Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			12 Months Ended
	Mar. 29, 2013 Rate	Mar. 30, 2012 Rate	Dec. 31, 2012	Dec. 31, 2008 Tax Return Examination Years 2002 through 2004 [Member]	Dec. 08, 2011 Tax Return Examination Years 2002 through 2004 [Member]	Mar. 29, 2013 Tax Return Examination Years 2005 through 2007 [Member]	Jan. 23, 2012 Tax Return Examination Years 2005 through 2007 [Member]	Dec. 31, 2010 Tax Return Examination Years 2005 through 2007 [Member]
Income Tax Contingency [Line Items]
Proposed tax adjustment from examination				$ 34.5	$ 19.8	$ 6.8	$ 21.4	$ 34.2
Income Taxes Paid				18.0
Effective Tax Rate	(2.60%)	1.70%
Income Tax Holiday, Aggregate Dollar Amount	10.6
Income Tax Benefit from Expiration Statutes of Limitations[US]	6.9
Income Tax Benefit from Expiration Statutes of Limitation[Non-US]	5.2
Unrecognized Tax Benefits	282.2		275.9
Payments of Interest and Penalties Related to Uncertain Tax Positions (Approximately)	$ 49.3		$ 48.8