Revolving Credit Agreement (Details) - USD ($)	1 Months Ended	3 Months Ended
Apr. 30, 2021	Oct. 30, 2021	Apr. 30, 2020
Line of Credit Facility [Abstract]
Borrowing capacity	$ 800,000,000		$ 800,000,000
Expansion option	$ 200,000,000		$ 200,000,000
Reference rate	LIBOR
Basis spread on variable rate, condition one	1.75%
Quarterly availability, percentage of commitment fee maximum for condition one	50.00%
Basis spread on variable rate, condition two	1.50%
Quarterly availability, percentage of commitment fee minimum for condition two	50.00%
Commitment fee for unused borrowings, condition one	0.30%
Unused borrowings, percentage of total commitment maximum for condition one	35.00%
Commitment fee for unused borrowings, condition two	0.25%
Unused borrowings, percentage of total commitment minimum for condition two	35.00%
Minimum line of credit availability for no financial covenant requirements		$ 80,000,000
Borrowings outstanding		0
Letters of credit issued		20,100,000
Unutilized credit facility borrowing capacity		$ 779,900,000

Debt Instrument, Basis Spread On Variable Rate, Condition One

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- Definition

Debt Instrument, Basis Spread On Variable Rate, Condition Two

+ References

No definition available.

+ Details

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- Definition

Represents the line of credit availability for the entity to have no financial covenant requirements.

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility, Quarterly Availability, Percentage Of Commitment Fee Maximum, For Condition One

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility, Quarterly Availability, Percentage Of Commitment Fee Minimum, For Condition Two

+ References

No definition available.

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- Definition

Line Of Credit Facility, Quarterly Availability, Unused Capacity, Commitment Fee Percentage, Maximum For Condition One

+ References

No definition available.

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- Definition

Line Of Credit Facility, Quarterly Availability, Unused Capacity, Commitment Fee Percentage, Minimum For Condition Two

+ References

No definition available.

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- Definition

Line Of Credit Facility, Unused Capacity, Commitment Fee Percentage, Condition One

+ References

No definition available.

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- Definition

Line Of Credit Facility, Unused Capacity, Commitment Fee Percentage, Condition Two

+ References

No definition available.

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- Definition

Line of Credit Facility, Expansion Option

+ References

No definition available.

+ Details

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-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=120398452&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-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=120400017&loc=d3e572229-122910

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- References

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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