Leases (Impact of Leases to Consolidated Condensed Financial Statements) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Weighted-average remaining lease term	7 years	8 years
Weighted-average discount rate	3.30%	3.60%
Operating cash flows from operating leases	$ 160.9	$ 153.6
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 136.7	$ 81.2