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Cash and Investments (Tables) | 3 Months Ended
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Nov. 30, 2017
Investments [Abstract] |
Cash and equivalents and the fair values of available-for-sale investments | Cash and equivalents and the fair values of our available-for-sale investments, which approximated amortized costs, were as follows:
As of |  | November 30, 2017 |  | August 31, 2017
|  | Cash and Equivalents |  | Short-term Investments |  | Long-term Marketable Investments(1) |  | Total Fair Value |  | Cash and Equivalents |  | Short-term Investments |  | Long-term Marketable Investments(1) |  | Total Fair Value
Cash |  | $ | 1,850 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,850 |  |  | $ | 2,237 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,237 |
Level 1(2) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | 3,971 |  |  | — |  |  | — |  |  | 3,971 |  |  | 2,332 |  |  | — |  |  | — |  |  | 2,332 |
Level 2(3) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | 3 |  |  | 96 |  |  | 156 |  |  | 255 |  |  | — |  |  | 193 |  |  | 315 |  |  | 508 |
Certificates of deposit |  | 169 |  |  | 7 |  |  | 3 |  |  | 179 |  |  | 483 |  |  | 24 |  |  | 3 |  |  | 510 |
Government securities |  | 5 |  |  | 45 |  |  | 65 |  |  | 115 |  |  | 1 |  |  | 90 |  |  | 126 |  |  | 217 |
Asset-backed securities |  | — |  |  | 13 |  |  | 90 |  |  | 103 |  |  | — |  |  | 2 |  |  | 173 |  |  | 175 |
Commercial paper |  | 10 |  |  | 5 |  |  | — |  |  | 15 |  |  | 56 |  |  | 10 |  |  | — |  |  | 66 |
|  | 6,008 |  |  | $ | 166 |  |  | $ | 314 |  |  | $ | 6,488 |  |  | 5,109 |  |  | $ | 319 |  |  | $ | 617 |  |  | $ | 6,045 |
Restricted cash(4) |  | 122 |  |  |  |  |  |  |  |  | 107 |  |  |  |  |  |  |
Cash, cash equivalents, and restricted cash |  | $ | 6,130 |  |  |  |  |  |  |  |  | $ | 5,216 |  |  |  |  |  |  |
(1) | The maturities of long-term marketable securities range from one to four years.
(2) | The fair value of Level 1 securities is measured based on quoted prices in active markets for identical assets.
(3) | The fair value of Level 2 securities is measured using information obtained from pricing services, which obtain quoted market prices for similar instruments, non-binding market consensus prices that are corroborated by observable market data, or various other methodologies, to determine the appropriate value at the measurement date. We perform supplemental analyses to validate information obtained from these pricing services. No adjustments were made to the fair values indicated by such pricing information as of November 30, 2017 or August 31, 2017.
(4) | Restricted cash is included in other noncurrent assets and primarily represents balances related to the MMJ Creditor Payments and interest reserve balances related to the 2021 MSTW Term Loan.

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- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=75019621&loc=d3e62557-112803 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27198-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=75019621&loc=d3e62586-112803 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 + Details
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