Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2016	Dec. 31, 2015
Income Tax Contingency [Line Items]
Deferred tax liability not recognized, amount of unrecognized deferred tax liability, undistributed earnings of foreign subsidiaries		$ 3,400.0
Statutory tax rate		21.00%	19.00%	19.00%
Valuation allowance, amount		$ 443.6	$ 603.5
Unrecognized tax benefit		391.1	92.1	$ 96.3		$ 185.7
Unrecognized tax benefits that impact effective tax rate		127.1
Accrued interest and penalties		86.7	17.2
Interest expense (income) related to uncertain tax positions		6.0		(35.2)	$ (18.3)
Amount of unrecognized deferred tax liability		$ 80.0
Deduction limit of GILTI tax		50.00%
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized tax benefit — beginning of year		$ 391.1	$ 92.1	$ 96.3		$ 185.7
Unrecognized tax benefits that impact effective tax rate		127.1
U.S. Federal Tax Authority
Income Tax Contingency [Line Items]
Net operating loss carryforwards		15.1
U.S. State Tax Authority
Income Tax Contingency [Line Items]
Net operating loss carryforwards		2,930.0
Foreign
Income Tax Contingency [Line Items]
Net operating loss carryforwards		1,010.0
Credit carryforward		294.5
Indefinite | Foreign
Income Tax Contingency [Line Items]
Net operating loss carryforwards		933.2
2016 through 2035 | Foreign
Income Tax Contingency [Line Items]
Net operating loss carryforwards		$ 73.2
Scenario, Forecast
Income Tax Contingency [Line Items]
Deduction limit of GILTI tax	37.50%