquired of $2.3 million. Our Consolidated Financial Statements reflect the results of operations of acquired businesses as of their respective dates of acquisition. Pro-forma results of operations for the years ended May 31, 2020 and 2019 were not materially different from reported results and, consequently, are not presented.
Foreign Currency	4) Foreign Currency The functional currency for each of our foreign subsidiaries is its principal operating currency. Accordingly, for the periods presented, assets and liabilities have been translated using exchange rates at year end, while income and expense for the periods have been translated using a weighted-average exchange rate. The resulting translation adjustments have been recorded in accumulated other comprehensive income (loss), a component of stockholders’ equity, and will be included in net earnings only upon the sale or liquidation of the underlying foreign investment, neither of which is contemplated at this time. Transaction gains and losses increased during the last three fiscal years due to the fluctuations in strength of the U.S. dollar, resulting in net transactional foreign exchange gains in fiscal 2020 of approximately $0.3 million and net transactional foreign exchange losses for fiscal 2019 and 2018 of approximately $4.8 million and $12.3 million, respectively.
Cash and Cash Equivalents	5) Cash and Cash Equivalents We consider all highly liquid debt instruments purchased with a maturity of three months or less to be cash equivalents. We do not believe we are exposed to any significant credit risk on cash and cash equivalents. The carrying amounts of cash and cash equivalents approximate fair value.
Property, Plant & Equipment	6 ) Property, Plant & Equipment May 31, 2020 2019 (In thousands) Land $ 85,860 $ 88,638 Buildings and leasehold improvements 469,483 459,542 Machinery and equipment 1,199,847 1,114,679 Total property, plant and equipment, at cost 1,755,190 1,662,859 Less: allowance for depreciation and amortization 905,504 843,648 Property, plant and equipment, net $ 849,686 $ 819,211 We review long-lived assets for impairment when circumstances indicate that the carrying values of these assets may not be recoverable. For assets that are to be held and used, an impairment charge is recognized when the estimated undiscounted future cash flows associated with the asset or group of assets are less than their carrying value. If impairment exists, an adjustment is made to write the asset down to its fair value, and a loss is recorded for the difference between the carrying value and the fair value. Fair values are determined based on quoted market values, discounted cash flows, internal appraisals or external appraisals, as applicable. Assets to be disposed of are carried at the lower of their carrying value or estimated net realizable value. Depreciation is computed primarily using the straight-line method over the following ranges of useful lives: Buildings and leasehold improvements 1 to 50 years Machinery and equipment 1 to 40 years Total depreciation expense for each fiscal period includes the charges to income that result from the amortization of assets recorded under finance leases. For the periods ended May 31, 2020, 2019, & 2018, we recorded depreciation expense of $108.5 million, $94.0 million, and
Revenue Recognition	7) Revenue Recognition Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. The majority of our revenue is recognized at a point in time. However, we also record revenues generated under construction contracts, mainly in connection with the installation of specialized roofing and flooring systems and related services. For certain polymer flooring installation projects, we account for our revenue using the output method, as we consider square footage of completed flooring to be the best measure of progress toward the complete satisfaction of the performance obligation. In contrast, for certain of our roofing installation projects, we account for our revenue using the input method, as that method was the best measure of performance as it considers costs incurred in relation to total expected project costs, which essentially represents the transfer of control for roofing systems to the customer. In general, for our other construction contracts, we record contract revenues and related costs as our contracts progress on an over-time model. Effective June 1, 2018, we adopted Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers,” and all the related amendments included within Accounting Standards Codification 606 (“ASC 606”).
Shipping Costs	8) Shipping Costs During the first quarter of fiscal 2020, we changed our method of accounting for shipping and handling costs, which we have identified as costs paid to third-party shippers for transporting products to customers. Under the new method of accounting, we include shipping costs in cost of sales, whereas previously, they were included in SG&A expense. We believe that including these expenses in cost of sales is preferable, as it better aligns these costs with the related revenue in the gross profit calculation and is consistent with the practices of other industry peers. This change in accounting principle has been applied retrospectively, and the Consolidated Statements of Income reflect the effect of this accounting principle change for all periods presented. This reclassification had no impact on income before income taxes, net income attributable to RPM International Inc. Stockholders, net income or earnings per share. The Consolidated Balance Sheets, Statements of Comprehensive Income, Statements of Stockholders’ Equity, and Statements of Cash Flows were not impacted by this accounting principle change. The Consolidat ed Statements of Income for fiscal 2019 and 2018 have been adjusted to reflect this change in accounting principle. The impact of the adjustment for fiscal 2019 and 2018 was an increase of $173.6 million and $164.7 million, respectively, to cost of sal es and a corresponding decrease to SG&A expense.
Allowance for Doubtful Accounts Receivable	9) Allowance for Doubtful Accounts Receivable An allowance for anticipated uncollectible trade receivable amounts is established using a combination of specifically identified accounts to be reserved and a reserve covering trends in collectibility. These estimates are based on an analysis of trends in collectibility and past experience, but are primarily made up of individual account balances identified as doubtful based on specific facts and conditions. Receivable losses are charged against the allowance when we determine uncollectibility. Actual collections of trade receivables could differ from our estimates due to changes in future economic or industry conditions or specific customer’s financial conditions. For the periods ended May 31, 2020, 2019 and 2018, bad debt expense approximated $16.7 million, $18.6 million and $9.1 million, respectively. Bad debt expense remained elevated in fiscal 2020 due to additional write-offs associated with exiting unprofitable product lines and regions in conjunction with our 2020 MAP to Growth and, to a much lesser degree, due to the impact Covid-19 is having on some of our customers’ ability to pay timely. The increase in bad debt expense during fiscal 2019 was primarily due to write-offs associated with our 2020 MAP to Growth. Refer to Note B, “Restructuring,” for further information.
Inventories	10) Inventories Inventories are stated at the lower of cost or net realizable value, cost being determined on a first-in, first-out (FIFO) basis and net realizable value being determined on the basis of replacement cost. Inventory costs include raw materials, labor and manufacturing overhead. We review the net realizable value of our inventory in detail on an on-going basis, with consideration given to various factors, which include our estimated reserves for excess, obsolete, slow-moving or distressed inventories. If actual market conditions differ from our projections, and our estimates prove to be inaccurate, write-downs of inventory values and adjustments to cost of sales may be required. Historically, our inventory reserves have approximated actual experience. For the periods ended May 31, 2020, 2019 and 2018, charges related to slow moving and/or obsolete inventory on hand approximated $39.6 million, $29.4 million and $43.7 million, respectively. During fiscal 2020, we recorded $28.8 million within our Consumer reportable segment as we continued to proactively manage excess quantities of inventory in order to accelerate cash conversion, SKU rationalization, and exiting unprofitable product lines and regions and $3.2 million within our PCG segment related to exiting unprofitable product lines and regions. During fiscal 2019, we recorded $10.5 million in charges resulting from more proactive management of inventory at our Consumer segment, and $9.0 million and $1.0 million of inventory charges related to restructuring activities at our PCG and CPG segments, respectively. During fiscal 2018, our Consumer reportable segment was impacted by tighter inventory management at many of their top customers and we made the determination to consolidate several divisions within certain Consumer segment businesses, close two manufacturing facilities and eliminate approximately 154 positions. These actions were taken by new leadership in place at our Rust-Oleum business in order to streamline processes, reduce overhead, improve margins and reduce working capital. In relation to these initiatives, our Consumer segment recognized $36.5 million of charges related to product line and SKU rationalization and related obsolete inventory identification during the fourth quarter of fiscal 2018. Additionally, during fiscal 2018, we incurred $1.2 million in inventory write-offs in connection with restructuring activities at our CPG reportable segment. Inventories were composed of the following major classes: May 31, 2020 2019 (In thousands) Raw material and supplies $ 282,579 $ 296,493 Finished goods 527,869 545,380 Total Inventory $ 810,448 $ 841,873
Goodwill and Other Intangible Assets	11) Goodwill and Other Intangible Assets We account for goodwill and other intangible assets in accordance with the provisions of ASC 350 and account for business combinations using the acquisition method of accounting and, accordingly, the assets and liabilities of the entities acquired are recorded at their estimated fair values at the acquisition date. Goodwill represents the excess of the purchase price paid over the fair value of net assets acquired, including the amount assigned to identifiable intangible assets. Goodwill is assigned to reporting units tha t are expected to benefit from the synergies of the business combination as of the acquisition date. Once goodwill has been allocated to the reporting units, it no longer retains its identification with a particular acquisition and becomes identified with the reporting unit in its entirety. Accordingly, the fair value of the reporting unit as a whole is available to support the recoverability of its goodwill. We evaluate our reporting units when changes in our operating structure occur, and if necessary, re assign goodwill using a relative fair value allocation approach. We test our goodwill balances at least annually, or more frequently as impairment indicators arise, at the reporting unit level. Our annual impairment assessment date has been designated as the first day of our fourth fiscal quarter. Our reporting units have been identified at the component level, which is the operating segment level or one level below our operating segments. We follow the Financial Accounting Standards Board (“FASB”) guidance found in Accounting Standards Codification (“ASC”) 350 that simplifies how an entity tests goodwill for impairment. It provides an option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, and whether it is necessary to perform the two-step goodwill impairment test. We assess qualitative factors in each of our reporting units that carry goodwill. We assess these qualitative factors to determine whether it is necessary to perform the two-step quantitative goodwill impairment test. The traditional two-step quantitative process is required only if we conclude that it is more likely than not that a reporting unit’s fair value is less than its carrying amount. However, we have an unconditional option to bypass a qualitative assessment and proceed directly to performing the traditional two-step quantitative analysis. We applied the traditional two-step quantitative process during our annual goodwill impairment assessment performed during the fourth quarter of fiscal 2020 and applied both the qualitative and traditional two-step quantitative processes during our annual goodwill impairment assessment performed during the fourth quarters of fiscal 2019 and 2018. In applying the first step of the quantitative test, we compare the fair value of a reporting unit to its carrying value. Calculating the fair value of a reporting unit requires our use of estimates and assumptions. We use significant judgment in determining the most appropriate method to establish the fair value of a reporting unit. We estimate the fair value of a reporting unit by employing various valuation techniques, depending on the availability and reliability of comparable market value indicators, and employ methods and assumptions that include the application of third-party market value indicators and the computation of discounted future cash flows determined from estimated cashflow adjustments to a reporting unit’s annual projected earnings before interest, taxes, depreciation and amortization (“EBITDA”), or adjusted EBITDA, which adjusts for one-off items impacting revenues and/or expenses that are not considered by management to be indicative of ongoing operations. Our fair value estimations may include a combination of value indications from both the market and income approaches, as the income approach considers the future cash flows from a reporting unit’s ongoing operations as a going concern, while the market approach considers the current financial environment in establishing fair value. We evaluate discounted future cash flows determined from estimated cashflow adjustments to a reporting unit’s projected EBITDA. Under this approach, we calculate the fair value of a reporting unit based on the present value of estimated future cash flows. If the fair value of the reporting unit exceeds the carrying value of the net assets of the reporting unit, goodwill is not impaired. An indication that goodwill may be impaired results when the carrying value of the net assets of a reporting unit exceeds the fair value of the reporting unit. At that point, the second step of the impairment test is performed, which requires a fair value estimate of each tangible and intangible asset in order to determine the implied fair value of the reporting unit’s goodwill. If the carrying value of a reporting unit’s goodwill exceeds its implied fair value, then we record an impairment loss equal to the difference. In applying the discounted cash flow methodology, we rely on a number of factors, including future business plans, actual and forecasted operating results, and market data. The significant assumptions employed under this method include discount rates; revenue growth rates, including assumed terminal growth rates; and operating margins used to project future cash flows for a reporting unit. The discount rates utilized reflect market-based estimates of capital costs and discount rates adjusted for management’s assessment of a market participant’s view with respect to other risks associated with the projected cash flows of the individual reporting unit. Our estimates are based upon assumptions we believe to be reasonable, but which by nature are uncertain and unpredictable. We believe we incorporate ample sensitivity ranges into our analysis of goodwill impairment testing for a reporting unit, such that actual experience would need to be materially out of the range of expected assumptions in order for an impairment to remain undetected. Prior to our fiscal 2019 annual goodwill impairment test, in connection with our 2020 MAP to Growth, during the third fiscal quarter ended February 28, 2019, we changed the composition of certain of our reporting units that were included in our former industrial reportable segment. Accordingly, we performed an interim impairment test for each reporting unit that changed in accordance with ASC 350, “Intangibles – Goodwill and Other.” Our interim goodwill impairment assessments did not indicate the presence of any goodwill impairment for any of the reporting units tested. However, as previously disclosed during the period ended May 31, 2019, we noted that our Construction Product Group – Europe, which had $ 125.0 million of goodwill at February 28, 2019, had an excess of fair value over carrying value of approximately 9 % using the income approach. Our annual goodwill impairment test for fiscal year 2019, which considered both the income and market approach, res ulted in a substantial excess of fair value over carrying value. We continued to monitor the performance of this reporting unit during fiscal 2020, and did not note any interim indicators of impairment. Furthermore, our annual goodwill impairment test fo r fiscal 2020 resulted in a substantial excess of fair value over carrying value. On June 1, 2019 (i.e., at the beginning of fiscal 2020), the composition of our reportable segments was revised, as further discussed in Note R, “Segment Information.” Prior to implementing the revised segment reporting structure beginning in fiscal 2020, our previously disclosed Industrial segment comprised two operating segments, the CPG operating segment and the PCG operating segment. Each of these operating segments comprised several reporting units, all of which were tested during our last annual goodwill impairment test during the fourth quarter of fiscal 2019 and again during the fourth quarter of fiscal 2020. Also, in connection with our 2020 Map to Growth, we realigned certain businesses and management structure within our SPG segment. As such, our former Wood Finishes Group reporting unit was split into two separate reporting units: Guardian and Wood Finishes Group. Additionally, our former Kop-Coat Group reporting unit was split into two reporting units: Kop-Coat Industrial Protection Products and Kop-Coat Group. We performed an interim goodwill impairment test for each of the new reporting units upon the change in reportable segments, business realignment and management structure using a quantitative assessment. We concluded that the estimated fair values exceeded the carrying values for these new reporting units, and accordingly, no indications of impairment were identified as a result of these changes during the first quarter of fiscal 2020. As a result of the annual impairment assessments performed for fiscal 2020, 2019 and 2018, there were no goodwill impairments, including no reporting units that were at risk of failing step one of the traditional two-step quantitative analysis. Additionally, we test all indefinite-lived intangible assets for impairment at least annually during our fiscal fourth quarter. We follow the guidance provided by ASC 350 that simplifies how an entity tests indefinite-lived intangible assets for impairment. It provides an option to first assess qualitative factors to determine whether it is more likely than not that the fair value of an indefinite-lived intangible asset is less than its carrying amount before applying traditional quantitative tests. We applied both qualitative and quantitative processes during our annual indefinite-lived intangible asset impairment assessments performed during the fourth quarters of fiscal 2020, 2019 and 2018. The annual impairment assessment involves estimating the fair value of each indefinite-lived asset and comparing it with its carrying amount. If the carrying amount of the intangible asset exceeds its fair value, we record an impairment loss equal to the difference. Calculating the fair value of the indefinite-lived assets requires our significant use of estimates and assumptions. We estimate the fair values of our intangible assets by applying a relief-from-royalty calculation, which includes discounted future cash flows related to each of our intangible asset’s projected revenues. In applying this methodology, we rely on a number of factors, including actual and forecasted revenues and market data. Our required annual impairment tests of each of our indefinite-lived intangible assets performed during fiscal 2020, 2019, and 2018 did not result in any additional impairment loss. No impairment losses were recorded as a result of our annual impairment tests, however, we did record an impairment charge in both fiscal 2020 and fiscal 2019. In fiscal 2020, in connection with 2020 Map to Growth, we recorded an impairment charge of $4.0 million included in restructuring expense in our Consumer reportable segment for impairment losses on indefinite-lived trade names. In fiscal 2019, we recorded an impairment charge of $4.2 million, of which $2.0 million was recorded by our CPG reportable segment for impairment losses on indefinite-lived trade names and approximately $2.2 million was recorded by our SPG reportable segment for impairment losses on definite-lived customer-related intangibles. Refer to Note C “Goodwill and Other Intangible Assets” for additional details on these indefinite-lived intangible asset impairment charges.
Advertising Costs	12) Advertising Costs Advertising costs are charged to operations when incurred and are included in SG&A expenses. For the years ended May 31, 2020, 2019 and 2018, advertising costs were $49.7 million, $57.5 million and $58.0 million, respectively.
Research and Development	13) Research and Development Research and development costs are charged to operations when incurred and are included in SG&A expenses. The amounts charged to expense for the years ended May 31, 2020, 2019 and 2018 were $76.5 million, $71.6 million and $69.7 million, respectively.
Stock-Based Compensation	14) Stock-Based Compensation Stock-based compensation represents the cost related to stock-based awards granted to our employees and directors, which may include restricted stock and stock appreciation rights (“SARs”). We measure stock-based compensation cost at the date of grant, based on the estimated fair value of the award. We recognize the cost as expense on a straight-line basis (net of estimated forfeitures) over the related vesting period. Refer to Note J, “Stock-Based Compensation,” for further information.
Investment (Income), Net	15) Investment (Income), Net Investment (income), net, consists of the following components: Year Ended May 31, 2020 2019 2018 (In thousands) Interest (income) $ (5,313 ) $ (4,885 ) $ (5,003 ) Net loss (gain) on marketable securities (1,629 ) 8,366 (11,704 ) Dividend (income) (2,797 ) (4,211 ) (3,735 ) Investment (income), net $ (9,739 ) $ (730 ) $ (20,442 ) Net Loss (Gain) on Marketable Securities During fiscal 2020, we recognized realized losses on sales of available-for-sale securities of $0.7 million, realized gains on trading securities of $0.9 million and unrealized losses on trading securities of $0.4 million. Also during the year ended May 31, 2020 we recognized unrealized gains of $1.8 million on marketable equity securities. During fiscal 2019, we recognized realized losses on sales of available-for-sale securities of $3.0 million, realized gains on trading securities of $0.5 million and unrealized losses on trading securities of $1.3 million. Also during the year ended May 31, 2019, we recognized unrealized losses of $4.6 million on marketable equity securities as a result of our adoption of ASU 2016-01. During fiscal 2018, we recognized gross realized gains and losses on sales of marketable securities of $11.9 million and $1.8 million, respectively.
Other Expense (Income), Net	16) Other Expense (Income), Net Other expense (income), net, consists of the following components: Year Ended May 31, 2020 2019 2018 (In thousands) Royalty expense (income), net (a) $ 5,206 $ (96 ) $ 404 (Income) related to unconsolidated equity affiliates (165 ) (332 ) (1,002 ) Pension non-service costs 6,076 1,647 - Loss on extinguishment of debt (b) - 3,051 - Loss on divestiture (c) 949 - - Other expense (income), net $ 12,066 $ 4,270 $ (598 ) (a) Includes a $5.3 million charge incurred during the fourth quarter of fiscal 2020 related to the termination of a licensing agreement within our Consumer reportable segment. (b) Reflects the loss incurred upon divestiture of a contracting business located in Australia, which had reported through our PCG segment. In connection with the redemption of all of our outstanding 2.25% convertible senior notes in November 2018, we recognized a loss of $3.1 million, due to the fair value remeasurement on the date of conversion. (c) Reflects the loss incurred upon divestiture of a contracting business located in Australia, which had reported through our PCG segment.
Income Taxes	17) Income Taxes The provision for income taxes is calculated using the asset and liability method. Under the asset and liability method, deferred income taxes are recognized for the tax effect of temporary differences between the financial statement carrying amount of assets and liabilities and the amounts used for income tax purposes and for certain changes in valuation allowances. Valuation allowances are recorded to reduce certain deferred tax assets when, in our estimation, it is more likely than not that a tax benefit will not be realized.
Earnings Per Share of Common Stock	18) Earnings Per Share of Common Stock Earnings per share (EPS) is computed using the two-class method. The two-class method determines EPS for each class of common stock and participating securities according to dividends and dividend equivalents and their respective participation rights in undistributed earnings. Our unvested share-based payment awards that contain rights to receive non-forfeitable dividends are considered participating securities. Basic EPS of common stock is computed by dividing net income by the weighted-average number of shares of common stock outstanding for the period. Diluted EPS of common stock is computed on the basis of the weighted-average number of shares of common stock, plus the effect of dilutive potential shares of common stock outstanding during the period using the treasury stock method. Dilutive potential shares of common stock include outstanding SARS, restricted stock awards and convertible notes. See Note L, “Earnings Per Share of Common Stock,” for additional information.
Other Recent Accounting Pronouncements	19) Other Recent Accounting Pronouncements New Pronouncements Adopted In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842),” which increases lease transparency and comparability among organizations. Under the new standard, lessees are required to recognize a right-of-use (“ROU”) asset representing our right to use an underlying asset and a lease liability representing our obligation to make lease payments over the lease term, with the exception of leases with a term of 12 months or less, which permits a lessee to make an accounting policy election by class of underlying asset not to recognize lease assets and liabilities. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, and early adoption is permitted. In March 2018, the FASB approved an alternative transition method to the modified retrospective approach, which eliminates the requirement to restate prior period financial statements and requires the cumulative effect of the retrospective allocation to be recorded as an adjustment to the opening balance of retained earnings at the date of adoption. We adopted the new leasing standard on the required effective date of June 1, 2019 using the alternative transition method as described above. Results for reporting periods beginning on June 1, 2019 are presented under Topic 842, while prior period amounts continue to be reported and disclosed in accordance with our historical accounting treatment under Accounting Standards Codification (“ASC”) 840, “Leases (ASC 840).” We elected to apply the package of practical expedients permitted under the ASC 842 transition guidance. Accordingly, we did not reassess whether any expired or expiring contracts contain leases, lease classification between finance and operating leases, and the recognition of initial direct costs of leases commencing before the effective date. We also applied the practical expedient to not separate lease and non-lease components to existing leases, as well as new leases through transition. However, we did not elect the hindsight practical expedient to determine the lease term for existing leases. As a result of our adoption procedures, we have determined that the new guidance had a material impact on our Consolidated Balance Sheets and did not have a material effect on our Consolidated Statements of Income, Consolidated Statements of Cash Flows or our debt covenants. The effects of our transition to ASC 842 resulted in no cumulative adjustment to retained earnings in the period of adoption. Refer to Note M, “Leases,” for additional information. In February 2018, the FASB issued ASU 2018-02, “Income Statement (Topic 220), Reporting Comprehensive Income: Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income” which allows for an entity to reclassify the tax effects of the U.S. Tax Cuts and Jobs Act of 2017 (“Tax Act”) that were previously recorded in accumulated comprehensive income to retained earnings. The adoption of this new guidance, effective June 1, 2019, did not have a material effect on our Consolidated Financial Statements as we did not elect the option to reclassify to retained earnings the tax effects resulting from the Tax Act that were previously recorded in accumulated other comprehensive income (“AOCI”). New Pronouncements Issued In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses,” which requires an organization to measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. Additionally, the standard amends the current available-for-sale security other-than-temporary impairment model for debt securities. The guidance is effective for fiscal years beginning after December 15, 2019 and for interim periods therein. Early adoption is permitted beginning after Decemb er 15, 2018. We do not expect our adoption of this guidance to have a material impact on our Consolidated Financial Statements. In January 2017, the FASB issued ASU 2017-04, “Simplifying the Test for Goodwill Impairment,” to eliminate step two from the goodwill impairment test in order to simplify the subsequent measurement of goodwill. The guidance is effective for fiscal years beginning after December 15, 2019. Early application is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. Adoption of this guidance is not expected to have a material impact on our Consolidated Financial Statements. In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820), – Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement,” which makes a number of changes meant to add, modify or remove certain disclosure requirements associated with the movement amongst or hierarchy associated with Level 1, Level 2 and Level 3 fair value measurements. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted upon issuance of the update. We do not expect our adoption of this guidance to have a material impact on our Consolidated Financial Statements. In August 2018, the FASB issued ASU 2018-14, “Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20), Disclosure Framework – Changes to the Disclosure Requirements for Defined Benefit Plans,” which makes a number of changes meant to add, modify or remove certain disclosure requirements associated with employers that sponsor defined benefit or other postretirement plans. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption is permitted for all entities and the amendments in this update are required to be applied on a retrospective basis to all periods presented. We are currently reviewing the provisions of this new pronouncement, but do not expect our adoption of this guidance to have a material impact on our Consolidated Financial Statements. In December 2019, the FASB issued ASU 2019-12, “Income Taxes (Topic 740),” which simplifies the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The amendments also improve consistent application of and simplify GAAP for other areas of Topic 740 by clarifying and amending existing guidance. This guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption of the amendments is permitted, including adoption in any interim period for which financial statements have not yet been issued. Depending on the amendment, adoption may be applied on the retrospective, modified retrospective or prospective basis. We are currently reviewing the provisions of this new pronouncement, but do not expect our adoption of this guidance to have a material impact on our Consolidated Financial Statements.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	May 31, 2020
Accounting Policies [Abstract]
Asset Acquired and Liabilities Assumed on Acquisition	Acquisitions are aggregated by year of purchase in the following table: Fiscal 2020 Acquisitions Fiscal 2019 Acquisitions (In thousands) Weighted-Average Intangible Asset Amortization Life (In Years) Total Weighted-Average Intangible Asset Amortization Life (In Years) Total Current assets $ 10,649 $ 29,737 Property, plant and equipment 1,694 22,607 Goodwill N/A 28,291 N/A 75,142 Trade names - indefinite lives N/A 1,555 N/A 14,033 Other intangible assets 16 31,046 10 59,748 Other long-term assets 56 3,095 Total Assets Acquired $ 73,291 $ 204,362 Liabilities assumed (7,135 ) (33,174 ) Net Assets Acquired $ 66,156 (1) $ 171,188 (2) (1) Figure includes cash acquired of $ 1.6 (2) Figure includes cash acquired of $2.3 million.
Property, Plant and Equipment	May 31, 2020 2019 (In thousands) Land $ 85,860 $ 88,638 Buildings and leasehold improvements 469,483 459,542 Machinery and equipment 1,199,847 1,114,679 Total property, plant and equipment, at cost 1,755,190 1,662,859 Less: allowance for depreciation and amortization 905,504 843,648 Property, plant and equipment, net $ 849,686 $ 819,211
Useful Lives	Depreciation is computed primarily using the straight-line method over the following ranges of useful lives: Buildings and leasehold improvements 1 to 50 years Machinery and equipment 1 to 40 years
Major Classes of Inventories	Inventories were composed of the following major classes: May 31, 2020 2019 (In thousands) Raw material and supplies $ 282,579 $ 296,493 Finished goods 527,869 545,380 Total Inventory $ 810,448 $ 841,873
Investment (Income), Net	Investment (income), net, consists of the following components: Year Ended May 31, 2020 2019 2018 (In thousands) Interest (income) $ (5,313 ) $ (4,885 ) $ (5,003 ) Net loss (gain) on marketable securities (1,629 ) 8,366 (11,704 ) Dividend (income) (2,797 ) (4,211 ) (3,735 ) Investment (income), net $ (9,739 ) $ (730 ) $ (20,442 )
Other Expense (Income), Net	Other expense (income), net, consists of the following components: Year Ended May 31, 2020 2019 2018 (In thousands) Royalty expense (income), net (a) $ 5,206 $ (96 ) $ 404 (Income) related to unconsolidated equity affiliates (165 ) (332 ) (1,002 ) Pension non-service costs 6,076 1,647 - Loss on extinguishment of debt (b) - 3,051 - Loss on divestiture (c) 949 - - Other expense (income), net $ 12,066 $ 4,270 $ (598 ) (a) Includes a $5.3 million charge incurred during the fourth quarter of fiscal 2020 related to the termination of a licensing agreement within our Consumer reportable segment. (b) Reflects the loss incurred upon divestiture of a contracting business located in Australia, which had reported through our PCG segment. In connection with the redemption of all of our outstanding 2.25% convertible senior notes in November 2018, we recognized a loss of $3.1 million, due to the fair value remeasurement on the date of conversion. (c) Reflects the loss incurred upon divestiture of a contracting business located in Australia, which had reported through our PCG segment.

