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Incentive Compensation Plans Schedule of Nonvested Stock Activity (Tables)
 12 Months Ended
Dec. 31, 2024
Summary of Stock Options Assumptions [Abstract]  
Schedule of Nonvested Share Activity [Table Text Block]
A summary of the activity of our non-vested stock-settled awards, cash-settled awards and performance-based awards during 2024 is presented below (performance-based awards are shown at 100% of the shares originally granted).
 Stock-Settled AwardsCash-Settled AwardsPerformance-Based Awards
 AwardsWeighted-
Average
Grant-Date
Fair Value
(per award)		AwardsWeighted-
Average
Grant-Date
Fair Value
(per award)		AwardsWeighted-
Average
Grant-Date
Fair Value
(per award)
Non-vested as of January 1, 20242.9 $34.20 0.0 $36.05 2.3 $32.09 
Reinstated
0.0 36.31 0.0 0.0 0.1 32.96 
Granted1.4 31.39 0.1 31.40 2.8 27.53 
Vested(0.6)27.82 0.0 0.0 (0.3)23.38 
Forfeited(0.4)35.42 0.0 32.21 (0.5)31.39 
Non-vested as of December 31, 20243.3 $34.08 0.1 $32.64 4.4 $29.86 
Total unrecognized compensation expense remaining$45.8 $1.9 $44.9 
Weighted-average years expected to be recognized over1.31.71.9