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Pension and Other Postretirement Benefit Plans (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended
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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 + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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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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Namespace Prefix: |
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Balance Type: |
Period Type: |