Share-Based Compensation (Expense Related to Non-vested Stock Awards) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012		Apr. 01, 2011
Total pre-tax share-based compensation expense	$ 3.5		$ 2.7
Excess tax benefit on share-based compensation	0.1	[1],[2]	0.7	[1],[2]
Non-Qualified Stock Option Expense [Member]
Total pre-tax share-based compensation expense	1.4		1.1
Non-Vested Stock Awards Expense [Member]
Total pre-tax share-based compensation expense	$ 2.1		$ 1.6

[1] See Note 22 - Restatement of Condensed Consolidated Financial Statements (Unaudited)

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