Restructuring (Tables)

Restructuring (Tables)	12 Months Ended
	May 31, 2020
Restructuring And Related Activities [Abstract]
Summary of Charges Recorded in Connection with Restructuring by Reportable Segment	A summary of the charges recorded in connection with restructuring by reportable segment during is as follows: Year Ended Year Ended Year Ended Cumulative Costs Total Expected (in thousands) May 31, 2020 May 31, 2019 May 31, 2018 to Date Costs CPG Segment: Severance and benefit costs (a) $ 6,866 $ 9,459 $ 1,769 $ 18,094 $ 22,243 Facility closure and other related costs 1,508 1,924 1,045 4,477 7,140 Other asset write-offs 352 215 1,373 1,940 2,024 Total Charges $ 8,726 $ 11,598 $ 4,187 $ 24,511 $ 31,407 PCG Segment: Severance and benefit costs (b) $ 6,973 $ 6,012 $ 400 $ 13,385 $ 17,073 Facility closure and other related costs 1,873 3,474 - 5,347 7,349 Other asset write-offs 248 353 - 601 908 Total Charges $ 9,094 $ 9,839 $ 400 $ 19,333 $ 25,330 Consumer Segment: Severance and benefit costs (c) $ 3,089 $ 1,726 $ 5,652 $ 10,467 $ 11,493 Facility closure and other related costs 2,245 1,553 5,139 8,937 10,137 Other asset write-offs 4,094 25 - 4,119 4,119 Total Charges $ 9,428 $ 3,304 $ 10,791 $ 23,523 $ 25,749 SPG Segment: Severance and benefit costs (d) $ 1,592 $ 5,338 $ - $ 6,930 $ 8,267 Facility closure and other related costs 2,922 1,244 - 4,166 5,649 Other asset write-offs 119 1,003 - 1,122 1,170 Total Charges $ 4,633 $ 7,585 $ - $ 12,218 $ 15,086 Corporate/Other Segment: Severance and benefit costs (e) $ 1,227 $ 9,984 $ 2,136 $ 13,347 $ 13,347 Total Charges $ 1,227 $ 9,984 $ 2,136 $ 13,347 $ 13,347 Consolidated: Severance and benefit costs $ 19,747 $ 32,519 $ 9,957 $ 62,223 $ 72,423 Facility closure and other related costs 8,548 8,195 6,184 22,927 30,275 Other asset write-offs 4,813 1,596 1,373 7,782 8,221 Total Charges $ 33,108 $ 42,310 $ 17,514 $ 92,932 $ 110,919 a) Severance and benefit costs are associated with the elimination of 112 b) Severance and benefit costs are associated with the elimination of 161 c) Severance and benefit costs are associated with the elimination of 92 d) Severance and benefit costs are associated with the elimination of 94 e) Severance and benefit costs are associated with the elimination of two positions during fiscal 2020. Also reflects fiscal 2019 charges related to the severance of two two four three
Summary of Activity in Restructuring Reserves	A summary of the activity in the restructuring reserves related to the 2020 MAP to Growth plan is as follows: (in thousands) Severance and Benefits Costs Facility Closure and Other Related Costs Other Asset Write-Offs Total Balance at June 1, 2018 $ 9,957 $ 6,184 $ 1,373 $ 17,514 Additions charged to expense 32,519 8,195 1,596 42,310 Cash payments charged against reserve (31,219 ) (3,019 ) - (34,238 ) Non-cash charges included above (f) (6,420 ) (3,503 ) (2,969 ) (12,892 ) Balance at May 31, 2019 $ 4,837 $ 7,857 $ - $ 12,694 Additions charged to expense 19,747 8,548 4,813 33,108 Cash payments charged against reserve (17,038 ) (9,239 ) - (26,277 ) Non-cash charges included above (f) (189 ) (1,286 ) (4,813 ) (6,288 ) Balance at May 31, 2020 $ 7,357 $ 5,880 $ - $ 13,237

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	May 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill, by Reportable Segment	The changes in the carrying amount of goodwill, by reportable segment, for the years ended May 31, 2020 and 2019, are as follows: CPG PCG Consumer SPG (In thousands) Segment Segment Segment Segment Total Balance as of June 1, 2018 $ 372,033 $ 186,775 $ 477,718 $ 155,648 $ 1,192,174 Acquisitions 47,151 4,314 25,994 77,459 Translation adjustments & other (11,755 ) (5,830 ) (4,325 ) (1,961 ) (23,871 ) Balance as of May 31, 2019 407,429 185,259 499,387 153,687 1,245,762 Acquisitions 14,689 3,023 10,352 28,064 Translation adjustments & other (1) (16,764 ) (2,878 ) (3,169 ) (949 ) (23,760 ) Balance as of May 31, 2020 $ 405,354 $ 185,404 $ 496,218 $ 163,090 $ 1,250,066 (1) Activity includes a $2.3 million decrease to goodwill within our Consumer segment related to adjustments to preliminary purchase price allocations, primarily due to deferred tax adjustments.
Other Intangible Assets Major Classes	Other intangible assets consist of the following major classes: Gross Net Other Amortization Carrying Accumulated Intangible (In thousands) Period (In Years) Amount Amortization Assets As of May 31, 2020 Amortized intangible assets Formulae 9 to 33 $ 230,621 $ (160,771 ) $ 69,850 Customer-related intangibles 5 to 33 439,153 (197,752 ) 241,401 Trademarks/names 5 to 40 30,700 (17,224 ) 13,476 Other 1 to 33 32,224 (23,281 ) 8,943 Total Amortized Intangibles 732,698 (399,028 ) 333,670 Indefinite-lived intangible assets Trademarks/names 250,710 250,710 Total Other Intangible Assets $ 983,408 $ (399,028 ) $ 584,380 As of May 31, 2019 Amortized intangible assets Formulae 9 to 33 $ 227,208 $ (150,091 ) $ 77,117 Customer-related intangibles 5 to 33 413,475 (172,238 ) 241,237 Trademarks/names 5 to 40 32,998 (16,867 ) 16,131 Other 1 to 33 36,709 (26,599 ) 10,110 Total Amortized Intangibles 710,390 (365,795 ) 344,595 Indefinite-lived intangible assets Trademarks/names 256,487 256,487 Total Other Intangible Assets $ 966,877 $ (365,795 ) $ 601,082

Marketable Securities (Tables)

Marketable Securities (Tables)	12 Months Ended
	May 31, 2020
Investments Debt And Equity Securities [Abstract]
Summary of Available-for-Sale Debt Securities by Asset Type	The following tables summarize available-for-sale debt securities held at May 31, 2020 and 2019 by asset type: Available-For-Sale Debt Securities (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Net Carrying Amount) May 31, 2020 Fixed maturity: U.S. treasury and other government $ 25,462 $ 1,314 $ (40 ) $ 26,736 Corporate bonds 143 43 186 Total available-for-sale debt securities $ 25,605 $ 1,357 $ (40 ) $ 26,922 Available-For-Sale Debt Securities (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Net Carrying Amount) May 31, 2019 Fixed maturity: U.S. treasury and other government $ 24,483 $ 372 $ (308 ) $ 24,547 Corporate bonds 422 43 (3 ) 462 Total available-for-sale debt securities $ 24,905 $ 415 $ (311 ) $ 25,009
Summary of Available-for-Sale Debt Securities in Unrealized Loss Position and Included in Accumulated Other Comprehensive (Loss), Aggregated by Length of Time Investments	Summarized below are the available-for-sale debt securities we held at May 31, 2020 and 2019 that were in an unrealized loss position and that were included in accumulated other comprehensive income (loss), aggregated by the length of time the investments had been in that position: May 31, 2020 May 31, 2019 (In thousands) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Total investments with unrealized losses $ 2,028 $ (40 ) $ 11,508 $ (311 ) Unrealized losses with a loss position for less than 12 months - - 806 (2 ) Unrealized losses with a loss position for more than 12 months 2,028 (40 ) 10,702 (309 )
Net Carrying Values of Debt Securities by Contractual Maturity	The net carrying values of available-for-sale debt securities at May 31, 2020, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties. (In thousands) Amortized Cost Fair Value Due: Less than one year $ 7,567 $ 7,581 One year through five years 10,170 10,623 Six years through ten years 6,084 6,591 After ten years 1,784 2,127 $ 25,605 $ 26,922

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	May 31, 2020
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis and Categorized using Fair Value Hierarchy	The following tables present our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy. In addition, with respect to our derivative assets and liabilities measured at fair value, refer to Note F – Derivatives and Hedging for discussion of their classification within the fair value hierarchy. (In thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value at May 31, 2020 Available-for-sale debt securities: U.S. Treasury and other government $ 26,736 $ 26,736 Corporate bonds 186 186 Total available-for-sale debt securities - 26,922 - 26,922 Trading and other equity securities: Stocks-domestic 3,870 3,870 Mutual funds - foreign 28,815 28,815 Mutual funds - domestic 63,536 63,536 Total trading and other equity securities 3,870 92,351 - 96,221 Contingent consideration (15,682 ) (15,682 ) Total $ 3,870 $ 119,273 $ (15,682 ) $ 107,461 (In thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value at May 31, 2019 Available-for-sale debt securities: U.S. Treasury and other government $ - $ 24,547 $ - $ 24,547 Corporate bonds 462 462 Total available-for-sale debt securities - 25,009 - 25,009 Trading and other equity securities: Mutual funds - foreign 32,082 32,082 Mutual funds - domestic 67,739 67,739 Total trading and other equity securities - 99,821 - 99,821 Contingent consideration (21,551 ) (21,551 ) Total $ - $ 124,830 $ (21,551 ) $ 103,279
Fair Value and Carrying Value of Financial Instruments and Long-Term Debt	Based on the analysis performed, the fair value and the carrying value o f our financial instruments and long-term debt as of May 31, 2020 and 2019 are as follows: At May 31, 2020 (In thousands) Carrying Value Fair Value Cash and cash equivalents $ 233,416 $ 233,416 Marketable equity securities 87,111 87,111 Marketable debt securities 26,922 26,922 Long-term debt, including current portion 2,539,180 2,618,719 At May 31, 2019 (In thousands) Carrying Value Fair Value Cash and cash equivalents $ 223,168 $ 223,168 Marketable equity securities 87,525 87,525 Marketable debt securities 25,009 25,009 Long-term debt, including current portion 2,525,908 2,526,817

Derivatives and Hedging (Tables

Derivatives and Hedging (Tables)	12 Months Ended
	May 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Schedule of Derivatives Instruments for Gains or Losses Initially Recognized in AOCI in Consolidated Balance Sheet	The following table summarizes the location and effects of the Company’s derivatives instruments on the Consolidated Statements of Comprehensive Income and Consolidated Statements of Operations for gains or losses initially recognized in AOCI in the Consolidated Balance Sheet: Pretax gain/(loss) recognized in AOCI Pretax gain/(loss) reclassified from AOCI into income (In thousands) Year Ended May 31, Year Ended May 31, Derivatives in hedging relationships 2020 2019 2018 Income Statement Location 2020 2019 2018 Interest Rate Swap (Cash Flow) $ (7,998 ) $ - $ - Interest Expense $ 170 $ - $ - Cross Currency Swap (Cash Flow) (2,254 ) - - Interest Expense 554 - - Cross Currency Swap (Cash Flow) - - - Foreign Exchange Gain/(Loss) (2,654 ) - - Cross Currency Swap (Net Investment) 1,866 4,998 (769 ) Gain or (loss) on sale of subsidiary - - - Total $ (8,386 ) $ 4,998 $ (769 ) $ (1,930 ) $ - $ -
Schedule of Fair Values of Qualifying and Non-Qualifying Instruments Used in Hedging Transactions	The fair values of qualifying and non-qualifying instruments used in hedging transactions as of May 31, 2020 and May 31, 2019 are as follows: (In thousands) Fair Value Derivatives Designated as Hedging Instruments Balance Sheet Location May 31, 2020 May 31, 2019 Assets: Interest Rate Swap (Fair Value) Other Current Assets $ - $ 513 Cross Currency Swap (Net Investment) Other Current Assets 5,352 2,482 Cross Currency Swap (Cash Flow) Other Current Assets 750 - Cross Currency Swap (Net Investment) Other Assets (Long-Term) 12,409 6,163 Liabilities: Interest Rate Swap (Fair Value) Other Accrued Liabilities - 230 Interest Rate Swap (Cash Flow) Other Accrued Liabilities 2,981 - Cross Currency Swap (Net Investment) Other Accrued Liabilities 294 - Cross Currency Swap (Net Investment) Other Long-Term Liabilities 18,204 4,276 Cross Currency Swap (Cash Flow) Other Long-Term Liabilities 3,608 - Interest Rate Swap (Cash Flow) Other Long-Term Liabilities 5,187 - (In thousands) Fair Value Derivatives Not Designated as Hedging Instruments Balance Sheet Location May 31, 2020 May 31, 2019 Assets: Foreign Currency Exchange Other Current Assets $ - $ 51 Liabilities: Foreign Currency Exchange Other Accrued Liabilities 53 -

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	May 31, 2020
Debt Disclosure [Abstract]
Description of Long-Term Debt	A description of long-term debt follows: May 31, 2020 2019 (In thousands) Revolving credit facility with a syndicate of banks, through October 31, 2023(1) $ 419,317 $ 336,442 Accounts receivable securitization program with two banks, through May 21, 2021 (2) 79,756 99,887 Unsecured 6.125% senior notes due October 15, 2019(3) - 450,454 Unsecured 3.45% senior notes due November 15, 2022 (8) 300,615 299,257 Unsecured $100M Term Loan due February 21, 2023 99,810 Unsecured $300M Term Loan due February 21, 2023 299,431 Unsecured 3.75% notes due March 15, 2027 (4) 397,058 396,586 Unsecured 4.55% senior notes due March 1, 2029(5) 346,514 346,006 Unsecured 5.25% notes due June 1, 2045(6) 298,668 298,589 Unsecured 4.25% notes due January 15, 2048 (7) 296,590 296,467 Other obligations, including finance leases and unsecured notes payable at various rates of interest due in installments through 2021 1,421 2,220 2,539,180 2,525,908 Less: current portion 80,890 552,446 Total Long-Term Debt, Less Current Maturities $ 2,458,290 $ 1,973,462 (1) Interest at May 31, 2020 was tied to LIBOR and averaged 1.5505% for USD denominated debt ($218,281), 1.4650% for AUD denominated debt ($37,199) and 1.3750% on EUR denominated debt ($167,537). Interest at May 31, 2019 was tied to LIBOR and averaged 3.6805% for USD denominated debt ($14,268), 2.69% for AUD denominated debt ($34,558), 3.23% on CAD denominated debt ($131,738) and 1.25% on EUR denominated debt ($159,745). At May 31, 2020 and 2019, the revolving credit facility is adjusted for debt issuance costs, net of amortization, for approximately $3.7 million and $3.9 million, respectively. (2) At May 31, 2020 and 2019, the accounts receivable securitization program is adjusted for debt issuance cost, net of amortization, for approximately $ 0.2 million and $ 0.1 million, respectively. (3) Includes the combination of the October 2009 initial issuance of $300.0 million aggregate principal amount and the May 2011 issuance of an additional $150.0 million aggregate principal amount of these notes. The effective interest rate on the notes issued in October 2009, including the amortization of the discount, was 6.139%. The additional $150.0 million aggregate principal amount of the notes due 2019 issued in May 2011 was adjusted for the unamortized premium received at issuance, which approximated $0.7 million at May 31, 2019. The premium effectively increased the proceeds from the financing. The effective interest rate on the $150.0 million notes issued in May 2011 is 4.934%. At May 31, 2019, the notes were adjusted for debt issuance costs, net of amortization, for approximately $0.2 million. During the second quarter of fiscal 2020, we used funds from our revolving credit facility to pay off our $450 million, 6.125% notes due in October 2019. (4) The $400.0 million face amount of the notes due 2027 is adjusted for the amortization of the original issue discount, which approximated $0.3 million and $0.4 million at May 31, 2020 and 2019, respectively. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, is 3.767%. At May 31, 2020 and 2019, the notes are adjusted for debt issuance costs, net of amortization, for approximately $2.6 million and $3.0 million, respectively. (5) The $350.0 million aggregate principal amount of the notes due 2029 is adjusted for the amortization of the original issue discount, which approximated $0.5 million at May 31, 2020 and 2019. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, was 4.568%. At May 31, 2020 and 2019, the notes were adjusted for debt issuance costs, net of amortization, for approximately $3.0 million and $3.5 million, respectively. (6) The $250.0 million face amount of the notes due 2045 is adjusted for the amortization of the original issue discount, which approximated $1.4 million at May 31, 2020 and 2019. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, is 5.29%. In March 2017, as a further issuance of the 5.25% notes due 2045, we closed an offering of $50.0 million aggregate principal, which is adjusted for the unamortized premium received at issuance, which approximated $2.9 million and $3.0 million at May 31, 2020 and 2019, respectively. The premium effectively increased the proceeds from the financing. The effective interest rate on the $50.0 million notes issued March 2017 is 4.839%. At May 31, 2020 and 2019, the notes are adjusted for debt issuance costs, net of amortization, for approximately $2.9 million and $3.0 million, respectively. (7) The $300.0 million face amount of the notes due 2048 is adjusted for the debt issuance cost, net of amortization, which approximated $3.4 million and $3.5 million at May 31, 2020 and 2019, respectively. The effective interest rate on the notes is 4.25%. (8) The $300.0 million face amount of the notes due 2022 is adjusted for the amortization of the original issue discount and mark-to-market derivative asset of approximated $0.1 million and ($1.3 million) at May 31, 2020 and approximated $0.1 million and ($0.3 million) at May 31, 2019, respectively. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, is 3.465%. At May 31, 2020 and 2019, the notes are reduced by debt issuance costs, net of amortization, for approximately $0.6 million and $0.9 million, respectively.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	May 31, 2020
Income Tax Disclosure [Abstract]
Income before Income Taxes	Income before income taxes as shown in the Consolidated Statements of Income is summarized below for the periods indicated. Year Ended May 31, 2020 2019 2018 (In thousands) United States $ 317,290 $ 215,201 $ 228,976 Foreign 90,474 124,644 188,072 Income Before Income Taxes $ 407,764 $ 339,845 $ 417,048
Provision (Benefit) for Income Tax	Provision (benefit) for income taxes consists of the following for the periods indicated: Year Ended May 31, 2020 2019 2018 (In thousands) Current: U.S. federal $ 65,195 $ 20,388 $ 27,206 State and local 17,743 8,623 8,617 Foreign 31,894 37,713 52,658 Total Current 114,832 66,724 88,481 Deferred: U.S. federal (19,212 ) 15,298 (8,054 ) State and local (3,031 ) 1,414 4,832 Foreign 10,093 (11,278 ) (7,468 ) Total Deferred (12,150 ) 5,434 (10,690 ) Provision for Income Taxes $ 102,682 $ 72,158 $ 77,791
Significant Components of Deferred Income Tax Assets and Liabilities	The significant components of deferred income tax assets and liabilities as of May 31, 2020 and 2019 were as follows: 2020 2019 (In thousands) Deferred income tax assets related to: Inventories $ 12,341 $ 8,970 Allowance for losses 4,294 7,524 Accrued compensation and benefits 14,686 14,364 Accrued other expenses 15,107 17,036 Other long-term liabilities 22,030 15,947 Credit and net operating and capital loss carryforwards 65,994 63,395 Net unrealized loss on securities 16,892 12,391 Pension and other postretirement benefits 76,147 42,991 Total Deferred Income Tax Assets 227,491 182,618 Less: valuation allowances (66,855 ) (55,274 ) Net Deferred Income Tax Assets 160,636 127,344 Deferred income tax (liabilities) related to: Depreciation (70,588 ) (72,387 ) Amortization of intangibles (109,926 ) (116,097 ) Unremitted foreign earnings (8,781 ) (18,795 ) Total Deferred Income Tax (Liabilities) (189,295 ) (207,279 ) Deferred Income Tax Assets (Liabilities), Net $ (28,659 ) $ (79,935 )
Reconciliation of Income Tax Expense (Benefit) Computed by Applying U.S. Statutory Federal Income Tax Rate against Income (Loss) before Income Taxes to Provision (Benefit) for Income Taxes	The following table reconciles income tax expense (benefit) computed by applying the U.S. statutory federal income tax rate against income (loss) before income taxes to the provision (benefit) for income taxes: Year Ended May 31, 2020 2019 2018 (In thousands, except percentages) Income tax expense at the U.S. statutory federal income tax rate $ 85,630 $ 71,367 $ 121,812 Impact of foreign operations 3,433 (1,571 ) (16,276 ) State and local income taxes, net 11,651 7,224 9,520 Impact of GILTI provisions 3,051 5,772 Domestic manufacturing deduction - (4,839 ) Nondeductible business expense 2,005 2,259 2,473 Valuation allowance 14,008 7,021 (5,235 ) Deferred tax liability for unremitted foreign earnings (5,527 ) - (77,970 ) Changes in unrecognized tax benefits 1,292 (8,480 ) Other (3,351 ) 1,195 737 FY19 GILTI impact of issued regulations (4,348 ) Equity-based compensation (5,162 ) (4,496 ) (4,652 ) Transition tax liability (1,868 ) 67,899 Remeasurement of U.S. deferred income taxes (6,265 ) (15,678 ) Provision for Income Tax Expense $ 102,682 $ 72,158 $ 77,791 Effective Income Tax Rate 25.2 % 21.2 % 18.7 %
Activity Related to Unrecognized Tax Benefits	Uncertain income tax positions are accounted for in accordance with ASC 740. The following table summarizes the activity related to unrecognized tax benefits: (In millions) 2020 2019 2018 Balance at June 1 $ 8.1 $ 14.1 $ 13.2 Additions based on tax positions related to current year - 0.1 5.1 Additions for tax positions of prior years 2.0 2.0 - Reductions for tax positions of prior years (0.9 ) (7.9 ) (4.5 ) Foreign currency translation (0.2 ) (0.2 ) 0.3 Balance at May 31 $ 9.0 $ 8.1 $ 14.1

