Nature Of Operations (Schedule Of Sales Allocated To Geographic Area) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	$ 2,515.3	$ 2,527.4	$ 2,428.7
Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	1,926.7	1,954.3	1,870.6
Europe, Middle East & Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	346.7	351.3	320.0
Pacific Rim [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	241.9	221.8	238.1
United States [Member] | Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	1,728.3	1,743.8	1,646.5
Canada [Member] | Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	164.9	176.6	187.9
United Kingdom [Member] | Europe, Middle East & Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	80.1	82.3	79.0
Russia [Member] | Europe, Middle East & Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	64.9	68.0	60.0
France [Member] | Europe, Middle East & Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	55.9	55.6	56.2
Saudi Arabia [Member] | Europe, Middle East & Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	20.8	18.1	8.3
Australia [Member] | Pacific Rim [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	92.4	81.3	74.5
China [Member] | Pacific Rim [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	64.2	66.2	80.4
India [Member] | Pacific Rim [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	50.5	40.3	38.7
Other [Member] | Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	33.5	33.9	36.2
Other [Member] | Europe, Middle East & Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	125.0	127.3	116.5
Other [Member] | Pacific Rim [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net trade sales	$ 34.8	$ 34.0	$ 44.5