Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2012	Dec. 02, 2011	Dec. 03, 2010
Cash flows from operating activities:
Net income	$ 832,775	$ 832,847	$ 774,680
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	299,766	270,205	292,738
Stock-based compensation	298,502	286,103	231,086
Deferred income taxes	89,212	51,415	(172,329)
Unrealized (gains) losses on investments	(8,535)	(4,349)	11,517
Retirements and disposals of property and equipment	1,113	14,772	674
Other non-cash items	(13,658)	24,560	13,695
Excess tax benefits from stock-based compensation	(10,003)	(9,949)	(16,430)
Changes in operating assets and liabilities, net of acquired assets and assumed liabilities:
Trade receivables, net	45,166	(81,065)	(134,276)
Prepaid expenses and other current assets	4,552	(5,100)	(39,963)
Trade payables	(62,874)	32,203	(10,092)
Accrued expenses	(7,770)	(24,708)	127,814
Accrued restructuring	(66,047)	71,932	(26,811)
Income taxes payable	10,041	(16,661)	(48,656)
Deferred revenue	87,340	101,109	109,348
Net cash provided by operating activities	1,499,580	1,543,314	1,112,995
Cash flows from investing activities:
Purchases of short-term investments	(1,776,485)	(1,861,075)	(2,600,787)
Maturities of short-term investments	439,878	486,050	643,614
Proceeds from sales of short-term investments	1,126,886	1,148,148	1,134,365
Business acquisitions, net of cash acquired	(353,195)	(259,046)	(193,281)
Purchases of property and equipment	(271,076)	(210,294)	(169,642)
Proceeds from sale of property and equipment	0	0	32,151
Purchases of long-term investments, intangibles and other assets	(29,701)	(65,600)	(28,216)
Proceeds from sale of long-term investments	29,031	4,415	22,502
Net cash used for investing activities	(834,662)	(757,402)	(1,159,294)
Cash flows from financing activities:
Purchases of treasury stock	(405,000)	(695,015)	(850,020)
Net proceeds from issuance of treasury stock	169,274	144,754	139,270
Excess tax benefits from stock-based compensation	10,003	9,949	16,430
Proceeds from Long-term Debt and Long-term Capital Lease obligations	3,152	0	1,493,439
Repayment of debt and capital lease obligations	(9,855)	(10,046)	(1,003,719)
Debt issuance costs	(2,297)	0	(10,662)
Net cash used for financing activities	(234,723)	(550,358)	(215,262)
Effect of foreign currency exchange rates on cash and cash equivalents	5,357	4,055	11,965
Net increase (decrease) in cash and cash equivalents	435,552	239,609	(249,596)
Cash and cash equivalents at beginning of year	989,500	749,891	999,487
Cash and cash equivalents at end of year	1,425,052	989,500	749,891
Supplemental disclosures:
Cash paid for income taxes, net of refunds	201,125	158,373	389,114
Cash paid for interest	66,265	63,967	34,632
Non-cash investing activities:
Issuance of common stock and stock awards assumed in business acquisitions	4,265	0	3,264
Property and equipment acquired under capital leases	$ 0	$ 0	$ 32,151