Derivative Financial Instruments (Fair Values of Derivative Instruments) (Details) (USD $) In Millions, unless otherwise specified	Sep. 26, 2014		Dec. 27, 2013
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	$ 12.3
Net fair value of hedges recognized as a loss in accumulated other comprehensive income (AOCI) that will be transferred to earnings during the next 12 months	5.0
Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Derivative at Fair Value	13.4	[1],[2]	2.8	[1]
Other Noncurrent Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Derivative at Fair Value	5.0	[1],[2]	0	[1]
Total Asset Derivatives [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Derivative at Fair Value	18.4	[1],[2]	2.8	[1]
Accounts Payable and Accrued Expenses [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Derivative at Fair Value	1.1	[1],[2]	5.3	[1]
Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Derivative at Fair Value	0	[1],[2]	0.8	[1]
Total Liability Derivatives [Member]
Derivatives, Fair Value [Line Items]
Foreign Currency Cash Flow Hedge Derivative at Fair Value	$ 1.1	[1],[2]	$ 6.1	[1]

[1] 1) See Note 15, "Fair Value Measurements", for fair value disclosures.

[2] We expect that a net gain of $12.3 million will be transferred to earnings during the next 12 months and a net gain of $5.0 million will be transferred to earnings during the last quarter of 2015 through the end of 2016, along with the earnings effect of the related forecasted transactions.