Acquisitions and Divestitures (Assets Acquired and Liability Assumed) (Details) (USD $) In Millions, unless otherwise specified	Sep. 28, 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
Intangible assets					5.9
Goodwill	173.5	[2]	171.4	[2]	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 represents gross contractual value. As of the acquisition date, the fair value of accounts receivable approximated carrying value.

[2] See Note 23 - Restatement of Condensed Consolidated Financial Statements