EQUITY AND STOCK-BASED COMPENSATION - Assumptions used to determine fair value of grants awarded (Details) - Restricted stock units
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3 Months Ended |
Mar. 05, 2020 |
Mar. 28, 2020 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Illiquidity discount |
|
14.60%
|
| Annual Expected Stock Price Volatility |
35.80%
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| Annual Expected Dividend Yield |
0.00%
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| Risk-free Interest Rate |
1.14%
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| Correlations Between Total Shareholder Return for SPX FLOW and Individual Companies in the Composite Group |
0.4167
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| Composite Group Plan |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
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| Annual Expected Stock Price Volatility |
29.90%
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| Risk-free Interest Rate |
1.14%
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| Minimum |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Correlations Between Total Shareholder Return for SPX FLOW and Individual Companies in the Composite Group |
0.1110
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|
| Maximum |
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
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| Correlations Between Total Shareholder Return for SPX FLOW and Individual Companies in the Composite Group |
0.7351
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