Legal Tax Proceedings (Details) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013 Mexican Federal Tax Authority [Member] USD ($)	Sep. 30, 2013 Mexican Federal Tax Authority [Member] MXN	Sep. 30, 2013 U.S. Customs and Border Protection [Member] USD ($)
Income Tax Examination [Line Items]
Unpaid duties			$ 12.4
Preliminary unpaid duties			14.3
Penalties and interest assessed	22.0	280.0
Surety bond	$ 26.0	321.0