Derivative Financial Instruments (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Nov. 30, 2016	Apr. 01, 2016
Derivative [Line Items]
Intercompany loans outstanding	$ 0	$ 0
Interest expense		49,800,000	$ 45,300,000	$ 46,000,000
Gain reclassified from AOCI into income		(7,900,000)	400,000	2,300,000
Gain in AOCI expected to be recognized in earnings over the next twelve months		3,200,000
Not Designated As Hedging Instrument [Member]
Derivative [Line Items]
Gain (loss) recognized in income for derivative instruments		$ 0	0	29,600,000
Term Loan B [Member]
Derivative [Line Items]
Notional amount						$ 100,000,000
Term A Swap [Member]
Derivative [Line Items]
Notional amount			250,000,000
Trade date		Apr. 16, 2013
Maturity date		Mar. 31, 2018
Term Loan A Swaps [Member]
Derivative [Line Items]
Notional amount					$ 450,000,000	200,000,000
Maturity date		Mar. 31, 2021
Term Loan A Swaps [Member] | Interest Expense [Member]
Derivative [Line Items]
Gain reclassified from AOCI into income	2,400,000
Commodity Price Risk [Member]
Derivative [Line Items]
Maximum length of time hedged in cash flow hedge		24 months
Notional amount	7,400,000	$ 7,400,000	9,200,000
Gain (loss) recognized on hedge ineffective portion		$ 0	0	0
Foreign Exchange Contracts, Sales and Purchases [Member]
Derivative [Line Items]
Maximum length of time hedged in cash flow hedge		15 months
Notional amount	34,600,000	$ 34,600,000	38,400,000
Foreign Exchange Contracts, Intercompany Loans and Dividends [Member]
Derivative [Line Items]
Notional amount	0	0	6,100,000
Gain (loss) recognized in income for derivative instruments				30,000,000
Interest Rate Swap Contracts [Member]
Derivative [Line Items]
Gain (loss) recognized on hedge ineffective portion			0	$ 0
Interest Rate Swap Contracts [Member] | Interest Expense [Member]
Derivative [Line Items]
Gain reclassified from AOCI into income		(8,300,000)	$ (800,000)
Interest Rate Swap Contracts [Member] | Term Loan B Swaps Settled [Member]
Derivative [Line Items]
Notional amount						$ 450,000,000
Interest Rate Swap Contracts [Member] | Term Loan B [Member] | Minimum [Member]
Derivative [Line Items]
LIBOR floor						0.75%
Interest Rate Swap Contracts [Member] | Term Loan B [Member] | Reclassification From Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Interest expense		10,700,000
Interest Rate Swap Contracts [Member] | Term Loan A Swaps [Member]
Derivative [Line Items]
Notional amount	$ 450,000,000	$ 450,000,000