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Pension and Employee Benefits Plans - Defined Contribution Plan - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018	Nov. 30, 2018
Compensation And Retirement Disclosure [Abstract]
Employer contribution to defined contribution plan	$ 11,052	$ 10,574	$ 34,596	$ 29,939
Deferred compensation liability	6,240		6,240		$ 6,146
Defined benefit and postemployment plans,net periodic pension costs	6,204	1,473	11,678	4,268
Defined benefit and postemployment plans, contributions	2,225	$ 766	5,437	$ 2,881
Unfunded liabilities related to defined pension and postemployment plans	$ (85,722)		$ (85,722)		$ (89,001)

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount of discretionary contributions made by an employer to a defined contribution plan.

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