Cash, Cash Equivalents and Short-Term Investments (Details) - USD ($) $ in Thousands	Nov. 30, 2018	Dec. 01, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 3,254,290	$ 5,831,289
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	45	2,705
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(25,373)	(14,220)
Cash, Cash Equivalents, and Short-term Investments, Fair Value Disclosure	3,228,962	5,819,774
Cash and cash equivalents [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,642,775	2,306,072
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Cash and Cash Equivalents, Fair Value Disclosure	1,642,775	2,306,072
Cash [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	368,564	280,488
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Cash and Cash Equivalents, Fair Value Disclosure	368,564	280,488
Cash equivalents [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,274,211	2,025,584
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Cash and Cash Equivalents, Fair Value Disclosure	1,274,211	2,025,584
Cash equivalents [Member] \| Money market mutual funds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,234,188	2,006,741
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Cash and Cash Equivalents, Fair Value Disclosure	1,234,188	2,006,741
Cash equivalents [Member] \| Time deposits [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	40,023	18,843
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Cash and Cash Equivalents, Fair Value Disclosure	40,023	18,843
Short-term investments [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,611,515	3,525,217
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	45	2,705
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(25,373)	(14,220)
Available For Sale Securities Fair Value Disclosure	1,586,187	3,513,702
Short-term fixed income securities [Member] \| Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	41,875	98,403
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	1
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(367)	(403)
Available For Sale Securities Fair Value Disclosure	41,508	98,001
Short-term fixed income securities [Member] \| Corporate debt securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,546,860	2,461,691
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	44	2,694
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(24,696)	(10,125)
Available For Sale Securities Fair Value Disclosure	1,522,208	2,454,260
Short-term fixed income securities [Member] \| Foreign government securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	4,179	2,396
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(24)	(8)
Available For Sale Securities Fair Value Disclosure	4,155	2,388
Short-term fixed income securities [Member] \| Municipal securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	18,601	21,189
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1	8
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(286)	(132)
Available For Sale Securities Fair Value Disclosure	$ 18,316	21,065
Short-term fixed income securities [Member] \| US Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		941,538
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		2
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		(3,552)
Available For Sale Securities Fair Value Disclosure		$ 937,988

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-Publisher FASB
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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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