Employee Benefit And Retirement Plans - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2020	Aug. 31, 2019	Nov. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Other income, net	$ 3.9	$ 6.9	$ 12.5	$ 19.3
Payment for Pension Benefits			9.3	8.9	$ 11.4
Pension and other postretirement costs	231.7	119.7	231.7	119.7	$ 234.0
Accounting Standards Update 2017-07 [Member]
Defined Benefit Plan Disclosure [Line Items]
Other income, net	$ (1.9)	$ (4.3)	$ (7.1)	$ (13.1)

Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount of income (expense) related to nonoperating activities, classified as other.

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Amount of cash outflow for pension benefit. Includes, but is not limited to, employer contribution to fund plan asset and payment to retiree. Excludes other postretirement benefit.

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