Income Taxes (Summary Of Changes In Gross Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2021
Gross Unrecognized Tax Benefits [Roll Forward]
Gross unrecognized tax benefits, beginning of year	$ 0	$ 12,285	$ 12,285
Decreases due to settlements with tax authorities	0	(12,285)	0
Gross unrecognized tax benefits, end of year	$ 0	$ 0	$ 12,285