Long-term Debt - Summary of Components of Convertible Notes (Details) - 4.125% Convertible senior notes due september 1, 2022 - Convertible senior notes - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Principal	$ 294,000,000	$ 150,000,000
Accrued interest	1,000,000	2,000,000
Less: Unamortized financing costs	(6,000,000)	(3,000,000)
Carrying value of convertible notes	$ 289,000,000	$ 149,000,000

Debt instrument accrued interest.

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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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.

+ Details

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- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

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- Details

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- Details

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