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Pension and Retiree Medical Benefits Narrative (Details) - USD ($)	8 Months Ended
	Sep. 07, 2019	Sep. 08, 2018
Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer, Discretionary	$ 150,000,000	$ 1,400,000,000
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer, Discretionary	$ 17,000,000	17,000,000
Postemployment Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer, Discretionary		$ 37,000,000

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- Definition

Defined Benefit Plan, Contributions by Employer, Discretionary

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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