Derivative Financial Instruments (Summary Of The Amount Of (Loss) Recognized In Accumulated Other Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income ("AOCI") (Effective Portion)	$ 3.0	[1]	$ 4.5	[1]
(Loss) Reclassified from AOCI into Income (Effective Portion)	2.7		(1.8)
(Loss) in Accumulated OCI expected to be recognized in earnings	(6.2)
Natural Gas Commodity Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income ("AOCI") (Effective Portion)	0.8	[1]	0.8	[1]
Foreign Exchange Contracts - Purchases [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income ("AOCI") (Effective Portion)	2.9	[1]	1.2	[1]
Foreign Exchange Contracts - Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income ("AOCI") (Effective Portion)	(0.7)	[1]
(Loss) Reclassified from AOCI into Income (Effective Portion)	1.5
Interest Rate Swap Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income ("AOCI") (Effective Portion)			2.5	[1]
Cost Of Goods Sold [Member] | Natural Gas Commodity Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) Reclassified from AOCI into Income (Effective Portion)	0.7		(1.7)
Cost Of Goods Sold [Member] | Foreign Exchange Contracts - Purchases [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) Reclassified from AOCI into Income (Effective Portion)	$ 0.5		$ (0.1)

[1] As of March 31, 2014 the amount of existing gains in AOCI expected to be recognized in earnings over the next twelve months is $6.2 million.