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Fair Value Measures (Narrative) (Details) - USD ($)	Sep. 28, 2019	Dec. 29, 2018
Fair Value Measures [Abstract]
Transfers of financial assets or liabilities	$ 0	$ 0
Non-financial assets	$ 0	$ 0

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- Definition

Fair Value, Assets And Liabilities, Level 1 Between Level 2 Transfers, Amount

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- Definition

Nonfinancial Assets Fair Value Disclosure

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