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	May 31, 2020
Stock-Based Compensation Expense Included in Consolidated Statements of Income	The following table represents total stock-based compensation expense included in our Consolidated Statements of Income: Year Ended May 31, 2020 2019 2018 (In thousands) Stock-based compensation expense, included in SG&A $ 19,789 $ 31,154 $ 25,440 Stock-based compensation expense, included in restructuring expense 116 4,283 2,136 Total stock-based compensation cost 19,905 35,437 27,576 Income tax (benefit) (2,784 ) (6,937 ) (7,178 ) Total stock-based compensation cost, net of tax $ 17,121 $ 28,500 $ 20,398
Summary of Weighted-Average Assumptions Related to SARs Grants	The following is a summary of our weighted-average assumptions related to SARs grants made during the last three fiscal years: Year Ended May 31, 2020 2019 2018 Risk-free interest rate 1.9 % 2.9 % 2.2 % Expected life of option 6.5 yrs 6.5 yrs 7.0 yrs Expected dividend yield 2.3 % 2.1 % 2.2 % Expected volatility rate 22.4 % 25.2 % 26.2 %
Summary of Option and Share-Based Payment Activity	The following table summarizes option and share-based payment activity (including SARs) under these plans during the fiscal year ended May 31, 2020: 2020 Share-Based Payments Weighted Average Exercise Price Number of Shares Under Option (Shares in thousands) Balance at June 1, 2019 $ 46.44 3,097 Options granted 62.17 340 Options exercised 43.10 (955 ) Balance at May 31, 2020 49.88 2,482 Exercisable at May 31, 2020 $ 44.15 1,520 SARs 2020 2019 2018 (In millions, except per share amounts) Weighted-average grant-date fair value per SAR $ 11.59 $ 14.08 $ 12.90 Intrinsic value of options exercised $ 9.62 $ 9.29 $ 11.10 Tax benefit from options exercised $ 5.94 $ 3.21 $ 3.40 Fair value of SARS vested $ 12.27 $ 9.30 $ 6.50
Directors Equity Incentive Plan 2003
Summary of Share-Based Performance Earned Restricted Stock Activity and Restricted Stock Units	The following table summarizes the share-based activity under the 2003 Plan during fiscal 2019: Weighted-Average Grant-Date Fair Value 2020 (Shares in thousands) Balance at June 1, 2019 $ 54.56 55 Shares granted to directors 67.26 23 Shares vested 50.61 (16 ) Balance at May 31, 2020 $ 60.25 62
2007 Plan and 2014 Omnibus Plan
Summary of Share-Based Performance Earned Restricted Stock Activity and Restricted Stock Units	The following table sets forth such awards for the year ended May 31, 2020: Weighted-Average Grant-Date Fair Value 2020 (Shares in thousands) Balance at June 1, 2019 $ 31.73 432 Shares granted 62.17 30 Shares forfeited - - Shares exercised 33.96 (16 ) Balance at May 31, 2020 $ 33.82 446
Performance Earned Restricted Stock Awards
Summary of Share-Based Performance Earned Restricted Stock Activity and Restricted Stock Units	The following table summarizes the share-based performance-earned restricted stock (“PERS”) and performance stock units (“PSUs”) activity during the fiscal year ended May 31, 2020: Weighted-Average Grant-Date Fair Value 2020 (Shares in thousands) Balance at June 1, 2019 $ 54.90 829 Shares granted 63.52 405 Shares forfeited 55.80 (8 ) Shares vested 51.11 (361 ) Balance at May 31, 2020 $ 60.51 865
Nonvested Shares
Summary of Share-Based Performance Earned Restricted Stock Activity and Restricted Stock Units	The following table summarizes the activity for all nonvested restricted shares during the year ended May 31, 2020: Weighted-Average Grant-Date Fair Number of (Shares in thousands) Value Shares Balance at June 1, 2019 $ 52.35 1,091 Granted 63.62 458 Vested 49.42 (421 ) Forfeited 55.80 (8 ) Balance at May 31, 2020 $ 58.03 1,120

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	May 31, 2020
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated other comprehensive income (loss) consists of the following components: Pension And Other Postretirement Unrealized Unrealized Foreign Benefit Gain Gain (Loss) Currency Liability (Loss) On On Translation Adjustments, Derivatives, Securities, (In thousands) Adjustments Net of Tax Net of Tax Net of Tax Total Balance at June 1, 2017 $ (308,415 ) $ (166,724 ) $ 16 $ 1,137 $ (473,986 ) Reclassification adjustments for gains included in net income, net of taxes of $591 - (1,244 ) (1,244 ) Other comprehensive income 10,989 11,375 (359 ) (2,050 ) 19,955 Deferred taxes (2,587 ) (2,146 ) 212 748 (3,773 ) Balance at May 31, 2018 (300,013 ) (157,495 ) (131 ) (1,409 ) (459,048 ) Reclassification adjustments for gains included in net income, net of taxes of $151 1,777 1,777 Other comprehensive income (73,660 ) (70,785 ) 4,713 307 (139,425 ) Deferred taxes 3,178 16,635 (203 ) (542 ) 19,068 Balance at May 31, 2019 (370,495 ) (211,645 ) 4,379 133 (577,628 ) Reclassification adjustments for losses included in net income, net of taxes of $0 - - Other comprehensive income (71,820 ) (86,347 ) (6,315 ) 1,210 (163,272 ) Deferred taxes 1,583 20,275 1,865 (320 ) 23,403 Balance at May 31, 2020 $ (440,732 ) $ (277,717 ) $ (71 ) $ 1,023 $ (717,497 )

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	May 31, 2020
Earnings Per Share [Abstract]
Reconciliation of Numerator and Denominator of Basic and Diluted Earnings Per Share	The following table sets forth the reconciliation of the numerator and denominator of basic and diluted earnings per share for the years ended May 31, 2020, 2019 and 2018: Year Ended May 31, 2020 2019 2018 (In thousands, except per share amounts) Numerator for earnings per share: Net income attributable to RPM International Inc. stockholders $ 304,385 $ 266,558 $ 337,770 Less: Allocation of earnings and dividends to participating securities (1,956 ) (1,514 ) (3,858 ) Net income available to common shareholders - basic 302,429 265,044 333,912 Reverse: Allocation of earnings and dividends to participating securities 1,956 1,514 3,858 Add: Income effect of contingently issuable shares - 3,655 5,673 Net income available to common shareholders - diluted $ 304,385 $ 270,213 $ 343,443 Denominator for basic and diluted earnings per share: Basic weighted average common shares 128,468 130,552 131,179 Average diluted options 1,506 1,838 2,064 Net issuable common share equivalents (1) - 1,943 3,928 Total shares for diluted earnings per share (2) 129,974 134,333 137,171 Earnings Per Share of Common Stock Attributable to RPM International Inc. Stockholders: Basic Earnings Per Share of Common Stock $ 2.35 $ 2.03 $ 2.55 Method used to calculate basic earnings per share Two-Class Two-Class Two-Class Diluted Earnings Per Share of Common Stock $ 2.34 $ 2.01 $ 2.50 Method used to calculate diluted earnings per share Treasury Treasury Treasury (1) Represents the number of shares that would be issued if our contingently convertible notes had been converted. We included these shares in the calculation of diluted EPS as the conversion of the notes were eligible to be settled, at our election, in cash, shares of our common stock, or a combination of cash and shares of our common stock. On November 27, 2018, we redeemed all of our 2.25% convertible senior notes due 2020, primarily for cash, but also issued 598,601 shares of our common stock in the transaction (2) For the years ended May 31, 2020, 2019 and 2018, approximately 340,000, 862,500 and 799,362 shares of stock, respectively, granted under stock-based compensation plans were excluded from the calculation of diluted EPS, as the effect would have been anti-dilutive.

Leases (Tables)

Leases (Tables)	12 Months Ended
	May 31, 2020
Leases [Abstract]
Schedule of Future Undiscounted Cash Flows and Reconciliation to Lease Liabilities	The following represents our future undiscounted cash flows for each of the next five years and thereafter and reconciliation to the lease liabilities, as of May 31, 2020: (In thousands) Year ending May 31, Operating Leases 2021 $ 61,328 2022 50,452 2023 38,921 2024 31,572 2025 27,771 Thereafter 144,982 Total lease payments $ 355,026 Less imputed interest 57,746 Total present value of lease liabilities $ 297,280
Future Minimum Lease Commitments under Non-Cancelable Lease Agreements	Following is a summary of our future minimum lease commitments, as determined under ASC 840, for all non-cancelable lease agreements, for each of the next five years and in the aggregate, as of May 31, 2019: May 31, (In thousands) 2020 $ 59,163 2021 49,731 2022 40,339 2023 32,798 2024 27,716 Thereafter 119,607 Total Minimum Lease Commitments $ 329,354

Pension Plans (Tables)

Pension Plans (Tables) - Pension Benefits	12 Months Ended
	May 31, 2020
Components of Net Periodic Pension and Postretirement Costs	Net periodic pension cost consisted of the following for the year ended May 31: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2018 2020 2019 2018 Service cost $ 39,425 $ 37,528 $ 37,859 $ 5,400 $ 4,693 $ 4,620 Interest cost 20,415 21,987 17,518 4,842 5,420 5,025 Expected return on plan assets (34,291 ) (33,867 ) (32,342 ) (7,118 ) (7,907 ) (8,270 ) Amortization of: Prior service cost 9 118 117 (36 ) (30 ) (31 ) Net actuarial losses recognized 18,516 13,087 14,470 2,029 1,229 1,758 Curtailment/settlement losses - - - 86 89 128 Net Pension Cost $ 44,074 $ 38,853 $ 37,622 $ 5,203 $ 3,494 $ 3,230
Changes in Benefit Obligations and Plan Assets	The changes in benefit obligations and plan assets, as well as the funded status of our pension plans at May 31, 2020 and 2019, were as follows: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Benefit obligation at beginning of year $ 660,277 $ 617,255 $ 205,967 $ 194,149 Service cost 39,425 37,528 5,400 4,693 Interest cost 20,415 21,987 4,842 5,420 Benefits paid (41,186 ) (45,917 ) (6,269 ) (7,488 ) Participant contributions - - 1,106 1,003 Plan amendments - 11 (893 ) (33 ) Plan combination - - 922 - Plan settlements/curtailments - - (288 ) (607 ) Actuarial losses 83,808 29,413 2,718 17,286 Premiums paid - - (99 ) (97 ) Currency exchange rate changes - - (3,128 ) (8,359 ) Benefit Obligation at End of Year $ 762,739 $ 660,277 $ 210,278 $ 205,967 Fair value of plan assets at beginning of year $ 496,865 $ 487,233 $ 187,112 $ 188,960 Actual return on plan assets 8,689 (2,272 ) 9,899 6,737 Employer contributions 52,182 57,821 6,331 6,770 Participant contributions - - 1,106 1,003 Benefits paid (41,186 ) (45,917 ) (6,269 ) (7,488 ) Plan combination - - 182 - Premiums paid - - (99 ) (97 ) Plan settlements/curtailments - - (281 ) (580 ) Currency exchange rate changes - - (3,107 ) (8,193 ) Fair Value of Plan Assets at End of Year $ 516,550 $ 496,865 $ 194,874 $ 187,112 (Deficit) of plan assets versus benefit obligations at end of year $ (246,189 ) $ (163,412 ) $ (15,404 ) $ (18,855 ) Net Amount Recognized $ (246,189 ) $ (163,412 ) $ (15,404 ) $ (18,855 ) Accumulated Benefit Obligation $ 662,197 $ 553,392 $ 197,167 $ 192,533
Amounts Recognized in Consolidated Balance Sheet	Amounts recognized in the Consolidated Balance Sheets for the years ended May 31, 2020 and 2019 are as follows: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Noncurrent assets $ - $ - $ 13,395 $ 9,047 Current liabilities (8 ) (8 ) (547 ) (435 ) Noncurrent liabilities (246,181 ) (163,404 ) (28,252 ) (27,467 ) Net Amount Recognized $ (246,189 ) $ (163,412 ) $ (15,404 ) $ (18,855 )
Relationship between Plans Benefit Obligations and Assets	The following table summarizes the relationship between our plans' benefit obligations and assets: U.S. Plans 2020 2019 (In thousands) Benefit Obligation Plan Assets Benefit Obligation Plan Assets Plans with projected benefit obligations in excess of plan assets $ 762,739 $ 516,550 $ 660,277 $ 496,865 Plans with accumulated benefit obligations in excess of plan assets 662,197 516,550 553,392 496,865 Plans with assets in excess of projected benefit obligations - - - - Plans with assets in excess of accumulated benefit obligations - - - - Non-U.S. Plans 2020 2019 (In thousands) Benefit Obligation Plan Assets Benefit Obligation Plan Assets Plans with projected benefit obligations in excess of plan assets $ 163,589 $ 134,791 $ 162,824 $ 134,921 Plans with accumulated benefit obligations in excess of plan assets 150,478 134,598 149,390 134,921 Plans with assets in excess of projected benefit obligations 46,689 60,083 43,143 52,191 Plans with assets in excess of accumulated benefit obligations 46,689 60,276 43,143 52,191
Pretax Net Actuarial Loss and Prior Service (Costs) Recognized in Accumulated Other Comprehensive Income (Loss) not Affecting Retained Earnings	The following table presents the pretax net actuarial loss and prior service (costs) recognized in accumulated other comprehensive income (loss) not affecting retained earnings: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Net actuarial loss $ (341,179 ) $ (250,286 ) $ (48,090 ) $ (51,184 ) Prior service (costs) credits (20 ) (28 ) 1,098 224 Total recognized in accumulated other comprehensive income not affecting retained earnings $ (341,199 ) $ (250,314 ) $ (46,992 ) $ (50,960 )
Changes Recognized in Other Comprehensive Income	The following table includes the changes recognized in other comprehensive income: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Changes in plan assets and benefit obligations recognized in other comprehensive income: Prior service cost $ - $ 11 $ (893 ) $ (33 ) Net loss (gain) arising during the year 109,409 65,552 (70 ) 18,456 Effect of exchange rates on amounts included in AOCI - - (922 ) (1,593 ) Amounts recognized as a component of net periodic benefit cost: Amortization or curtailment recognition of prior service (cost) benefit (9 ) (118 ) 36 30 Amortization or settlement recognition of net (loss) (18,516 ) (13,087 ) (2,115 ) (1,345 ) Total recognized in other comprehensive loss (income) $ 90,884 $ 52,358 $ (3,964 ) $ 15,515
Amounts in Accumulated Other Comprehensive Income (Loss) that have not yet been Recognized in Net Periodic Pension Cost, but will be Recognized in Consolidated Statements of Income	The following table presents the amounts in accumulated other comprehensive income (loss) as of May 31, 2020 that have not yet been recognized in net periodic pension cost, but are expected to be recognized in our Consolidated Statements of Income during the fiscal year ending May 31, 2021: (In thousands) U.S. Plans Non-U.S. Plans Net actuarial loss $ (27,457 ) $ (2,106 ) Prior service (cost) credit $ (8 ) $ 141
Weighted-Average Assumptions used to Determine Benefit Obligations and Net Periodic and Postretirement Costs	The following weighted-average assumptions were used to determine our year-end benefit obligations and net periodic pension cost under the plans: U.S. Plans Non-U.S. Plans Year-End Benefit Obligations 2020 2019 2020 2019 Discount rate 2.77 % 3.64 % 2.49 % 2.61 % Rate of compensation increase 3.19 % 3.80 % 2.86 % 2.86 % U.S. Plans Non-U.S. Plans Net Periodic Pension Cost 2020 2019 2018 2020 2019 2018 Discount rate 3.65 % 4.12 % 3.81 % 2.61 % 3.09 % 2.79 % Expected return on plan assets 7.40 % 7.40 % 7.89 % 3.91 % 4.30 % 4.37 % Rate of compensation increase 3.80 % 3.80 % 3.80 % 2.86 % 2.85 % 3.00 %
Weighted-Average Actual and Target Allocation of Plan Assets	The following tables illustrate the weighted-average actual and target allocation of plan assets: U.S. Plans Target Allocation Actual Asset Allocation (Dollars in millions) as of May 31, 2020 2020 2019 Equity securities 55 % $ 261.0 $ 295.1 Fixed income securities 25 % 106.4 83.8 Multi-class 20 % 118.2 78.1 Cash (1) 30.8 39.7 Other 0.2 0.2 Total assets 100 % $ 516.6 $ 496.9 Non-U.S. Plans Target Allocation Actual Asset Allocation (Dollars in millions) as of May 31, 2020 2020 2019 Equity securities 33 % $ 79.3 $ 79.9 Fixed income securities 48 % 88.2 79.3 Cash 0.1 0.1 Property and other 19 % 27.3 27.8 Total assets 100 % $ 194.9 $ 187.1 (1) The larger than target cash position at May 31, 2020 results from our February 2020 contribution to the RPM International Inc. Retirement Plan because of our plans to invest the February contribution over a period of time, due to dollar cost averaging.
Pension Plan Assets Categorized using Fair Value Hierarchy	The following tables present our pension plan assets as categorized using the fair value hierarchy at May 31, 2020 and 2019: U.S. Plans (In thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value at May 31, 2020 U.S. Treasury and other government $ - $ 12,973 $ - $ 12,973 State and municipal bonds - 508 - 508 Foreign bonds - 715 - 715 Mortgage-backed securities - 23,824 - 23,824 Corporate bonds - 34,317 - 34,317 Stocks - large cap 19,589 - - 19,589 Mutual funds - equity - 241,426 - 241,426 Mutual funds - multi-class - 118,205 - 118,205 Mutual funds - fixed - 33,993 - 33,993 Cash and cash equivalents 30,830 - - 30,830 Limited partnerships - - 170 170 Total $ 50,419 $ 465,961 $ 170 $ 516,550 Non-U.S. Plans (In thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value at May 31, 2020 Pooled equities $ - $ 78,472 $ - $ 78,472 Pooled fixed income - 87,610 - 87,610 Foreign bonds - 603 - 603 Insurance contracts - - 27,267 27,267 Mutual funds - 855 - 855 Cash and cash equivalents 67 - - 67 Total $ 67 $ 167,540 $ 27,267 $ 194,874 U.S. Plans (In thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value at May 31, 2019 U.S. Treasury and other government $ - $ 13,854 $ - $ 13,854 State and municipal bonds - 386 - 386 Foreign bonds - 1,031 - 1,031 Mortgage-backed securities - 20,075 - 20,075 Corporate bonds - 26,204 - 26,204 Stocks - mid cap 13,392 - - 13,392 Stocks - small cap 15,720 - - 15,720 Mutual funds - equity - 265,969 - 265,969 Mutual funds - multi-class - 78,143 - 78,143 Mutual funds - fixed - 22,215 - 22,215 Cash and cash equivalents 39,704 - - 39,704 Limited partnerships - - 172 172 Total $ 68,816 $ 427,877 $ 172 $ 496,865 Non-U.S. Plans (In thousands) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fair Value at May 31, 2019 Pooled equities $ - $ 78,733 $ - $ 78,733 Pooled fixed income - 79,061 - 79,061 Foreign bonds - 227 - 227 Insurance contracts - - 27,843 27,843 Mutual funds - 1,125 - 1,125 Cash and cash equivalents 123 - - 123 Total $ 123 $ 159,146 $ 27,843 $ 187,112
Activity that Occurred for Level Three Assets	The following table includes the activity that occurred during the years ended May 31, 2020 and 2019 for our Level 3 assets: Actual Return on Plan Assets For: Balance at Assets Still Held Assets Sold Purchases, Sales and Balance at (In thousands) Beginning of Period at Reporting Date During Year Settlements, net (1) End of Period Year ended May 31, 2020 $ 28,015 (691 ) - 113 $ 27,437 Year ended May 31, 2019 28,448 1,228 - (1,661 ) 28,015 (1) Includes the impact of exchange rate changes during the year.

Postretirement Benefits (Tables

Postretirement Benefits (Tables) - Postretirement Benefits - Unfunded-Health-Care-Benefit Plans	12 Months Ended
	May 31, 2020
Components of Net Periodic Pension and Postretirement Costs	The following table illustrates the effect on operations of these plans for the three years ended May 31, 2020: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2018 2020 2019 2018 Service cost - benefits earned during the period $ - $ - $ - $ 1,661 $ 1,507 $ 1,307 Interest cost on the accumulated obligation 149 192 173 1,089 1,122 939 Amortization of: Prior service (credit) (219 ) (219 ) (220 ) - - - Net actuarial (gains) losses (66 ) (26 ) 24 611 442 332 Net Postretirement Benefit (Income) Cost $ (136 ) $ (53 ) $ (23 ) $ 3,361 $ 3,071 $ 2,578
Changes in Benefit Obligations	The changes in benefit obligations of the plans at May 31, 2020 and 2019 were as follows: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Accumulated postretirement benefit obligation at beginning of year $ 4,990 $ 5,368 $ 37,663 $ 33,281 Service cost - - 1,661 1,507 Interest cost 149 192 1,089 1,122 Benefit payments (1,659 ) (287 ) (639 ) (664 ) Actuarial (gains) losses 702 (283 ) (683 ) 3,801 Currency exchange rate changes - - (702 ) (1,384 ) Accumulated and accrued postretirement benefit obligation at end of year $ 4,182 $ 4,990 $ 38,389 $ 37,663
Amounts Recognized in Consolidated Balance Sheet	Amounts recognized in the Consolidated Balance Sheets for the years ended May 31, 2020 and 2019 are as follows: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Current liabilities $ (385 ) $ (423 ) $ (805 ) $ (741 ) Noncurrent liabilities (3,797 ) (4,567 ) (37,584 ) (36,922 ) Net Amount Recognized $ (4,182 ) $ (4,990 ) $ (38,389 ) $ (37,663 )
Pretax Net Actuarial Loss and Prior Service (Costs) Recognized in Accumulated Other Comprehensive Income (Loss) not Affecting Retained Earnings	The following table presents the pretax net actuarial gain (loss) and prior service credits recognized in accumulated other comprehensive income (loss) not affecting retained earnings: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Net actuarial gain (loss) $ (386 ) $ 381 $ (11,331 ) $ (12,891 ) Prior service credits 448 667 - - Total recognized in accumulated other comprehensive income not affecting retained earnings $ 62 $ 1,048 $ (11,331 ) $ (12,891 )
Changes Recognized in Other Comprehensive Income	The following table includes the changes recognized in other comprehensive income: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 Changes in plan assets and benefit obligations recognized in other comprehensive income: Prior service cost $ - $ - $ - $ - Net loss (gain) arising during the year 702 (283 ) (683 ) 3,801 Effect of exchange rates on amounts included in AOCI - - (266 ) (419 ) Amounts recognized as a component of net periodic benefit cost: Amortization or curtailment recognition of prior service credit 219 219 - - Amortization or settlement recognition of net gain (loss) 66 26 (611 ) (442 ) Total recognized in other comprehensive loss (income) $ 987 $ (38 ) $ (1,560 ) $ 2,940
Weighted-Average Assumptions used to Determine Benefit Obligations and Net Periodic and Postretirement Costs	The following weighted-average assumptions were used to determine our year-end benefit obligations and net periodic postretirement benefit costs under the plans: U.S. Plans Non-U.S. Plans Year-End Benefit Obligations 2020 2019 2020 2019 Discount rate 2.44 % 3.44 % 3.32 % 3.22 % Current healthcare cost trend rate 6.68 % 7.29 % 5.73 % 5.77 % Ultimate healthcare cost trend rate 4.36 % 4.36 % 3.70 % 3.70 % Year ultimate healthcare cost trend rate will be realized 2037 2037 2040 2040 U.S. Plans Non-U.S. Plans Net Periodic Postretirement Cost 2020 2019 2018 2020 2019 2018 Discount rate 3.44 % 4.03 % 3.61 % 3.22 % 3.70 % 3.61 % Healthcare cost trend rate 7.29 % 7.86 % 14.75 % 5.77 % 6.02 % 5.85 % Ultimate healthcare cost trend rate 4.36 % 4.36 % 4.36 % 3.70 % 4.20 % 4.20 % Year ultimate healthcare cost trend rate will be realized 2037 2037 2037 2040 2032 2030
Increasing or Decreasing Current Healthcare Cost Trend Rates by One Percentage would affect Accumulated Postretirement Benefit Obligation and Net Postretirement Expense	We utilize a sensitivity analysis to measure the potential impact of changes in our healthcare cost trend rate on our Consolidated Financial Statements. Increasing or decreasing current healthcare cost trend rates by 1% would affect our accumulated postretirement benefit obligation and net postretirement expense by the following amounts for the years ended May 31, 2020 and 2019: U.S. Plans Non-U.S. Plans (In thousands) 2020 2019 2020 2019 1% Increase in Healthcare Cost Trend Rate Accumulated benefit obligation $ 130 $ 124 $ 7,452 $ 8,300 Postretirement cost 4 7 814 731 1% Decrease in Healthcare Cost Trend Rate Accumulated benefit obligation $ (117 ) $ (112 ) $ (5,843 ) $ (6,390 ) Postretirement cost (3 ) (6 ) (595 ) (539 )

Contingencies and Other Accru_2

Contingencies and Other Accrued Losses (Tables)	12 Months Ended
	May 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Accrued Loss Reserves	Accrued loss reserves consist of the following: May 31, 2020 2019 (In thousands) Accrued product liability reserves $ 10,458 $ 11,739 Accrued warranty reserves 7,593 7,013 Accrued environmental reserves 1,970 1,147 Total Accrued Loss Reserves - Current $ 20,021 $ 19,899 Accrued product liability reserves - noncurrent $ 27,016 $ 29,942 Accrued warranty liability - noncurrent 3,513 3,401 Accrued environmental reserves - noncurrent 4,125 4,211 Total Accrued Loss Reserves - Noncurrent $ 34,654 $ 37,554
Changes in Accrued Warranty Balances	The following table includes the changes in our accrued warranty balances: Year Ended May 31, 2020 2019 2018 (In thousands) Beginning Balance $ 10,414 $ 11,721 $ 19,149 Deductions (1) (20,762 ) (22,262 ) (26,199 ) Provision charged to expense 21,454 20,955 17,924 Acquisitions 847 Ending Balance $ 11,106 $ 10,414 $ 11,721 (1) Primarily claims paid during the year.

