SEGMENT INFORMATION (Details 2) - USD ($)
$ in Millions |
3 Months Ended |
6 Months Ended |
52 Months Ended |
|
Jun. 30, 2025 |
Mar. 31, 2025 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Dec. 31, 2024 |
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
$ 1,758.3
|
|
$ 1,644.0
|
|
$ 3,402.5
|
$ 3,279.3
|
|
|
| Cost of goods sold |
1,620.2
|
|
1,406.2
|
|
3,115.7
|
2,834.2
|
|
|
| Gross Profit |
138.1
|
|
237.8
|
|
286.8
|
445.1
|
|
|
| Segment Reporting, Other Segment Item, Amount |
(96.6)
|
|
(94.6)
|
|
(197.6)
|
(196.5)
|
|
|
| Restructuring charges |
(7.4)
|
$ (4.0)
|
(6.8)
|
$ (8.3)
|
(11.4)
|
(15.1)
|
$ (237.8)
|
|
| Other Operating Income |
0.2
|
|
|
|
0.2
|
0.2
|
|
|
| Interest Expense, Operating and Nonoperating |
(46.8)
|
|
(46.6)
|
|
(95.3)
|
(91.2)
|
|
|
| Interest income |
1.2
|
|
0.9
|
|
2.4
|
1.7
|
|
|
| Non-operating pension income |
4.9
|
|
5.9
|
|
10.6
|
12.7
|
|
|
| Income (loss) before taxes |
(6.8)
|
|
96.6
|
|
(4.7)
|
156.9
|
|
|
| Depreciation and amortization |
129.9
|
|
129.0
|
|
262.1
|
258.7
|
|
|
| Segment, Expenditure, Addition to Long-Lived Assets |
31.0
|
|
59.4
|
|
92.4
|
100.8
|
|
|
| Assets |
7,667.9
|
|
7,660.6
|
|
7,667.9
|
7,660.6
|
7,667.9
|
$ 7,579.1
|
| Transferred over Time |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
94.4
|
|
37.8
|
|
152.9
|
57.6
|
|
|
| United States |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
1,201.9
|
|
1,189.5
|
|
2,339.1
|
2,378.4
|
|
|
| Europe |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
155.8
|
|
154.5
|
|
303.4
|
292.5
|
|
|
| Other foreign |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
400.6
|
|
300.0
|
|
760.0
|
608.4
|
|
|
| Chlor Alkali Products and Vinyls |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
979.5
|
|
920.3
|
|
1,904.0
|
1,804.9
|
|
|
| Cost of goods sold |
871.8
|
|
778.5
|
|
1,673.8
|
1,544.5
|
|
|
| Gross Profit |
107.7
|
|
141.8
|
|
230.2
|
260.4
|
|
|
| Segment Reporting, Other Segment Item, Amount |
(42.8)
|
|
(42.5)
|
|
(87.0)
|
(84.5)
|
|
|
| Restructuring charges |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
(127.0)
|
|
| Other Operating Income |
0.0
|
|
|
|
0.0
|
0.0
|
|
|
| Interest Expense, Operating and Nonoperating |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Interest income |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Non-operating pension income |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Income (loss) before taxes |
64.9
|
|
99.3
|
|
143.2
|
175.9
|
|
|
| Depreciation and amortization |
106.3
|
|
105.9
|
|
213.5
|
212.6
|
|
|
| Segment, Expenditure, Addition to Long-Lived Assets |
14.2
|
|
46.8
|
|
51.8
|
74.9
|
|
|
| Assets |
5,277.4
|
|
5,428.1
|
|
5,277.4
|
5,428.1
|
5,277.4
|
|
| Chlor Alkali Products and Vinyls | Caustic soda |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
435.1
|
|
376.8
|
|
821.9
|
732.5
|
|
|
| Chlor Alkali Products and Vinyls | Chlorine, chlorine-derivatives and other co-products |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
544.4
|
|
543.5
|
|
1,082.1
|
1,072.4
|
|
|
| Chlor Alkali Products and Vinyls | United States |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
664.2
|
|
671.5
|
|
1,311.1
|
1,307.1
|
|
|
| Chlor Alkali Products and Vinyls | Europe |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
42.0
|
|
45.0
|
|
75.2
|
80.8
|
|
|
| Chlor Alkali Products and Vinyls | Other foreign |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
273.3
|
|
203.8
|
|
517.7
|
417.0
|
|
|
| Epoxy |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
331.2
|
|
317.7
|
|
662.9
|
659.0
|
|
|
| Cost of goods sold |
340.0
|
|
307.6
|
|
685.1
|
646.7
|
|
|
| Gross Profit |
(8.8)
|
|
10.1
|
|
(22.2)
|
12.3
|
|
|
| Segment Reporting, Other Segment Item, Amount |
(14.9)
|
|
(13.1)
|
|
(29.9)
|
(27.1)
|
|
|
| Restructuring charges |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
(110.8)
|
|
| Other Operating Income |
0.0
|
|
|
|
0.0
|
0.0
|
|
|
