Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 25, 2015	Sep. 26, 2014	Sep. 25, 2015	Sep. 26, 2014	Dec. 31, 2008	Dec. 31, 2015	Dec. 31, 2014	Mar. 29, 2013	Jan. 23, 2012	Dec. 08, 2011
Income Tax Contingency [Line Items]
Income Taxes Paid					$ 18.0
Effective Tax Rate	21.40%	12.70%	14.60%	11.60%
Effective Income Tax Rate Reconciliation, Deduction, Other, Amount	$ 2.3		$ 6.5
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount			7.1
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	2.6	$ 2.9	2.6	$ 6.9
Other Tax Expense (Benefit)	(1.1)
Unrecognized Tax Benefits	378.9		378.9				$ 341.1
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 51.1		$ 51.1				$ 45.8
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)
Minimum Tax Return Examination Years 2004 Through 2007 [Member]
Income Tax Contingency [Line Items]
Income Tax Examination, Appeal Process Term			2 years
Maximum Tax Return Examination Years 2004 Through 2007 [Member]
Income Tax Contingency [Line Items]
Income Tax Examination, Appeal Process Term			3 years
Scenario, Forecast [Member] | Minimum Tax Return Examination Years 2004 Through 2007 [Member] | Tax Return Examination Years 2004 through 2007 [Member]
Income Tax Contingency [Line Items]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority						$ (40.0)
Scenario, Forecast [Member] | Maximum Tax Return Examination Years 2004 Through 2007 [Member] | Tax Return Examination Years 2004 through 2007 [Member]
Income Tax Contingency [Line Items]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority						$ (50.0)