Segment Information (Schedule Of Net Sales And Assets By Geographic Region) (Details) - USD ($) $ in Millions	3 Months Ended									12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015		Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Segment Reporting Information [Line Items]
Net sales	$ 681.6	$ 694.2	$ 712.2	$ 660.0	$ 680.6		$ 669.9	$ 711.2	$ 678.8	$ 2,748.0	$ 2,740.5		$ 2,925.0
Assets	3,428.0				3,336.9					3,428.0	3,336.9		3,445.5
Long-Lived Assets	1,993.6				1,856.6					1,993.6	1,856.6		1,900.7
U.S. [Member]
Segment Reporting Information [Line Items]
Net sales										1,769.7	1,698.6	[1]	1,719.4	[1]
Assets	1,609.4				1,648.3	[1]				1,609.4	1,648.3	[1]	1,612.9	[1]
Long-Lived Assets	621.3				642.0	[1]				621.3	642.0	[1]	596.8	[1]
Canada [Member]
Segment Reporting Information [Line Items]
Net sales										163.2	212.7	[1]	256.4	[1]
Assets	159.8				160.8	[1]				159.8	160.8	[1]	197.6	[1]
Long-Lived Assets	109.0				111.5	[1]				109.0	111.5	[1]	138.8	[1]
United Kingdom [Member]
Segment Reporting Information [Line Items]
Net sales										357.6	350.9	[1]	372.1	[1]
Europe [Member]
Segment Reporting Information [Line Items]
Net sales										279.6	282.2	[1]	365.1	[1]
Assets	588.0				599.2	[1]				588.0	599.2	[1]	662.2	[1]
Long-Lived Assets	357.9				335.7	[1]				357.9	335.7	[1]	363.9	[1]
Other International [Member]
Segment Reporting Information [Line Items]
Net sales										177.9	196.1	[1]	212.0	[1]
Assets	457.8				444.7	[1]				457.8	444.7	[1]	441.8	[1]
Long-Lived Assets	292.4				278.8	[1]				292.4	278.8	[1]	270.2	[1]
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Assets	613.0				483.9	[1]				613.0	483.9	[1]	531.0	[1]
Long-Lived Assets	$ 613.0				$ 488.6	[1]				$ 613.0	$ 488.6	[1]	$ 531.0	[1]

[1] Net sales and assets by geographic region are based on the location of the business unit.