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Cash and Investments | 9 Months Ended
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Jun. 01, 2017
Investments [Abstract] |
Cash and Investments | Cash and Investments Cash and equivalents and the fair values of our available-for-sale investments, which approximated amortized costs, were as follows:
As of |  | June 1, 2017 |  | September 1, 2016
|  | 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 |  | $ | 2,110 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,110 |  |  | $ | 2,258 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,258 |
Level 1(2) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | 1,528 |  |  | — |  |  | — |  |  | 1,528 |  |  | 1,507 |  |  | — |  |  | — |  |  | 1,507 |
Level 2(3) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | — |  |  | 172 |  |  | 256 |  |  | 428 |  |  | — |  |  | 142 |  |  | 235 |  |  | 377 |
Certificates of deposit |  | 380 |  |  | 9 |  |  | 8 |  |  | 397 |  |  | 373 |  |  | 33 |  |  | — |  |  | 406 |
Government securities |  | 6 |  |  | 61 |  |  | 76 |  |  | 143 |  |  | 2 |  |  | 62 |  |  | 82 |  |  | 146 |
Asset-backed securities |  | — |  |  | 4 |  |  | 131 |  |  | 135 |  |  | — |  |  | 12 |  |  | 97 |  |  | 109 |
Commercial paper |  | 24 |  |  | 36 |  |  | — |  |  | 60 |  |  | — |  |  | 9 |  |  | — |  |  | 9 |
|  | $ | 4,048 |  |  | $ | 282 |  |  | $ | 471 |  |  | $ | 4,801 |  |  | $ | 4,140 |  |  | $ | 258 |  |  | $ | 414 |  |  | $ | 4,812 |
(1) | The maturities of long-term marketable investments 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 analysis to validate information obtained from these pricing services. No adjustments were made to such pricing information as of June 1, 2017.
Proceeds from sales of available-for-sale securities were $194 million and $742 million for the third quarter and first nine months of 2017, respectively, and $902 million and $1.89 billion for the third quarter and first nine months of 2016, respectively. Gross realized gains and losses from sales of available-for-sale securities were not material for any period presented. As of June 1, 2017, there were no available-for-sale securities that had been in a loss position for longer than 12 months. Restricted cash, included in other noncurrent assets and excluded from the table above, was $98 million and $122 million as of June 1, 2017 and September 1, 2016, respectively.

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- Definition The entire disclosure of cash, cash equivalents, and debt and equity securities, including any unrealized or realized gain (loss). + References No definition available. + Details
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