Debt Instrument, Covenant, Debt To EBITDA Ratio, Maximum

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- Definition

Debt Instrument, Covenant, EBITDA To Annual Interest Expense Ratio, Minimum

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Maturity Date Extension

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility, Increase Limit

+ References

No definition available.

+ Details

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- Definition

Line of Credit Facility, Face Amount

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Master Credit Agreement Amount

+ References

No definition available.

+ Details

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- Definition

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Amount of cash paid for interest. Includes, but is not limited to, payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585

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Period Type:	duration

- Definition

Fair value of the amount outstanding under the credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611

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Period Type:	instant

- Definition

Amount of long-term debt and capital lease obligations including current maturities.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Current Liabilities - Narrative (Details)		3 Months Ended	6 Months Ended
Current Liabilities - Narrative (Details)	Feb. 01, 2016 USD ($) extension	Jan. 31, 2018 USD ($)	Jan. 31, 2018 USD ($)	Jan. 31, 2017 USD ($)	Jul. 31, 2017 USD ($)
Debt Instrument [Line Items]
Short-term debt		$ 690,000,000	$ 690,000,000		$ 50,000,000
Proceeds from borrowings under revolving credit facility			800,000,000	$ 150,000,000
February 1, 2016 Credit Agreement
Debt Instrument [Line Items]
Debt instrument, term	5 years
Master credit agreement	$ 1,500,000,000
February 1, 2016 Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Proceeds from borrowings under revolving credit facility		800,000,000
February 1, 2016 Credit Agreement \| Term Loan
Debt Instrument [Line Items]
Interest Paid			5,000,000	5,000,000
February 1, 2016 Credit Agreement \| Line of Credit
Debt Instrument [Line Items]
Debt to EBITDA ratio (not greater than)	3.25
EBITDA to interest payable ratio (not less than)	3.00
February 1, 2016 Credit Agreement \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Unsecured revolving credit facility	$ 1,000,000,000
Revolving credit facility, increase limit	$ 250,000,000
Unsecured revolving credit facility extension \| extension	2
Fair value of amount outstanding		640,000,000	640,000,000
Interest Paid			3,000,000	$ 1,000,000
February 1, 2016 Credit Agreement \| Line of Credit \| Revolving Credit Facility \| Base Rate \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.00%
February 1, 2016 Credit Agreement \| Line of Credit \| Revolving Credit Facility \| Base Rate \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
February 1, 2016 Credit Agreement \| Line of Credit \| Revolving Credit Facility \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.90%
February 1, 2016 Credit Agreement \| Line of Credit \| Revolving Credit Facility \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
February 1, 2016 Credit Agreement \| Line of Credit \| Term Loan
Debt Instrument [Line Items]
Unsecured term loan	$ 500,000,000	463,000,000	463,000,000
Short-term debt		$ 50,000,000	$ 50,000,000
February 1, 2016 Credit Agreement \| Line of Credit \| Term Loan \| Base Rate \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.125%
February 1, 2016 Credit Agreement \| Line of Credit \| Term Loan \| Base Rate \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	0.875%
February 1, 2016 Credit Agreement \| Line of Credit \| Term Loan \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.125%
February 1, 2016 Credit Agreement \| Line of Credit \| Term Loan \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.875%