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	May 31, 2020
Revenue From Contract With Customer [Abstract]
Accounts Receivable Net of Allowances and Net Contract Assets (Liabilities)	Accounts receivable, net of allowances, and net contract assets (liabilities) consisted of the following: Year Ended May 31, 2020 2019 $ Change % Change (In thousands, except percents) Accounts receivable, less allowance $ 1,137,957 $ 1,232,350 $ (94,393 ) -7.7 % Contract assets $ 25,249 $ 21,628 $ 3,621 16.7 % Contract liabilities - short-term (25,288 ) (25,896 ) 608 -2.3 % Net Contract Liabilities $ (39 ) $ (4,268 ) $ 4,229 -99.1 %

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	May 31, 2020
Segment Reporting [Abstract]
Results of Reportable Segments	The following tables reflect the results of our reportable segments consistent with our management philosophy, and represent the information we utilize, in conjunction with various strategic, operational and other financial performance criteria, in evaluating the performance of our portfolio of businesses. Year Ended May 31, 2020 2019 2018 (In thousands) Net Sales CPG $ 1,880,105 $ 1,899,744 $ 1,837,280 PCG 1,080,701 1,136,119 1,088,606 Consumer 1,945,220 1,858,453 1,722,220 SPG 600,968 670,235 673,537 Total $ 5,506,994 $ 5,564,551 $ 5,321,643 Income (Loss) Before Income Taxes CPG $ 209,663 $ 178,823 $ 174,032 PCG 102,345 77,388 112,614 Consumer 198,024 217,448 171,872 SPG 57,933 86,018 107,455 Corporate/Other (160,201 ) (219,832 ) (148,925 ) Total $ 407,764 $ 339,845 $ 417,048 Identifiable Assets CPG $ 1,622,632 $ 1,573,329 $ 1,531,485 PCG 925,569 951,644 974,104 Consumer 2,067,017 1,953,279 1,833,372 SPG 728,449 689,133 684,254 Corporate/Other 287,287 273,970 248,607 Total $ 5,630,954 $ 5,441,355 $ 5,271,822 Capital Expenditures CPG $ 63,393 $ 40,119 $ 39,368 PCG 23,868 22,158 22,102 Consumer 47,331 45,039 38,341 SPG 21,610 28,006 14,213 Corporate/Other 1,077 1,435 595 Total $ 157,279 $ 136,757 $ 114,619 Depreciation and Amortization CPG $ 46,491 $ 44,150 $ 41,538 PCG 23,850 27,116 21,394 Consumer 56,570 40,231 36,744 SPG 24,111 25,199 23,085 Corporate/Other 5,820 5,046 5,738 Total $ 156,842 $ 141,742 $ 128,499
Net Sales and Long Lived Assets by Regions	Year Ended May 31, 2020 CPG Segment PCG Segment Consumer Segment SPG Segment Consolidated (In thousands) Net Sales (based on shipping location) (a) United States $ 1,068,552 $ 656,162 $ 1,573,966 $ 489,543 $ 3,788,223 Foreign Canada 159,986 71,689 116,424 8,354 356,453 Europe 418,249 247,904 195,783 74,162 936,098 Latin America 151,099 32,471 24,909 1,328 209,807 Asia Pacific 73,629 24,622 26,432 27,581 152,264 Other Foreign 8,590 47,853 7,706 - 64,149 Total Foreign 811,553 424,539 371,254 111,425 1,718,771 Total $ 1,880,105 $ 1,080,701 $ 1,945,220 $ 600,968 $ 5,506,994 Year Ended May 31, 2019 CPG Segment PCG Segment Consumer Segment SPG Segment Consolidated (In thousands) Net Sales (based on shipping location) (a) United States $ 1,003,227 $ 667,402 $ 1,462,446 $ 543,429 $ 3,676,504 Foreign Canada 181,089 82,897 117,305 8,908 390,199 Europe 477,761 251,600 213,466 86,197 1,029,024 Latin America 155,039 34,588 28,020 1,397 219,044 Asia Pacific 81,895 36,498 29,171 30,304 177,868 Other Foreign 733 63,134 8,045 - 71,912 Total Foreign 896,517 468,717 396,007 126,806 1,888,047 Total $ 1,899,744 $ 1,136,119 $ 1,858,453 $ 670,235 $ 5,564,551 Year Ended May 31, 2018 CPG Segment PCG Segment Consumer Segment SPG Segment Consolidated (In thousands) Net Sales (based on shipping location) (a) United States $ 938,062 $ 628,177 $ 1,325,509 $ 540,286 $ 3,432,034 Foreign Canada 166,600 83,607 106,460 8,682 365,349 Europe 485,583 241,639 221,484 91,712 1,040,418 Latin America 160,010 37,849 27,834 1,514 227,207 Asia Pacific 82,856 29,856 32,492 31,343 176,547 Other Foreign 4,169 67,478 8,441 - 80,088 Total Foreign 899,218 460,429 396,711 133,251 1,889,609 Total $ 1,837,280 $ 1,088,606 $ 1,722,220 $ 673,537 $ 5,321,643 Year Ended May 31, 2020 2019 2018 (In thousands) Long-Lived Assets (b) United States $ 2,146,333 $ 1,859,628 $ 1,807,046 Foreign Canada 224,177 242,582 139,259 Europe 358,511 343,501 361,317 United Kingdom 252,185 217,414 230,071 Other Foreign 195,425 225,230 241,301 Total Foreign 1,030,298 1,028,727 971,948 Total $ 3,176,631 $ 2,888,355 $ 2,778,994 (a) It is not practicable to obtain the information needed to disclose revenues attributable to each of our product lines. (b) Long-lived assets include all non-current assets, excluding non-current deferred income taxes.

Quarterly Information (Unaudi_2

Quarterly Information (Unaudited) (Tables)	12 Months Ended
	May 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Quarterly Result of Operations	The following is a summary of the quarterly results of operations for the years ended May 31, 2020 and 2019: For Quarter Ended (In thousands, except per share amounts) August 31 November 30 February 29 May 31 2020 Net Sales $ 1,472,764 $ 1,401,292 $ 1,173,976 $ 1,458,962 Gross Profit $ 574,754 $ 529,398 $ 434,747 $ 553,956 Net Income Attributable to RPM International Inc. Stockholders (a) $ 106,188 $ 77,030 $ 11,853 $ 109,314 Basic Earnings Per Share $ 0.82 $ 0.60 $ 0.09 $ 0.85 Diluted Earnings Per Share $ 0.82 $ 0.59 $ 0.09 $ 0.84 Dividends Per Share $ 0.350 $ 0.360 $ 0.360 $ 0.360 (In thousands, except per share amounts) August 31 November 30 February 28 May 31 2019 Net Sales $ 1,459,989 $ 1,362,531 $ 1,140,630 $ 1,601,401 Gross Profit $ 549,353 $ 493,731 $ 409,422 $ 635,814 Net Income Attributable to RPM International Inc. Stockholders (b) $ 69,764 $ 49,224 $ 14,190 $ 133,380 Basic Earnings Per Share $ 0.52 $ 0.37 $ 0.11 $ 1.03 Diluted Earnings Per Share $ 0.52 $ 0.37 $ 0.11 $ 1.02 Dividends Per Share $ 0.320 $ 0.350 $ 0.350 $ 0.350 (a) Reflects inventory-related charges of $28.8 million in our Consumer reportable segment resulting from SKU rationalization, excess and obsolescence, and exiting unprofitable product lines and regions and $3.2 million in our PCG segment resulting from the exit of unprofitable product lines and regions. Also reflects restructuring charges totaling $33.1 million that were incurred throughout fiscal 2020, as further described in Note B, “Restructuring”. (b) Reflects inventory-related charges of $10.5 million in our Consumer reportable segment resulting from more proactive management of inventory and $9.0 million and $1.0 million in inventory reductions related to restructuring activities in our PCG and CPG reportable segments, respectively. Also reflects restructuring charges totaling $42.3 million that were incurred throughout fiscal 2019, as further described in Note B, “Restructuring”.

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	May 31, 2020USD ($)EntitySegmentReportingUnit	May 31, 2019USD ($)EntitySegment	May 31, 2018USD ($)FacilityPosition	Feb. 28, 2019USD ($)
Significant Of Accounting Policies [Line Items]
Percentage of controlled subsidiary's earnings	100.00%
Number of business acquisition | Entity	3	5
Number of reportable segments | Segment	4	3
Net transactional foreign exchange losses	$ 300,000	$ (4,800,000)	$ (12,300,000)
Depreciation	108,500,000	94,000,000	82,000,000
Cost of sales	3,414,139,000	3,476,231,000	3,305,095,000
Bad debt expense	16,700,000	18,600,000	9,100,000
Inventory write-downs	39,600,000	29,400,000	43,700,000
Goodwill	$ 1,250,066,000	1,245,762,000	1,192,174,000
Number of operating segments | Segment	4
Goodwill impairments	$ 0	0	0
Impairment charge of intangible assets		4,200,000	0
Advertising cost	49,700,000	57,500,000	58,000,000
Research and development cost	76,500,000	71,600,000	69,700,000
Realized losses on sales of available-for-sale securities	700,000	3,000,000
Realized gains on trading securities	900,000	500,000
Unrealized losses on trading securities	400,000	1,300,000
Unrealized gain on marketable equity securities	1,800,000
Unrealized losses on marketable equity securities		4,600,000
Gross gains realized on sales of marketable securities			11,900,000
Gross losses realized on sales of marketable securities			1,800,000
Cost of Sales | Third Party
Significant Of Accounting Policies [Line Items]
Cost of sales		$ 173,600,000
Type of Cost, Good or Service [Extensible List]		us-gaap:ShippingAndHandlingMember
SG&A | Third Party
Significant Of Accounting Policies [Line Items]
Cost of sales			$ 164,700,000
Type of Cost, Good or Service [Extensible List]			us-gaap:ShippingAndHandlingMember
CPG Segment
Significant Of Accounting Policies [Line Items]
Number of business acquisition | Entity		2
Inventory write-downs		$ 1,000,000	$ 1,200,000
Goodwill	405,354,000	407,429,000	372,033,000
Impairment charge of indefinite lived intangible assets		2,000,000
CPG Segment | Europe
Significant Of Accounting Policies [Line Items]
Goodwill				$ 125,000,000
Consumer Segment
Significant Of Accounting Policies [Line Items]
Fair value of adjustment of deferred income taxes		2,800,000
Inventory write-downs	28,800,000	10,500,000	$ 36,500,000
Number of manufacturing facilities closed | Facility			2
Number of positions eliminated | Position			154
Goodwill	496,218,000	499,387,000	$ 477,718,000
Impairment loss of indefinite lived intangible assets on annual impairment tests	0	0
Impairment charge of indefinite lived intangible assets	4,000,000
PCG Segment
Significant Of Accounting Policies [Line Items]
Inventory write-downs	3,200,000	9,000,000
Goodwill	$ 185,404,000	$ 185,259,000	186,775,000
Industrial Segment
Significant Of Accounting Policies [Line Items]
Number of operating segments | Segment		2
Wood Finishes Group
Significant Of Accounting Policies [Line Items]
Number of reporting units | ReportingUnit	2
Kop-Coat Group
Significant Of Accounting Policies [Line Items]
Number of reporting units | ReportingUnit	2
SPG reportable segment
Significant Of Accounting Policies [Line Items]
Goodwill	$ 163,090,000	$ 153,687,000	$ 155,648,000
Impairment charge of definite lived intangible assets		$ 2,200,000
Minimum | CPG Segment | Europe
Significant Of Accounting Policies [Line Items]
Percentage of fair value over carrying value				9.00%

Assets Acquired and Liabilities

Assets Acquired and Liabilities Assumed on Acquisition (Detail) - USD ($) $ in Thousands		12 Months Ended
		May 31, 2020	May 31, 2019	May 31, 2018
Acquisitions
Goodwill		$ 1,250,066	$ 1,245,762	$ 1,192,174
Weighted-average other intangible asset amortization life (in years)		16 years	10 years
2020 Acquisitions
Acquisitions
Current assets		$ 10,649
Property, plant and equipment		1,694
Goodwill		28,291
Trade names - indefinite lives		1,555
Other intangible assets		31,046
Other long-term assets		56
Total Assets Acquired		73,291
Liabilities assumed		(7,135)
Net Assets Acquired	[1]	$ 66,156
2019 Acquisitions
Acquisitions
Current assets			$ 29,737
Property, plant and equipment			22,607
Goodwill			75,142
Trade names - indefinite lives			14,033
Other intangible assets			59,748
Other long-term assets			3,095
Total Assets Acquired			204,362
Liabilities assumed			(33,174)
Net Assets Acquired	[2]		$ 171,188
[1]	Figure includes cash acquired of $ 1.6
[2]	Figure includes cash acquired of $2.3 million.

Assets Acquired and Liabiliti_2

Assets Acquired and Liabilities Assumed on Acquisition (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	May 31, 2020	May 31, 2019
Business Combinations [Abstract]
Business acquisition cash acquired	$ 1.6	$ 2.3

Property, Plant and Equipment (

Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, at cost	$ 1,755,190	$ 1,662,859
Less: allowance for depreciation and amortization	905,504	843,648
Property, plant and equipment, net	849,686	819,211
Land
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, at cost	85,860	88,638
Building And Leasehold Improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, at cost	469,483	459,542
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, at cost	$ 1,199,847	$ 1,114,679

Useful Lives (Detail)

Useful Lives (Detail)	12 Months Ended
	May 31, 2020
Building And Leasehold Improvements | Minimum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property Plant and equipment useful life	1 year
Building And Leasehold Improvements | Maximum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property Plant and equipment useful life	50 years
Machinery and Equipment | Minimum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property Plant and equipment useful life	1 year
Machinery and Equipment | Maximum
Property Plant and Equipment Estimated Useful Lives [Line Items]
Property Plant and equipment useful life	40 years

Major Class of Inventory (Detai

Major Class of Inventory (Detail) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Inventory Disclosure [Abstract]
Raw material and supplies	$ 282,579	$ 296,493
Finished goods	527,869	545,380
Total Inventory	$ 810,448	$ 841,873

Investment (Income), Net (Detai

Investment (Income), Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Investment Income Net [Abstract]
Interest (income)	$ (5,313)	$ (4,885)	$ (5,003)
Net loss (gain) on marketable securities	(1,629)	8,366	(11,704)
Dividend (income)	(2,797)	(4,211)	(3,735)
Investment (income), net	$ (9,739)	$ (730)	$ (20,442)

Other Expenses (Income), Net (D

Other Expenses (Income), Net (Detail) - USD ($) $ in Thousands		12 Months Ended
		May 31, 2020	May 31, 2019	May 31, 2018
Other Income And Expenses [Abstract]
Royalty expense (income), net	[1]	$ 5,206	$ (96)	$ 404
(Income) related to unconsolidated equity affiliates		(165)	(332)	(1,002)
Pension non-service costs		6,076	1,647
Loss on extinguishment of debt	[2]		3,051
Loss on divestiture	[3]	949
Other expense (income), net		$ 12,066	$ 4,270	$ (598)
[1]	Includes a $5.3 million charge incurred during the fourth quarter of fiscal 2020 related to the termination of a licensing agreement within our Consumer reportable segment.
[2]	Reflects the loss incurred upon divestiture of a contracting business located in Australia, which had reported through our PCG segment. In connection with the redemption of all of our outstanding 2.25% convertible senior notes in November 2018, we recognized a loss of $3.1 million, due to the fair value remeasurement on the date of conversion
[3]	Reflects the loss incurred upon divestiture of a contracting business located in Australia, which had reported through our PCG segment.

Other Expense (Income), Net (Pa

Other Expense (Income), Net (Parenthetical) (Detail) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended	12 Months Ended
		Nov. 30, 2018	May 31, 2020	May 31, 2019	Nov. 27, 2018
Other Income And Expenses [Line Items]
Terminated license agreement charge			$ 5,300
Loss on extinguishment of debt	[1]			$ 3,051
2.25% Convertible Senior Notes
Other Income And Expenses [Line Items]
Debt, interest rate		2.25%			2.25%
Debt instrument redemption period		2018-11
Loss on extinguishment of debt		$ 3,100
[1]	Reflects the loss incurred upon divestiture of a contracting business located in Australia, which had reported through our PCG segment. In connection with the redemption of all of our outstanding 2.25% convertible senior notes in November 2018, we recognized a loss of $3.1 million, due to the fair value remeasurement on the date of conversion

Restructuring - Additional Info

Restructuring - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Restructuring Cost And Reserve [Line Items]
Inventory-related charges	$ 39.6	$ 29.4	$ 43.7
Consumer Segment
Restructuring Cost And Reserve [Line Items]
Inventory-related charges	28.8	10.5	36.5
CPG Segment
Restructuring Cost And Reserve [Line Items]
Inventory-related charges		1	1.2
PCG Segment
Restructuring Cost And Reserve [Line Items]
Inventory-related charges	$ 3.2	9
2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring plan, expected to be formulated	During the second quarter ended November 30, 2018
2020 MAP to Growth | Consumer Segment | Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges	$ 16.3	2.1	36.5
Inventory-related charges, favorable adjustment		0.2
2020 MAP to Growth | CPG Segment | Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges	0.7	1	$ 1.2
2020 MAP to Growth | PCG Segment | Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges	3.2	$ 9
2020 MAP to Growth | SPG Segments | Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges	0.1
2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Decrease in current total expected costs	4.3
2020 MAP to Growth | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Increase in current total expected costs	0.5
2020 MAP to Growth | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Increase in current total expected costs	$ 3.8

Summary of Charges Recorded in

Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Detail) - USD ($)	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Restructuring Cost And Reserve [Line Items]
Current Year Charges	$ 33,108,000	$ 42,310,000	$ 17,514,000
SPG reportable segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges			0
2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Current Year Charges	33,108,000	42,310,000	17,514,000
Cumulative Costs to Date	92,932,000
Total Expected Costs	110,919,000
2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	19,747,000	32,519,000	9,957,000
Cumulative Costs to Date	62,223,000
Total Expected Costs	72,423,000
2020 MAP to Growth | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	8,548,000	8,195,000	6,184,000
Cumulative Costs to Date	22,927,000
Total Expected Costs	30,275,000
2020 MAP to Growth | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	4,813,000	1,596,000	1,373,000
Cumulative Costs to Date	7,782,000
Total Expected Costs	8,221,000
2020 MAP to Growth | Construction Products Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	8,726,000	11,598,000	4,187,000
Cumulative Costs to Date	24,511,000
Total Expected Costs	31,407,000
2020 MAP to Growth | Construction Products Segment | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	6,866,000	9,459,000	1,769,000
Cumulative Costs to Date	18,094,000
Total Expected Costs	22,243,000
2020 MAP to Growth | Construction Products Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,508,000	1,924,000	1,045,000
Cumulative Costs to Date	4,477,000
Total Expected Costs	7,140,000
2020 MAP to Growth | Construction Products Segment | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	352,000	215,000	1,373,000
Cumulative Costs to Date	1,940,000
Total Expected Costs	2,024,000
2020 MAP to Growth | Performance Coatings Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	9,094,000	9,839,000	400,000
Cumulative Costs to Date	19,333,000
Total Expected Costs	25,330,000
2020 MAP to Growth | Performance Coatings Segment | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	6,973,000	6,012,000	400,000
Cumulative Costs to Date	13,385,000
Total Expected Costs	17,073,000
2020 MAP to Growth | Performance Coatings Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,873,000	3,474,000
Cumulative Costs to Date	5,347,000
Total Expected Costs	7,349,000
2020 MAP to Growth | Performance Coatings Segment | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	248,000	353,000
Cumulative Costs to Date	601,000
Total Expected Costs	908,000
2020 MAP to Growth | Consumer Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	9,428,000	3,304,000	10,791,000
Cumulative Costs to Date	23,523,000
Total Expected Costs	25,749,000
2020 MAP to Growth | Consumer Segment | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	3,089,000	1,726,000	5,652,000
Cumulative Costs to Date	10,467,000
Total Expected Costs	11,493,000
2020 MAP to Growth | Consumer Segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	2,245,000	1,553,000	5,139,000
Cumulative Costs to Date	8,937,000
Total Expected Costs	10,137,000
2020 MAP to Growth | Consumer Segment | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	4,094,000	25,000
Cumulative Costs to Date	4,119,000
Total Expected Costs	4,119,000
2020 MAP to Growth | SPG reportable segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	4,633,000	7,585,000
Cumulative Costs to Date	12,218,000
Total Expected Costs	15,086,000
2020 MAP to Growth | SPG reportable segment | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,592,000	5,338,000
Cumulative Costs to Date	6,930,000
Total Expected Costs	8,267,000
2020 MAP to Growth | SPG reportable segment | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	2,922,000	1,244,000
Cumulative Costs to Date	4,166,000
Total Expected Costs	5,649,000
2020 MAP to Growth | SPG reportable segment | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	119,000	1,003,000
Cumulative Costs to Date	1,122,000
Total Expected Costs	1,170,000
2020 MAP to Growth | Corporate/Other Segment
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,227,000	9,984,000	2,136,000
Cumulative Costs to Date	13,347,000
Total Expected Costs	13,347,000
2020 MAP to Growth | Corporate/Other Segment | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Current Year Charges	1,227,000	$ 9,984,000	$ 2,136,000
Cumulative Costs to Date	13,347,000
Total Expected Costs	$ 13,347,000

Summary of Charges Recorded i_2

Summary of Charges Recorded in Connection with Restructuring by Reportable Segment (Parenthetical) (Detail)	12 Months Ended
	May 31, 2020USD ($)Position	May 31, 2019USD ($)PositionExecutive	May 31, 2018USD ($)Position
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 33,108,000	$ 42,310,000	$ 17,514,000
2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring charges	33,108,000	42,310,000	17,514,000
2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 19,747,000	$ 32,519,000	$ 9,957,000
Construction Products Segment | 2020 MAP to Growth Related to Current Elimination | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Number of positions eliminated | Position	112	109	27
Construction Products Segment | 2020 MAP to Growth Plan Related to Legal Function
Restructuring Cost And Reserve [Line Items]
Number of positions eliminated | Position		1
Restructuring charges		$ 200,000
Construction Products Segment | 2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 8,726,000	11,598,000	$ 4,187,000
Construction Products Segment | 2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	6,866,000	9,459,000	1,769,000
Performance Coatings Segment | 2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 9,094,000	$ 9,839,000	$ 400,000
Performance Coatings Segment | 2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Number of positions eliminated | Position	161	114	1
Restructuring charges	$ 6,973,000	$ 6,012,000	$ 400,000
Corporate/Other Segment
Restructuring Cost And Reserve [Line Items]
Number of positions eliminated | Position	2
Corporate/Other Segment | 2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 1,227,000	9,984,000	2,136,000
Corporate/Other Segment | 2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Restructuring charges	1,227,000	$ 9,984,000	2,136,000
Number of corporate executives | Executive		2
Corporate/Other Segment | 2020 MAP to Growth | Vesting Equity Awards
Restructuring Cost And Reserve [Line Items]
Number of corporate executives | Executive		2
Consumer Segment | 2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 9,428,000	$ 3,304,000	$ 10,791,000
Consumer Segment | 2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Number of positions eliminated | Position	92	21	155
Restructuring charges	$ 3,089,000	$ 1,726,000	$ 5,652,000
CPG Segment | 2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Number of corporate executives | Executive		3
SPG reportable segment
Restructuring Cost And Reserve [Line Items]
Restructuring charges			$ 0
SPG reportable segment | 2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 4,633,000	$ 7,585,000
Number of corporate executives | Executive		4
SPG reportable segment | 2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Number of positions eliminated | Position	94	130
Restructuring charges	$ 1,592,000	$ 5,338,000

Summary of Activity in Restruct

Summary of Activity in Restructuring Reserves (Detail) - USD ($) $ in Thousands		12 Months Ended
		May 31, 2020	May 31, 2019	May 31, 2018
Restructuring Cost And Reserve [Line Items]
Additions charged to expense		$ 33,108	$ 42,310	$ 17,514
2020 MAP to Growth
Restructuring Cost And Reserve [Line Items]
Beginning balance		12,694	17,514
Additions charged to expense		33,108	42,310	17,514
Cash payments charged against reserve		(26,277)	(34,238)
Non-cash charges included above	[1]	(6,288)	(12,892)
Ending balance		13,237	12,694	17,514
2020 MAP to Growth | Severance and Benefit Costs
Restructuring Cost And Reserve [Line Items]
Beginning balance		4,837	9,957
Additions charged to expense		19,747	32,519	9,957
Cash payments charged against reserve		(17,038)	(31,219)
Non-cash charges included above	[1]	(189)	(6,420)
Ending balance		7,357	4,837	9,957
2020 MAP to Growth | Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Beginning balance		7,857	6,184
Additions charged to expense		8,548	8,195	6,184
Cash payments charged against reserve		(9,239)	(3,019)
Non-cash charges included above	[1]	(1,286)	(3,503)
Ending balance		5,880	7,857	6,184
2020 MAP to Growth | Other Asset Write-offs
Restructuring Cost And Reserve [Line Items]
Beginning balance			1,373
Additions charged to expense		4,813	1,596	1,373
Non-cash charges included above	[1]	$ (4,813)	$ (2,969)
Ending balance				$ 1,373
[1]	Non-cash charges primarily include accelerated vesting of equity awards and asset-write offs.

Changes in Carrying Amount of G

Changes in Carrying Amount of Goodwill, by Reportable Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020		May 31, 2019
Goodwill [Line Items]
Goodwill beginning balance	$ 1,245,762		$ 1,192,174
Acquisitions	28,064		77,459
Translation adjustments & other	(23,760)	[1]	(23,871)
Goodwill ending balance	1,250,066		1,245,762
CPG Segment
Goodwill [Line Items]
Goodwill beginning balance	407,429		372,033
Acquisitions	14,689		47,151
Translation adjustments & other	(16,764)	[1]	(11,755)
Goodwill ending balance	405,354		407,429
PCG Segment
Goodwill [Line Items]
Goodwill beginning balance	185,259		186,775
Acquisitions	3,023		4,314
Translation adjustments & other	(2,878)	[1]	(5,830)
Goodwill ending balance	185,404		185,259
Consumer Segment
Goodwill [Line Items]
Goodwill beginning balance	499,387		477,718
Acquisitions			25,994
Translation adjustments & other	(3,169)	[1]	(4,325)
Goodwill ending balance	496,218		499,387
SPG Segments
Goodwill [Line Items]
Goodwill beginning balance	153,687		155,648
Acquisitions	10,352
Translation adjustments & other	(949)	[1]	(1,961)
Goodwill ending balance	$ 163,090		$ 153,687
[1]	Activity includes a $2.3 million decrease to goodwill within our Consumer segment related to adjustments to preliminary purchase price allocations, primarily due to deferred tax adjustments.

