Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value Disclosures [Abstract]

Estimated Fair Value of Financial Instruments

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

	June 30, 2016						December 31, 2015
	Carrying amount			Estimated fair value			Carrying amount			Estimated fair value
Assets (Liabilities), net:
Total long-term debt, including current portion	$	(873.8	)	$	(870.6	)	$	(988.3	)	$	(989.4	)
Foreign currency contracts		0.8			0.8			3.3			3.3
Natural gas contracts		0.3			0.3			(0.8	)		(0.8	)
Interest rate swap contracts		(7.6	)		(7.6	)		(10.6	)		(10.6	)

Fair Value Measurement of Assets and Liabilities

The fair value measurement of assets and liabilities measured at fair value on a recurring basis and reported on the consolidated balance sheets is summarized below: 

	June 30, 2016					December 31, 2015
	Fair value based on					Fair value based on
	Quoted, active markets		Other observable inputs			Quoted, active markets		Other observable inputs
	Level 1		Level 2			Level 1		Level 2
Assets (Liabilities), net:
Foreign currency contracts	$	0.8		-		$	3.3		-
Natural gas contracts		-	$	0.3			-	$	(0.8	)
Interest rate swap contracts		-		(7.6	)		-		(10.6	)