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Statements of Consolidated Equity (Shares) - shares
shares in Thousands
Total
Preferred Stock
Common Stock
Treasury Stock
Beginning balance at Dec. 31, 2018 372,363 420 376,326 (3,963)
Issued:        
Preferred stock 0 20 0 0
Employee stock purchase plan 50 0 50 0
Long-term incentive plan 426 0 426 0
401(k) and profit sharing 164   164 0
Ending balance at Mar. 31, 2019 373,003 440 376,966 (3,963)
Beginning balance at Dec. 31, 2019 382,136 440 386,099 (3,963)
Issued:        
Employee stock purchase plan 46 0 46 0
Long-term incentive plan 347 0 347 0
401(k) and profit sharing 165 0 165 0
Ending balance at Mar. 31, 2020 382,694 440 386,657 (3,963)