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Dispositions (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
Dispositions (Details) - USD ($) $ in Millions	Sep. 28, 2019	Sep. 29, 2018	Mar. 31, 2018	Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017	Aug. 31, 2019	Sep. 02, 2018	Jul. 30, 2018	Dec. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on disposition of business				$ 17	$ 42	$ 0
Asset Impairment Charges				$ 94	175	214
Prepared Foods business [Member] \| Prepared Foods [Member] \| Cost of Sales [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset Impairment Charges	$ 41
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] \| Non-Protein Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on disposition of business		$ 11
Asset Impairment Charges			$ 75
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] \| Non-Protein Business [Member] \| Prepared Foods [Member] \| Cost of Sales [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset Impairment Charges					101	$ 45
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] \| Kettle Business [Member] \| Prepared Foods [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration										$ 125
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] \| Kettle Business [Member] \| Prepared Foods [Member] \| Cost of Sales [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on disposition of business					22
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] \| Sara Lee® Frozen Bakery and Van’s® businesses [Member] \| Prepared Foods [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration									$ 623
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] \| Sara Lee® Frozen Bakery and Van’s® businesses [Member] \| Prepared Foods [Member] \| Cost of Sales [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on disposition of business					11
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] \| TNT Crust [Member] \| Prepared Foods [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration								$ 57
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] \| TNT Crust [Member] \| Prepared Foods [Member] \| Cost of Sales [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on disposition of business					$ 9
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations [Member] \| Keystone Further Processing Facility [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset Impairment Charges	$ 41
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] \| Keystone Further Processing Facility [Member] \| Chicken [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration							$ 170