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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, 2019 382,136 440 386,099 (3,963)
Issued:        
Employee stock purchase plan 106 0 106 0
Long-term incentive plan 379 0 379 0
401(k) and profit sharing 296 0 296 0
Ending balance at Jun. 30, 2020 382,917 440 386,880 (3,963)
Beginning balance at Mar. 31, 2020 382,694 440 386,657 (3,963)
Issued:        
Employee stock purchase plan 60 0 60 0
Long-term incentive plan 32 0 32 0
401(k) and profit sharing 131 0 131 0
Ending balance at Jun. 30, 2020 382,917 440 386,880 (3,963)
Beginning balance at Dec. 31, 2020 391,760 440 395,723 (3,963)
Issued:        
Equity Units 0 863 0 0
Employee stock purchase plan 107 0 107 0
Long-term incentive plan 263 0 263 0
401(k) and profit sharing 199 0 199 0
Ending balance at Jun. 30, 2021 392,329 1,303 396,292 (3,963)
Beginning balance at Mar. 31, 2021 392,130 440 396,093 (3,963)
Issued:        
Equity Units 0 863 0 0
Employee stock purchase plan 52 0 52 0
Long-term incentive plan 51 0 51 0
401(k) and profit sharing 96 0 96 0
Ending balance at Jun. 30, 2021 392,329 1,303 396,292 (3,963)