Employee Benefit Plans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 26, 2014	Sep. 27, 2013	Jun. 29, 2012	Sep. 26, 2014	Sep. 27, 2013
Restructuring Cost and Reserve [Line Items]
Loss that will be amortized from accumulated other comprehensive income in the next year				$ (5.2)
Defined benefit pension plan cash contributions	3.3	2.4		9.9	7.2
Pre-tax non-cash settlement loss			$ (4.5)

Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (obligation).

No definition available.

Name:	us-gaap_DefinedBenefitPlanAmountToBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossNextFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration