Note 9. Income Taxes Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%	35.00%
Net Tax Expense (Benefit) Impact, CARES Act	$ 180.4
Income (Loss) from Continuing Operations before Income Taxes, Domestic	(487.1)	$ 201.1	$ 139.8
Income (Loss) from Continuing Operations before Income Taxes, Foreign	$ (7.4)	$ (0.4)	$ 11.8

Net Tax Expense (Benefit) Impact, CARES Act

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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-Publisher FASB
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The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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