Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Operating activities:
Net income	$ 134,431	$ 90,923
Reconciliation of net income to net cash provided by operating activities:
Depreciation and amortization	149,347	107,787
Stock-based compensation expense	127,723	114,794
Impairment of assets	0	1,629
Excess tax benefit from stock-based compensation	(11,609)	(12,405)
Net periodic pension and postretirement expense (income)	4,342	6,724
Pension and postretirement contributions	(2,080)	(12,601)
Deferred income taxes	8,337	(37,756)
Change in assets and liabilities:
Accounts receivable, net	93,234	43,662
Other current assets	(11,490)	3,319
Accounts payable	(9,682)	(14,442)
Accrued expenses	(2,878)	(371)
Income tax payable	16,281	32,700
Deferred revenue	43,465	21,567
Other liabilities	3,029	(1,161)
Net cash provided by operating activities	542,450	344,369
Investing activities:
Capital expenditures on property and equipment	(83,314)	(65,411)
Acquisitions of businesses, net of cash acquired	(133,938)	(1,481,288)
Intangible assets acquired	(714)	0
Change in other assets	3,846	(5,590)
Settlements of forward contracts	1,345	2,853
Net cash used in investing activities	(212,775)	(1,549,436)
Financing activities:
Proceeds from borrowings	165,000	1,375,000
Repayment of borrowings	(439,317)	(128,648)
Payment of debt issuance costs	0	17,360
Excess tax benefit from stock-based compensation	11,609	12,405
Proceeds from the exercise of employee stock options	0	549
Repurchases of common stock	(51,282)	(87,512)
Net cash provided by (used in) financing activities	(313,990)	1,154,434
Foreign exchange impact on cash balance	(12,239)	(23,380)
Net increase (decrease) in cash and cash equivalents	3,446	(74,013)
Cash and cash equivalents at the beginning of the period	258,367	345,008
Cash and cash equivalents at the end of the period	$ 261,813	$ 270,995