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
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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.

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

Debt Instrument, Extension Term

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- Definition

Amount of debt issuance cost capitalized during the period.

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The contingent increase above the maximum borrowing capacity under the credit facility, if any one or more of the existing banks or new banks agree to provide such increased commitment amount.

+ References

No definition available.

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Debt (Details) - USD ($)	1 Months Ended	12 Months Ended
Debt (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2021	Jun. 30, 2018
2018 Credit Agreement
Debt
Outstanding balance	$ 800,000,000	$ 800,000,000
2018 Credit Agreement \| Other current assets
Debt
Debt issuance costs capitalized		2,400,000
2018 Credit Agreement \| Other non-current assets
Debt
Debt issuance costs capitalized		$ 6,900,000
First unsecured revolving credit facility
Debt
Borrowing capacity			$ 1,000,000,000
Second unsecured revolving credit facility
Debt
Borrowing capacity			500,000,000
Increase in borrowing capacity			$ 300,000,000
Term of maturity date extension	1 year