Supplemental Guarantor Information Condensed Consolidating Balance Sheet (Details) - USD ($) $ in Thousands	May 31, 2016	May 30, 2016	Nov. 30, 2015	May 31, 2015	Feb. 28, 2015	Nov. 30, 2014
Current assets:
Cash and cash equivalents	$ 345,540		$ 291,580	$ 225,879		$ 153,156
Accounts receivable, net	378,026		355,913
Income tax receivable	7,737		4,585
Deferred subscription costs	62,481		52,752
Deferred income taxes	6,630		6,630
Intercompany receivables	0		0
Assets held for sale	0	$ 184,867	193,377
Other	69,575		57,135
Total current assets	863,359		955,342
Non-current assets:
Property and equipment, net	318,451		314,366
Intangible assets, net	1,320,421		1,014,691
Goodwill	4,081,083		3,287,459
Investment in subsidiaries	0		0
Intercompany notes receivable	0		0
Other	26,248		22,593
Total non-current assets	5,752,833		4,645,739
Total assets	6,616,192		5,601,081
Current liabilities:
Short-term debt	473,796		36,019
Accounts payable	45,399		59,180
Accrued compensation	69,512		105,477
Accrued royalties	34,810		33,306
Other accrued expenses	131,271		118,217
Income tax payable	45,498		23,339
Deferred revenue	649,794		552,498
Intercompany payables	0		0
Liabilities held for sale	0	$ 38,935	32,097
Total current liabilities	1,450,080		960,133
Long-term debt	2,487,524		2,095,183
Accrued pension and postretirement liability	25,902		26,745
Deferred income taxes	329,838		259,524
Intercompany notes payable	0		0
Other liabilities	66,906		58,619
Total stockholders’ equity	2,255,942		2,200,877
Total liabilities and stockholders’ equity	6,616,192		5,601,081
Eliminating Entries [Member]
Current assets:
Cash and cash equivalents	0		0		$ 0	0
Accounts receivable, net	0		0
Income tax receivable	0		(41,099)
Deferred subscription costs	(38,078)		(29,540)
Deferred income taxes	(45,459)		(58,471)
Intercompany receivables	(688,597)		(684,094)
Assets held for sale			0
Other	0		0
Total current assets	(726,675)		(754,733)
Non-current assets:
Property and equipment, net	0		0
Intangible assets, net	0		0
Goodwill	0		0
Investment in subsidiaries	(6,533,852)		(5,462,057)
Intercompany notes receivable	(1,406,465)		(724,778)
Other	0		0
Total non-current assets	(7,985,776)		(6,245,306)
Total assets	(8,712,451)		(7,000,039)
Current liabilities:
Short-term debt	0		0
Accounts payable	0		0
Accrued compensation	0		0
Accrued royalties	0		0
Other accrued expenses	0		0
Income tax payable	0		(41,100)
Deferred revenue	(38,078)		(29,540)
Intercompany payables	(688,597)		(695,359)
Liabilities held for sale			0
Total current liabilities	(726,675)		(765,999)
Long-term debt	0		0
Accrued pension and postretirement liability	0		0
Deferred income taxes	(45,459)		(47,205)
Intercompany notes payable	(1,406,465)		(724,778)
Other liabilities	0		0
Total stockholders’ equity	(6,533,852)		(5,462,057)
Total liabilities and stockholders’ equity	(8,712,451)		(7,000,039)
IHS Inc. [Member]
Current assets:
Cash and cash equivalents	150		0	0		0
Accounts receivable, net	0		0
Income tax receivable	0		42,663
Deferred subscription costs	0		0
Deferred income taxes	45,459		58,471
Intercompany receivables	464,204		465,915
Assets held for sale			0
Other	3,941		1,681
Total current assets	468,295		510,259
Non-current assets:
Property and equipment, net	0		0
Intangible assets, net	0		0
Goodwill	0		0
Investment in subsidiaries	3,071,702		2,416,961
Intercompany notes receivable	0		0
Other	14,598		10,181
Total non-current assets	3,131,759		2,485,613
Total assets	3,600,054		2,995,872
Current liabilities:
Short-term debt	41,250		0
Accounts payable	0		5
Accrued compensation	0		0
Accrued royalties	0		0
Other accrued expenses	4,139		3,453
Income tax payable	8,770		0
Deferred revenue	0		0
Intercompany payables	0		22,721
Liabilities held for sale			0
Total current liabilities	54,159		26,179
Long-term debt	1,270,875		750,000
Accrued pension and postretirement liability	18,787		18,260
Deferred income taxes	0		0
Intercompany notes payable	0		0
Other liabilities	291		556
Total stockholders’ equity	2,255,942		2,200,877
Total liabilities and stockholders’ equity	3,600,054		2,995,872
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	224,853		21,048	19,902		32,314
Accounts receivable, net	204,587		192,889
Income tax receivable	0		0
Deferred subscription costs	65,467		52,210
Deferred income taxes	0		0
Intercompany receivables	43,636		38,381
Assets held for sale			99,743
Other	43,049		38,220
Total current assets	581,592		442,491
Non-current assets:
Property and equipment, net	269,203		267,422
Intangible assets, net	736,387		768,029
Goodwill	2,440,621		2,274,422
Investment in subsidiaries	3,462,150		3,045,096
Intercompany notes receivable	123,846		0
Other	10,562		11,130
Total non-current assets	7,042,769		6,366,099
Total assets	7,624,361		6,808,590
Current liabilities:
Short-term debt	432,546		36,019
Accounts payable	23,267		39,689
Accrued compensation	52,245		69,889
Accrued royalties	27,995		25,985
Other accrued expenses	77,260		74,055
Income tax payable	0		64,077
Deferred revenue	361,921		321,766
Intercompany payables	620,461		549,783
Liabilities held for sale			12,402
Total current liabilities	1,595,695		1,193,665
Long-term debt	1,216,649		1,345,183
Accrued pension and postretirement liability	7,801		8,188
Deferred income taxes	264,187		259,764
Intercompany notes payable	1,282,619		724,778
Other liabilities	49,592		40,755
Total stockholders’ equity	3,207,818		3,236,257
Total liabilities and stockholders’ equity	7,624,361		6,808,590
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	120,537		270,532	$ 205,977		$ 120,842
Accounts receivable, net	173,439		163,024
Income tax receivable	7,737		3,021
Deferred subscription costs	35,092		30,082
Deferred income taxes	6,630		6,630
Intercompany receivables	180,757		179,798
Assets held for sale			93,634
Other	22,585		17,234
Total current assets	540,147		757,325
Non-current assets:
Property and equipment, net	49,248		46,944
Intangible assets, net	584,034		246,662
Goodwill	1,640,462		1,013,037
Investment in subsidiaries	0		0
Intercompany notes receivable	1,282,619		724,778
Other	1,088		1,282
Total non-current assets	3,564,081		2,039,333
Total assets	4,104,228		2,796,658
Current liabilities:
Short-term debt	0		0
Accounts payable	22,132		19,486
Accrued compensation	17,267		35,588
Accrued royalties	6,815		7,321
Other accrued expenses	49,872		40,709
Income tax payable	36,728		362
Deferred revenue	325,951		260,272
Intercompany payables	68,136		122,855
Liabilities held for sale			19,695
Total current liabilities	526,901		506,288
Long-term debt	0		0
Accrued pension and postretirement liability	(686)		297
Deferred income taxes	111,110		46,965
Intercompany notes payable	123,846		0
Other liabilities	17,023		17,308
Total stockholders’ equity	3,326,034		2,225,800
Total liabilities and stockholders’ equity	$ 4,104,228		$ 2,796,658