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Basis of Presentation and Significant Accounting Policies (Narratives) (Details) - USD ($) $ in Thousands		3 Months Ended
	Dec. 01, 2019	Feb. 29, 2020	Feb. 28, 2019	Nov. 30, 2019
Cash equivalents		$ 244,500		$ 302,500
Other comprehensive income (loss)		59,700	$ 30,000
Retained earnings		2,211,851		2,157,183
Financial Service [Member]
Contract assets		$ 21,100		$ 20,600
Accounting Standards Update 2016-02 [Member]
Cumulative Effect on Retained Earnings, Net of Tax	$ 1,500
Accounting Standards Update 2018-02 [Member]
Cumulative Effect on Retained Earnings, Net of Tax	$ 1,600