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SIGNIFICANT ACCOUNTING POLICIES - Net EAC Adjustments (Details) - Contracts Accounted for under Percentage of Completion - USD ($) $ / shares in Units, $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 03, 2020 | Jun. 28, 2019 | Jun. 29, 2018 | Jun. 30, 2017
Change in Accounting Estimate [Line Items] |  |  |  |
Net EAC adjustments, before income taxes | $ 137 | $ 17 | $ (19) | $ (1)
Net EAC adjustments, net of income taxes | $ 103 | $ 13 | $ (13) | $ (1)
Net EAC adjustments, net of income taxes, per diluted share (in dollars per share) | $ 0.46 | $ 0.10 | $ (0.11) | $ (0.01)

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