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SEGMENT INFORMATION (Tables)
 12 Months Ended
Dec. 31, 2021
Segment Reporting [Abstract]  
Segment Information
Years ended December 31,
202120202019
Sales:($ in millions)
Chlor Alkali Products and Vinyls$4,140.8 $2,959.9 $3,420.1 
Epoxy3,186.0 1,870.5 2,024.4 
Winchester1,583.8 927.6 665.5 
Total sales$8,910.6 $5,758.0 $6,110.0 
Income (loss) before taxes:   
Chlor Alkali Products and Vinyls$997.8 $3.5 $336.7 
Epoxy616.5 40.8 53.9 
Winchester412.1 92.3 40.1 
Corporate/Other:
Environmental expense(14.0)(20.9)(20.5)
Other corporate and unallocated costs(135.1)(154.3)(156.3)
Restructuring charges(27.9)(9.0)(76.5)
Goodwill impairment— (699.8)— 
Other operating income1.4 0.7 0.4 
Interest expense(348.0)(292.7)(243.2)
Interest income0.2 0.5 1.0 
Non-operating pension income35.7 18.9 16.3 
Other income— — 11.2 
Income (loss) before taxes$1,538.7 $(1,020.0)$(36.9)
Depreciation and amortization expense:   
Chlor Alkali Products and Vinyls$466.4 $451.4 $470.4 
Epoxy86.1 90.7 100.1 
Winchester23.3 20.1 20.1 
Corporate/Other6.7 6.2 6.8 
Total depreciation and amortization expense$582.5 $568.4 $597.4 
Capital spending:   
Chlor Alkali Products and Vinyls$130.2 $180.4 $240.3 
Epoxy31.0 33.7 30.0 
Winchester28.5 24.5 12.1 
Corporate/Other10.9 60.3 103.2 
Total capital spending$200.6 $298.9 $385.6 
Segment assets include only those assets which are directly identifiable to an operating segment.  Assets of the corporate/other segment include primarily such items as cash and cash equivalents, deferred taxes and other assets.
December 31,
20212020
Assets:($ in millions)
Chlor Alkali Products and Vinyls$6,184.9 $6,165.5 
Epoxy1,307.3 1,153.2 
Winchester540.6 468.2 
Corporate/Other484.9 484.0 
Total assets$8,517.7 $8,270.9 
Segment geographic data
Property, plant and equipment is attributed to geographic areas based on asset location and sales are attributed to geographic areas based on customer location.
December 31,
20212020
Property, plant and equipment:($ in millions)
United States$2,639.6 $2,860.1 
Foreign274.0 310.9 
Total property, plant and equipment$2,913.6 $3,171.0 
Disaggregation of Revenue
Years ended December 31,
202120202019
Sales by geography:($ in millions)
     Chlor Alkali Products and Vinyls
United States$2,839.1 $2,092.5 $2,332.1 
Europe203.5 106.7 134.5 
Other foreign1,098.2 760.7 953.5 
               Total Chlor Alkali Products and Vinyls4,140.8 2,959.9 3,420.1 
     Epoxy
United States926.7 578.1 664.0 
Europe1,457.9 684.9 844.2 
Other foreign801.4 607.5 516.2 
               Total Epoxy3,186.0 1,870.5 2,024.4 
     Winchester
United States1,502.2 865.9 603.4 
Europe19.4 9.3 11.7 
Other foreign62.2 52.4 50.4 
               Total Winchester1,583.8 927.6 665.5 
     Total
United States5,268.0 3,536.5 3,599.5 
Europe1,680.8 800.9 990.4 
Other foreign1,961.8 1,420.6 1,520.1 
               Total sales$8,910.6 $5,758.0 $6,110.0 
 Years ended December 31,
 202120202019
Sales by product line:($ in millions)
     Chlor Alkali Products and Vinyls
          Caustic soda$1,869.3 $1,408.3 $1,737.4 
          Chlorine, chlorine derivatives and other products2,271.5 1,551.6 1,682.7 
               Total Chlor Alkali Products and Vinyls4,140.8 2,959.9 3,420.1 
     Epoxy
          Aromatics and allylics1,450.5 821.0 945.3 
          Epoxy resins1,735.5 1,049.5 1,079.1 
               Total Epoxy3,186.0 1,870.5 2,024.4 
     Winchester
          Commercial1,104.1 640.5 441.3 
          Military and law enforcement479.7 287.1 224.2 
               Total Winchester1,583.8 927.6 665.5 
          Total sales$8,910.6 $5,758.0 $6,110.0