Changes in Carrying Amount of_2

Changes in Carrying Amount of Goodwill, by Reportable Segment (Parenthetical) (Detail) $ in Millions	12 Months Ended
	May 31, 2020USD ($)
Consumer Segment
Goodwill [Line Items]
Adjustments to preliminary purchase price allocations	$ 2.3

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018	May 31, 2017	May 31, 2009
Goodwill And Intangible Assets [Line Items]
Accumulated goodwill impairment losses	$ 156,300,000
Impairment losses	0	$ 0	$ 0
Intangible asset amortization expense	45,600,000	45,100,000	43,200,000
Future amortization expense of intangible asset in 2021	42,100,000
Future amortization expense of intangible asset in 2022	40,800,000
Future amortization expense of intangible asset in 2023	37,100,000
Future amortization expense of intangible asset in 2024	33,900,000
Future amortization expense of intangible asset in 2025	29,100,000
Accumulated intangible asset impairment losses, gross	61,800,000
Other intangible asset impairment losses		4,200,000	$ 0
SPG Segments
Goodwill And Intangible Assets [Line Items]
Accumulated goodwill impairment losses				$ 141,400,000
SPG Segments | Customer-related Intangibles
Goodwill And Intangible Assets [Line Items]
Other intangible asset impairment losses		2,200,000
CPG Segment
Goodwill And Intangible Assets [Line Items]
Accumulated goodwill impairment losses					$ 14,900,000
CPG Segment | Trade names
Goodwill And Intangible Assets [Line Items]
Other intangible asset impairment losses		$ 2,000,000
Industrial Segment
Goodwill And Intangible Assets [Line Items]
Accumulated intangible asset impairment losses, gross					$ 600,000
Consumer Segment
Goodwill And Intangible Assets [Line Items]
Accumulated intangible asset impairment losses, gross				$ 53,000,000
Consumer Segment | Trade names | Restructuring Expense
Goodwill And Intangible Assets [Line Items]
Other intangible asset impairment losses	$ 4,000,000

Other Intangible Assets Major C

Other Intangible Assets Major Classes (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, gross carrying amount	$ 732,698	$ 710,390
Amortized intangible assets, accumulated amortization	(399,028)	(365,795)
Amortized intangible assets, net other intangible assets	333,670	344,595
Total Other Intangible Assets, gross carrying amount	983,408	966,877
Total Other Intangible Assets, net other intangible assets	584,380	601,082
Trademarks and Trade Names
Intangible Assets by Major Class [Line Items]
Indefinite-lived intangible assets, acquisitions	250,710	256,487
Indefinite-lived intangible assets, net other intangible assets	250,710	256,487
Formulae
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, gross carrying amount	230,621	227,208
Amortized intangible assets, accumulated amortization	(160,771)	(150,091)
Amortized intangible assets, net other intangible assets	$ 69,850	$ 77,117
Formulae | Minimum
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, amortization period	9 years	9 years
Formulae | Maximum
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, amortization period	33 years	33 years
Customer-Related Intangible Assets
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, gross carrying amount	$ 439,153	$ 413,475
Amortized intangible assets, accumulated amortization	(197,752)	(172,238)
Amortized intangible assets, net other intangible assets	$ 241,401	$ 241,237
Customer-Related Intangible Assets | Minimum
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, amortization period	5 years	5 years
Customer-Related Intangible Assets | Maximum
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, amortization period	33 years	33 years
Trademarks and Trade Names
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, gross carrying amount	$ 30,700	$ 32,998
Amortized intangible assets, accumulated amortization	(17,224)	(16,867)
Amortized intangible assets, net other intangible assets	$ 13,476	$ 16,131
Trademarks and Trade Names | Minimum
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, amortization period	5 years	5 years
Trademarks and Trade Names | Maximum
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, amortization period	40 years	40 years
Other Intangible Assets
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, gross carrying amount	$ 32,224	$ 36,709
Amortized intangible assets, accumulated amortization	(23,281)	(26,599)
Amortized intangible assets, net other intangible assets	$ 8,943	$ 10,110
Other Intangible Assets | Minimum
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, amortization period	1 year	1 year
Other Intangible Assets | Maximum
Intangible Assets by Major Class [Line Items]
Amortized intangible assets, amortization period	33 years	33 years

Summary of Available-for-Sale D

Summary of Available-for-Sale Debt Securities by Asset Type (Detail) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Debt Securities, Available-for-sale [Line Items]
Available-for-Sale Debt Securities, Amortized Cost	$ 25,605	$ 24,905
Available-for-Sale Debt Securities, Gross Unrealized Gains	1,357	415
Available-for-Sale Debt Securities, Gross Unrealized Losses	(40)	(311)
Available-for-Sale Debt Securities, Fair Value (Net Carrying Amount)	26,922	25,009
U.S. Treasury and other government
Debt Securities, Available-for-sale [Line Items]
Available-for-Sale Debt Securities, Amortized Cost	25,462	24,483
Available-for-Sale Debt Securities, Gross Unrealized Gains	1,314	372
Available-for-Sale Debt Securities, Gross Unrealized Losses	(40)	(308)
Available-for-Sale Debt Securities, Fair Value (Net Carrying Amount)	26,736	24,547
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Available-for-Sale Debt Securities, Amortized Cost	143	422
Available-for-Sale Debt Securities, Gross Unrealized Gains	43	43
Available-for-Sale Debt Securities, Gross Unrealized Losses		(3)
Available-for-Sale Debt Securities, Fair Value (Net Carrying Amount)	$ 186	$ 462

Marketable Securities - Additio

Marketable Securities - Additional Information (Detail) - USD ($) $ in Millions	May 31, 2020	May 31, 2019
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale debt securities, current	$ 7.6	$ 8.6
Available-for-sale debt securities, long-term	19.3	16.4
Equity securities	$ 87.1	$ 87.5
Maximum
Schedule of Available-for-sale Securities [Line Items]
Investments with unrealized loss, percentage of fair values less than original cost	15.00%	15.00%
Trading Securities
Schedule of Available-for-sale Securities [Line Items]
Securities held in relation to deferred compensation plan	$ 9.1	$ 12.3

Summary of Available-for-Sale_2

Summary of Available-for-Sale Debt Securities in Unrealized Loss Position and Included in Accumulated Other Comprehensive (Loss), Aggregated by Length of Time Investments (Detail) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Investments Debt And Equity Securities [Abstract]
Total investments with unrealized losses, fair value	$ 2,028	$ 11,508
Unrealized losses with a loss position for less than 12 months, fair value		806
Unrealized losses with a loss position for more than 12 months, fair value	2,028	10,702
Total investments with unrealized losses, gross unrealized losses	(40)	(311)
Unrealized losses with a loss position for less than 12 months, gross unrealized losses		(2)
Unrealized losses with a loss position for more than 12 months, gross unrealized losses	$ (40)	$ (309)

Net Carrying Values of Debt Sec

Net Carrying Values of Debt Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Available-for-Sale Debt Securities, Amortized Cost
Less than one year, amortized cost	$ 7,567
One year through five years, amortized cost	10,170
Six years through ten years, amortized cost	6,084
After ten years, amortized cost	1,784
Available-for-Sale Debt Securities, Amortized Cost	25,605	$ 24,905
Available-for-Sale Debt Securities, Fair Value
Less than one year, fair value	7,581
One year through five years, fair value	10,623
Six years through ten years, fair value	6,591
After ten years, fair value	2,127
Available-for-sale debt securities, fair value	$ 26,922	$ 25,009

Assets and Liabilities Measured

Assets and Liabilities Measured at Fair Value on Recurring Basis and Categorized using Fair Value Hierarchy (Detail) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	$ 26,922	$ 25,009
U.S. Treasury and other government
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	26,736	24,547
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	186	462
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	26,922	25,009
Total trading and other equity securities	96,221	99,821
Assets (liabilities) at fair value	107,461	103,279
Fair Value, Measurements, Recurring | U.S. Treasury and other government
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	26,736	24,547
Fair Value, Measurements, Recurring | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	186	462
Fair Value, Measurements, Recurring | Stocks | Domestic
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total trading and other equity securities	3,870
Fair Value, Measurements, Recurring | Mutual funds | Domestic
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total trading and other equity securities	63,536	67,739
Fair Value, Measurements, Recurring | Mutual funds | Foreign
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total trading and other equity securities	28,815	32,082
Fair Value, Measurements, Recurring | Contingent consideration liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	(15,682)	(21,551)
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total trading and other equity securities	3,870
Assets (liabilities) at fair value	3,870
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Stocks | Domestic
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total trading and other equity securities	3,870
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	26,922	25,009
Total trading and other equity securities	92,351	99,821
Assets (liabilities) at fair value	119,273	124,830
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. Treasury and other government
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	26,736	24,547
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities	186	462
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mutual funds | Domestic
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total trading and other equity securities	63,536	67,739
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mutual funds | Foreign
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total trading and other equity securities	28,815	32,082
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets (liabilities) at fair value	(15,682)	(21,551)
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Contingent consideration liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ (15,682)	$ (21,551)

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	May 31, 2020	May 31, 2019
Fair Value Disclosures [Abstract]
Settlements of contingent consideration obligations	$ 6.4	$ 5.2
Increase in accrual related to fair value adjustments		5.8
Increase in accrual related to new acquisitions		$ 3

Fair Value and Carrying Value o

Fair Value and Carrying Value of Financial Instruments and Long-Term Debt (Detail) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable equity securities	$ 87,100	$ 87,500
Marketable debt securities	26,922	25,009
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	233,416	223,168
Marketable equity securities	87,111	87,525
Marketable debt securities	26,922	25,009
Long-term debt, including current portion	2,539,180	2,525,908
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	233,416	223,168
Marketable equity securities	87,111	87,525
Marketable debt securities	26,922	25,009
Long-term debt, including current portion	$ 2,618,719	$ 2,526,817

Derivatives and Hedging - Addit

Derivatives and Hedging - Additional Information (Detail)	Oct. 31, 2017USD ($)CrossCurrencySwap	Feb. 29, 2020USD ($)CrossCurrencySwap	May 31, 2020USD ($)ForwardContract	Feb. 29, 2020EUR (€)CrossCurrencySwap	May 31, 2019USD ($)ForwardContract	Oct. 31, 2017EUR (€)CrossCurrencySwap
Derivatives Designated as Hedging Instruments
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Number of cross currency swaps executed | CrossCurrencySwap	2					2
Notional amount	$ 100,000,000					€ 85,250,000
Derivative instruments maturity date	2022-11
Number of cross currency swaps terminated | CrossCurrencySwap		2		2
Cash received on derivative fair value hedge | $		$ 9,300,000
Discontinuation of price risk cash flow hedge			hedge accounting was discontinued and a hedge accounting adjustment to our Senior Notes of $1.5 million was recorded and is being amortized to interest expense in the Consolidated Statements of Operations through the termination of the 3.450% Notes in November 2022. Changes in the fair value of the cross currency swaps due to spot foreign exchange rates are recorded as cumulative translation adjustment within AOCI and will remain in AOCI until either the sale or substantially complete liquidation of the hedged subsidiaries
Derivatives Designated as Hedging Instruments | Variable Interest Rate
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Number of cross currency swaps executed | CrossCurrencySwap		2		2
Notional amount		$ 300,000,000		€ 277,730,000
Derivative instruments maturity date		2023-02
Derivatives Designated as Hedging Instruments | Foreign Borrower’s Term Loan | Variable Interest Rate
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Notional amount		$ 100,000,000		€ 92,520,000
Derivative instruments maturity date		2023-02
Derivatives Designated as Hedging Instruments | 3.450% Senior Notes November 2022
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Debt instrument, interest rate, stated percentage		3.45%		3.45%
Derivatives Designated as Hedging Instruments | 3.450% Senior Notes November 2022 | Interest Expense
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Discontinued hedge accounting adjustment to senior Notes | $		$ 1,500,000
Derivatives Not Designated as Hedges
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Number of foreign currency forward contracts held | ForwardContract			1		1
Derivatives Not Designated as Hedges | Forward Contracts Held to Purchase Foreign Currencies
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Notional amount | $			$ 63,200,000		$ 38,700,000

Derivatives and Hedging - Sched

Derivatives and Hedging - Schedule of Derivatives Instruments for Gains or Losses Initially Recognized in AOCI in Consolidated Balance Sheet (Detail) - Derivatives Designated as Hedging Instruments - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) recognized in AOCI	$ (8,386)	$ 4,998	$ (769)
Pretax gain/(loss) reclassified from AOCI into income	(1,930)
Interest Rate Swap | Interest Expense | Cash Flow
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) recognized in AOCI	(7,998)
Pretax gain/(loss) reclassified from AOCI into income, cash flow	$ 170
Income Statement Location	Interest Expense
Cross Currency Swap | Interest Expense | Cash Flow
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) recognized in AOCI	$ (2,254)
Pretax gain/(loss) reclassified from AOCI into income, cash flow	$ 554
Income Statement Location	Interest Expense
Cross Currency Swap | Foreign Exchange Gain/Loss | Cash Flow
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) reclassified from AOCI into income, cash flow	$ (2,654)
Income Statement Location	Foreign Exchange Gain/(Loss)
Cross Currency Swap | Gain or (loss) on sale of subsidiary | Net Investment
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) recognized in AOCI	$ 1,866	$ 4,998	$ (769)
Income Statement Location	Gain or (loss) on sale of subsidiary

Derivatives and Hedging - Sch_2

Derivatives and Hedging - Schedule of Fair Values of Qualifying and Non-Qualifying Instruments Used in Hedging Transactions (Detail) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Derivatives Designated as Hedging Instruments | Cross Currency Swap | Cash Flow | Other Current Assets
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Fair value of derivatives assets	$ 750
Derivatives Designated as Hedging Instruments | Cross Currency Swap | Cash Flow | Other Long-Term Liabilities
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Fair value of derivatives liabilities	3,608
Derivatives Designated as Hedging Instruments | Cross Currency Swap | Net Investment | Other Current Assets
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Fair value of derivatives assets	5,352	$ 2,482
Derivatives Designated as Hedging Instruments | Cross Currency Swap | Net Investment | Other Assets (Long-Term)
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Fair value of derivatives assets	12,409	6,163
Derivatives Designated as Hedging Instruments | Cross Currency Swap | Net Investment | Other Accrued Liabilities
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Fair value of derivatives liabilities	294
Derivatives Designated as Hedging Instruments | Cross Currency Swap | Net Investment | Other Long-Term Liabilities
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Fair value of derivatives liabilities	18,204	4,276
Derivatives Designated as Hedging Instruments | Interest Rate Swap | Fair Value | Other Current Assets
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Fair value of derivatives assets		513
Derivatives Designated as Hedging Instruments | Interest Rate Swap | Fair Value | Other Accrued Liabilities
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Fair value of derivatives liabilities		230
Derivatives Designated as Hedging Instruments | Interest Rate Swap | Cash Flow | Other Accrued Liabilities
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Fair value of derivatives liabilities	2,981
Derivatives Designated as Hedging Instruments | Interest Rate Swap | Cash Flow | Other Long-Term Liabilities
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Fair value of derivatives liabilities	5,187
Derivatives Not Designated as Hedging Instruments | Foreign Currency Exchange (Cash Flow) | Other Current Assets
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Fair value of derivatives assets		$ 51
Derivatives Not Designated as Hedging Instruments | Foreign Currency Exchange (Cash Flow) | Other Accrued Liabilities
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Fair value of derivatives liabilities	$ 53

Description of Long Term Debt (

Description of Long Term Debt (Detail) - USD ($) $ in Thousands		May 31, 2020	May 31, 2019
Debt Instrument [Line Items]
Long-term debt including finance lease		$ 2,539,180	$ 2,525,908
Less: current portion		80,890	552,446
Long-term debt, less current maturities		2,458,290	1,973,462
Revolving Credit Facility
Debt Instrument [Line Items]
Debt	[1]	419,317	336,442
Accounts Receivable Securitization Program with Two Banks, through May 21, 2021
Debt Instrument [Line Items]
Debt	[2]	79,756	99,887
Unsecured 6.125% senior notes due October 15, 2019
Debt Instrument [Line Items]
Debt	[3]		450,454
Unsecured 3.45% senior notes due November 15, 2022
Debt Instrument [Line Items]
Debt	[4]	300,615	299,257
Unsecured $100M Term Loan due February 21, 2023
Debt Instrument [Line Items]
Debt		99,810
Unsecured $300M Term Loan due February 21, 2023
Debt Instrument [Line Items]
Debt		299,431
Unsecured 3.75% notes due March 15, 2027
Debt Instrument [Line Items]
Debt	[5]	397,058	396,586
Unsecured 4.55% senior notes due March 1, 2029
Debt Instrument [Line Items]
Debt	[6]	346,514	346,006
Unsecured 5.25% notes due June 1, 2045
Debt Instrument [Line Items]
Debt	[7]	298,668	298,589
Unsecured 4.25% notes due January 15, 2048
Debt Instrument [Line Items]
Debt	[8]	296,590	296,467
Other Borrowings
Debt Instrument [Line Items]
Long-term debt including finance lease		$ 1,421	$ 2,220
[1]	Interest at May 31, 2020 was tied to LIBOR and averaged 1.5505% for USD denominated debt ($218,281), 1.4650% for AUD denominated debt ($37,199) and 1.3750% on EUR denominated debt ($167,537).  Interest at May 31, 2019 was tied to LIBOR and averaged 3.6805% for USD denominated debt ($14,268), 2.69% for AUD denominated debt ($34,558), 3.23% on CAD denominated debt ($131,738) and 1.25% on EUR denominated debt ($159,745).  At May 31, 2020 and 2019, the revolving credit facility is adjusted for debt issuance costs, net of amortization, for approximately $3.7 million and $3.9 million, respectively.
[2]	At May 31, 2020 and 2019, the accounts receivable securitization program is adjusted for debt issuance cost, net of amortization, for approximately $ 0.2 million and $ 0.1 million, respectively.
[3]	Includes the combination of the October 2009 initial issuance of $300.0 million aggregate principal amount and the May 2011 issuance of an additional $150.0 million aggregate principal amount of these notes. The effective interest rate on the notes issued in October 2009, including the amortization of the discount, was 6.139%. The additional $150.0 million aggregate principal amount of the notes due 2019 issued in May 2011 was adjusted for the unamortized premium received at issuance, which approximated $0.7 million at May 31, 2019. The premium effectively increased the proceeds from the financing. The effective interest rate on the $150.0 million notes issued in May 2011 is 4.934%. At May 31, 2019, the notes were adjusted for debt issuance costs, net of amortization, for approximately $0.2 million. During the second quarter of fiscal 2020, we used funds from our revolving credit facility to pay off our $450 million, 6.125% notes due in October 2019.
[4]	The $300.0 million face amount of the notes due 2022 is adjusted for the amortization of the original issue discount and mark-to-market derivative asset of approximated $0.1 million and ($1.3 million) at May 31, 2020 and approximated $0.1 million and ($0.3 million) at May 31, 2019, respectively.  The original issue discount effectively reduced the ultimate proceeds from the financing.  The effective interest rate on the notes, including the amortization of the discount, is 3.465%.  At May 31, 2020 and 2019, the notes are reduced by debt issuance costs, net of amortization, for approximately $0.6 million and $0.9 million, respectively.
[5]	The $400.0 million face amount of the notes due 2027 is adjusted for the amortization of the original issue discount, which approximated $0.3 million and $0.4 million at May 31, 2020 and 2019, respectively.  The original issue discount effectively reduced the ultimate proceeds from the financing.  The effective interest rate on the notes, including the amortization of the discount, is 3.767%.  At May 31, 2020 and 2019, the notes are adjusted for debt issuance costs, net of amortization, for approximately $2.6 million and $3.0 million, respectively.
[6]	The $350.0 million aggregate principal amount of the notes due 2029 is adjusted for the amortization of the original issue discount, which approximated $0.5 million at May 31, 2020 and 2019. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, was 4.568%.  At May 31, 2020 and 2019, the notes were adjusted for debt issuance costs, net of amortization, for approximately $3.0 million and $3.5 million, respectively.
[7]	The $250.0 million face amount of the notes due 2045 is adjusted for the amortization of the original issue discount, which approximated $1.4 million at May 31, 2020 and 2019. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, is 5.29%. In March 2017, as a further issuance of the 5.25% notes due 2045, we closed an offering of $50.0 million aggregate principal, which is adjusted for the unamortized premium received at issuance, which approximated $2.9 million and $3.0 million at May 31, 2020 and 2019, respectively.  The premium effectively increased the proceeds from the financing.  The effective interest rate on the $50.0 million notes issued March 2017 is 4.839%.  At May 31, 2020 and 2019, the notes are adjusted for debt issuance costs, net of amortization, for approximately $2.9 million and $3.0 million, respectively.
[8]	The $300.0 million face amount of the notes due 2048 is adjusted for the debt issuance cost, net of amortization, which approximated $3.4 million and $3.5 million at May 31, 2020 and 2019, respectively. The effective interest rate on the notes is 4.25%.

Description of Long Term Debt_2

Description of Long Term Debt (Parenthetical) (Detail) - USD ($) $ in Thousands

3 Months Ended

12 Months Ended

Nov. 30, 2019

May 31, 2020

May 31, 2019

Feb. 27, 2019

Dec. 20, 2017

Mar. 31, 2017

Mar. 02, 2017

May 29, 2015

Oct. 23, 2012

May 27, 2011

Revolving Credit Facility

Debt Instrument [Line Items]

Debt, due date

[1]

Oct. 31, 2023

Oct. 31, 2023

Debt issuance costs, net of amortization

$ 3,700

$ 3,900

Unsecured $100M Term Loan due February 21, 2023

Debt Instrument [Line Items]

Debt

$ 100,000

Debt, due date

Feb. 21, 2023

Unsecured $300M Term Loan due February 21, 2023

Debt Instrument [Line Items]

Debt

$ 300,000

Debt, due date

Feb. 21, 2023

Unsecured 6.125% senior notes due October 15, 2019

Debt Instrument [Line Items]

Debt, interest rate

[2]

6.125%

6.125%

Debt, due date

[2]

Oct. 15, 2019

Oct. 15, 2019

Debt issuance costs, net of amortization

$ 200

Repayments of debt

$ 450,000

Unsecured 3.45% senior notes due November 15, 2022

Debt Instrument [Line Items]

Debt

$ 300,000

$ 300,000

$ 300,000

Debt, interest rate

3.45%

3.45%

3.45%

Debt, due date

Nov. 15, 2022

Nov. 15, 2022

Debt issuance costs, net of amortization

$ 600

$ 900

Amortization of debt discount premium

$ 100

$ 100

Debt instrument, effective interest rate

3.465%

3.465%

Mark-to-market derivative asset

$ 1,300

$ 300

Unsecured 3.75% notes due March 15, 2027

Debt Instrument [Line Items]

Debt

$ 400,000

$ 400,000

$ 400,000

Debt, interest rate

3.75%

[3]

3.75%

[3]

3.75%

Debt, due date

[3]

Mar. 15, 2027

Mar. 15, 2027

Debt issuance costs, net of amortization

$ 2,600

$ 3,000

Amortization of debt discount premium

$ 300

$ 400

Debt instrument, effective interest rate

3.767%

3.767%

Unsecured 4.55% senior notes due March 1, 2029

Debt Instrument [Line Items]

Debt

$ 350,000

$ 350,000

$ 350,000

Debt, interest rate

4.55%

[4]

4.55%

[4]

4.55%

Debt, due date

[4]

Mar. 1, 2029

Mar. 1, 2029

Debt issuance costs, net of amortization

$ 3,000

$ 3,500

Amortization of debt discount premium

$ 500

$ 500

Debt instrument, effective interest rate

4.568%

4.568%

Unsecured 5.25% notes due June 1, 2045

Debt Instrument [Line Items]

Debt

$ 50,000

$ 250,000

Debt, interest rate

5.25%

[5]

5.25%

[5]

5.25%

5.25%

Debt, due date

[5]

Jun. 1, 2045

Jun. 1, 2045

Debt issuance costs, net of amortization

$ 2,900

$ 3,000

Amortization of debt discount premium

$ 1,400

$ 1,400

Debt instrument, effective interest rate

5.29%

5.29%

Accounts Receivable Securitization Program with Two Banks, through May 21, 2021

Debt Instrument [Line Items]

Debt, due date

May 21, 2021

May 21, 2021

Debt issuance costs, net of amortization

$ 200

$ 100

Other Borrowings

Debt Instrument [Line Items]

Debt, maturity year

2021

2021

Unsecured 4.25% notes due January 15, 2048

Debt Instrument [Line Items]

Debt

$ 300,000

$ 300,000

$ 300,000

Debt, interest rate

4.25%

[6]

4.25%

[6]

4.25%

Debt, due date

[6]

Jan. 15, 2048

Jan. 15, 2048

Debt issuance costs, net of amortization

$ 3,400

$ 3,500

Debt instrument, effective interest rate

4.25%

4.25%

United States Dollar Denominated Debt | Revolving Credit Facility

Debt Instrument [Line Items]

Outstanding debt

$ 218,281

$ 14,268

United States Dollar Denominated Debt | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)

Debt Instrument [Line Items]

Average interest rate

1.5505%

3.6805%

Australian Dollar Denominated Debt | Revolving Credit Facility

Debt Instrument [Line Items]

Outstanding debt

$ 37,199

$ 34,558

Australian Dollar Denominated Debt | Revolving Credit Facility | Australian Bank Bill Swap Bid Rate

Debt Instrument [Line Items]

Average interest rate

1.465%

2.69%

Canadian Dollar Denominated Debt | Revolving Credit Facility

Debt Instrument [Line Items]

Outstanding debt

$ 131,738

Canadian Dollar Denominated Debt | Revolving Credit Facility | CDOR

Debt Instrument [Line Items]

Average interest rate

3.23%

Euro Denominated Debt | Revolving Credit Facility

Debt Instrument [Line Items]

Outstanding debt

$ 167,537

$ 159,745

Euro Denominated Debt | Revolving Credit Facility | EUR LIBOR

Debt Instrument [Line Items]

Average interest rate

1.375%

1.25%

Initial Aggregate Principal | Unsecured 6.125% senior notes due October 15, 2019

Debt Instrument [Line Items]

Debt

$ 300,000

$ 300,000

Debt instrument, effective interest rate

6.139%

Initial Aggregate Principal | Unsecured 5.25% notes due June 1, 2045

Debt Instrument [Line Items]

Debt

$ 250,000

250,000

Additional Aggregate Principal | Unsecured 6.125% senior notes due October 15, 2019

Debt Instrument [Line Items]

Debt

150,000

Debt instrument, effective interest rate

4.934%

Unamortization of debt premium

700

Additional Aggregate Principal | Unsecured 5.25% notes due June 1, 2045

Debt Instrument [Line Items]

Debt

$ 50,000

$ 50,000

Debt instrument, effective interest rate

4.839%

4.839%

Unamortization of debt premium

$ 2,900

$ 3,000

[1]

Interest at May 31, 2020 was tied to LIBOR and averaged 1.5505% for USD denominated debt ($218,281), 1.4650% for AUD denominated debt ($37,199) and 1.3750% on EUR denominated debt ($167,537).  Interest at May 31, 2019 was tied to LIBOR and averaged 3.6805% for USD denominated debt ($14,268), 2.69% for AUD denominated debt ($34,558), 3.23% on CAD denominated debt ($131,738) and 1.25% on EUR denominated debt ($159,745).  At May 31, 2020 and 2019, the revolving credit facility is adjusted for debt issuance costs, net of amortization, for approximately $3.7 million and $3.9 million, respectively.

