Maximum period a tax credit can be carried forward.

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Maximum percentage of annual taxable income allowed to use of the tax credit carryforward.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible general business tax credit carryforwards.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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

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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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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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Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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Income Taxes Carryforwards (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Tax Credit Carryforward [Line Items]
Valuation allowance	$ 683.0	$ 1,457.1
Undistributed Earnings of Foreign Subsidiaries	1,200.0
Net Operating Loss Carryforward
Tax Credit Carryforward [Line Items]
Net operating loss	1,600.0
Foreign Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	628.6
Valuation allowance	249.6
Foreign Tax Credit Carryforward \| Tax Year 2023 Or Earlier
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	70.3
Foreign Tax Credit Carryforward \| Tax Year 2026 Or Earlier
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	238.6
Foreign Tax Credit Carryforward \| Tax Year 2028 Or Earlier
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	18.3
Foreign Tax Credit Carryforward \| Tax Year 2029 Or Earlier
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	30.5
Foreign Tax Credit Carryforward \| Tax Year 2030 Or Earlier
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount	$ 12.3
Foreign Tax Authority
Tax Credit Carryforward [Line Items]
Maximum percentage of annual taxable income allowed to use of the tax credit carryforward	30.00%
Foreign Tax Authority \| Net Operating Loss Carryforward
Tax Credit Carryforward [Line Items]
Net operating loss	$ 634.0
Domestic Tax Authority \| Net Operating Loss Carryforward
Tax Credit Carryforward [Line Items]
Maximum Period to Utilize Tax Credits	20 years
Non-US
Tax Credit Carryforward [Line Items]
General Business Deferred Tax Assets	$ 1.4