Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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

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Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Income Taxes Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Income Taxes Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2017	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%	21.00%	35.00%
Tax Adjustments, Settlements, and Unusual Provisions			$ 174.6
Effective Income Tax Rate Reconciliation, Percent	(34.90%)	27.50%	69.50%	26.10%
Income Taxes Paid, Net			$ 1.3
Income tax receivable	$ 485.0		485.0			$ 14.7
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions			307.1
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions			$ 169.7