[2]

Includes the combination of the October 2009 initial issuance of $300.0 million aggregate principal amount and the May 2011 issuance of an additional $150.0 million aggregate principal amount of these notes. The effective interest rate on the notes issued in October 2009, including the amortization of the discount, was 6.139%. The additional $150.0 million aggregate principal amount of the notes due 2019 issued in May 2011 was adjusted for the unamortized premium received at issuance, which approximated $0.7 million at May 31, 2019. The premium effectively increased the proceeds from the financing. The effective interest rate on the $150.0 million notes issued in May 2011 is 4.934%. At May 31, 2019, the notes were adjusted for debt issuance costs, net of amortization, for approximately $0.2 million. During the second quarter of fiscal 2020, we used funds from our revolving credit facility to pay off our $450 million, 6.125% notes due in October 2019.

[3]

The $400.0 million face amount of the notes due 2027 is adjusted for the amortization of the original issue discount, which approximated $0.3 million and $0.4 million at May 31, 2020 and 2019, respectively.  The original issue discount effectively reduced the ultimate proceeds from the financing.  The effective interest rate on the notes, including the amortization of the discount, is 3.767%.  At May 31, 2020 and 2019, the notes are adjusted for debt issuance costs, net of amortization, for approximately $2.6 million and $3.0 million, respectively.

[4]

The $350.0 million aggregate principal amount of the notes due 2029 is adjusted for the amortization of the original issue discount, which approximated $0.5 million at May 31, 2020 and 2019. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, was 4.568%.  At May 31, 2020 and 2019, the notes were adjusted for debt issuance costs, net of amortization, for approximately $3.0 million and $3.5 million, respectively.

[5]

The $250.0 million face amount of the notes due 2045 is adjusted for the amortization of the original issue discount, which approximated $1.4 million at May 31, 2020 and 2019. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, is 5.29%. In March 2017, as a further issuance of the 5.25% notes due 2045, we closed an offering of $50.0 million aggregate principal, which is adjusted for the unamortized premium received at issuance, which approximated $2.9 million and $3.0 million at May 31, 2020 and 2019, respectively.  The premium effectively increased the proceeds from the financing.  The effective interest rate on the $50.0 million notes issued March 2017 is 4.839%.  At May 31, 2020 and 2019, the notes are adjusted for debt issuance costs, net of amortization, for approximately $2.9 million and $3.0 million, respectively.

[6]

The $300.0 million face amount of the notes due 2048 is adjusted for the debt issuance cost, net of amortization, which approximated $3.4 million and $3.5 million at May 31, 2020 and 2019, respectively. The effective interest rate on the notes is 4.25%.

Borrowings - Additional Informa

Borrowings - Additional Information (Detail) - USD ($)

Apr. 30, 2020

Feb. 21, 2020

Dec. 20, 2017

May 09, 2014

Dec. 09, 2013

Oct. 23, 2012

Nov. 30, 2018

May 31, 2020

May 31, 2019

May 31, 2015

May 22, 2020

Feb. 27, 2019

Mar. 02, 2017

May 29, 2015

Debt Instrument [Line Items]

Maturities of long-term debt in 2021

$ 80,900,000

Maturities of long-term debt in 2022

300,000

Maturities of long-term debt in 2023

700,600,000

Maturities of long-term debt in 2024

419,300,000

Maturities of long-term debt in 2025

0

Maturities of long-term debt thereafter

1,338,100,000

Credit facility, available liquidity

1,046,900,000

Liquidity available

$ 1,280,400,000

Consolidated indebtedness

66.80%

64.20%

Credit facility borrowing potential maximum capacity

$ 1,500,000,000

Convertible Notes

Debt Instrument [Line Items]

Debt, interest rate

2.25%

Note Interest payment frequency, term

Interest on the Convertible Notes semi-annually on June 15th and December 15th of each year

Notes maturity date

2020

Issuance of Debt

Debt Instrument [Line Items]

Covenant leverage ratio

425.00%

Accounts Receivable Securitization Program with Two Banks, through May 21, 2021

Debt Instrument [Line Items]

Credit facility borrowing maximum capacity

$ 200,000,000

$ 250,000,000

$ 250,000,000

Credit facility expiration date

May 21, 2021

Percentage of indirect economic interest held in SPE

100.00%

Outstanding balance

$ 80,000,000

Unsecured senior notes, maturity date

May 21, 2021

May 21, 2021

Unsecured 3.45% senior notes due November 15, 2022

Debt Instrument [Line Items]

Issuance of note

$ 300,000,000

$ 300,000,000

$ 300,000,000

Debt, interest rate

3.45%

3.45%

3.45%

Proceeds from issuance of note

$ 297,700,000

Unsecured senior notes, maturity date

Nov. 15, 2022

Nov. 15, 2022

Unsecured 5.25% notes due June 1, 2045

Debt Instrument [Line Items]

Issuance of note

$ 50,000,000

$ 250,000,000

Debt, interest rate

5.25%

[1]

5.25%

[1]

5.25%

5.25%

Note Interest payment frequency, term

Interest on the 2045 Notes is payable semiannually in arrears on June 1st and December 1st of each year at a rate of 5.250% per year

Unsecured senior notes, maturity date

[1]

Jun. 1, 2045

Jun. 1, 2045

Unsecured 3.75% notes due March 15, 2027

Debt Instrument [Line Items]

Issuance of note

$ 400,000,000

$ 400,000,000

$ 400,000,000

Debt, interest rate

3.75%

[2]

3.75%

[2]

3.75%

Note Interest payment frequency, term

Interest on the 2027 Notes is payable semiannually in arrears on March 15th and September 15th of each year, at a rate of 3.750% per year

Unsecured senior notes, maturity date

[2]

Mar. 15, 2027

Mar. 15, 2027

Unsecured 4.55% senior notes due March 1, 2029

Debt Instrument [Line Items]

Issuance of note

$ 350,000,000

$ 350,000,000

$ 350,000,000

Debt, interest rate

4.55%

[3]

4.55%

[3]

4.55%

Note Interest payment frequency, term

Interest on the 2029 Notes accrues from February 27, 2019 and is payable semiannually in arrears on March 1st and September 1st of each year, beginning September 1, 2019, at a rate of 4.550% per year.

Unsecured senior notes, maturity date

[3]

Mar. 1, 2029

Mar. 1, 2029

Unsecured 4.25% notes due January 15, 2048

Debt Instrument [Line Items]

Issuance of note

$ 300,000,000

$ 300,000,000

$ 300,000,000

Debt, interest rate

4.25%

4.25%

[4]

4.25%

[4]

Note Interest payment frequency, term

Interest on the 2048 Notes accrues from December 20, 2017 and is payable semiannually in arrears on January 15th and July 15th of each year, beginning July 15, 2018, at a rate of 4.250% per year.

Unsecured senior notes, maturity date

[4]

Jan. 15, 2048

Jan. 15, 2048

Unsecured 6.50% senior notes due February 15, 2018

Debt Instrument [Line Items]

Debt, interest rate

6.50%

Unsecured senior notes, maturity date

Feb. 15, 2018

Repayments of unsecured senior notes

$ 250,000,000

Unsecured 2.25% Convertible Senior Notes due December 15, 2020

Debt Instrument [Line Items]

Issuance of note

$ 205,000,000

Debt instrument, redemption price, percentage

100.00%

Debt instrument, conversion rate

19,221.062000

Debt instrument, conversion of common stock, debt amount

$ 1,000

Debt instrument, conversion price

$ 52.12

Debt conversion, description

The Convertible Notes became convertible at any time prior to the close of business on November 26, 2018

Settlement of convertible notes in cash

$ 204,600,000

Number of shares issued to settle convertible notes

598,601

Unsecured 2.25% Convertible Senior Notes due December 15, 2020 | Convertible Notes

Debt Instrument [Line Items]

Issuance of note

$ 205,000,000

Minimum | Issuance of Debt

Debt Instrument [Line Items]

Covenant leverage ratio

375.00%

Aggregate consideration for acquisition

$ 100,000,000

Interest coverage ratio

350.00%

Minimum | Accounts Receivable Securitization Program with Two Banks, through May 21, 2021

Debt Instrument [Line Items]

Monthly unused commitment fee

0.30%

Maximum | Accounts Receivable Securitization Program with Two Banks, through May 21, 2021

Debt Instrument [Line Items]

Monthly unused commitment fee

0.50%

Margin

Debt Instrument [Line Items]

Basis spread on variable rate

0.95%

Revolving Credit Facility

Debt Instrument [Line Items]

Credit facility, available liquidity

$ 877,000,000

Credit facility borrowing maximum capacity

$ 1,300,000,000

$ 800,000,000

Credit facility expiration date

Oct. 31, 2023

Dec. 5, 2019

Payment of basis point fee

0.10%

Interest coverage ratio

831.00%

Leverage ratio

289.00%

Unsecured senior notes, maturity date

[5]

Oct. 31, 2023

Oct. 31, 2023

Revolving Credit Facility | Minimum

Debt Instrument [Line Items]

Covenant leverage ratio

375.00%

Acquisition aggregate consideration

$ 100,000,000

Revolving Credit Facility | Maximum

Debt Instrument [Line Items]

Covenant leverage ratio

425.00%

Revolving Credit Facility | Euro-Rate | Investment Grade

Debt Instrument [Line Items]

Basis spread on variable rate

1.75%

Revolving Credit Facility | Euro-Rate | Non-Investment Grade

Debt Instrument [Line Items]

Basis spread on variable rate

2.00%

Revolving Credit Facility | Base Rate | Investment Grade

Debt Instrument [Line Items]

Basis spread on variable rate

0.75%

Revolving Credit Facility | Base Rate | Non-Investment Grade

Debt Instrument [Line Items]

Basis spread on variable rate

1.00%

New Credit Facility

Debt Instrument [Line Items]

Credit facility expiration date

Feb. 21, 2023

Debt, interest rate

0.612%

New Credit Facility | Foreign Borrower

Debt Instrument [Line Items]

Debt, interest rate

0.558%

New Credit Facility | Issuance of Debt

Debt Instrument [Line Items]

Covenant leverage ratio

375.00%

New Credit Facility | Term Loan

Debt Instrument [Line Items]

Credit facility borrowing maximum capacity

$ 300,000,000

New Credit Facility | Term Loan | Foreign Borrower

Debt Instrument [Line Items]

Credit facility borrowing maximum capacity

$ 100,000,000

New Credit Facility | Minimum | Issuance of Debt

Debt Instrument [Line Items]

Aggregate consideration for acquisition

$ 50,000,000

Interest coverage ratio

350.00%

New Credit Facility | Maximum | Issuance of Debt

Debt Instrument [Line Items]

Covenant leverage ratio

425.00%

425.00%

[1]

The $250.0 million face amount of the notes due 2045 is adjusted for the amortization of the original issue discount, which approximated $1.4 million at May 31, 2020 and 2019. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, is 5.29%. In March 2017, as a further issuance of the 5.25% notes due 2045, we closed an offering of $50.0 million aggregate principal, which is adjusted for the unamortized premium received at issuance, which approximated $2.9 million and $3.0 million at May 31, 2020 and 2019, respectively.  The premium effectively increased the proceeds from the financing.  The effective interest rate on the $50.0 million notes issued March 2017 is 4.839%.  At May 31, 2020 and 2019, the notes are adjusted for debt issuance costs, net of amortization, for approximately $2.9 million and $3.0 million, respectively.

[2]

The $400.0 million face amount of the notes due 2027 is adjusted for the amortization of the original issue discount, which approximated $0.3 million and $0.4 million at May 31, 2020 and 2019, respectively.  The original issue discount effectively reduced the ultimate proceeds from the financing.  The effective interest rate on the notes, including the amortization of the discount, is 3.767%.  At May 31, 2020 and 2019, the notes are adjusted for debt issuance costs, net of amortization, for approximately $2.6 million and $3.0 million, respectively.

[3]

The $350.0 million aggregate principal amount of the notes due 2029 is adjusted for the amortization of the original issue discount, which approximated $0.5 million at May 31, 2020 and 2019. The original issue discount effectively reduced the ultimate proceeds from the financing. The effective interest rate on the notes, including the amortization of the discount, was 4.568%.  At May 31, 2020 and 2019, the notes were adjusted for debt issuance costs, net of amortization, for approximately $3.0 million and $3.5 million, respectively.

[4]

The $300.0 million face amount of the notes due 2048 is adjusted for the debt issuance cost, net of amortization, which approximated $3.4 million and $3.5 million at May 31, 2020 and 2019, respectively. The effective interest rate on the notes is 4.25%.

[5]

Interest at May 31, 2020 was tied to LIBOR and averaged 1.5505% for USD denominated debt ($218,281), 1.4650% for AUD denominated debt ($37,199) and 1.3750% on EUR denominated debt ($167,537).  Interest at May 31, 2019 was tied to LIBOR and averaged 3.6805% for USD denominated debt ($14,268), 2.69% for AUD denominated debt ($34,558), 3.23% on CAD denominated debt ($131,738) and 1.25% on EUR denominated debt ($159,745).  At May 31, 2020 and 2019, the revolving credit facility is adjusted for debt issuance costs, net of amortization, for approximately $3.7 million and $3.9 million, respectively.

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	Jan. 01, 2018	Dec. 22, 2017	Dec. 21, 2017	Feb. 28, 2019	May 31, 2020	May 31, 2019	May 31, 2018
Income Tax [Line Items]
Corporate income tax rate		21.00%	35.00%
Corporate tax rate reduction effective date	Jan. 1, 2018
Percentage of blended rate	29.20%
Federal statutory rate					21.00%
Provisional income tax expense (benefit)						$ (8,100,000)	$ 7,300,000
Provisional income tax expense (benefit) related to provisional re-measurement of deferred tax assets and liabilities						(6,265,000)	(15,678,000)
Provisional income tax benefit for the partial reversal of existing deferred tax liabilities							44,900,000
Provisional charge for the transition tax on previously deferred foreign earnings							67,900,000
Income tax expense (benefit) related to re-measurement of deferred tax assets and liabilities						(6,300,000)
Benefit from reduction of transition tax on unremitted earnings from foreign subsidiaries				$ 1,800,000		(1,868,000)	67,899,000
Foreign capital loss carryforwards					$ 29,000,000
Total Valuation Allowances					66,855,000	55,274,000
Unrecognized tax benefits that would impact effective tax rate, if recognized					8,600,000	7,700,000	13,600,000
Accrued interest and penalties related to unrecognized tax benefits					2,900,000	3,000,000	$ 2,800,000
Unremitted foreign earnings					407,400,000	413,300,000
Deferred income tax liability					8,781,000	$ 18,795,000
Increase decrease in deferred tax liability					12,100,000
Remaining unremitted foreign earnings					905,100,000
Provision for deferred income taxes					0
Capital Loss Carryforwards
Income Tax [Line Items]
Tax credit carryforwards					47,000,000
Tax credit carry forward amount subject to expiration					$ 43,400,000
Tax credit carryforwards expiration year					2022
State
Income Tax [Line Items]
Net operating loss carryforwards					$ 6,100,000
Net operating loss carryforwards beginning expiration year					2021
Foreign
Income Tax [Line Items]
Tax credit carryforwards					$ 23,400,000
Tax credit carryforwards expiration year					2030
Foreign Net Operating Loss Carryforwards
Income Tax [Line Items]
Net operating loss carryforwards					$ 152,500,000
Net operating loss carryforwards beginning expiration year					2021
Net operating loss carryforwards subject to expiration					$ 8,300,000
Net operating loss carryforwards indefinite carry forward period					$ 144,200,000

Income before Income Taxes (Det

Income before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Income Tax Disclosure [Abstract]
Income Before Income Taxes, United States	$ 317,290	$ 215,201	$ 228,976
Income Before Income Taxes, Foreign	90,474	124,644	188,072
Income Before Income Taxes	$ 407,764	$ 339,845	$ 417,048

Provision (Benefit) for Income

Provision (Benefit) for Income Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Current:
U.S. federal	$ 65,195	$ 20,388	$ 27,206
State and local	17,743	8,623	8,617
Foreign	31,894	37,713	52,658
Total Current	114,832	66,724	88,481
Deferred:
U.S. federal	(19,212)	15,298	(8,054)
State and local	(3,031)	1,414	4,832
Foreign	10,093	(11,278)	(7,468)
Total Deferred	(12,150)	5,434	(10,690)
Provision for Income Taxes	$ 102,682	$ 72,158	$ 77,791

Significant Components of Defer

Significant Components of Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Deferred income tax assets related to:
Inventories	$ 12,341	$ 8,970
Allowance for losses	4,294	7,524
Accrued compensation and benefits	14,686	14,364
Accrued other expenses	15,107	17,036
Other long-term liabilities	22,030	15,947
Credit and net operating and capital loss carryforwards	65,994	63,395
Net unrealized loss on securities	16,892	12,391
Pension and other postretirement benefits	76,147	42,991
Total Deferred Income Tax Assets	227,491	182,618
Less: valuation allowances	(66,855)	(55,274)
Net Deferred Income Tax Assets	160,636	127,344
Deferred income tax (liabilities) related to:
Depreciation	(70,588)	(72,387)
Amortization of intangibles	(109,926)	(116,097)
Unremitted foreign earnings	(8,781)	(18,795)
Total Deferred Income Tax (Liabilities)	(189,295)	(207,279)
Deferred Income Tax Assets (Liabilities), Net	$ (28,659)	$ (79,935)

Reconciliation of Income Tax Ex

Reconciliation of Income Tax Expense (Benefit) Computed by Applying U.S. Statutory Federal Income Tax Rate against Income (Loss) before Income Taxes to Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Feb. 28, 2019	May 31, 2020	May 31, 2019	May 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense at the U.S. statutory federal income tax rate		$ 85,630	$ 71,367	$ 121,812
Impact of foreign operations		3,433	(1,571)	(16,276)
State and local income taxes, net		11,651	7,224	9,520
Impact of GILTI provisions		3,051	5,772
Domestic manufacturing deduction				(4,839)
Nondeductible business expense		2,005	2,259	2,473
Valuation allowance		14,008	7,021	(5,235)
Deferred tax liability for unremitted foreign earnings		(5,527)		(77,970)
Changes in unrecognized tax benefits		1,292	(8,480)
Other		(3,351)	1,195	737
FY19 GILTI impact of issued regulations		(4,348)
Equity-based compensation		(5,162)	(4,496)	(4,652)
Transition tax liability	$ 1,800		(1,868)	67,899
Remeasurement of U.S. deferred income taxes			(6,265)	(15,678)
Provision for Income Taxes		$ 102,682	$ 72,158	$ 77,791
Effective Income Tax Rate		25.20%	21.20%	18.70%

Activity Related to Unrecognize

Activity Related to Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Income Tax Disclosure [Abstract]
Unrecognized tax benefits, beginning balance	$ 8.1	$ 14.1	$ 13.2
Additions based on tax positions related to current year		0.1	5.1
Additions for tax positions of prior years	2	2
Reductions for tax positions of prior years	(0.9)	(7.9)	(4.5)
Foreign currency translation	(0.2)	(0.2)
Foreign currency translation			0.3
Unrecognized tax benefits, ending balance	$ 9	$ 8.1	$ 14.1

Stock Repurchase Program - Addi

Stock Repurchase Program - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018	May 31, 2021
Stock Repurchase Programs [Line Items]
Authorization of stock repurchase program		Jan. 8, 2008
Shares repurchased	2,041,847	3,286,907	0
Shares repurchased, value	$ 125,000	$ 200,222
Repurchase of common stock price per shares	$ 61.22	$ 60.92
Scenario Forecast
Stock Repurchase Programs [Line Items]
Capital to be returned to stockholders through share repurchases				$ 1,000,000
Stock repurchase program, remaining authorized repurchase, value				$ 600,000

Stock-Based Compensation Expens

Stock-Based Compensation Expense Included in Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 19,789	$ 31,154	$ 25,440
Stock-based compensation expense, included in restructuring expense	116	4,283	2,136
Total stock-based compensation cost	19,905	35,437	27,576
Income tax (benefit)	(2,784)	(6,937)	(7,178)
Total stock-based compensation cost, net of tax	17,121	28,500	20,398
SG&A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 19,789	$ 31,154	$ 25,440

Summary of Weighted-Average Ass

Summary of Weighted-Average Assumptions Related to SARs Grants (Detail) - SARs	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Schedule Of Weighted Average Assumptions [Line Items]
Risk-free interest rate	1.90%	2.90%	2.20%
Expected life of option	6 years 6 months	6 years 6 months	7 years
Expected dividend yield	2.30%	2.10%	2.20%
Expected volatility rate	22.40%	25.20%	26.20%

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Jul. 18, 2019	Oct. 03, 2018	Oct. 10, 2003	Oct. 31, 2019	May 31, 2020	May 31, 2019	May 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options outstanding					$ 61.8
Weighted-average remaining contractual life of options outstanding					6 years 1 month 9 days
Aggregate intrinsic value of options exercisable					$ 46.6
Weighted-average remaining contractual life of options exercisable					4 years 10 months 6 days
Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incentive plan approval date					Oct. 9, 2014
2014 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized stock-based compensation expense					$ 3.5
Shares of common stock authorized					6,000,000
Additional shares of common stock authorized				5,000,000
Shares of common stock available for grant				6,100,427
Directors Equity Incentive Plan 2003
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incentive plan approval date			Oct. 10, 2003
Share based compensation arrangement vesting period			3 years
Unamortized stock-based compensation expense					$ 1.9
Shares of common stock available for grant			500,000		7,200
Shares granted to Directors					$ 67.26	$ 60.50	$ 51.63
Shares granted					23,000
Shares of restricted stock vested					16,000
2007 Plan and 2014 Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted to Directors					$ 62.17	$ 60.01	$ 55.19
Shares granted					30,185
Shares outstanding					446,000	432,000
Employee Incentive Plan 2007
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized stock-based compensation expense					$ 0.6
Shares of common stock available for grant					0
SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock appreciation rights expected term					6 years 6 months	6 years 6 months	7 years
Unamortized stock-based compensation expense					$ 7.9
Unamortized stock-based compensation expense expected recognition period					2 years 3 months 18 days
Shares expected to vest					2,500,000
Shares expected to vest, weighted-average exercise price					$ 49.86
Shares expected to vest, weighted-average remaining contractual term					6 years 1 month 6 days
SARs | Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock appreciation rights expected term					10 years
Share based compensation arrangement vesting period					4 years
Stock options outstanding					2,482,500
Full Value Stock Award | 2014 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock authorized					3,000,000
Additional shares of common stock authorized				2,250,000
Performance Earned Restricted Stock Awards and Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement vesting period					3 years
Unamortized stock-based compensation expense					$ 15.8
Shares granted to Directors					$ 63.52	$ 60.36	$ 52.26
Shares granted					405,000
Shares of restricted stock vested					361,000
2018 Contingent Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized stock-based compensation expense					$ 0.6
Unamortized stock-based compensation expense expected recognition period					1 year
Shares granted to Directors		$ 60.50
Shares granted		192,000
Performance goals attainment period for PSUs awards		3 years
Shares outstanding					168,000
2018 Contingent Performance Stock Units | Earnings Before Interest Taxes
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		50.00%
2018 Contingent Performance Stock Units | Earnings Before Interest Taxes Margin
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		50.00%
2018 Contingent Performance Stock Units | Upon Achievement of Performance Goals | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		0.00%
2018 Contingent Performance Stock Units | Upon Achievement of Performance Goals | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		200.00%
2019 Contingent Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized stock-based compensation expense					$ 3.3
Unamortized stock-based compensation expense expected recognition period					2 years
Shares granted to Directors	$ 62.17
Shares granted	178,000
Performance goals attainment period for PSUs awards	3 years
Shares outstanding					178,000
2019 Contingent Performance Stock Units | Earnings Before Interest Taxes
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
2019 Contingent Performance Stock Units | Earnings Before Interest Taxes Margin
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
2019 Contingent Performance Stock Units | Upon Achievement of Performance Goals | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%
2019 Contingent Performance Stock Units | Upon Achievement of Performance Goals | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	200.00%
Nonvested Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized stock-based compensation expense					$ 25.7
Unamortized stock-based compensation expense expected recognition period					2 years 2 months 4 days
Shares granted to Directors					$ 63.62	$ 60.34	$ 52.62
Shares granted					458,000
Remaining weighted-average contractual term					2 years 2 months 4 days
Total fair value of shares vested					$ 20.8	$ 37.8	$ 29.9
Shares expected to vest					1,120,000
Shares expected to vest, weighted-average grant-date fair value					$ 58.03
Shares of restricted stock vested					421,000
Total intrinsic value of restricted shares converted					$ 26.8	$ 58.1	$ 7.6
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of restricted stock vested					420,571	832,717

