Acquisitions and Divestitures (Assets Acquired and Liability Assumed - Prestolite) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Nov. 02, 2012 Prestolite [Member]
Business Acquisition [Line Items]
Cash				$ 0.7
Accounts receivable				22.7
Inventories				17.3
Property, plant, and equipment				24.6
Amortized intangible assets, net	67.1	46.4		11.7
Goodwill				7.8
Goodwill	184.4	168.1	178.5
Other current and noncurrent assets				2.0
Total Assets				86.8
Current liabilities				20.1
Other liabilities				7.2
Total liabilities				$ 27.3