Summary Of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 years	Dec. 31, 2010	Dec. 31, 2009
Maturity of cash and cash equivalents in months	3
Cash pledged as collateral	$ 6.9
FIFO inventory	248.4
Percentage of FIFO inventory	80.00%
LIFO inventory	63.3
Percentage of LIFO inventory	20.00%
Finite-lived intangible assets, useful life, minimum	5
Finite-lived intangible assets, useful life, maximum	25
Warranty period after time of sale, months	12
Income tax benefit percentage	50.00%
Research and development expense	$ 39.3	$ 35.9	$ 36.0
Building [Member]
Property, plant and equipment, useful life, minimum	10
Property, plant and equipment, useful life, maximum	50
Machinery And Equipment [Member]
Property, plant and equipment, useful life, minimum	7
Property, plant and equipment, useful life, maximum	15
Tooling, Dies, Patterns, Etc [Member]
Property, plant and equipment, useful life, minimum	3
Property, plant and equipment, useful life, maximum	7
Office Furniture And Equipment [Member]
Property, plant and equipment, useful life, minimum	3
Property, plant and equipment, useful life, maximum	10