Summary of Option and Share-Bas

Summary of Option and Share-Based Payment Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Stock Options And Stock Appreciation Rights
Weighted Average Exercise Price
Beginning balance	$ 46.44
Options granted	62.17
Options exercised	43.10
Ending balance	49.88	$ 46.44
Exercisable at May 31, 2020	$ 44.15
Number of Shares Under Option
Beginning balance	3,097
Options granted	340
Options exercised	(955)
Ending balance	2,482	3,097
Exercisable at May 31, 2020	1,520
SARs
Number of Shares Under Option
Weighted-average grant-date fair value per SAR	$ 11.59	$ 14.08	$ 12.90
Intrinsic value of options exercised	$ 9,620	$ 9,290	$ 11,100
Tax benefit from options exercised	5,940	3,210	3,400
Fair value of SARS vested	$ 12,270	$ 9,300	$ 6,500

Summary of Share-Based Performa

Summary of Share-Based Performance-Earned Restricted Stock and Performance Stock Units Activity (Detail) - Performance Earned Restricted Stock Awards and Performance Stock Units - $ / shares shares in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Weighted-Average Grant-Date Fair Value
Beginning balance	$ 54.90
Shares granted	63.52	$ 60.36	$ 52.26
Shares forfeited	55.80
Shares vested	51.11
Ending balance	$ 60.51	$ 54.90
Shares
Beginning balance	829
Shares granted	405
Shares forfeited	(8)
Shares vested	(361)
Ending balance	865	829

Share-Based Activity under 2003

Share-Based Activity under 2003 Plan (Detail) - Directors Equity Incentive Plan 2003 - $ / shares shares in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Weighted Average Grant-Date Fair Value
Beginning balance	$ 54.56
Shares granted to Directors	67.26	$ 60.50	$ 51.63
Shares vested	50.61
Ending balance	$ 60.25	$ 54.56
Shares
Beginning balance	55
Shares granted to directors	23
Shares vested	(16)
Ending balance	62	55

Awards and Restricted Stock Uni

Awards and Restricted Stock Units Issued under 2007 Plan and 2014 Omnibus Plan (Detail) - 2007 Plan and 2014 Omnibus Plan - $ / shares	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Weighted-Average Grant-Date Fair Value
Beginning Balance	$ 31.73
Shares granted	62.17	$ 60.01	$ 55.19
Shares exercised	33.96
Ending Balance	$ 33.82	$ 31.73
Shares
Beginning Balance	432,000
Shares granted	30,185
Shares exercised	(16,000)
Ending Balance	446,000	432,000

Summary of Activity for Nonvest

Summary of Activity for Nonvested Restricted Shares (Detail) - Nonvested Restricted Stock - $ / shares shares in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Weighted-Average Grant-Date Fair Value
Beginning balance	$ 52.35
Granted	63.62	$ 60.34	$ 52.62
Vested	49.42
Forfeited	55.80
Ending balance	$ 58.03	$ 52.35
Shares
Beginning balance	1,091
Granted	458
Vested	(421)
Forfeited	(8)
Ending balance	1,120	1,091

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 1,408,605	$ 1,633,538	$ 1,438,700
Deferred taxes	(23,403)	(19,068)	3,773
Ending Balance	1,264,663	1,408,605	1,633,538
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(370,495)	(300,013)	(308,415)
Other comprehensive income (loss)	(71,820)	(73,660)	10,989
Deferred taxes	1,583	3,178	(2,587)
Ending Balance	(440,732)	(370,495)	(300,013)
Pension And Other Postretirement Benefit Liability Adjustments, Net of Tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(211,645)	(157,495)	(166,724)
Other comprehensive income (loss)	(86,347)	(70,785)	11,375
Deferred taxes	20,275	16,635	(2,146)
Ending Balance	(277,717)	(211,645)	(157,495)
Unrealized Gain (Loss) On Derivatives, Net of Tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	4,379	(131)	16
Other comprehensive income (loss)	(6,315)	4,713	(359)
Deferred taxes	1,865	(203)	212
Ending Balance	(71)	4,379	(131)
Unrealized Gain (Loss) On Securities, Net of Tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	133	(1,409)	1,137
Reclassification adjustments for gains (losses) included in net income, net of taxes of $151, $591, $401 in 2020, 2019 and 2018		1,777	(1,244)
Other comprehensive income (loss)	1,210	307	(2,050)
Deferred taxes	(320)	(542)	748
Ending Balance	1,023	133	(1,409)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(577,628)	(459,048)	(473,986)
Reclassification adjustments for gains (losses) included in net income, net of taxes of $151, $591, $401 in 2020, 2019 and 2018		1,777	(1,244)
Other comprehensive income (loss)	(163,272)	(139,425)	19,955
Deferred taxes	23,403	19,068	(3,773)
Ending Balance	$ (717,497)	$ (577,628)	$ (459,048)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (loss) (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Reclassification adjustments for gains (losses) included in net income, taxes	$ 0	$ 151	$ 591

Reconciliation of Numerator and

Reconciliation of Numerator and Denominator of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended																12 Months Ended
		May 31, 2020		Feb. 29, 2020		Nov. 30, 2019		Aug. 31, 2019		May 31, 2019		Feb. 28, 2019		Nov. 30, 2018		Aug. 31, 2018		May 31, 2020	May 31, 2019	May 31, 2018
Numerator for earnings per share:
Net income attributable to RPM International Inc. stockholders		$ 109,314	[1]	$ 11,853	[1]	$ 77,030	[1]	$ 106,188	[1]	$ 133,380	[2]	$ 14,190	[2]	$ 49,224	[2]	$ 69,764	[2]	$ 304,385	$ 266,558	$ 337,770
Less: Allocation of earnings and dividends to participating securities																		(1,956)	(1,514)	(3,858)
Net income available to common shareholders - basic																		302,429	265,044	333,912
Reverse: Allocation of earnings and dividends to participating securities																		1,956	1,514	3,858
Add: Income effect of contingently issuable shares																			3,655	5,673
Net income available to common shareholders - diluted																		$ 304,385	$ 270,213	$ 343,443
Denominator for basic and diluted earnings per share:
Basic weighted average common shares																		128,468	130,552	131,179
Average diluted options																		1,506	1,838	2,064
Net issuable common share equivalents	[3]																		1,943	3,928
Total shares for diluted earnings per share	[4]																	129,974	134,333	137,171
Earnings Per Share of Common Stock Attributable to RPM International Inc. Stockholders:
Method used to calculate basic earnings per share																		Two-Class	Two-Class	Two-Class
Method used to calculate diluted earnings per share																		Treasury	Treasury	Treasury
Basic Earnings Per Share of Common Stock		$ 0.85		$ 0.09		$ 0.60		$ 0.82		$ 1.03		$ 0.11		$ 0.37		$ 0.52		$ 2.35	$ 2.03	$ 2.55
Diluted Earnings Per Share of Common Stock		$ 0.84		$ 0.09		$ 0.59		$ 0.82		$ 1.02		$ 0.11		$ 0.37		$ 0.52		$ 2.34	$ 2.01	$ 2.50
[1]	Reflects inventory-related charges of $28.8 million in our Consumer reportable segment resulting from SKU rationalization, excess and obsolescence, and exiting unprofitable product lines and regions and $3.2 million in our PCG segment resulting from the exit of unprofitable product lines and regions.  Also reflects restructuring charges totaling $33.1 million that were incurred throughout fiscal 2020, as further described in Note B, “Restructuring”.
[2]	Reflects inventory-related charges of $10.5 million in our Consumer reportable segment resulting from more proactive management of inventory and $9.0 million and $1.0 million in inventory reductions related to restructuring activities in our PCG and CPG reportable segments, respectively.  Also reflects restructuring charges totaling $42.3 million that were incurred throughout fiscal 2019, as further described in Note B, “Restructuring”.
[3]	Represents the number of shares that would be issued if our contingently convertible notes had been converted.  We included these shares in the calculation of diluted EPS as the conversion of the notes were eligible to be settled, at our election, in cash, shares of our common stock, or a combination of cash and shares of our common stock.  On November 27, 2018, we redeemed all of our 2.25% convertible senior notes due 2020, primarily for cash, but also issued 598,601 shares of our common stock in the transaction
[4]	For the years ended May 31, 2020, 2019 and 2018, approximately 340,000, 862,500 and 799,362 shares of stock, respectively, granted under stock-based compensation plans were excluded from the calculation of diluted EPS, as the effect would have been anti-dilutive.

Reconciliation of Numerator a_2

Reconciliation of Numerator and Denominator of Basic and Diluted Earnings Per Share (Parenthetical) (Detail) - shares	Nov. 27, 2018	May 31, 2020	May 31, 2019	May 31, 2018	Nov. 30, 2018
Stock-Based Compensation Plans
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Shares excluded from the calculation of diluted earnings per share		340,000	862,500	799,362
2.25% Convertible Senior Notes
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Debt instrument redemption date	Nov. 27, 2018
Debt, interest rate	2.25%				2.25%
Debt instrument maturity year	2020
Debt conversion, common stock shares issued	598,601

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Lessee Lease Description [Line Items]
Lessee, operating lease, option to extend description	Some leases include one or more options to renew, generally at our sole discretion, with renewal terms that can extend the lease term from one to five years or more.
Lessee, operating lease, existence of option to extend	true
Lessee, operating lease, option to terminate description	In addition, certain leases contain termination options, where the rights to terminate are held by either us, the lessor, or both parties.
Lessee, operating lease, existence of option to terminate	true
Lease costs	$ 84.2
Operating lease costs	73.7
Other costs	10.5
Rental expenses for all operating lease		$ 64.9	$ 64.3
Operating lease obligations	69.4
ROU asset recognized in exchange for operating lease liability	$ 61.6
Operating lease, weighted-average remaining lease term	9 years 1 month 6 days
Operating lease, weighted-average discount rate	3.70%
Operating lease liability, current	$ 52.6
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherAccruedLiabilitiesCurrent
Minimum
Lessee Lease Description [Line Items]
Lessee, operating lease, renewal term	1 year
Maximum
Lessee Lease Description [Line Items]
Lessee, operating lease, renewal term	5 years

Schedule of Future Undiscounted

Schedule of Future Undiscounted Cash Flows and Reconciliation to Lease Liabilities (Detail) $ in Thousands	May 31, 2020USD ($)
Leases [Abstract]
2021	$ 61,328
2022	50,452
2023	38,921
2024	31,572
2025	27,771
Thereafter	144,982
Total lease payments	355,026
Less imputed interest	57,746
Total present value of lease liabilities	$ 297,280

Schedule of Summary of Future M

Schedule of Summary of Future Minimum Lease Commitments (Detail) $ in Thousands	May 31, 2019USD ($)
Leases [Abstract]
2020	$ 59,163
2021	49,731
2022	40,339
2023	32,798
2024	27,716
Thereafter	119,607
Total Minimum Lease Commitments	$ 329,354

Pension Plans - Additional Info

Pension Plans - Additional Information (Detail) - Pension Benefits - USD ($)	1 Months Ended	12 Months Ended
	Feb. 29, 2020	May 31, 2020	May 31, 2019	May 31, 2018
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Average compensation with accrued benefits vesting period			5 years
Matching contribution charged to income		$ 21,100,000	$ 19,400,000	$ 18,700,000
Estimated benefits payable in the first year		71,000,000
Estimated benefits payable in the second year		71,000,000
Estimated benefits payable in the third year		70,600,000
Estimated benefits payable in the fourth year		70,100,000
Estimated benefits payable in the fifth year		67,300,000
Estimated benefits payable in the years thereafter		339,200,000
U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Contribution to retirement plans in the next fiscal year		8,000
Additional contribution to retirement plan in the current	$ 51,500,000	52,182,000	57,821,000
Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Contribution to retirement plans in the next fiscal year		6,700,000
Additional contribution to retirement plan in the current		$ 6,331,000	$ 6,770,000

Retirement-Related Benefit Plan

Retirement-Related Benefit Plans' Impact on Income Before Income Taxes (Detail) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 39,425	$ 37,528	$ 37,859
Interest cost	20,415	21,987	17,518
Expected return on plan assets	(34,291)	(33,867)	(32,342)
Prior service cost	9	118	117
Net actuarial losses recognized	18,516	13,087	14,470
Net Pension Cost	44,074	38,853	37,622
Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	5,400	4,693	4,620
Interest cost	4,842	5,420	5,025
Expected return on plan assets	(7,118)	(7,907)	(8,270)
Prior service cost	(36)	(30)	(31)
Net actuarial losses recognized	2,029	1,229	1,758
Curtailment/settlement losses	86	89	128
Net Pension Cost	$ 5,203	$ 3,494	$ 3,230

Changes in Benefits Obligations

Changes in Benefits Obligations and Plan Assets, Pension (Detail) - Pension Benefits - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 29, 2020	May 31, 2020	May 31, 2019	May 31, 2018
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year		$ 660,277	$ 617,255
Service cost		39,425	37,528	$ 37,859
Interest cost		20,415	21,987	17,518
Benefits paid		(41,186)	(45,917)
Plan amendments			11
Actuarial losses		83,808	29,413
Benefit Obligation at End of Year		762,739	660,277	617,255
Balance at Beginning of Period		496,865	487,233
Actual return on plan assets		8,689	(2,272)
Employer contributions	$ 51,500	52,182	57,821
Benefits paid		(41,186)	(45,917)
Balance at End of Period		516,550	496,865	487,233
(Deficit) of plan assets versus benefit obligations at end of year		(246,189)	(163,412)
Net Amount Recognized		(246,189)	(163,412)
Accumulated Benefit Obligation		662,197	553,392
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year		205,967	194,149
Service cost		5,400	4,693	4,620
Interest cost		4,842	5,420	5,025
Benefits paid		(6,269)	(7,488)
Participant contributions		1,106	1,003
Plan amendments		(893)	(33)
Plan combination		922
Plan settlements/curtailments		(288)	(607)
Actuarial losses		2,718	17,286
Premiums paid		(99)	(97)
Currency exchange rate changes		(3,128)	(8,359)
Benefit Obligation at End of Year		210,278	205,967	194,149
Balance at Beginning of Period		187,112	188,960
Actual return on plan assets		9,899	6,737
Employer contributions		6,331	6,770
Participant contributions		1,106	1,003
Benefits paid		(6,269)	(7,488)
Plan combination		182
Premiums paid		(99)	(97)
Plan settlements/curtailments		(281)	(580)
Currency exchange rate changes		(3,107)	(8,193)
Balance at End of Period		194,874	187,112	$ 188,960
(Deficit) of plan assets versus benefit obligations at end of year		(15,404)	(18,855)
Net Amount Recognized		(15,404)	(18,855)
Accumulated Benefit Obligation		$ 197,167	$ 192,533

Amounts Recognized in Consolida

Amounts Recognized in Consolidated Balance Sheet, Pension (Detail) - Pension Benefits - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	$ (8)	$ (8)
Noncurrent liabilities	(246,181)	(163,404)
Net Amount Recognized	(246,189)	(163,412)
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Noncurrent assets	13,395	9,047
Current liabilities	(547)	(435)
Noncurrent liabilities	(28,252)	(27,467)
Net Amount Recognized	$ (15,404)	$ (18,855)

Relationship between Plans Bene

Relationship between Plans Benefit Obligations and Assets (Detail) - Pension Benefits - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Plans with projected benefit obligations in excess of plan assets, benefit obligation	$ 762,739	$ 660,277
Plans with accumulated benefit obligations in excess of plan assets, benefit obligation	662,197	553,392
Plans with projected benefit obligations in excess of plan assets, plan asset	516,550	496,865
Plans with accumulated benefit obligations in excess of plan assets, plan asset	516,550	496,865
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Plans with projected benefit obligations in excess of plan assets, benefit obligation	163,589	162,824
Plans with accumulated benefit obligations in excess of plan assets, benefit obligation	150,478	149,390
Plans with assets in excess of projected benefit obligations	46,689	43,143
Plans with assets in excess of accumulated benefit obligations	46,689	43,143
Plans with projected benefit obligations in excess of plan assets, plan asset	134,791	134,921
Plans with accumulated benefit obligations in excess of plan assets, plan asset	134,598	134,921
Plans with assets in excess of projected benefit obligations, plan asset	60,083	52,191
Plans with assets in excess of accumulated benefit obligations, plan asset	$ 60,276	$ 52,191

Pretax Net Actuarial Loss and P

Pretax Net Actuarial Loss and Prior Service (Costs) Recognized in Accumulated Other Comprehensive Income (Loss) not Affecting Retained Earnings,Pension (Detail) - Pension Benefits - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
U.S. Plans
Schedule of Net Periodic Benefit Costs and Assumptions for Defined Benefit Postretirement Plans [Line Items]
Net actuarial loss	$ (341,179)	$ (250,286)
Prior service (costs) credits	(20)	(28)
Total recognized in accumulated other comprehensive income not affecting retained earnings	(341,199)	(250,314)
Non-U.S. Plans
Schedule of Net Periodic Benefit Costs and Assumptions for Defined Benefit Postretirement Plans [Line Items]
Net actuarial loss	(48,090)	(51,184)
Prior service (costs) credits	1,098	224
Total recognized in accumulated other comprehensive income not affecting retained earnings	$ (46,992)	$ (50,960)

Changes Recognized in Other Com

Changes Recognized in Other Comprehensive Income, Pension (Detail) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019
U.S. Plans
Changes in plan assets and benefit obligations recognized in other comprehensive income:
Prior service cost		$ 11
Net loss (gain) arising during the year	$ 109,409	65,552
Amounts recognized as a component of net periodic benefit cost:
Amortization or curtailment recognition of prior service (cost) benefit	(9)	(118)
Amortization or settlement recognition of net (loss)	(18,516)	(13,087)
Total recognized in other comprehensive loss (income)	90,884	52,358
Non-U.S. Plans
Changes in plan assets and benefit obligations recognized in other comprehensive income:
Prior service cost	(893)	(33)
Net loss (gain) arising during the year	(70)	18,456
Effect of exchange rates on amounts included in AOCI	(922)	(1,593)
Amounts recognized as a component of net periodic benefit cost:
Amortization or curtailment recognition of prior service (cost) benefit	36	30
Amortization or settlement recognition of net (loss)	(2,115)	(1,345)
Total recognized in other comprehensive loss (income)	$ (3,964)	$ 15,515

Amounts in Accumulated Other Co

Amounts in Accumulated Other Comprehensive Income (Loss) that have not yet been Recognized in Net Periodic Pension Cost, but are Expected to be Recognized in Consolidated Statements of Income (Detail) - Pension Benefits $ in Thousands	May 31, 2020USD ($)
U.S. Plans
Schedule of Pension Amounts in Accumulated Other Comprehensive Income (Loss) [Line Items]
Net actuarial loss	$ (27,457)
Prior service (cost) credit	(8)
Non-U.S. Plans
Schedule of Pension Amounts in Accumulated Other Comprehensive Income (Loss) [Line Items]
Net actuarial loss	(2,106)
Prior service (cost) credit	$ 141

Weighted-Average Assumptions us

Weighted-Average Assumptions used to Determine Benefit Obligations and Net Periodic Pension Cost (Detail) - Pension Benefits	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Year-End Benefit Obligations, Discount rate	2.77%	3.64%
Year-End Benefit Obligations, Rate of compensation increase	3.19%	3.80%
Net Periodic Pension Cost, Discount rate	3.65%	4.12%	3.81%
Net Periodic Pension Cost, Expected return on plan assets	7.40%	7.40%	7.89%
Net Periodic Pension Cost, Rate of compensation increase	3.80%	3.80%	3.80%
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Year-End Benefit Obligations, Discount rate	2.49%	2.61%
Year-End Benefit Obligations, Rate of compensation increase	2.86%	2.86%
Net Periodic Pension Cost, Discount rate	2.61%	3.09%	2.79%
Net Periodic Pension Cost, Expected return on plan assets	3.91%	4.30%	4.37%
Net Periodic Pension Cost, Rate of compensation increase	2.86%	2.85%	3.00%

Weighted-Average Actual Target

Weighted-Average Actual Target Allocation of Plan Assets (Detail) - Pension Benefits - USD ($) $ in Thousands		May 31, 2020	May 31, 2019	May 31, 2018
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation		100.00%
Actual Asset Allocation		$ 516,550	$ 496,865	$ 487,233
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation		100.00%
Actual Asset Allocation		$ 194,874	187,112	$ 188,960
Equity securities | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation		55.00%
Actual Asset Allocation		$ 261,000	295,100
Equity securities | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation		33.00%
Actual Asset Allocation		$ 79,300	79,900
Fixed income securities | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation		25.00%
Actual Asset Allocation		$ 106,400	83,800
Fixed income securities | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation		48.00%
Actual Asset Allocation		$ 88,200	79,300
Multi-class | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation		20.00%
Actual Asset Allocation		$ 118,200	78,100
Cash | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Actual Asset Allocation	[1]	30,800	39,700
Cash | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Actual Asset Allocation		100	100
Real Estate | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Actual Asset Allocation		$ 200	200
Real Estate | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Target Allocation		19.00%
Actual Asset Allocation		$ 27,300	$ 27,800
[1]	The larger than target cash position at May 31, 2020 results from our February 2020 contribution to the RPM International Inc. Retirement Plan because of our plans to invest the February contribution over a period of time, due to dollar cost averaging.

Pension Plan Assets Categorized

Pension Plan Assets Categorized Using Fair Value Hierarchy (Detail) - Pension Benefits - USD ($) $ in Thousands	May 31, 2020	May 31, 2019	May 31, 2018
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	$ 516,550	$ 496,865	$ 487,233
U.S. Plans | U.S. Treasury and other government
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	12,973	13,854
U.S. Plans | State and Municipal Debt Obligations
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	508	386
U.S. Plans | Foreign Covered Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	715	1,031
U.S. Plans | Mortgage-backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	23,824	20,075
U.S. Plans | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	34,317	26,204
U.S. Plans | Mid Cap Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		13,392
U.S. Plans | Large Cap Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	19,589
U.S. Plans | Small Cap Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		15,720
U.S. Plans | Equity Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	241,426	265,969
U.S. Plans | Mutal Funds - Multi-class
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	118,205	78,143
U.S. Plans | Debt Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	33,993	22,215
U.S. Plans | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	30,830	39,704
U.S. Plans | Limited Partner
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	170	172
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	194,874	187,112	188,960
Non-U.S. Plans | Foreign Covered Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	603	227
Non-U.S. Plans | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	67	123
Non-U.S. Plans | Pooled Equity Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	78,472	78,733
Non-U.S. Plans | Pooled Funds Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	87,610	79,061
Non-U.S. Plans | Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	27,267	27,843
Non-U.S. Plans | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	855	1,125
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	50,419	68,816
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Plans | Mid Cap Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		13,392
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Plans | Large Cap Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	19,589
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Plans | Small Cap Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets		15,720
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Plans | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	30,830	39,704
Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	67	123
Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-U.S. Plans | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	67	123
Significant Other Observable Inputs (Level 2) | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	465,961	427,877
Significant Other Observable Inputs (Level 2) | U.S. Plans | U.S. Treasury and other government
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	12,973	13,854
Significant Other Observable Inputs (Level 2) | U.S. Plans | State and Municipal Debt Obligations
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	508	386
Significant Other Observable Inputs (Level 2) | U.S. Plans | Foreign Covered Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	715	1,031
Significant Other Observable Inputs (Level 2) | U.S. Plans | Mortgage-backed securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	23,824	20,075
Significant Other Observable Inputs (Level 2) | U.S. Plans | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	34,317	26,204
Significant Other Observable Inputs (Level 2) | U.S. Plans | Equity Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	241,426	265,969
Significant Other Observable Inputs (Level 2) | U.S. Plans | Mutal Funds - Multi-class
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	118,205	78,143
Significant Other Observable Inputs (Level 2) | U.S. Plans | Debt Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	33,993	22,215
Significant Other Observable Inputs (Level 2) | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	167,540	159,146
Significant Other Observable Inputs (Level 2) | Non-U.S. Plans | Foreign Covered Bonds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	603	227
Significant Other Observable Inputs (Level 2) | Non-U.S. Plans | Pooled Equity Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	78,472	78,733
Significant Other Observable Inputs (Level 2) | Non-U.S. Plans | Pooled Funds Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	87,610	79,061
Significant Other Observable Inputs (Level 2) | Non-U.S. Plans | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	855	1,125
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	27,437	28,015	$ 28,448
Significant Unobservable Inputs (Level 3) | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	170	172
Significant Unobservable Inputs (Level 3) | U.S. Plans | Limited Partner
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	170	172
Significant Unobservable Inputs (Level 3) | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	27,267	27,843
Significant Unobservable Inputs (Level 3) | Non-U.S. Plans | Insurance Contracts
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Pension plans with Plan Assets	$ 27,267	$ 27,843

Activity that Occurred for Leve

Activity that Occurred for Level Three Assets (Detail) - Significant Unobservable Inputs (Level 3) - Pension Benefits - USD ($) $ in Thousands		12 Months Ended
		May 31, 2020	May 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Balance at Beginning of Period		$ 28,015	$ 28,448
Actual Return on Plan Assets For Assets Still Held at Reporting Date		(691)	1,228
Settlements	[1]	113	(1,661)
Balance at End of Period		$ 27,437	$ 28,015
[1]	Includes the impact of exchange rate changes during the year.

