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SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) employee in Thousands, $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Apr. 03, 2020 business	Jan. 03, 2020 USD ($) site	Jan. 01, 2021 USD ($) employee site country	Jun. 28, 2019 USD ($)	Jun. 29, 2018 USD ($)
Business Combination, Separately Recognized Transactions [Line Items]
Number of countries in which entity operates | country			100
Number of employees | employee			48
Number of businesses transferred | business	2
Internal use software, useful life minimum		3 years
Internal use software, useful life maximum		10 years
Threshold for separate line item reporting of total current assets or total assets in Consolidated Balance Sheets		5.00%	5.00%
Threshold for separate line item reporting of total current liabilities or total liabilities in Consolidated Balance Sheet		5.00%	5.00%
Revenue recognized from performance obligations satisfied in previous periods | $		$ 170	$ 493	$ 59	$ 43
Number of sites with future environmental liabilities | site		84
Number of sites owned | site			9
Number of sites associated with former locations or operations | site			65
Number of treatment or disposal sites not owned | site			10
Accrual for environment loss contingencies | $			$ 117
Engineers And Scientists
Business Combination, Separately Recognized Transactions [Line Items]
Number of employees | employee			19
Maximum | Building
Business Combination, Separately Recognized Transactions [Line Items]
Property, plant and equipment, useful life		45 years
Maximum | Machinery and Equipment
Business Combination, Separately Recognized Transactions [Line Items]
Property, plant and equipment, useful life		10 years
Minimum | Building
Business Combination, Separately Recognized Transactions [Line Items]
Property, plant and equipment, useful life		2 years
Minimum | Machinery and Equipment
Business Combination, Separately Recognized Transactions [Line Items]
Property, plant and equipment, useful life		2 years
Other current assets
Business Combination, Separately Recognized Transactions [Line Items]
Capitalized costs to obtain or fulfill a contract | $		$ 14	$ 14
Other non-current assets
Business Combination, Separately Recognized Transactions [Line Items]
Capitalized costs to obtain or fulfill a contract | $		$ 48	$ 35

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Treatment Or Disposal Sites Not Owned By Company That Contain Hazardous Substances Allegedly Attributable To Company From Past Operations

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

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