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Cash and Cash Equivalents, Investments, and Funds Held for Customers
 9 Months Ended
Apr. 30, 2021
Cash and Cash Equivalents, Investments and Funds Held for Customers [Abstract]  
Cash And Cash Equivalents Investments And Funds Held For Customers
3. Cash and Cash Equivalents, Investments, and Funds Held for Customers
We consider highly liquid investments with maturities of three months or less at the date of purchase to be cash equivalents. In all periods presented, cash equivalents consist primarily of money market funds and time deposits. Investments consist primarily of investment-grade available-for-sale debt securities. Funds held for customers represent cash held on behalf of our customers that is invested in cash and cash equivalents and investment-grade available-for-sale securities, restricted for use solely for the purpose of satisfying amounts we owe on behalf of our customers. Except for direct obligations of the United States government, securities issued by agencies of the United States government, and money market funds, we diversify our investments in debt securities by limiting our holdings with any individual issuer.
The following table summarizes our cash and cash equivalents, investments, and funds held for customers by balance sheet classification at the dates indicated.
 April 30, 2021July 31, 2020
(In millions)Amortized
Cost		Fair ValueAmortized
Cost		Fair Value
Classification on condensed consolidated balance sheets:    
Cash and cash equivalents$3,164 $3,164 $6,442 $6,442 
Investments948 952 600 608 
Funds held for customers347 348 455 455 
Total cash and cash equivalents, investments, and funds
held for customers		$4,459 $4,464 $7,497 $7,505 
The following table summarizes our cash and cash equivalents, investments, and funds held for customers by investment category at the dates indicated.
 April 30, 2021July 31, 2020
(In millions)Amortized
Cost		Fair ValueAmortized
Cost		Fair Value
Type of issue:    
Total cash, cash equivalents, restricted cash,
and restricted cash equivalents		$3,312 $3,312 $6,697 $6,697 
Available-for-sale debt securities:
Municipal bonds34 34 9 9 
Corporate notes1,057 1,061 744 752 
U.S. agency securities56 57 47 47 
Total available-for-sale debt securities1,147 1,152 800 808 
Total cash, cash equivalents, restricted cash, restricted cash equivalents, and investments$4,459 $4,464 $7,497 $7,505 
We use the specific identification method to compute gains and losses on investments. We include realized gains and losses on our available-for-sale debt securities in interest and other income on our condensed consolidated statements of operations. Gross realized gains and losses on our available-for-sale debt securities for the nine months ended April 30, 2021 and April 30, 2020 were not significant.
We accumulate unrealized gains and losses on our available-for-sale debt securities, net of tax, in accumulated other comprehensive income or loss in the stockholders’ equity section of our condensed consolidated balance sheets, except for certain unrealized losses described below. Gross unrealized gains and losses on our available-for-sale debt securities at April 30, 2021 and July 31, 2020 were not significant.
For available-for sale debt securities in an unrealized loss position, we determine whether a credit loss exists. The estimate of the credit loss is determined by considering available information relevant to the collectibility of the security and information about past events, current conditions, and reasonable and supportable forecasts. The allowance for credit loss is recorded to interest and other income on our condensed consolidated statement of operations, not to exceed the amount of the unrealized loss. Any excess unrealized loss greater than the credit loss at a security level is recognized in accumulated other comprehensive income or loss in the stockholders' equity section of our condensed consolidated balance sheets. We determined there were no credit losses related to available-for-sale securities as of April 30, 2021. Unrealized losses on available-for-sale debt securities at April 30, 2021 were not significant. We do not intend to sell these investments. In addition, it is more likely than not that we will not be required to sell them before recovery of the amortized cost basis, which may be at maturity.
The following table summarizes our available-for-sale debt securities, included in investments and funds held for customers, classified by the stated maturity date of the security at the dates indicated.
 April 30, 2021July 31, 2020
(In millions)Amortized
Cost		Fair ValueAmortized
Cost		Fair Value
Due within one year$419 $421 $389 $390 
Due within two years334 336 256 261 
Due within three years390 391 137 139 
Due after three years4 4 18 18 
Total available-for-sale debt securities$1,147 $1,152 $800 $808 

The following table summarizes our funds held for customers by investment category at the dates indicated.
(In millions)April 30, 2021July 31,
2020
Restricted cash and restricted cash equivalents$148 $255 
Restricted available-for-sale debt securities200 200 
Total funds held for customers$348 $455 
(In millions)April 30, 2020July 31,
2019
Restricted cash and restricted cash equivalents$189 $236 
Restricted available-for-sale debt securities200 200 
Total funds held for customers$389 $436