Intangible Assets (Tables)

9 Months Ended

Aug. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

The following table presents details of our intangible assets, other than goodwill, as of August 31, 2014 and November 30, 2013 (in thousands):

	As of August 31, 2014							As of November 30, 2013
	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
Intangible assets subject to amortization:
Information databases	$	625,172	$	(223,567	)	$	401,605	$	633,347	$	(194,904	)	$	438,443
Customer relationships	506,481		(108,570		)	397,911		470,632		(90,827		)	379,805
Developed computer software	151,517		(70,754		)	80,763		159,413		(64,514		)	94,899
Trademarks	167,211		(22,864		)	144,347		167,179		(13,300		)	153,879
Other	20,705		(8,562		)	12,143		28,121		(15,076		)	13,045
Total	$	1,471,086	$	(434,317	)	$	1,036,769	$	1,458,692	$	(378,621	)	$	1,080,071
Intangible assets not subject to amortization:
Trademarks	62,545		—			62,545		63,144		—			63,144
Perpetual licenses	1,242		—			1,242		1,249		—			1,249
Total intangible assets	$	1,534,873	$	(434,317	)	$	1,100,556	$	1,523,085	$	(378,621	)	$	1,144,464

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

The following table presents the estimated future amortization expense related to intangible assets held as of August 31, 2014 (in thousands):

Year	Amount
Remainder of 2014	$	33,905
2015	$	132,288
2016	$	123,140
2017	$	108,608
2018	$	96,408
Thereafter	$	542,420