Goodwill and Other Intangible Assets - Schedule of Goodwill Resulting from Leucadia Transaction Attributable to Reportable Segments (Detail) $ in Thousands	3 Months Ended
	Feb. 29, 2016 USD ($)
Goodwill [Roll Forward]
Total goodwill	$ 1,656,588
Translation adjustments	(7,041)
Total goodwill	1,649,547
Capital Markets [Member]
Goodwill [Roll Forward]
Total goodwill	1,653,588
Total goodwill	1,646,547
Asset Management Income [Member]
Goodwill [Roll Forward]
Total goodwill	3,000
Total goodwill	$ 3,000