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SHAREHOLDERS' EQUITY (Tables) | 12 Months Ended
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Dec. 31, 2023
Stockholders' Equity Note [Abstract] |
Activity included in accumulated other comprehensive loss table | The following table represents the activity included in accumulated other comprehensive loss:
| Foreign Currency Translation |  | Cash Flow Hedges |  | Pension and Postretirement Benefits |  | Total
Accumulated Other Comprehensive Loss | ($ in millions)
Balance at January 1, 2021 | $ | 19.4 |  |  | $ | 21.4 |  |  | $ | (730.7) |  |  | $ | (689.9) |
Unrealized (losses) gains | (30.3) |  |  | 182.0 |  |  | 249.7 |  |  | 401.4 |
Reclassification adjustments of (gains) losses into income | — |  |  | (180.1) |  |  | 54.3 |  |  | (125.8) |
Tax provision | — |  |  | (0.5) |  |  | (73.2) |  |  | (73.7) |
Net change | (30.3) |  |  | 1.4 |  |  | 230.8 |  |  | 201.9 |
Balance at December 31, 2021 | (10.9) |  |  | 22.8 |  |  | (499.9) |  |  | (488.0) |
Unrealized (losses) gains | (27.7) |  |  | (15.6) |  |  | 72.1 |  |  | 28.8 |
Reclassification adjustments of (gains) losses into income | — |  |  | (58.2) |  |  | 35.5 |  |  | (22.7) |
Tax benefit (provision) | — |  |  | 18.5 |  |  | (32.5) |  |  | (14.0) |
Net change | (27.7) |  |  | (55.3) |  |  | 75.1 |  |  | (7.9) |
Balance at December 31, 2022 | (38.6) |  |  | (32.5) |  |  | (424.8) |  |  | (495.9) |
Unrealized losses | (1.1) |  |  | (53.6) |  |  | (18.1) |  |  | (72.8) |
Reclassification adjustments of losses into income | — |  |  | 72.5 |  |  | 0.2 |  |  | 72.7 |
Tax (provision) benefit | — |  |  | (4.8) |  |  | 4.5 |  |  | (0.3) |
Net change | (1.1) |  |  | 14.1 |  |  | (13.4) |  |  | (0.4) |
Balance at December 31, 2023 | $ | (39.7) |  |  | $ | (18.4) |  |  | $ | (438.2) |  |  | $ | (496.3) |

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