Results of Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2020	Nov. 30, 2019	May 31, 2020
Segment Reporting Information [Line Items]
Net Sales	$ 1,485,915	$ 1,401,292	$ 3,092,586	$ 2,874,056
Income (Loss) Before Income Taxes	166,956	101,753	408,325	244,602
Identifiable Assets	5,790,208		5,790,208		$ 5,630,954
Domestic
Segment Reporting Information [Line Items]
Net Sales	991,019	927,715	2,118,124	1,930,240
Foreign
Segment Reporting Information [Line Items]
Net Sales	494,896	473,577	974,462	943,816
Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	98,551	95,138	222,134	201,287
Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	278,575	257,234	535,534	507,843
Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	56,460	59,602	104,764	117,637
Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	42,909	42,772	78,254	81,631
Foreign | Other Foreign
Segment Reporting Information [Line Items]
Net Sales	18,401	18,831	33,776	35,418
Operating Segments | CPG Segment
Segment Reporting Information [Line Items]
Net Sales	503,520	499,510	1,051,210	1,035,615
Income (Loss) Before Income Taxes	71,832	57,123	170,182	139,803
Identifiable Assets	1,631,168		1,631,168		1,622,632
Operating Segments | CPG Segment | Domestic
Segment Reporting Information [Line Items]
Net Sales	261,092	270,908	589,053	578,567
Operating Segments | CPG Segment | Foreign
Segment Reporting Information [Line Items]
Net Sales	242,428	228,602	462,157	457,048
Operating Segments | CPG Segment | Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	48,686	46,199	104,328	96,642
Operating Segments | CPG Segment | Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	129,586	117,548	238,305	231,850
Operating Segments | CPG Segment | Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	40,137	43,084	74,990	85,931
Operating Segments | CPG Segment | Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	20,948	19,468	38,588	39,864
Operating Segments | CPG Segment | Foreign | Other Foreign
Segment Reporting Information [Line Items]
Net Sales	3,071	2,303	5,946	2,761
Operating Segments | PCG Segment
Segment Reporting Information [Line Items]
Net Sales	258,833	292,712	518,622	589,953
Income (Loss) Before Income Taxes	24,047	33,320	52,561	61,377
Identifiable Assets	951,588		951,588		925,569
Operating Segments | PCG Segment | Domestic
Segment Reporting Information [Line Items]
Net Sales	148,480	173,747	304,542	355,653
Operating Segments | PCG Segment | Foreign
Segment Reporting Information [Line Items]
Net Sales	110,353	118,965	214,080	234,300
Operating Segments | PCG Segment | Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	18,196	19,309	35,309	40,282
Operating Segments | PCG Segment | Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	63,891	69,999	127,526	134,458
Operating Segments | PCG Segment | Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	7,139	8,842	12,733	17,283
Operating Segments | PCG Segment | Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	5,797	6,670	10,682	14,094
Operating Segments | PCG Segment | Foreign | Other Foreign
Segment Reporting Information [Line Items]
Net Sales	15,330	14,145	27,830	28,183
Operating Segments | Consumer Segment
Segment Reporting Information [Line Items]
Net Sales	547,508	450,900	1,188,676	930,230
Income (Loss) Before Income Taxes	88,368	34,456	221,089	93,614
Identifiable Assets	2,133,079		2,133,079		2,067,017
Operating Segments | Consumer Segment | Domestic
Segment Reporting Information [Line Items]
Net Sales	441,235	358,500	950,819	739,729
Operating Segments | Consumer Segment | Foreign
Segment Reporting Information [Line Items]
Net Sales	106,273	92,400	237,857	190,501
Operating Segments | Consumer Segment | Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	29,460	27,075	78,368	59,580
Operating Segments | Consumer Segment | Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	63,454	48,741	131,064	99,750
Operating Segments | Consumer Segment | Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	8,769	7,327	16,161	13,642
Operating Segments | Consumer Segment | Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	4,590	6,874	12,264	13,055
Operating Segments | Consumer Segment | Foreign | Other Foreign
Segment Reporting Information [Line Items]
Net Sales		2,383		4,474
Operating Segments | SPG Segment
Segment Reporting Information [Line Items]
Net Sales	176,054	158,170	334,078	318,258
Income (Loss) Before Income Taxes	28,406	18,762	48,855	42,089
Identifiable Assets	754,153		754,153		728,449
Operating Segments | SPG Segment | Domestic
Segment Reporting Information [Line Items]
Net Sales	140,212	124,560	273,710	256,291
Operating Segments | SPG Segment | Foreign
Segment Reporting Information [Line Items]
Net Sales	35,842	33,610	60,368	61,967
Operating Segments | SPG Segment | Foreign | Canada
Segment Reporting Information [Line Items]
Net Sales	2,209	2,555	4,129	4,783
Operating Segments | SPG Segment | Foreign | Europe
Segment Reporting Information [Line Items]
Net Sales	21,644	20,946	38,639	41,785
Operating Segments | SPG Segment | Foreign | Latin America
Segment Reporting Information [Line Items]
Net Sales	415	349	880	781
Operating Segments | SPG Segment | Foreign | Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	11,574	9,760	16,720	14,618
Corporate/Other
Segment Reporting Information [Line Items]
Income (Loss) Before Income Taxes	(45,697)	$ (41,908)	(84,362)	$ (92,281)
Identifiable Assets	$ 320,220		$ 320,220		$ 287,287