Share-Based Compensation (Expense Related to Non-vested Stock Awards) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2013		Mar. 30, 2012
Total pre-tax share-based compensation expense	$ 2.8		$ 3.5
Excess tax benefit on share-based compensation	0.1	[1]	0.1	[1]
Non-Qualified Stock Option Expense [Member]
Total pre-tax share-based compensation expense	1.1		1.4
Non-Vested Stock Awards Expense [Member]
Total pre-tax share-based compensation expense	$ 1.7		$ 2.1

[1] Cash inflows (outflows) recognized as financing activities in the condensed consolidated statements of cash flows.