Financial Instruments and Fair Value Measurements - Amount of Gains (Losses) Recognized in Accumulated Other Comprehensive Income Net of Reclassification into Earnings (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Interest Rate Swap	$ 1.4	$ (9.9)	$ (10.3)	$ (13.7)