Supplemental Guarantor Information - Subsidiary Guarantees - Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018
Supplemental Guarantor Information [Line Items]
Current assets	$ 8,661,610		$ 8,141,505
Intercompany receivables	0		0
Investment in subsidiaries	0		0
Plant and equipment, net	4,593,890		4,501,705
Other assets	6,116,534		5,323,312
Total assets	19,372,034		17,966,522
Current liabilities	6,931,968		6,103,183
Intercompany payables	0		0
Long-term debt	8,092,914		8,122,058
Other liabilities	1,785,556		1,203,252
Noncontrolling interest	34,070		35,426
Shareholders’ equity	2,527,526	$ 2,454,748	2,502,603	$ 2,167,636	$ 2,638,574	$ 2,506,957
Total liabilities and shareholders’ equity	19,372,034		17,966,522
Reportable Legal Entities | Sysco
Supplemental Guarantor Information [Line Items]
Current assets	123,848		121,993
Intercompany receivables	6,545,764		6,162,303
Investment in subsidiaries	5,877,563		4,680,530
Plant and equipment, net	235,093		252,101
Other assets	820,636		787,986
Total assets	13,602,904		12,004,913
Current liabilities	1,371,102		465,101
Intercompany payables	1,364,060		686,116
Long-term debt	7,636,689		7,668,314
Other liabilities	703,527		682,779
Noncontrolling interest	0		0
Shareholders’ equity	2,527,526		2,502,603
Total liabilities and shareholders’ equity	13,602,904		12,004,913
Reportable Legal Entities | Certain U.S. Broadline Subsidiaries
Supplemental Guarantor Information [Line Items]
Current assets	4,414,664		4,195,543
Intercompany receivables	102,177		30,469
Investment in subsidiaries	0		0
Plant and equipment, net	2,220,719		2,162,668
Other assets	728,806		718,600
Total assets	7,466,366		7,107,280
Current liabilities	923,600		1,018,650
Intercompany payables	3,284,353		3,443,182
Long-term debt	9,557		7,938
Other liabilities	550,395		545,391
Noncontrolling interest	0		0
Shareholders’ equity	2,698,461		2,092,119
Total liabilities and shareholders’ equity	7,466,366		7,107,280
Reportable Legal Entities | Other Non-Guarantor Subsidiaries
Supplemental Guarantor Information [Line Items]
Current assets	4,123,098		3,823,969
Intercompany receivables	3,675,995		3,220,237
Investment in subsidiaries	1,244,417		1,126,315
Plant and equipment, net	2,138,078		2,086,936
Other assets	5,134,269		4,372,725
Total assets	16,315,857		14,630,182
Current liabilities	4,637,266		4,619,432
Intercompany payables	5,675,523		5,283,711
Long-term debt	446,668		445,806
Other liabilities	1,098,811		531,081
Noncontrolling interest	34,070		35,426
Shareholders’ equity	4,423,519		3,714,726
Total liabilities and shareholders’ equity	16,315,857		14,630,182
Eliminations
Supplemental Guarantor Information [Line Items]
Current assets	0		0
Intercompany receivables	(10,323,936)		(9,413,009)
Investment in subsidiaries	(7,121,980)		(5,806,845)
Plant and equipment, net	0		0
Other assets	(567,177)		(555,999)
Total assets	(18,013,093)		(15,775,853)
Current liabilities	0		0
Intercompany payables	(10,323,936)		(9,413,009)
Long-term debt	0		0
Other liabilities	(567,177)		(555,999)
Noncontrolling interest	0		0
Shareholders’ equity	(7,121,980)		(5,806,845)
Total liabilities and shareholders’ equity	$ (18,013,093)		$ (15,775,853)