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DERIVATIVE FINANCIAL INSTRUMENTS (Details) lb in Millions, $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Dec. 31, 2020 USD ($) lb | Oct. 02, 2021 USD ($) | Sep. 26, 2020 USD ($) | Oct. 02, 2021 USD ($) | Sep. 26, 2020 USD ($)
Derivative Financial Instruments |  |  |  |  |
Income (loss) from discontinued operations, net of tax |  | $ 354.4 | $ 0.1 | $ 357.7 | $ (1.2)
Initial Swaps | Derivative contracts designated as hedging instruments |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Fixed rate |  | 2.535% |  | 2.535% |
Additional Swaps | Derivative contracts designated as hedging instruments |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Aggregate notional amount |  | $ 245.3 |  | $ 245.3 |
Additional Swaps | Derivative contracts designated as hedging instruments | Term loan |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Fixed rate |  | 1.061% |  | 1.061% |
Swaps | Derivative contracts designated as hedging instruments |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Unrealized gain (loss) recorded in AOCI | $ 5.9 | $ 2.2 |  | $ 2.2 |
Derivative fair value | 7.8 | 2.9 |  | 2.9 |
Derivative Liability | 1.4 | 2.4 |  | 2.4 |
FX Forward Contracts |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Aggregate notional amount | 6.3 | $ 8.6 |  | 8.6 |
Commodity contracts |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Unrealized gain (loss) recorded in AOCI | (1.5) |  |  |  |
Income (loss) from discontinued operations, net of tax |  |  |  | $ 0.6 |
Fair value of derivative contract - asset | $ 2.4 |  |  |  |
Commodity contracts | Derivative contracts designated as hedging instruments | Transformer Solutions |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Notional amount of commodity contracts (in pounds of copper) | lb | 3.2 |  |  |  |

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