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Basis of Presentation and Significant Accounting Policies (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2021	Aug. 31, 2020	May 31, 2021	Nov. 30, 2020	May 31, 2020	Nov. 30, 2019
Equity	$ 2,841,733	$ 2,565,308	$ 2,841,733	$ 2,565,308	$ 2,886,865	$ 2,665,769	$ 2,490,354	$ 2,383,122
Cash equivalents	126,700		126,700			508,500
Other comprehensive income (loss)	150,100	78,400	390,500	190,200
Retained earnings	2,218,217		2,218,217			1,868,896
Financial Service [Member]
Contract assets	23,100		23,100			21,500
Retained Earnings [Member]
Equity	$ 2,218,217	$ 2,326,060	$ 2,218,217	$ 2,326,060	$ 2,081,288	1,868,896	$ 2,255,742	2,157,183
Cumulative Effect, Period of Adoption, Adjustment [Member]
Equity								1,510
Cumulative Effect, Period of Adoption, Adjustment [Member] \| Accounting Standards Update 2016-02 [Member]
Equity						(226)
Cumulative Effect, Period of Adoption, Adjustment [Member] \| Retained Earnings [Member]
Equity								$ 1,510
Cumulative Effect, Period of Adoption, Adjustment [Member] \| Retained Earnings [Member] \| Accounting Standards Update 2016-02 [Member]
Equity						$ (226)