Cash And Cash Equivalents And Available For Sale Securities, Amortized Cost Basis

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- Definition

Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Fair Value Disclosure

+ References

No definition available.

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- Definition

Cash and Cash Equivalents and Available-for-sale Securities, Fair Value Disclosure

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No definition available.

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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)
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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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- Definition

Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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.

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- Definition

Amount of realized gain (loss) 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://www.xbrl.org/2003/role/recommendedDisclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
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Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

No definition available.

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- Definition

Amount of long-term investments classified as other.

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-Publisher FASB
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-Topic 944
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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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No definition available.

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Cash and Cash Equivalents, Investments, and Funds Held for Customers - Type of issue (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended		12 Months Ended
	Jan. 31, 2018	Jan. 31, 2019	Jan. 31, 2018	Jul. 31, 2018	Jul. 31, 2017
Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash, and restricted cash equivalents	$ 700	$ 1,309	$ 700	$ 1,631	$ 701
Available-for-sale securities:
Available-for-sale debt securities, amortized cost		459		454
Available-for-sale debt securities		458		452
Total cash and cash equivalents, investments, and funds held for customers, Amortized Cost		1,781		2,098
Total cash and cash equivalents, investments, and funds held for customers, Fair Value		1,780		2,096
Gross realized gains (losses) on available for sale debt securities	$ 0	0	$ 0
Unrealized gain (loss) on available for sale debt securities		0		0
Total cash, cash equivalents, restricted cash, and restricted cash equivalents
Cash and Cash Equivalents Items [Line Items]
Cash, cash equivalents, restricted cash, and restricted cash equivalents		1,309		1,631
Cash, cash equivalents, restricted cash, and restricted cash equivalents, fair value		1,309		1,631
Municipal bonds
Available-for-sale securities:
Available-for-sale debt securities, amortized cost		9		31
Available-for-sale debt securities		9		31
Corporate notes
Available-for-sale securities:
Available-for-sale debt securities, amortized cost		435		414
Available-for-sale debt securities		434		412
U.S. agency securities
Available-for-sale securities:
Available-for-sale debt securities, amortized cost		15		9
Available-for-sale debt securities		15		9
Other long-term investments
Available-for-sale securities:
Other long-term investments, amortized cost		13		13
Estimate of Fair Value Measurement \| Other long-term investments
Available-for-sale securities:
Other long-term investments, amortized cost		$ 13		$ 13