Share-Based Compensation (Expense Related to Non-vested Stock Awards) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 27, 2014		Jun. 28, 2013		Jun. 27, 2014		Jun. 28, 2013
Total pre-tax share-based compensation expense	$ 5.2		$ 3.7		$ 9.2		$ 6.5
Excess tax benefit (deficiency) on share-based compensation (1)	(0.1)	[1]	0	[1]	(0.1)	[1]	0.1	[1]
Non-Qualified Stock Option Expense [Member]
Total pre-tax share-based compensation expense	0.5		1.6		1.8		2.7
Non-Vested Stock Awards Expense [Member]
Total pre-tax share-based compensation expense	4.0		2.1		6.7		3.8
Immediately Vested Stock Awards Expense [Member]
Total pre-tax share-based compensation expense	$ 0.7		$ 0		$ 0.7		$ 0

[1] Cash inflows (outflows) recognized as financing activities in the Condensed Consolidated Statements of Cash Flows.