Derivative Financial Instruments - Unrealized and Realized Gains (Losses) on Derivative Contracts (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in interest expense on fair value hedge	$ 2,057	$ 0	$ 2,853	$ 0
Unrealized and realized gains (losses)	(6,973)	(91,589)	(152,554)	(402,955)
Interest rate contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized and realized gains (losses)	(960)	(7,559)	9,037	(80,084)
Foreign exchange contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized and realized gains (losses)	1,099	4,525	3,107	6,114
Equity contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized and realized gains (losses)	417	(98,546)	(168,699)	(324,212)
Commodity contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized and realized gains (losses)	(6,395)	(315)	(6,906)	(2,190)
Credit contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized and realized gains (losses)	(1,134)	10,306	10,907	(2,583)
Interest rate swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in interest expense on fair value hedge	12,352	0	7,743	0
Long-term debt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in interest expense on fair value hedge	$ (10,295)	$ 0	$ (4,890)	$ 0

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- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959

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- Definition

Total amount of gain (loss) derived from fair value hedges recognized in earnings in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

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