Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Amount of the required periodic payments applied to principal.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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

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Long-Term Debt (Schedule of Long-term Debt) (Details) ¥ in Millions, $ in Millions	12 Months Ended
	Jul. 31, 2017 JPY (¥)	Jul. 31, 2017 USD ($)	Jul. 31, 2017 USD ($)	Jul. 31, 2016 JPY (¥)	Jul. 31, 2016 USD ($)
Debt Instrument [Line Items]
Debt issuance costs			$ (2.2)		$ (1.6)
Subtotal			587.9		401.4
Less: current maturities			50.6		51.2
Long-term debt			$ 537.3		350.2
Variable rate guaranteed senior note, interest payable quarterly, principal payment of ¥1.00 billion due July 15, 2021 and an interest rate of 0.25% as of July 31, 2017
Debt Instrument [Line Items]
Debt instrument interest rate	0.25%		0.25%
Senior Notes \| 5.48% Unsecured senior notes, interest payable semi-annually, principal payment of $50.0 million due June 1, 2017
Debt Instrument [Line Items]
Long-term debt, gross			$ 0.0		50.0
Debt instrument interest rate	5.48%		5.48%
Debt instrument, maturity date	Jun. 01, 2017	Jun. 01, 2017
Debt instrument periodic principal payment		$ 50.0
Senior Notes \| 5.48% Unsecured senior notes, interest payable semi-annually, principal payment of $25.0 million due September 28, 2017
Debt Instrument [Line Items]
Long-term debt, gross			$ 25.0		25.0
Debt instrument interest rate	5.48%		5.48%
Debt instrument, maturity date	Sep. 28, 2017	Sep. 28, 2017
Debt instrument periodic principal payment		$ 25.0
Senior Notes \| 5.48% Unsecured senior notes, interest payable semi-annually, principal payment of $25.0 million due November 30, 2017
Debt Instrument [Line Items]
Long-term debt, gross			$ 25.0		25.0
Debt instrument interest rate	5.48%		5.48%
Debt instrument, maturity date	Nov. 30, 2017	Nov. 30, 2017
Debt instrument periodic principal payment		$ 25.0
Senior Notes \| 3.72% Unsecured senior notes, interest payable semi-annually, principal payment of $125.0 million due March 27, 2024
Debt Instrument [Line Items]
Long-term debt, gross			$ 125.0		125.0
Debt instrument interest rate	3.72%		3.72%
Debt instrument, maturity date	Mar. 27, 2024	Mar. 27, 2024
Debt instrument periodic principal payment		$ 125.0
Senior Notes \| 2.93% Unsecured senior notes, interest payable semi-annually, principal payment of $25.0 million due April 16, 2025
Debt Instrument [Line Items]
Long-term debt, gross			$ 25.0		25.0
Debt instrument interest rate	2.93%		2.93%
Debt instrument, maturity date	Apr. 16, 2025	Apr. 16, 2025
Debt instrument periodic principal payment		$ 25.0
Senior Notes \| 3.18% Unsecured senior notes, interest payable semi-annually, principal payment of $125.0 million due June 17, 2030
Debt Instrument [Line Items]
Long-term debt, gross			$ 125.0		125.0
Debt instrument interest rate	3.18%		3.18%
Debt instrument, maturity date	Jun. 17, 2030	Jun. 17, 2030
Debt instrument periodic principal payment		$ 125.0
Senior Notes \| Variable rate guaranteed senior note, interest payable quarterly, principal payment of ¥1.65 billion due May 19, 2019 and an interest rate of 0.40% as of July 31, 2017
Debt Instrument [Line Items]
Long-term debt, gross			$ 15.0		16.0
Debt instrument interest rate	0.40%		0.40%
Debt instrument, maturity date	May 19, 2019	May 19, 2019
Debt instrument periodic principal payment \| ¥	¥ 1,650.0
Senior Notes \| Variable rate guaranteed senior note, interest payable quarterly, principal payment of ¥1.00 billion due July 15, 2021 and an interest rate of 0.25% as of July 31, 2017
Debt Instrument [Line Items]
Long-term debt, gross \| ¥	¥ 9.0			¥ 9.7
Debt instrument interest rate	0.25%		0.25%
Debt instrument, maturity date	Jul. 15, 2021	Jul. 15, 2021
Debt instrument periodic principal payment \| ¥	¥ 1,000.0
Line of credit \| Variable rate committed, unsecured $500.0 million revolving credit facility due July 21, 2022 and an interest rate of 2.24% as of July 31, 2017
Debt Instrument [Line Items]
Long-term debt, gross			$ 190.0		0.0
Debt instrument interest rate	2.24%		2.24%
Debt instrument, maturity date	Jul. 21, 2022	Jul. 21, 2022
Debt instrument periodic principal payment		$ 500.0
Term loan \| Variable rate committed, unsecured $50.0 million term loan due July 21, 2020 and an interest rate of 2.24% as of July 31, 2017
Debt Instrument [Line Items]
Long-term debt, gross			$ 50.0		0.0
Debt instrument interest rate	2.24%		2.24%
Debt instrument, maturity date	Jul. 21, 2020	Jul. 21, 2020
Debt instrument periodic principal payment		$ 50.0
Capital lease obligations \| Capitalized lease obligations and other, with various maturity dates and interest rates
Debt Instrument [Line Items]
Long-term debt, gross			$ 1.1		1.9
Terminated interest rate swap contracts \| Terminated interest rate swap contracts
Debt Instrument [Line Items]
Long-term debt, gross			$ 0.0		$ 0.4