Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 01, 2017	Dec. 02, 2016	Nov. 27, 2015
Cash flows from operating activities:
Net income	$ 1,693,954	$ 1,168,782	$ 629,551
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion	325,997	331,535	339,473
Stock-based compensation	451,451	349,912	335,859
Deferred income taxes	51,605	24,222	(69,657)
Gain on the sale of property	0	0	(21,415)
Unrealized (gains) losses on investments	(5,494)	3,145	(9,210)
Excess tax benefits from stock-based compensation	0	(75,105)	(68,153)
Other non-cash items	4,625	2,022	1,216
Changes in operating assets and liabilities, net of acquired assets and assumed liabilities:
Trade receivables, net	(187,173)	(160,416)	(79,502)
Prepaid expenses and other current assets	28,040	(71,021)	(7,701)
Trade payables	(45,186)	(6,281)	22,870
Accrued expenses	154,125	64,978	(22,564)
Income taxes payable	(34,493)	43,115	97,934
Deferred revenue	475,402	524,840	320,801
Net cash provided by operating activities	2,912,853	2,199,728	1,469,502
Cash flows from investing activities:
Purchases of short-term investments	(1,931,011)	(2,285,222)	(2,064,833)
Maturities of short-term investments	759,737	769,228	371,790
Proceeds from sales of short-term investments	1,393,929	860,849	1,176,476
Acquisitions, net of cash acquired	(459,626)	(48,427)	(826,004)
Purchases of property and equipment	(178,122)	(203,805)	(184,936)
Proceeds from sale of property	0	0	57,779
Purchases of long-term investments, intangibles and other assets	(29,918)	(58,433)	(22,779)
Proceeds from sale of long-term investments	2,134	5,777	4,149
Net cash used for investing activities	(442,877)	(960,033)	(1,488,358)
Cash flows from financing activities:
Purchases of treasury stock	(1,100,000)	(1,075,000)	(625,000)
Proceeds from issuance of treasury stock	158,351	145,697	164,270
Taxes paid related to net share settlement of equity awards	(240,126)	(236,400)	(186,373)
Excess tax benefits from stock-based compensation	0	75,105	68,153
Proceeds from Issuance of Debt	0	0	989,280
Repayment of debt and capital lease obligations	(1,960)	(108)	(602,189)
Debt issuance costs	0	0	(8,828)
Net cash used for financing activities	(1,183,735)	(1,090,706)	(200,687)
Effect of foreign currency exchange rates on cash and cash equivalents	8,516	(14,234)	(21,297)
Net increase (decrease) in cash and cash equivalents	1,294,757	134,755	(240,840)
Cash and cash equivalents at beginning of year	1,011,315	876,560	1,117,400
Cash and cash equivalents at end of year	2,306,072	1,011,315	876,560
Supplemental disclosures:
Cash paid for income taxes, net of refunds	396,668	249,884	203,010
Cash paid for interest	69,430	66,193	56,014
Non-cash investing activities:
Investment in lease receivable applied to building purchase	80,439	0	0
Issuance of common stock and stock awards assumed in business acquisitions	$ 10,348	$ 0	$ 677