Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 27, 2015 Rate	Mar. 28, 2014 Rate	Dec. 31, 2008	Dec. 31, 2014	Dec. 08, 2011	Jan. 23, 2012	Mar. 29, 2013
Income Tax Contingency [Line Items]
Income Taxes Paid			$ 18.0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Effective Tax Rate	6.70%	10.50%
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount	7.1
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations		4.0
Other Tax Expense (Benefit)		0.9
Unrecognized Tax Benefits	348.9			341.1
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	47.3			45.8
Deferred Charge, Current	2.2
Deferred Charge, Non-current	16.4
Business Combination, Indemnification Assets, Amount as of Acquisition Date	6.5
Tax Return Examination Years 2002 through 2004 [Member]
Income Tax Contingency [Line Items]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority					19.8
Tax Return Examination Years 2005 through 2007 [Member]
Income Tax Contingency [Line Items]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority						21.4
Tax Return Examination Years 2004 through 2007 [Member]
Income Tax Contingency [Line Items]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority							$ (6.8)