| Interest Expense, Operating and Nonoperating |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Interest income |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Non-operating pension income |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Income (loss) before taxes |
(23.7)
|
|
(3.0)
|
|
(52.1)
|
(14.8)
|
|
|
| Depreciation and amortization |
13.1
|
|
13.4
|
|
25.9
|
26.9
|
|
|
| Segment, Expenditure, Addition to Long-Lived Assets |
2.0
|
|
5.5
|
|
12.8
|
10.4
|
|
|
| Assets |
949.3
|
|
992.4
|
|
949.3
|
992.4
|
949.3
|
|
| Epoxy | Aromatics and allylics |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
130.8
|
|
128.3
|
|
271.8
|
283.2
|
|
|
| Epoxy | Epoxy resins |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
200.4
|
|
189.4
|
|
391.1
|
375.8
|
|
|
| Epoxy | United States |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
140.8
|
|
166.8
|
|
284.9
|
338.1
|
|
|
| Epoxy | Europe |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
93.4
|
|
74.9
|
|
195.2
|
164.2
|
|
|
| Epoxy | Other foreign |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
97.0
|
|
76.0
|
|
182.8
|
156.7
|
|
|
| Winchester |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
447.6
|
|
406.0
|
|
835.6
|
815.4
|
|
|
| Cost of goods sold |
402.6
|
|
312.8
|
|
745.2
|
629.1
|
|
|
| Gross Profit |
45.0
|
|
93.2
|
|
90.4
|
186.3
|
|
|
| Segment Reporting, Other Segment Item, Amount |
(20.0)
|
|
(22.9)
|
|
(42.6)
|
(43.8)
|
|
|
| Restructuring charges |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Other Operating Income |
0.0
|
|
|
|
0.0
|
0.0
|
|
|
| Interest Expense, Operating and Nonoperating |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Interest income |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Non-operating pension income |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Income (loss) before taxes |
25.0
|
|
70.3
|
|
47.8
|
142.5
|
|
|
| Depreciation and amortization |
7.9
|
|
8.2
|
|
17.4
|
16.2
|
|
|
| Segment, Expenditure, Addition to Long-Lived Assets |
11.7
|
|
7.0
|
|
22.8
|
15.1
|
|
|
| Assets |
866.7
|
|
765.1
|
|
866.7
|
765.1
|
866.7
|
|
| Winchester | Commercial |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
169.7
|
|
222.0
|
|
325.6
|
464.8
|
|
|
| Winchester | Military and law enforcement |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
277.9
|
|
184.0
|
|
510.0
|
350.6
|
|
|
| Winchester | United States |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
396.9
|
|
351.2
|
|
743.1
|
733.2
|
|
|
| Winchester | Europe |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
20.4
|
|
34.6
|
|
33.0
|
47.5
|
|
|
| Winchester | Other foreign |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
30.3
|
|
20.2
|
|
59.5
|
34.7
|
|
|
| Corporate/ other |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Cost of goods sold |
5.8
|
|
7.3
|
|
11.6
|
13.9
|
|
|
| Gross Profit |
(5.8)
|
|
(7.3)
|
|
(11.6)
|
(13.9)
|
|
|
| Segment Reporting, Other Segment Item, Amount |
(18.9)
|
|
(16.1)
|
|
(38.1)
|
(41.1)
|
|
|
| Restructuring charges |
(7.4)
|
|
(6.8)
|
|
(11.4)
|
(15.1)
|
|
|
| Other Operating Income |
(0.2)
|
|
|
|
(0.2)
|
0.2
|
|
|
| Interest Expense, Operating and Nonoperating |
46.8
|
|
46.6
|
|
95.3
|
91.2
|
|
|
| Interest income |
1.2
|
|
0.9
|
|
2.4
|
1.7
|
|
|
| Non-operating pension income |
4.9
|
|
5.9
|
|
10.6
|
12.7
|
|
|
| Income (loss) before taxes |
(73.0)
|
|
(70.0)
|
|
(143.6)
|
(146.7)
|
|
|
| Depreciation and amortization |
2.6
|
|
1.5
|
|
5.3
|
3.0
|
|
|
| Segment, Expenditure, Addition to Long-Lived Assets |
3.1
|
|
0.1
|
|
5.0
|
0.4
|
|
|
| Assets |
574.5
|
|
475.0
|
|
574.5
|
475.0
|
$ 574.5
|
|
| Corporate/ other | United States |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Corporate/ other | Europe |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
0.0
|
|
0.0
|
|
0.0
|
0.0
|
|
|
| Corporate/ other | Other foreign |
|
|
|
|
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
|
|
|
|
| Sales |
$ 0.0
|
|
$ 0.0
|
|
$ 0.0
|
$ 0.0
|
|
|