Business Segments (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2020	Aug. 31, 2019
Segment Reporting Information [Line Items]
Revenues	$ 1,430.3	$ 1,329.2	$ 4,043.4	$ 3,862.6
Operating income	273.0	253.5	724.6	658.5
Less: Special charges	0.1	7.7	4.0	16.9
Operating income excluding special charges	273.1	261.2	728.6	675.4
Income from unconsolidated operations	9.6	9.6	30.2	29.2
Consumer
Segment Reporting Information [Line Items]
Revenues	910.9	794.2	2,573.0	2,303.2
Operating income	209.0	171.9	557.1	438.6
Less: Special charges	0.0	4.6	3.1	11.0
Operating income excluding special charges	209.0	176.5	560.2	449.6
Income from unconsolidated operations	8.5	7.3	24.7	22.7
Flavor Solutions
Segment Reporting Information [Line Items]
Revenues	519.4	535.0	1,470.4	1,559.4
Operating income	64.0	81.6	167.5	219.9
Less: Special charges	0.1	3.1	0.9	5.9
Operating income excluding special charges	64.1	84.7	168.4	225.8
Income from unconsolidated operations	1.1	2.3	5.5	6.5
Americas [Member]
Segment Reporting Information [Line Items]
Revenues	1,010.5	931.3	2,855.5	2,634.4
Europe Middle East And Africa [Member]
Segment Reporting Information [Line Items]
Revenues	262.7	234.5	756.7	726.7
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	$ 157.1	$ 163.4	$ 431.2	$ 501.5