XML 155 R126.htm IDEA: XBRL DOCUMENT

Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Commitments And Contingencies [Line Items]
Rent expense, net of sub-lease rental income	$ 30.6us-gaap_LeaseAndRentalExpense	$ 31.2us-gaap_LeaseAndRentalExpense	$ 29.7us-gaap_LeaseAndRentalExpense
Collective bargaining agreements expiration	5 years
Workforce Subject to Collective Bargaining Arrangements [Member]
Commitments And Contingencies [Line Items]
Number of employees covered under collective bargaining agreements	2,600
Percentage of employees covered under collective bargaining agreements	23.00%
Workforce Subject to Collective Bargaining Agreements Expiring in 2015 [Member]
Commitments And Contingencies [Line Items]
Number of employees covered under collective bargaining agreements	1,250
Collective bargaining agreements year of expiration	2015
Workforce Subject to Collective Bargaining Arrangements Expiring in 2016 [Member]
Commitments And Contingencies [Line Items]
Number of employees covered under collective bargaining agreements	400
Collective bargaining agreements year of expiration	2016
Workforce Subject to Collective Bargaining Arrangements Expiring in 2017 [Member]
Commitments And Contingencies [Line Items]
Number of employees covered under collective bargaining agreements	600
Collective bargaining agreements year of expiration	2017
Workforce Subject to Collective Bargaining Arrangements Expiring in 2018 [Member]
Commitments And Contingencies [Line Items]
Number of employees covered under collective bargaining agreements	0
Collective bargaining agreements year of expiration	2018
Workforce Subject to Collective Bargaining Arrangements Expiring in 2019 [Member]
Commitments And Contingencies [Line Items]
Number of employees covered under collective bargaining agreements	0
Collective bargaining agreements year of expiration	2019