Acquisitions (Details) (USD $) Share data in Millions, unless otherwise specified	12 Months Ended			3 Months Ended	6 Months Ended
	Jun. 28, 2014 customer	Jun. 29, 2013	Jun. 30, 2012	Dec. 28, 2013 US Foods Proposed Merger [Member] customer	Dec. 31, 2014 Forecast [Member] US Foods Proposed Merger [Member]	Dec. 31, 2014 Forecast [Member] US Foods Proposed Merger [Member] Common Stock [Member]	Dec. 31, 2014 December 2013 Estimate [Member] Forecast [Member] US Foods Proposed Merger [Member]	Dec. 31, 2014 December 2013 Estimate [Member] Forecast [Member] US Foods Proposed Merger [Member] Common Stock [Member]	Dec. 31, 2014 August 2014 Estimate [Member] Forecast [Member] US Foods Proposed Merger [Member]	Dec. 31, 2014 August 2014 Estimate [Member] Forecast [Member] US Foods Proposed Merger [Member] Common Stock [Member]
Significant Acquisitions and Disposals [Line Items]
Acquisition of businesses, net of cash acquired	$ 79,338,000	$ 397,447,000	$ 110,601,000
Contingent consideration maximum number of years	3 years
Potential cash payout for contingent consideration arrangements	70,600,000
Amount of recorded earnout liabilities	55,200,000
Number of customers	425,000			200,000
Net equity acquired							3,500,000,000		3,700,000,000
Consideration transferred, value of common stock issued								3,000,000,000		3,200,000,000
Consideration transferred, cash payment							500,000,000		500,000,000
Consideration transferred, assumed or refinanced debt							4,700,000,000		4,800,000,000
Consideration transferred, total enterprise value							8,200,000,000		8,500,000,000
Consideration transferred, number of shares issued						87
Consideration transferred, percentage ownership represented by number of shares issued						13.00%
Payment required if merger were cancelled					$ 300,000,000