Stock-based Compensation - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 4.8	$ 4.8	$ 10.1	$ 10.5
Stock awards, weighted average grant-date fair value			$ 11.74	$ 10.89
2008 Omnibus Stock Incentive Plan | Restricted Shares and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	2.8	2.5	5.8	5.8
2008 Omnibus Stock Incentive Plan | Restricted Shares and Restricted Stock Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
2008 Omnibus Stock Incentive Plan | Restricted Shares and Restricted Stock Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
2008 Omnibus Stock Incentive Plan | Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 2.0	$ 2.3	$ 4.3	$ 4.7