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Annual report pursuant to Section 13 and 15(d)

STOCK COMPENSATION PLANS - Performance Shares (Details)

v3.20.4
STOCK COMPENSATION PLANS - Performance Shares (Details) - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Performance Shares [Member] Ìý Ìý Ìý Ìý
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Ìý Ìý Ìý Ìý
Outstanding at beginning of year 1,935,878 1,424,723 1,848,312 Ìý
Outstanding shares, weighted average grant date fair value $ 10.34 $ 15.58 $ 14.46 $ 13.42
Granted shares 2,510,853 572,104 675,599 Ìý
Granted Shares Weighted Average Fair Value $ 5.49 $ 18.31 $ 11.93 Ìý
Distributed (1,938,786) 0 (489,953) Ìý
Distributed shares, weighted average grant date fair value $ 12.23 $ 0 $ 10.89 Ìý
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Conditions Adjustment in Period 549,154 0 (560,720) Ìý
Performance adjustment, weighted average grant date fair value $ 15.63 $ 0 $ 10.69 Ìý
Forfeited/canceled shares (604,873) (60,949) (48,515) Ìý
Forfeited/canceled shares, weighted average grant date fair value $ 5.70 $ 15.12 $ 19.33 Ìý
Outstanding at end of year 2,452,226 1,935,878 1,424,723 Ìý
Performance/vesting period 3 years Ìý Ìý Ìý
Performance Shares [Member] | Minimum [Member] Ìý Ìý Ìý Ìý
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Ìý Ìý Ìý Ìý
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 0.00% Ìý Ìý Ìý
Performance Shares [Member] | Maximum [Member] Ìý Ìý Ìý Ìý
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Ìý Ìý Ìý Ìý
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 200.00% Ìý Ìý Ìý
Performance Shares [Member] | AK Steel [Member] Ìý Ìý Ìý Ìý
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Ìý Ìý Ìý Ìý
Granted shares 500,000 Ìý Ìý Ìý
Distributed shares, weighted average grant date fair value $ 4.59 Ìý Ìý Ìý
Outstanding at end of year 100,000 Ìý Ìý Ìý
Long-term Performance Plan | AK Steel [Member] Ìý Ìý Ìý Ìý
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Ìý Ìý Ìý Ìý
Granted shares 1,000,000.0 Ìý Ìý Ìý
Outstanding at end of year 300,000 Ìý Ìý Ìý