Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Nov. 27, 2015	Nov. 28, 2014	Nov. 29, 2013
Cash flows from operating activities:
Net income	$ 629,551	$ 268,395	$ 289,985
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	339,473	313,590	321,227
Stock-based compensation	335,859	333,701	328,987
Deferred income taxes	(69,657)	(26,089)	29,704
Gain on the sale of property	(21,415)	0	0
Write-down of assets held for sale, net of gains on sale	0	0	23,151
Unrealized (gains) losses on investments	(9,210)	(74)	5,665
Tax benefit from stock-based compensation	68,133	53,225	25,290
Excess tax benefits from stock-based compensation	(68,153)	(53,235)	(40,619)
Other non-cash items	1,216	1,889	5,654
Changes in operating assets and liabilities, net of acquired assets and assumed liabilities:
Trade receivables, net	(79,502)	7,928	33,649
Prepaid expenses and other current assets	(7,701)	(1,918)	(55,509)
Trade payables	22,870	6,211	7,132
Accrued expenses	(5,944)	37,544	41,828
Accrued restructuring	(16,620)	8,871	(6,949)
Income taxes payable	29,801	11,006	(58,875)
Deferred revenue	320,801	326,438	201,366
Net cash provided by operating activities	1,469,502	1,287,482	1,151,686
Cash flows from investing activities:
Purchases of short-term investments	(2,064,833)	(2,014,186)	(2,058,058)
Maturities of short-term investments	371,790	272,076	360,485
Proceeds from sales of short-term investments	1,176,476	1,443,577	1,449,961
Business acquisitions, net of cash acquired	(826,004)	(29,802)	(704,589)
Purchases of property and equipment	(184,936)	(148,332)	(188,358)
Proceeds from sale of property and equipment	57,779	0	24,260
Purchases of long-term investments, intangibles and other assets	(22,779)	(17,572)	(67,737)
Proceeds from sale of long-term investments	4,149	3,532	6,233
Net cash used for investing activities	(1,488,358)	(490,707)	(1,177,803)
Cash flows from financing activities:
Purchases of treasury stock	(625,000)	(600,000)	(1,100,000)
Proceeds from issuance of treasury stock	164,270	227,841	598,194
Cost of Issuance of treasury stock	(186,373)	(173,675)	(97,418)
Excess tax benefits from stock-based compensation	68,153	53,235	40,619
Proceeds from long-term debt and capital lease obligations	989,280	0	25,703
Repayment of debt and capital lease obligations	(602,189)	(14,684)	(25,879)
Debt issuance costs	(8,828)	0	(357)
Net cash used for financing activities	(200,687)	(507,283)	(559,138)
Effect of foreign currency exchange rates on cash and cash equivalents	(21,297)	(6,648)	(5,241)
Net increase (decrease) in cash and cash equivalents	(240,840)	282,844	(590,496)
Cash and cash equivalents at beginning of year	1,117,400	834,556	1,425,052
Cash and cash equivalents at end of year	876,560	1,117,400	834,556
Supplemental disclosures:
Cash paid for income taxes, net of refunds	203,010	20,140	129,701
Cash paid for interest	56,014	68,886	64,843
Non-cash investing activities:
Investment in lease receivable applied to building purchase	0	126,800	0
Issuance of common stock and stock awards assumed in business acquisitions	$ 677	$ 21	$ 1,160