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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

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- Definition 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). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
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- Definition 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). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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