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10-K Stock-Based Compensation - Summary of performance share awards (Details) - Performance Share Awards
 12 Months Ended
Dec. 31, 2022
$ / shares
shares
Number of Shares  
Nonvested at beginning of period (in shares) | shares 69,250,000
Granted (in shares) | shares 34,946,000
Additional performance shares earned (unearned) (in shares) | shares (2,874,000)
Vested (in shares) | shares 31,721,000
Nonvested at end of period (in shares) | shares 69,601,000
Weighted Average Grant-Date Fair Value  
Nonvested at beginning of period (in dollars per share) | $ / shares $ 34.42
Granted (in dollars per share) | $ / shares 31.99
Additional performance shares earned (unearned) (in dollars per share) | $ / shares 31.63
Vested (in dollars per share) | $ / shares 36.60
Nonvested at end of period (in dollars per share) | $ / shares $ 32.32