Fair Value (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012 Juarez Machinery And Equipment Assets [Member]	Dec. 31, 2011 Juarez Machinery And Equipment Assets [Member]	Dec. 31, 2012 Boigny Site Assets Held For Sale [Member]	Dec. 31, 2011 Boigny Site Assets Held For Sale [Member]	Dec. 31, 2013 U S Government Corporations And Agencies Securities [Member]	Dec. 31, 2012 U S Government Corporations And Agencies Securities [Member]	Dec. 31, 2013 Corporate Debt Securities [Member]	Dec. 31, 2012 Corporate Debt Securities [Member]	May 31, 2008 2013 Senior Notes [Member]	May 31, 2008 2018 Senior Notes [Member]	Mar. 31, 2013 2020 Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses included in earnings related to Level 3 securities held at end of period	$ 0	$ 0
Level 1 to Level 2 transfers							8.7	27.7	3.5	2.2
Level 2 to Level 1 transfers							1.5	9.8	2.6	11.8
Basis point liquidity premium added to the applicable discount rate	2.50%
Principal amount											350.0	300.0	400.0
Carrying value				0.9		3.0
Fair value less cost to sell			0.3		1.0
Impairment of long-lived assets held for sale			$ 0.6		$ 1.5