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Valuation And Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 03, 2020 | Sep. 28, 2019 | Sep. 29, 2018
Allowance for Doubtful Accounts [Member] |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Period | $ 21 | $ 19 | $ 34
Charged to Costs and Expenses | 9 | 4 | 3
Charged to Other Accounts | 0 | 0 | 0
(Deductions) | (4) | (2) | (18)
Balance at End of Period | 26 | 21 | 19
Inventory Lower of Cost or Market Allowance [Member] |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Period | 34 | 25 | 3
Charged to Costs and Expenses | 102 | 61 | 68
Charged to Other Accounts | 0 | 0 | 0
(Deductions) | (109) | (52) | (46)
Balance at End of Period | 27 | 34 | 25
Valuation Allowance on Deferred Tax Assets [Member] |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Period | 86 | 79 | 75
Charged to Costs and Expenses | 35 | 13 | 12
Charged to Other Accounts | 13 | 6 | 0
(Deductions) | (7) | (12) | (8)
Balance at End of Period | $ 127 | $ 86 | $ 79

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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- Definition Amount of decrease in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column D)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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