Supplemental Guarantor Information Condensed Consolidating Statement of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 84,845	$ 40,073	$ 103,788	$ 41,710
Eliminating Entries [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(190,456)	(77,393)	(245,178)	(99,101)
IHS Inc. [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	84,845	40,073	103,788	41,710
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	95,381	43,826	122,225	51,321
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 95,075	$ 33,567	$ 122,953	$ 47,780