Income Taxes (Narrative) (Details) - USD ($) $ in Millions		12 Months Ended
	Oct. 07, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Contingency [Line Items]
Change in valuation allowances		$ 313.1
Change in valuation allowances		(275.1)	$ (39.0)	$ (62.2)
Cumulative temporary differences		1,400.0
Unrecognized tax benefits - favorable impact on effective income tax rate if ultimately recognized, net of valuation allowances		347.0	337.9	378.7
Income tax penalties and interest expense	$ 110.0	59.6	$ 38.4	$ 25.7
Accrued interest and penalties on tax related items		262.9
Liability for settlement with taxing authority		315.0
Maximum
Income Tax Contingency [Line Items]
Reductions to our unrecognized tax benefits reasonably possible		$ 345.0
Income Tax Contingency | Tax Year 2018
Income Tax Contingency [Line Items]
Damages sought	$ 284.0