Components of Net Postretiremen

Components of Net Postretirement Expense (Detail) - Postretirement Benefits - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Domestic
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost on the accumulated obligation	$ 149	$ 192	$ 173
Prior service (credit)	(219)	(219)	(220)
Net actuarial (gains) losses	(66)	(26)	24
Net Pension Cost	(136)	(53)	(23)
Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost - benefits earned during the period	1,661	1,507	1,307
Interest cost on the accumulated obligation	1,089	1,122	939
Net actuarial (gains) losses	611	442	332
Net Pension Cost	$ 3,361	$ 3,071	$ 2,578

Changes in Benefit Obligation (

Changes in Benefit Obligation (Detail) - Postretirement Benefits - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Domestic
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation at beginning of year	$ 4,990	$ 5,368
Interest cost	149	192	$ 173
Benefit payments	(1,659)	(287)
Actuarial (gains) losses	702	(283)
Benefit Obligation at End of Year	4,182	4,990	5,368
Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation at beginning of year	37,663	33,281
Service cost	1,661	1,507	1,307
Interest cost	1,089	1,122	939
Benefit payments	(639)	(664)
Actuarial (gains) losses	(683)	3,801
Currency exchange rate changes	(702)	(1,384)
Benefit Obligation at End of Year	$ 38,389	$ 37,663	$ 33,281

Amounts Recognized in Consoli_2

Amounts Recognized in Consolidated Balance Sheets, Postretirement (Detail) - Postretirement Benefits - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Domestic
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Current liabilities	$ (385)	$ (423)
Noncurrent liabilities	(3,797)	(4,567)
Net Amount Recognized	(4,182)	(4,990)
Non-U.S. Plans
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]
Current liabilities	(805)	(741)
Noncurrent liabilities	(37,584)	(36,922)
Net Amount Recognized	$ (38,389)	$ (37,663)

Pretax Net Actuarial Loss, Prio

Pretax Net Actuarial Loss, Prior Service (Cost) and Transition Assets/(Obligation) Recognized in Accumulated Other Comprehensive Income (Loss) not Affecting Retained Earnings, Postretirement (Detail) - Postretirement Benefits - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Domestic
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net actuarial gain (loss)	$ (386)	$ 381
Prior service credits	448	667
Total recognized in accumulated other comprehensive income not affecting retained earnings	62	1,048
Non-U.S. Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net actuarial gain (loss)	(11,331)	(12,891)
Total recognized in accumulated other comprehensive income not affecting retained earnings	$ (11,331)	$ (12,891)

Changes Recognized in Other C_2

Changes Recognized in Other Comprehensive Income, Postretirement Benefits (Detail) - Postretirement Benefits - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019
Domestic
Changes in plan assets and benefit obligations recognized in other comprehensive income:
Net loss (gain) arising during the year	$ 702	$ (283)
Amounts recognized as a component of net periodic benefit cost:
Amortization or curtailment recognition of prior service credit	219	219
Amortization or settlement recognition of net gain (loss)	66	26
Total recognized in other comprehensive loss (income)	987	(38)
Non-U.S. Plans
Changes in plan assets and benefit obligations recognized in other comprehensive income:
Net loss (gain) arising during the year	(683)	3,801
Effect of exchange rates on amounts included in AOCI	(266)	(419)
Amounts recognized as a component of net periodic benefit cost:
Amortization or settlement recognition of net gain (loss)	(611)	(442)
Total recognized in other comprehensive loss (income)	$ (1,560)	$ 2,940

Weighted-Average Assumptions _2

Weighted-Average Assumptions used to Determine Benefit Obligations and Net Periodic Postretirement Cost (Detail) - Postretirement Benefits	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Domestic
Health Care Cost Trend Rates Assumptions [Line Items]
Year-End Benefit Obligations, Discount rate	2.44%	3.44%
Year-End Benefit Obligations, Current healthcare cost trend rate	6.68%	7.29%
Year-End Benefit Obligations, Ultimate healthcare cost trend rate	4.36%	4.36%
Year-End Benefit Obligation, Year ultimate healthcare cost trend rate will be realized	2037	2037
Net Periodic Postretirement Cost, Discount rate	3.44%	4.03%	3.61%
Net Periodic Postretirement Cost, Healthcare cost trend rate	7.29%	7.86%	14.75%
Net Periodic Postretirement Cost, Ultimate healthcare cost trend rate	4.36%	4.36%	4.36%
Net Periodic Postretirement Cost, Year ultimate healthcare cost trend rate will be realized	2037	2037	2037
Non-U.S. Plans
Health Care Cost Trend Rates Assumptions [Line Items]
Year-End Benefit Obligations, Discount rate	3.32%	3.22%
Year-End Benefit Obligations, Current healthcare cost trend rate	5.73%	5.77%
Year-End Benefit Obligations, Ultimate healthcare cost trend rate	3.70%	3.70%
Year-End Benefit Obligation, Year ultimate healthcare cost trend rate will be realized	2040	2040
Net Periodic Postretirement Cost, Discount rate	3.22%	3.70%	3.61%
Net Periodic Postretirement Cost, Healthcare cost trend rate	5.77%	6.02%	5.85%
Net Periodic Postretirement Cost, Ultimate healthcare cost trend rate	3.70%	4.20%	4.20%
Net Periodic Postretirement Cost, Year ultimate healthcare cost trend rate will be realized	2040	2032	2030

Increasing or Decreasing Curren

Increasing or Decreasing Current Health Care Cost Trend (Detail) - Postretirement Benefits - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019
Domestic
1% Increase (Decrease) in healthcare cost trend rate
1% Increase in trend rate, accumulated benefit obligation	$ 130	$ 124
1% Increase in trend rate, postretirement cost	4	7
1% Decrease in trend rate, accumulated benefit obligation	(117)	(112)
1% Decrease in trend rate, postretirement cost	(3)	(6)
Non-U.S. Plans
1% Increase (Decrease) in healthcare cost trend rate
1% Increase in trend rate, accumulated benefit obligation	7,452	8,300
1% Increase in trend rate, postretirement cost	814	731
1% Decrease in trend rate, accumulated benefit obligation	(5,843)	(6,390)
1% Decrease in trend rate, postretirement cost	$ (595)	$ (539)

Postretirement Benefits - Addit

Postretirement Benefits - Additional Information (Detail) - Postretirement Benefits $ in Millions	May 31, 2020USD ($)
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items]
Estimated benefits payable in the years thereafter	$ 8.9
Minimum
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items]
Estimated benefits payable in the first year	1.2
Estimated benefits payable in the second year	1.2
Estimated benefits payable in the third year	1.2
Estimated benefits payable in the fourth year	1.2
Estimated benefits payable in the fifth year	1.2
Maximum
Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items]
Estimated benefits payable in the first year	1.5
Estimated benefits payable in the second year	1.5
Estimated benefits payable in the third year	1.5
Estimated benefits payable in the fourth year	1.5
Estimated benefits payable in the fifth year	$ 1.5

Accrued Loss Reserves (Detail)

Accrued Loss Reserves (Detail) - USD ($) $ in Thousands	May 31, 2020	May 31, 2019
Schedule Of Accrued Liabilities [Line Items]
Accrued losses	$ 20,021	$ 19,899
Accrued Loss Reserves - Noncurrent	34,654	37,554
Accrued product liability reserves
Schedule Of Accrued Liabilities [Line Items]
Accrued losses	10,458	11,739
Accrued Loss Reserves - Noncurrent	27,016	29,942
Accrued warranty reserves
Schedule Of Accrued Liabilities [Line Items]
Accrued losses	7,593	7,013
Accrued Loss Reserves - Noncurrent	3,513	3,401
Accrued environmental reserves
Schedule Of Accrued Liabilities [Line Items]
Accrued losses	1,970	1,147
Accrued Loss Reserves - Noncurrent	$ 4,125	$ 4,211

Changes in Accrued Warranty Bal

Changes in Accrued Warranty Balances (Detail) - USD ($) $ in Thousands		12 Months Ended
		May 31, 2020	May 31, 2019	May 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Beginning Balance		$ 10,414	$ 11,721	$ 19,149
Deductions	[1]	(20,762)	(22,262)	(26,199)
Provision charged to expense		21,454	20,955	17,924
Acquisitions				847
Ending Balance		$ 11,106	$ 10,414	$ 11,721
[1]	Primarily claims paid during the year.

Contingencies and Other Accru_3

Contingencies and Other Accrued Losses - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Feb. 28, 2013	Nov. 30, 2012	Aug. 31, 2012	May 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Increase (decrease) in net income due to restatement effect	$ 18	$ (10.8)	$ (7.2)
Litigation settlement amount				$ 6.5

Revenue - Additional Informatio

Revenue - Additional Information (Detail) $ in Thousands

3 Months Ended

12 Months Ended

May 31, 2020USD ($)

Feb. 29, 2020USD ($)

Nov. 30, 2019USD ($)

Aug. 31, 2019USD ($)

May 31, 2019USD ($)

Feb. 28, 2019USD ($)

Nov. 30, 2018USD ($)

Aug. 31, 2018USD ($)

May 31, 2020USD ($)Segment

May 31, 2019USD ($)Segment

May 31, 2018USD ($)

[1]

Disaggregation Of Revenue [Line Items]

Number of reportable segments | Segment

4

3

Revenue performance obligation description of payment terms

Payment terms and conditions vary by contract type, although our customers’ payment terms generally include a requirement to pay within 30 to 60 days of fulfilling our performance obligations.

Revenue, Practical Expedient, Financing Component [true false]

false

Net contract assets (liabilities)

$ 4,229

Net Sales

$ 1,458,962

$ 1,173,976

$ 1,401,292

$ 1,472,764

$ 1,601,401

$ 1,140,630

$ 1,362,531

$ 1,459,989

5,506,994

[1]

$ 5,564,551

[1]

$ 5,321,643

Long-term deferred revenue

66,000

$ 66,500

$ 66,000

$ 66,500

General Contracting And Roofing Services

Disaggregation Of Revenue [Line Items]

Net Sales

$ 22,100

[1]

It is not practicable to obtain the information needed to disclose revenues attributable to each of our product lines.

Summary of Accounts Receivable

Summary of Accounts Receivable Net of Allowances and Net Contract Assets (Liabilities) (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019
Disaggregation Of Revenue [Line Items]
Accounts receivable, less allowance	$ 1,137,957	$ 1,232,350
Contract assets	25,249	21,628
Contract liabilities - short-term	(25,288)	(25,896)
Net Contract Liabilities	(39)	$ (4,268)
Change in Contract with Customer, Asset and Liability [Abstract]
Change in accounts receivable, less allowance	(94,393)
Change in contract assets	3,621
Change in Net Contract Liabilities	$ 4,229
Percentage of change in accounts receivable, less allowance	(7.70%)
Percentage of change in contract assets	16.70%
Percentage of change in Net Contract Liabilities	(99.10%)
Short-term
Change in Contract with Customer, Asset and Liability [Abstract]
Change in contract liabilities	$ 608
Percentage of change in contract liabilities	(2.30%)

Segment Information - Additiona

Segment Information - Additional Information (Detail) - Segment	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Segment Reporting Information [Line Items]
Number of reportable segments	4	3
Number of operating segments	4
Consumer Segment | Sales | Customer Concentration Risk | Home Depot
Segment Reporting Information [Line Items]
Percentage of net sales	26.00%	29.00%	28.00%
Maximum | Sales | Customer Concentration Risk | Home Depot
Segment Reporting Information [Line Items]
Percentage of net sales	10.00%	10.00%	10.00%

Results of Reportable Segments

Results of Reportable Segments (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		May 31, 2020	Feb. 29, 2020	Nov. 30, 2019	Aug. 31, 2019	May 31, 2019	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2018	May 31, 2020		May 31, 2019		May 31, 2018
Segment Reporting Information [Line Items]
Net Sales		$ 1,458,962	$ 1,173,976	$ 1,401,292	$ 1,472,764	$ 1,601,401	$ 1,140,630	$ 1,362,531	$ 1,459,989	$ 5,506,994	[1]	$ 5,564,551	[1]	$ 5,321,643	[1]
Income (Loss) Before Income Taxes										407,764		339,845		417,048
Identifiable Assets		5,630,954				5,441,355				5,630,954		5,441,355		5,271,822
Capital Expenditures										157,279		136,757		114,619
Depreciation and Amortization										156,842		141,742		128,499
Operating Segments | CPG Segment
Segment Reporting Information [Line Items]
Net Sales	[1]									1,880,105		1,899,744		1,837,280
Income (Loss) Before Income Taxes										209,663		178,823		174,032
Identifiable Assets		1,622,632				1,573,329				1,622,632		1,573,329		1,531,485
Capital Expenditures										63,393		40,119		39,368
Depreciation and Amortization										46,491		44,150		41,538
Operating Segments | PCG Segment
Segment Reporting Information [Line Items]
Net Sales	[1]									1,080,701		1,136,119		1,088,606
Income (Loss) Before Income Taxes										102,345		77,388		112,614
Identifiable Assets		925,569				951,644				925,569		951,644		974,104
Capital Expenditures										23,868		22,158		22,102
Depreciation and Amortization										23,850		27,116		21,394
Operating Segments | Consumer Segment
Segment Reporting Information [Line Items]
Net Sales	[1]									1,945,220		1,858,453		1,722,220
Income (Loss) Before Income Taxes										198,024		217,448		171,872
Identifiable Assets		2,067,017				1,953,279				2,067,017		1,953,279		1,833,372
Capital Expenditures										47,331		45,039		38,341
Depreciation and Amortization										56,570		40,231		36,744
Operating Segments | SPG Segments
Segment Reporting Information [Line Items]
Net Sales	[1]									600,968		670,235		673,537
Income (Loss) Before Income Taxes										57,933		86,018		107,455
Identifiable Assets		728,449				689,133				728,449		689,133		684,254
Capital Expenditures										21,610		28,006		14,213
Depreciation and Amortization										24,111		25,199		23,085
Corporate/Other
Segment Reporting Information [Line Items]
Income (Loss) Before Income Taxes										(160,201)		(219,832)		(148,925)
Identifiable Assets		$ 287,287				$ 273,970				287,287		273,970		248,607
Capital Expenditures										1,077		1,435		595
Depreciation and Amortization										$ 5,820		$ 5,046		$ 5,738
[1]	It is not practicable to obtain the information needed to disclose revenues attributable to each of our product lines.

Net Sales and Long Lived Assets

Net Sales and Long Lived Assets by Regions (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		May 31, 2020	Feb. 29, 2020	Nov. 30, 2019	Aug. 31, 2019	May 31, 2019	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2018	May 31, 2020		May 31, 2019		May 31, 2018
Segment Reporting Information [Line Items]
Net Sales		$ 1,458,962	$ 1,173,976	$ 1,401,292	$ 1,472,764	$ 1,601,401	$ 1,140,630	$ 1,362,531	$ 1,459,989	$ 5,506,994	[1]	$ 5,564,551	[1]	$ 5,321,643	[1]
Long-Lived Assets	[2]	3,176,631				2,888,355				3,176,631		2,888,355		2,778,994
Domestic
Segment Reporting Information [Line Items]
Net Sales	[1]									3,788,223		3,676,504		3,432,034
Long-Lived Assets	[2]	2,146,333				1,859,628				2,146,333		1,859,628		1,807,046
Foreign
Segment Reporting Information [Line Items]
Net Sales	[1]									1,718,771		1,888,047		1,889,609
Long-Lived Assets	[2]	1,030,298				1,028,727				1,030,298		1,028,727		971,948
Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	[1]									356,453		390,199		365,349
Long-Lived Assets	[2]	224,177				242,582				224,177		242,582		139,259
Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	[1]									936,098		1,029,024		1,040,418
Long-Lived Assets	[2]	358,511				343,501				358,511		343,501		361,317
Foreign | United Kingdom
Segment Reporting Information [Line Items]
Long-Lived Assets	[2]	252,185				217,414				252,185		217,414		230,071
Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	[1]									209,807		219,044		227,207
Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	[1]									152,264		177,868		176,547
Foreign | Other Foreign
Segment Reporting Information [Line Items]
Net Sales	[1]									64,149		71,912		80,088
Long-Lived Assets	[2]	$ 195,425				$ 225,230				195,425		225,230		241,301
Operating Segments | CPG Segment
Segment Reporting Information [Line Items]
Net Sales	[1]									1,880,105		1,899,744		1,837,280
Operating Segments | CPG Segment | Domestic
Segment Reporting Information [Line Items]
Net Sales	[1]									1,068,552		1,003,227		938,062
Operating Segments | CPG Segment | Foreign
Segment Reporting Information [Line Items]
Net Sales	[1]									811,553		896,517		899,218
Operating Segments | CPG Segment | Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	[1]									159,986		181,089		166,600
Operating Segments | CPG Segment | Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	[1]									418,249		477,761		485,583
Operating Segments | CPG Segment | Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	[1]									151,099		155,039		160,010
Operating Segments | CPG Segment | Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	[1]									73,629		81,895		82,856
Operating Segments | CPG Segment | Foreign | Other Foreign
Segment Reporting Information [Line Items]
Net Sales	[1]									8,590		733		4,169
Operating Segments | PCG Segment
Segment Reporting Information [Line Items]
Net Sales	[1]									1,080,701		1,136,119		1,088,606
Operating Segments | PCG Segment | Domestic
Segment Reporting Information [Line Items]
Net Sales	[1]									656,162		667,402		628,177
Operating Segments | PCG Segment | Foreign
Segment Reporting Information [Line Items]
Net Sales	[1]									424,539		468,717		460,429
Operating Segments | PCG Segment | Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	[1]									71,689		82,897		83,607
Operating Segments | PCG Segment | Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	[1]									247,904		251,600		241,639
Operating Segments | PCG Segment | Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	[1]									32,471		34,588		37,849
Operating Segments | PCG Segment | Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	[1]									24,622		36,498		29,856
Operating Segments | PCG Segment | Foreign | Other Foreign
Segment Reporting Information [Line Items]
Net Sales	[1]									47,853		63,134		67,478
Operating Segments | Consumer Segment
Segment Reporting Information [Line Items]
Net Sales	[1]									1,945,220		1,858,453		1,722,220
Operating Segments | Consumer Segment | Domestic
Segment Reporting Information [Line Items]
Net Sales	[1]									1,573,966		1,462,446		1,325,509
Operating Segments | Consumer Segment | Foreign
Segment Reporting Information [Line Items]
Net Sales	[1]									371,254		396,007		396,711
Operating Segments | Consumer Segment | Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	[1]									116,424		117,305		106,460
Operating Segments | Consumer Segment | Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	[1]									195,783		213,466		221,484
Operating Segments | Consumer Segment | Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	[1]									24,909		28,020		27,834
Operating Segments | Consumer Segment | Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	[1]									26,432		29,171		32,492
Operating Segments | Consumer Segment | Foreign | Other Foreign
Segment Reporting Information [Line Items]
Net Sales	[1]									7,706		8,045		8,441
Operating Segments | SPG Segments
Segment Reporting Information [Line Items]
Net Sales	[1]									600,968		670,235		673,537
Operating Segments | SPG Segments | Domestic
Segment Reporting Information [Line Items]
Net Sales	[1]									489,543		543,429		540,286
Operating Segments | SPG Segments | Foreign
Segment Reporting Information [Line Items]
Net Sales	[1]									111,425		126,806		133,251
Operating Segments | SPG Segments | Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	[1]									8,354		8,908		8,682
Operating Segments | SPG Segments | Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	[1]									74,162		86,197		91,712
Operating Segments | SPG Segments | Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	[1]									1,328		1,397		1,514
Operating Segments | SPG Segments | Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	[1]									$ 27,581		$ 30,304		$ 31,343
[1]	It is not practicable to obtain the information needed to disclose revenues attributable to each of our product lines.
[2]	Long-lived assets include all non-current assets, excluding non-current deferred income taxes.

Quarterly Result of Operations

Quarterly Result of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended																12 Months Ended
	May 31, 2020		Feb. 29, 2020		Nov. 30, 2019		Aug. 31, 2019		May 31, 2019		Feb. 28, 2019		Nov. 30, 2018		Aug. 31, 2018		May 31, 2020		May 31, 2019		May 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Net Sales	$ 1,458,962		$ 1,173,976		$ 1,401,292		$ 1,472,764		$ 1,601,401		$ 1,140,630		$ 1,362,531		$ 1,459,989		$ 5,506,994	[1]	$ 5,564,551	[1]	$ 5,321,643	[1]
Gross Profit	553,956		434,747		529,398		574,754		635,814		409,422		493,731		549,353		2,092,855		2,088,320		2,016,548
Net Income Attributable to RPM International Inc. Stockholders	$ 109,314	[2]	$ 11,853	[2]	$ 77,030	[2]	$ 106,188	[2]	$ 133,380	[3]	$ 14,190	[3]	$ 49,224	[3]	$ 69,764	[3]	$ 304,385		$ 266,558		$ 337,770
Basic Earnings Per Share	$ 0.85		$ 0.09		$ 0.60		$ 0.82		$ 1.03		$ 0.11		$ 0.37		$ 0.52		$ 2.35		$ 2.03		$ 2.55
Diluted Earnings Per Share	0.84		0.09		0.59		0.82		1.02		0.11		0.37		0.52		$ 2.34		$ 2.01		$ 2.50
Dividends Per Share	$ 0.360		$ 0.360		$ 0.360		$ 0.350		$ 0.350		$ 0.350		$ 0.350		$ 0.320
[1]	It is not practicable to obtain the information needed to disclose revenues attributable to each of our product lines.
[2]	Reflects inventory-related charges of $28.8 million in our Consumer reportable segment resulting from SKU rationalization, excess and obsolescence, and exiting unprofitable product lines and regions and $3.2 million in our PCG segment resulting from the exit of unprofitable product lines and regions.  Also reflects restructuring charges totaling $33.1 million that were incurred throughout fiscal 2020, as further described in Note B, “Restructuring”.
[3]	Reflects inventory-related charges of $10.5 million in our Consumer reportable segment resulting from more proactive management of inventory and $9.0 million and $1.0 million in inventory reductions related to restructuring activities in our PCG and CPG reportable segments, respectively.  Also reflects restructuring charges totaling $42.3 million that were incurred throughout fiscal 2019, as further described in Note B, “Restructuring”.

Quarterly Result of Operation_2

Quarterly Result of Operations (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Quarterly Financial Information [Line Items]
Inventory markdowns	$ 39,600	$ 29,400	$ 43,700
Current Year Charges	33,108	42,310	17,514
Consumer Segment
Quarterly Financial Information [Line Items]
Inventory markdowns	28,800	10,500	36,500
PCG Segment
Quarterly Financial Information [Line Items]
Inventory markdowns	$ 3,200	9,000
CPG Segment
Quarterly Financial Information [Line Items]
Inventory markdowns		$ 1,000	$ 1,200

Valuation and Qualifying Acco_2

Valuation and Qualifying Accounts and Reserves (Schedule II) (Detail) - USD ($) $ in Thousands		12 Months Ended
		May 31, 2020	May 31, 2019	May 31, 2018
Allowance for Doubtful Accounts, Current
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		$ 54,748	$ 46,344	$ 44,138
Additions Charged to Selling, General and Administrative		16,683	18,646	4,487
Acquisitions (Disposals) of Businesses and Reclassifications		(79)	(131)
(Deductions) Additions	[1]	(15,505)	(10,111)	(2,281)
Balance at End of Period		55,847	54,748	46,344
Accrued Product Liability Reserves, Current
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		11,739	12,900	14,932
Additions Charged to Selling, General and Administrative		5,356	12,696	6,169
(Deductions) Additions	[2]	(6,637)	(13,857)	(8,201)
Balance at End of Period		10,458	11,739	12,900
Accrued Environmental Reserves, Current
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		1,147	1,144	1,102
Additions Charged to Selling, General and Administrative		1,168	875	413
(Deductions) Additions	[2]	(345)	(872)	(371)
Balance at End of Period		1,970	1,147	1,144
Accrued Product Liability Reserves, Noncurrent
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		29,942	29,902	28,222
Additions Charged to Selling, General and Administrative		15,042	8,301	16,581
(Deductions) Additions	[2]	(17,968)	(8,261)	(14,901)
Balance at End of Period		27,016	29,942	29,902
Accrued Environmental Reserves, Noncurrent
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		4,211	3,571	1,747
Additions Charged to Selling, General and Administrative		371	895	5,350	[3]
(Deductions) Additions		(457)	(255)	(3,526)
Balance at End of Period		$ 4,125	$ 4,211	$ 3,571
[1]	Uncollectible accounts written off, net of recoveries
[2]	Primarily claims paid during the year, net of insurance contributions
[3]	Approximately $1.7 million of the additions are reflected in the line item entitled, “Restructuring Expense,” in our Consolidated Statements of Income.

Valuation and Qualifying Acco_3

Valuation and Qualifying Accounts and Reserves (Schedule II) (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2018
Valuation and Qualifying Accounts Disclosure [Line Items]
Restructuring Expense	$ 33,108	$ 42,310	$ 17,514
Environmental Reserves, Noncurrent
Valuation and Qualifying Accounts Disclosure [Line Items]
Restructuring Expense			$ 1,700