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Pension and Other Postretirement Benefit Plans (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 27, 2020	Mar. 28, 2020
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Gain from Providing Special and Contractual Termination Benefits	$ 6	$ 110

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- Definition

Defined Benefit Plan, Gain from Providing Special and Contractual Termination Benefits

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No definition available.

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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.

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No definition available.

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- Details

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