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Segment Reporting (Narrative) (Details) $ in Millions	3 Months Ended			9 Months Ended
Segment Reporting (Narrative) (Details) $ in Millions	Mar. 28, 2026 USD ($)	Dec. 27, 2025 USD ($)	Jun. 28, 2025 USD ($)	Jun. 27, 2026 USD ($) Segments	Jun. 28, 2025 USD ($)
Segment Reporting [Line Items]
Number of Reportable Segments \| Segments				5
Network Optimization Plan
Segment Reporting [Line Items]
Restructuring and Related Cost, Incurred Cost			$ 24	$ 195	$ 33
International \| Network Optimization Plan
Segment Reporting [Line Items]
Restructuring and Related Cost, Incurred Cost				(1)	11
Beef [Member] \| Network Optimization Plan
Segment Reporting [Line Items]
Restructuring and Related Cost, Incurred Cost				128	48
Pork [Member] \| Network Optimization Plan
Segment Reporting [Line Items]
Restructuring and Related Cost, Incurred Cost				1	0
Corporate Segment \| Network Optimization Plan
Segment Reporting [Line Items]
Restructuring and Related Cost, Incurred Cost				6	0
Broiler Antitrust Civil Litigation [Member]
Segment Reporting [Line Items]
Loss Contingency Accrual, Loss (Reversal of Loss)			$ 0		0
Beef Antitrust Civil Litigation
Segment Reporting [Line Items]
Loss Contingency Accrual, Loss (Reversal of Loss)				193
Beef Antitrust Civil Litigation \| Beef [Member]
Segment Reporting [Line Items]
Loss Contingency Accrual, Loss (Reversal of Loss)		$ 90		90	93
Pork Antitrust Litigation \| Pork [Member]
Segment Reporting [Line Items]
Loss Contingency Accrual, Loss (Reversal of Loss)	$ 250	$ 60		60	250
Income Statement Location [Axis]: us-gaap:CostOfRevenue \| Network Optimization Plan
Segment Reporting [Line Items]
Restructuring and Related Cost, Incurred Cost				161	31
Income Statement Location [Axis]: us-gaap:CostOfRevenue \| International \| Network Optimization Plan
Segment Reporting [Line Items]
Restructuring and Related Cost, Incurred Cost				(1)	11
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Restructuring and Related Cost, Incurred Cost				127	48
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Restructuring and Related Cost, Incurred Cost				14	2
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Restructuring and Related Cost, Incurred Cost				0	0
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Restructuring and Related Cost, Incurred Cost				1	0
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Segment Reporting [Line Items]
Restructuring and Related Cost, Incurred Cost				1	0
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