Employee Retirement and Profit Sharing Plans - Schedule of Information Regarding Participation in Multiemployer Pension Plans (Detail)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Western Conference of Teamsters Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Employer Identification Number	916145047	[1]
Pension Plan Number	100	[1]
PPA Zone Status	Green	[1]	Green	[1]
FIP / RP Status Pending/ Implemented	NA	[1]
Extended Amortization Provisions	No	[1]
Expiration Date of Associated Collective Bargaining Agreement(s), First	May 31, 2014	[1]
Expiration Date of Associated Collective Bargaining Agreement(s), Last	Oct. 31, 2016	[1]
Central States Southeast And Southwest Areas Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Employer Identification Number	366044243	[2]
Pension Plan Number	100	[2]
PPA Zone Status	Red	[2]	Red	[2]
FIP / RP Status Pending/ Implemented	Implemented	[2]
Extended Amortization Provisions	No	[2]
Expiration Date of Associated Collective Bargaining Agreement(s), First	Mar. 31, 2014	[2]
Expiration Date of Associated Collective Bargaining Agreement(s), Last	Mar. 11, 2017	[2]
Retail Wholesale Department Store International Union And Industry Pension Fund
Defined Benefit Plan Disclosure [Line Items]
Employer Identification Number	630708442	[3]
Pension Plan Number	100	[3]
PPA Zone Status	Green	[3]	Green	[3]
FIP / RP Status Pending/ Implemented	NA	[3]
Extended Amortization Provisions	Yes	[3]
Expiration Date of Associated Collective Bargaining Agreement(s), First	Feb. 01, 2014	[3]
Expiration Date of Associated Collective Bargaining Agreement(s), Last	Aug. 27, 2017	[3]
Dairy Industry Union Pension Plan For Philadelphia Vicinity
Defined Benefit Plan Disclosure [Line Items]
Employer Identification Number	236283288	[4]
Pension Plan Number	100	[4]
PPA Zone Status	Red	[4]	Red	[4]
FIP / RP Status Pending/ Implemented	Implemented	[4]
Extended Amortization Provisions	Yes	[4]
Expiration Date of Associated Collective Bargaining Agreement(s), First	Jun. 30, 2014	[4]
Expiration Date of Associated Collective Bargaining Agreement(s), Last	Sep. 30, 2017	[4]

[1] We are party to approximately 30 collective bargaining agreements that require contributions to this plan. These agreements cover a large number of employee participants and expire on various dates between 2014 and 2016. We do not believe that any one agreement is substantially more significant than another as none of these agreements individually represent greater than 15% of the total employee participants covered under this plan.

[2] There are approximately 30 collective bargaining agreements that govern our participation in this plan. The agreements expire on various dates between 2014 and 2017. The agreements expiring in 2015 represent approximately 30% of our total employee participants in this plan, and the agreements expiring in 2016 represent approximately 43% of our total participants in the plan. The remaining agreements have a wide variety of expiration dates between 2014 and 2017 and do not individually represent a significant percentage of our overall participants to this plan.

[3] We are subject to approximately 10 collective bargaining agreements with respect to this plan. Approximately 25% and 53% of our employee participants in this plan are covered by the agreements expiring in 2014 and 2015, respectively.

[4] We are party to three collective bargaining agreements with respect to this plan. The agreement expiring in September 2017 is the most significant as more than 85% of our employee participants in this plan are covered by that agreement.