Supplementary Data Other Expense, Net (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other Expense, Net [Abstract]
Gain (Loss) on Extinguishment of Debt	$ (74,000,000.0)	$ 0.0
Gain (Loss) on Disposition of Business	(12,500,000)	(23,300,000)
Other Expense, Net, Other	(2,600,000)	(1,500,000)
Other Nonoperating Income (Expense)	$ (83,900,000)	$ (21,800,000)