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COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended
--- | --- | ---
Sep. 23, 2019 | Mar. 31, 2020
Loss Contingencies [Line Items] |  |
Purchase commitments |  | $ 293.8
Financing of acquisition of software |  | $ 97.6
Period of vendor financing arrangement |  | 2 years
Purchase commitments due remainder of 2020 |  | $ 47.6
Purchase commitments due in 2021 |  | 64.9
Purchase commitments due in 2022 |  | 66.9
Purchase commitments due in 2023 |  | $ 16.8
Frontline Case | Performance Guarantee |  |
Loss Contingencies [Line Items] |  |
Damages awarded | $ 135.2 |

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