Employee Retirement and Profit Sharing Plans - Schedule of Information Regarding Participation in Multiemployer Pension Plans (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2013 Agreement
Western Conference of Teamsters Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Collective bargaining agreements	30
Western Conference of Teamsters Pension Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants	15.00%
Dairy Industry Union Pension Plan For Philadelphia Vicinity
Defined Benefit Plan Disclosure [Line Items]
Collective bargaining agreements	3
Dairy Industry Union Pension Plan For Philadelphia Vicinity | Maximum
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants	85.00%
Retail Wholesale Department Store International Union And Industry Pension Fund
Defined Benefit Plan Disclosure [Line Items]
Collective bargaining agreements	10
Retail Wholesale Department Store International Union And Industry Pension Fund | Agreements Expiring In Twenty Fourteen
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants	25.00%
Retail Wholesale Department Store International Union And Industry Pension Fund | Agreements Expiring In Twenty Fifteen
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants	53.00%
Central States Southeast And Southwest Areas Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Collective bargaining agreements	30
Central States Southeast And Southwest Areas Pension Plan | Agreements Expiring In Twenty Fifteen
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants	30.00%
Central States Southeast And Southwest Areas Pension Plan | Agreements Expiring In Twenty Sixteen
Defined Benefit Plan Disclosure [Line Items]
Percentage of agreements representing total employee participants	43.00%