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LEASE COMMITMENTS - Narrative (Details) $ in Millions |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Nov. 24, 2020 USD ($) engineer | Jan. 01, 2021 USD ($) | Jan. 03, 2020 USD ($) | Dec. 28, 2018 USD ($) | Dec. 31, 2021 USD ($) | Jan. 01, 2021 USD ($) | Jan. 03, 2020 USD ($) | Jun. 28, 2019 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Operating lease cost |  |  | $ 88 |  | $ 172 | $ 176 |  |
Operating lease expense |  |  |  |  |  |  |  | $ 73
Non-cash impairment charges for long-lived assets |  |  | $ 46 | $ 0 | 207 | 767 | $ 46 | $ 0
CTS |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Impairment of long-lived assets |  |  |  |  | 56 |  |  |
Impairment charge for ROU asset |  |  |  |  | 19 |  |  |
CTS | Aviation Systems |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Impairment of long-lived assets |  |  |  |  | $ 145 |  |  |
Commercial Aviation Solutions |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Impairment of long-lived assets |  |  |  |  |  | 257 |  |
Commercial Aviation Solutions | COVID |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Impairment of long-lived assets |  | $ 103 |  |  |  |  |  |
Non-cash impairment charges for long-lived assets |  | 257 |  |  |  |  |  |
Impairment charge for ROU asset |  | $ 31 |  |  |  |  |  |
Commercial Aviation Solutions | Lease Termination | COVID |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Impairment charge for ROU asset |  |  |  |  |  | 5 |  |
Parcel of land and manufacturing facility | CALIFORNIA |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |
Gross proceeds from sale and leaseback transaction | $ 92 |  |  |  |  |  |  |
Net Proceeds From Sale and Leaseback Transaction | 66 |  |  |  |  |  |  |
Closing costs on sale and leaseback transaction | 2 |  |  |  |  |  |  |
Residual value of guaranteed payment on sale and leaseback transaction | $ 24 |  |  |  |  |  |  |
Term of lease contract | 16 months |  |  |  |  |  |  |
Number of lease extension options | engineer | 2 |  |  |  |  |  |  |
Term of lease extensions | 1 month |  |  |  |  |  |  |
Pre-tax gain on sale and leaseback transaction |  |  |  |  |  | $ 22 |  |

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