RESTRUCTURING CHARGES (Details)
$ in Millions |
1 Months Ended |
12 Months Ended |
45 Months Ended |
61 Months Ended |
110 Months Ended |
|
|
|
|
Dec. 31, 2019
USD ($)
|
Dec. 31, 2019
USD ($)
|
Dec. 31, 2018
USD ($)
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2019
USD ($)
|
Dec. 31, 2019
USD ($)
|
Dec. 31, 2019
USD ($)
|
Dec. 11, 2019
T
|
Dec. 31, 2016
USD ($)
|
Mar. 21, 2016
T
|
| Restructuring Cost and Reserve [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Restructuring charges |
|
$ 76.5
|
$ 21.9
|
$ 37.6
|
|
|
$ 285.6
|
|
|
|
| Restructuring and Related Cost, Incurred Cost |
|
|
|
|
|
|
134.9
|
|
|
|
| Restructuring Reserve, Settled without Cash |
|
|
|
|
|
|
147.6
|
|
|
|
| Accrued Restructuring Costs |
$ 3.1
|
3.1
|
8.2
|
5.1
|
$ 3.1
|
$ 3.1
|
3.1
|
|
$ 12.7
|
|
| Freeport | Chlor Alkali Products and Vinyls |
|
|
|
|
|
|
|
|
|
|
| Restructuring Cost and Reserve [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Freeport Chlor Alkali Capacity Reduction | T |
|
|
|
|
|
|
|
230,000
|
|
|
| Restructuring charges |
58.9
|
58.9
|
|
|
|
|
|
|
|
|
| Additional restructuring and related expected cost |
50.0
|
50.0
|
|
|
50.0
|
50.0
|
50.0
|
|
|
|
| Geelong | Winchester |
|
|
|
|
|
|
|
|
|
|
| Restructuring Cost and Reserve [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Restructuring charges |
|
0.4
|
4.1
|
|
|
|
|
|
|
|
| Other Winchester | Winchester |
|
|
|
|
|
|
|
|
|
|
| Restructuring Cost and Reserve [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Restructuring charges |
|
1.4
|
|
|
|
|
|
|
|
|
| Capacity Reductions | Chlor Alkali Products and Vinyls |
|
|
|
|
|
|
|
|
|
|
| Restructuring Cost and Reserve [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Restructuring charges |
|
15.8
|
15.7
|
32.6
|
175.5
|
|
|
|
|
|
| Additional restructuring and related expected cost |
$ 5.0
|
$ 5.0
|
|
|
$ 5.0
|
5.0
|
5.0
|
|
|
|
| Total Product Segment Production Capacity Decrease | T |
|
|
|
|
|
|
|
|
|
433,000
|
| Henderson Product Segment Production Capacity Decrease | T |
|
|
|
|
|
|
|
|
|
153,000
|
| Niagara Product Segment Production Capacity | T |
|
|
|
|
|
|
|
|
|
300,000
|
| Reduced Niagara Segment Production Capacity | T |
|
|
|
|
|
|
|
|
|
240,000
|
| Freeport Product Segment Production Capacity Decrease | T |
|
|
|
|
|
|
|
|
|
220,000
|
| Becancour | Chlor Alkali Products and Vinyls |
|
|
|
|
|
|
|
|
|
|
| Restructuring Cost and Reserve [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Restructuring charges |
|
|
$ 2.1
|
3.3
|
|
$ 18.2
|
|
|
|
|
| Oxford | Winchester |
|
|
|
|
|
|
|
|
|
|
| Restructuring Cost and Reserve [Line Items] |
|
|
|
|
|
|
|
|
|
|
| Restructuring charges |
|
|
|
$ 1.7
|
|
|
$ 27.1
|
|
|
|