Estimated period over which accrued environmental remediation liabilities are likely to be paid.

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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- Definition

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.

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- Definition

The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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Commitments and Contingencies - Environmental remediation (Details) - Environmental liabilities - USD ($) $ in Millions	12 Months Ended
	Jan. 04, 2020	Dec. 29, 2018	Dec. 30, 2017
Environmental Remediation
Environmental reserves	$ 76
Estimated period over which accrued environmental remediation liabilities are likely to be paid	10 years
Accrued environmental remediation liabilities classified as current liabilities	$ 14
Expenditures to evaluate and remediate contaminated sites	13	$ 13	$ 18
Minimum
Environmental Remediation
Potential environmental liabilities	40
Maximum
Environmental Remediation
Potential environmental liabilities	$ 150