Business Segments (Detail) - USD ($)	3 Months Ended		6 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2021	May 31, 2020
Segment Reporting Information [Line Items]
Revenues	$ 1,556,700,000	$ 1,401,100,000	$ 3,038,200,000	$ 2,613,100,000
Operating income	237,400,000	257,400,000	473,700,000	451,600,000
Less: Special charges	13,700,000	2,900,000	14,800,000	3,900,000
Operating income excluding special charges	258,000,000.0	260,300,000	520,500,000	455,500,000
Income from unconsolidated operations (including, for 2021, after-tax gain of $13.4 on sale of unconsolidated operation)	23,400,000	10,200,000	36,700,000	20,600,000
Transaction and integration expenses	6,900,000	0	25,700,000	0
Cost of Sales
Segment Reporting Information [Line Items]
Transaction and integration expenses	0		6,300,000
Consumer
Segment Reporting Information [Line Items]
Revenues	945,200,000	962,600,000	1,892,000,000.0	1,662,100,000
Operating income	164,900,000	229,100,000	345,800,000	348,100,000
Less: Special charges	8,800,000	2,500,000	9,600,000	3,100,000
Operating income excluding special charges	176,800,000	231,600,000	366,700,000	351,200,000
Income from unconsolidated operations (including, for 2021, after-tax gain of $13.4 on sale of unconsolidated operation)	22,200,000	8,400,000	33,000,000.0	16,200,000
Transaction and integration expenses	3,100,000		7,300,000
Consumer | Cost of Sales
Segment Reporting Information [Line Items]
Transaction and integration expenses			4,000,000.0
Flavor Solutions
Segment Reporting Information [Line Items]
Revenues	611,500,000	438,500,000	1,146,200,000	951,000,000.0
Operating income	72,500,000	28,300,000	127,900,000	103,500,000
Less: Special charges	4,900,000	400,000	5,200,000	800,000
Operating income excluding special charges	81,200,000	28,700,000	153,800,000	104,300,000
Income from unconsolidated operations (including, for 2021, after-tax gain of $13.4 on sale of unconsolidated operation)	1,200,000	1,800,000	3,700,000	4,400,000
Transaction and integration expenses	3,800,000		18,400,000
Flavor Solutions | Cost of Sales
Segment Reporting Information [Line Items]
Transaction and integration expenses			2,300,000
Americas [Member]
Segment Reporting Information [Line Items]
Revenues	1,081,400,000	1,025,400,000	2,046,200,000	1,845,000,000.0
Europe Middle East And Africa [Member]
Segment Reporting Information [Line Items]
Revenues	304,900,000	243,700,000	607,300,000	494,000,000.0
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	$ 170,400,000	$ 132,000,000.0	$ 384,700,000	$ 274,100,000