Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2018

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Summary of Interest Rate Swaps

Trade Date	Notional Amount		Coverage Period	Risk Coverage
November 13, 2016	$	200.0	November 2016 to March 2021	USD-LIBOR
April 1, 2016	$	100.0	April 2016 to March 2023	USD-LIBOR
November 28, 2018	$	200.0	November 2018 to November 2023	USD-LIBOR
November 28, 2018	$	100.0	March 2021 to March 2025	USD-LIBOR

Summary of Fair Value of Derivative Instruments on Consolidated Balance Sheet

	Derivative Assets					Derivative Liabilities
		Fair Value					Fair Value
	Balance Sheet Location	December31, 2018		December31, 2017		Balance Sheet Location	December 31, 2018		December 31, 2017
Derivatives designated as hedging instruments
Natural gas    commodity contracts	Other current assets	$	-	$	-	Accounts payable and accrued expenses	$	-	$	0.5
Foreign exchange    contracts	Other current assets		-		-	Accounts payable and accrued expenses		-		0.7
Interest rate swap    contracts	Other current assets		-		0.2	Accounts payable and accrued expenses		-		-
Natural gas    commodity contracts	Other non-current assets		-		-	Other long-term liabilities		-		0.1
Foreign exchange    contracts	Other non-current assets		-		-	Other long-term liabilities		-		0.1
Interest rate swap    contracts	Other non-current assets		9.6		8.7	Other long-term liabilities		6.1		-
Total derivatives designated as hedging instruments		$	9.6	$	8.9		$	6.1	$	1.4

Summary of Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income

	Amount of (Loss) Gain Recognized in Accumulated Other Comprehensive Income (“AOCI”) (Effective Portion)									Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
	2018			2017			2016				2018			2017			2016
Derivatives in Cash Flow Hedging Relationships
Natural gas commodity contracts	$	0.7		$	(1.3	)	$	0.6		Cost of goods sold	$	0.1		$	0.3		$	(1.2	)
Foreign exchange contracts –      purchases		0.1			(0.5	)		-		Cost of goods sold		-			-			-
Foreign exchange contracts –      sales		0.7			(1.8	)		(2.9	)	Net sales		-			0.1			1.4
Interest rate swap contracts		(2.0	)		2.2			6.8		Interest expense		(1.6	)		(0.9	)		(8.3	)
Total	$	(0.5	)	$	(1.4	)	$	4.5		Total gain (loss) from continuing      operations		(1.5	)		(0.5	)		(8.1	)
										Total (loss) gain from discontinued      operations		-			(0.1	)		0.2
										Total gain (loss)	$	(1.5	)	$	(0.6	)	$	(7.9	)