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Income Taxes - Narrative (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021 USD ($)
Minimum
Income Taxes
Number of tax years open for state tax audit (in years)	3 years
Maximum
Income Taxes
Number of tax years open for state tax audit (in years)	5 years
Domestic Tax Authority
Income Taxes
Operating loss carryforwards	$ 1,600.0
Operating loss carryforwards, subject to expiration	800.0
Operating loss carryforwards, not subject to expiration	800.0
Tax credit carryforward, amount	$ 33.5

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Income Taxes [Line Items]

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Number of Taxable Years Open For Tax Audit

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are not subject to expiration dates.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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-Publisher FASB
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-Section 50
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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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