Acquisitions and Divestitures (Assets Acquired and Liability Assumed - Alcon Cable) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Sep. 04, 2012 Alcan Cable [Member] North America [Member]
Business Acquisition [Line Items]
Cash			$ 0
Accounts receivable			74.7	[1]
Inventories			70.7
Property, plant, and equipment			72.7
Amortized intangible assets, net	67.1	46.4	5.9
Goodwill			3.5
Other current and noncurrent assets			2.2
Total Assets			229.7
Current liabilities			57.1
Other liabilities			1.3
Total liabilities			$ 58.4

[1] Accounts receivable is gross contractual value. As of the acquisition date, the fair value of accounts receivable approximated carrying value.