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FAIR VALUE - Narrative (Details) - Senior Notes - Senior Notes Due 2026 - USD ($) $ in Millions | Sep. 28, 2019 | Dec. 29, 2018 | Apr. 03, 2018
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Stated interest rate |  |  | 5.50%
Book Value |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument value | $ 500.0 | $ 500.0 |
Estimated Fair Value |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument value | $ 530.0 | $ 495.0 |

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