Retirement Plans - Contributions to Multiemployer Pension Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Dec. 27, 2014
Multiemployer Plans [Line Items]
USF Contributions	$ 32,636	$ 33,630	$ 32,044
Western Conference of Teamsters Pension Trust Fund [Member]
Multiemployer Plans [Line Items]
USF Contributions	10,104	$ 10,227	$ 9,761
USF Contributions Exceed 5% of Total Plan contributions		false	false
Minneapolis Food Distributing Industry Pension Plan [Member]
Multiemployer Plans [Line Items]
USF Contributions	5,162	$ 5,200	$ 5,026
USF Contributions Exceed 5% of Total Plan contributions		true	true
Teamster Pension Trust Fund of Philadelphia and Vicinity [Member]
Multiemployer Plans [Line Items]
USF Contributions	3,442	$ 3,461	$ 3,163
USF Contributions Exceed 5% of Total Plan contributions		false	false
Truck Drivers & Helpers Local 355 Pension Fund [Member]
Multiemployer Plans [Line Items]
USF Contributions	648	$ 1,321	$ 1,373
USF Contributions Exceed 5% of Total Plan contributions		true	true
Local 703 I.B. of T. Grocery and Food Employees Pension Plan [Member]
Multiemployer Plans [Line Items]
USF Contributions	1,258	$ 1,366	$ 1,282
USF Contributions Exceed 5% of Total Plan contributions		true	true
United Teamsters Trust Fund A [Member]
Multiemployer Plans [Line Items]
USF Contributions	1,668	$ 1,554	$ 1,537
USF Contributions Exceed 5% of Total Plan contributions		true	true
Warehouse Employees Local 169 and Employers Joint Pension Fund [Member]
Multiemployer Plans [Line Items]
USF Contributions	900	$ 897	$ 907
USF Contributions Exceed 5% of Total Plan contributions		true	true
Warehouse Employees Local No. 570 Pension Fund [Member]
Multiemployer Plans [Line Items]
USF Contributions	457	$ 908	$ 863
USF Contributions Exceed 5% of Total Plan contributions		true	true
Local 705 I.B. of T. Pension Trust Fund [Member]
Multiemployer Plans [Line Items]
USF Contributions	2,923	$ 2,729	$ 2,479
USF Contributions Exceed 5% of Total Plan contributions		false	false
Other Funds [Member]
Multiemployer Plans [Line Items]
USF Contributions	$ 6,074	$ 5,967	$ 5,653
USF Contributions Exceed 5% of Total Plan contributions		false	false