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VENTURE CAPITAL INVESTMENTS - Additional Information (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jul. 01, 2017 | Jun. 30, 2018 | Jul. 01, 2017
Schedule of Equity Method Investments [Line Items] |  |  |  |
Committed contribution | $ 109,100,000 |  | $ 109,100,000 |
Venture capital investments | 60,700,000 |  | 60,700,000 |
Dividends received | 1,500,000 | $ 0 | 8,500,000 | $ 4,400,000
Gain (loss) from venture capital investments | $ 10,900,000 | $ 2,500,000 | $ 17,400,000 | $ 6,700,000
Minimum |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Ownership percentage | 1.00% |  | 1.00% |
Maximum |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Ownership percentage | 12.00% |  | 12.00% |

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