Results of Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018	May 31, 2019
Segment Reporting Information [Line Items]
Net Sales	$ 1,401,292	$ 1,362,531	$ 2,874,056	$ 2,822,520
Income (Loss) Before Income Taxes	101,753	66,593	244,602	158,531
Identifiable Assets	5,580,998		5,580,998		$ 5,441,355
Domestic
Segment Reporting Information [Line Items]
Net Sales	927,715	871,386	1,930,240	1,852,059
Foreign
Segment Reporting Information [Line Items]
Net Sales	473,577	491,145	943,816	970,461
Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	95,138	102,242	201,287	199,019
Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	257,234	269,842	507,843	536,418
Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	59,602	52,503	117,637	106,557
Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	42,772	46,719	81,631	89,615
Foreign | Other Foreign
Segment Reporting Information [Line Items]
Net Sales	18,831	19,839	35,418	38,852
Operating Segments | CPG Segment
Segment Reporting Information [Line Items]
Net Sales	499,510	467,298	1,035,615	984,790
Income (Loss) Before Income Taxes	57,123	35,357	139,803	100,401
Identifiable Assets	1,581,862		1,581,862		1,573,329
Operating Segments | CPG Segment | Domestic
Segment Reporting Information [Line Items]
Net Sales	270,908	229,385	578,567	519,184
Operating Segments | CPG Segment | Foreign
Segment Reporting Information [Line Items]
Net Sales	228,602	237,913	457,048	465,606
Operating Segments | CPG Segment | Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	46,199	53,734	96,642	97,072
Operating Segments | CPG Segment | Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	117,548	128,628	231,850	253,915
Operating Segments | CPG Segment | Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	43,084	36,308	85,931	74,293
Operating Segments | CPG Segment | Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	19,468	19,397	39,864	39,687
Operating Segments | CPG Segment | Foreign | Other Foreign
Segment Reporting Information [Line Items]
Net Sales	2,303	(154)	2,761	639
Operating Segments | PCG Segment
Segment Reporting Information [Line Items]
Net Sales	292,712	291,960	589,953	588,379
Income (Loss) Before Income Taxes	33,320	22,299	61,377	30,624
Identifiable Assets	975,423		975,423		951,644
Operating Segments | PCG Segment | Domestic
Segment Reporting Information [Line Items]
Net Sales	173,747	169,518	355,653	346,975
Operating Segments | PCG Segment | Foreign
Segment Reporting Information [Line Items]
Net Sales	118,965	122,442	234,300	241,404
Operating Segments | PCG Segment | Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	19,309	22,671	40,282	44,859
Operating Segments | PCG Segment | Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	69,999	64,156	134,458	124,769
Operating Segments | PCG Segment | Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	8,842	8,550	17,283	18,190
Operating Segments | PCG Segment | Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	6,670	9,312	14,094	19,525
Operating Segments | PCG Segment | Foreign | Other Foreign
Segment Reporting Information [Line Items]
Net Sales	14,145	17,753	28,183	34,061
Operating Segments | Consumer Segment
Segment Reporting Information [Line Items]
Net Sales	450,900	425,255	930,230	902,618
Income (Loss) Before Income Taxes	34,456	41,836	93,614	92,805
Identifiable Assets	2,001,829		2,001,829		1,953,279
Operating Segments | Consumer Segment | Domestic
Segment Reporting Information [Line Items]
Net Sales	358,500	329,934	739,729	705,470
Operating Segments | Consumer Segment | Foreign
Segment Reporting Information [Line Items]
Net Sales	92,400	95,321	190,501	197,148
Operating Segments | Consumer Segment | Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	27,075	23,403	59,580	52,408
Operating Segments | Consumer Segment | Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	48,741	54,478	99,750	112,354
Operating Segments | Consumer Segment | Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	7,327	7,281	13,642	13,403
Operating Segments | Consumer Segment | Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	6,874	7,919	13,055	14,831
Operating Segments | Consumer Segment | Foreign | Other Foreign
Segment Reporting Information [Line Items]
Net Sales	2,383	2,240	4,474	4,152
Operating Segments | Specialty Segment
Segment Reporting Information [Line Items]
Net Sales	158,170	178,018	318,258	346,733
Income (Loss) Before Income Taxes	18,762	26,119	42,089	49,935
Identifiable Assets	716,471		716,471		689,133
Operating Segments | Specialty Segment | Domestic
Segment Reporting Information [Line Items]
Net Sales	124,560	142,549	256,291	280,430
Operating Segments | Specialty Segment | Foreign
Segment Reporting Information [Line Items]
Net Sales	33,610	35,469	61,967	66,303
Operating Segments | Specialty Segment | Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	2,555	2,434	4,783	4,680
Operating Segments | Specialty Segment | Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	20,946	22,580	41,785	45,380
Operating Segments | Specialty Segment | Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	349	364	781	671
Operating Segments | Specialty Segment | Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	9,760	10,091	14,618	15,572
Corporate/Other
Segment Reporting Information [Line Items]
Income (Loss) Before Income Taxes	(41,908)	$ (59,018)	(92,281)	$ (115,234)
Identifiable Assets	$ 305,413		$ 305,413		$ 273,970