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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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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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- 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.

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Debt Obligations (Details) - USD ($) $ in Millions				3 Months Ended
Debt Obligations (Details) - USD ($) $ in Millions	Dec. 31, 2020	Oct. 14, 2020	May 02, 2018	Dec. 31, 2020	Oct. 13, 2020	Dec. 31, 2019
Credit Facility [Line Items]
Credit facility expiration period			3 years
Credit facility, maximum borrowing capacity		$ 775
Amount outstanding, gross	$ 325			$ 325		$ 225
Weighted average interest rate during period	2.19%			2.19%		3.51%
Existing term loans
Credit Facility [Line Items]
Repayment				$ 225
Revolving Credit Facility
Credit Facility [Line Items]
Repayment				$ 100
Credit Facility
Credit Facility [Line Items]
Credit facility expiration period		3 years
Committed capacity		$ 625
Revolving Credit Facility
Credit Facility [Line Items]
Credit facility, maximum borrowing capacity		$ 300			$ 275
Credit facility, commitment fee rate	0.35%