Debt and Financing Lease Obligations - Senior Notes (Details) - USD ($)	Jul. 31, 2020	Jul. 01, 2014
Debt Instrument [Line Items]
Original principal amount	$ 1,304,690,000
Senior Notes [Member] \| Senior Unsecured Notes Due July 2022 [Member]
Debt Instrument [Line Items]
Original principal amount		$ 250,000,000.0
Interest rate on notes (in hundredths)		7.25%
Effective interest rate		7.80%
Restrictions on payment of dividends, amount free from restriction	$ 172,300,000
Trigger amount under indenture		$ 25,000,000.0

Debt Instrument, Debt Default, Trigger Amount Under Indenture

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- Definition

Debt Instrument, Restrictions on Payment of Dividends, Amount Free from Restriction

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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- Definition

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

+ References

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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.

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