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Dispositions (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
Dispositions (Details) - USD ($) $ in Millions	Sep. 29, 2018	Mar. 31, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017	Oct. 01, 2016	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				$ 42	$ 0	$ 0
Asset Impairment Charges				175	214	$ 45
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	$ 45
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