Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Estimated Fair Value of Financial Instruments

The estimated fair values of our financial instruments are as follows:

	December 31, 2019						December 31, 2018
	Carrying amount			Estimated fair value			Carrying amount			Estimated fair value
Assets/(liabilities), net:
Total long-term debt, including current portion	$	(610.8	)	$	(610.8	)	$	(819.8	)	$	(811.3	)
Interest rate swap contracts		(14.3	)		(14.3	)		3.5			3.5