Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Segment Reporting Information [Line Items]
Revenue	$ 556,011	$ 480,288	$ 1,648,477	$ 1,280,956
Operating income	73,778	39,426	216,205	137,410
Depreciation and amortization	50,568	42,431	149,347	107,787
Disclosure of Major Customers	0	0	0	0
Americas Segment [Member]
Segment Reporting Information [Line Items]
Revenue	363,449	307,281	1,090,656	794,072
Operating income	90,178	71,366	261,375	213,014
Depreciation and amortization	41,846	34,368	124,414	83,833
EMEA Segment [Member]
Segment Reporting Information [Line Items]
Revenue	138,120	122,247	403,828	344,662
Operating income	35,166	19,788	94,226	56,259
Depreciation and amortization	5,057	5,666	16,162	17,057
APAC Segment [Member]
Segment Reporting Information [Line Items]
Revenue	54,442	50,760	153,993	142,222
Operating income	10,587	8,967	33,587	28,964
Depreciation and amortization	2,317	558	3,405	1,495
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Revenue	0	0	0	0
Operating income	(62,153)	(60,695)	(172,983)	(160,827)
Depreciation and amortization	$ 1,348	$ 1,839	$ 5,366	$ 5,402