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Stock-based Compensation (Tables)
6 Months Ended
Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock Options Roll Forward
A summary of stock option award activity for the six months ended June 30, 2023 is presented below.
Stock OptionsAwards
(in millions)
Weighted
Average
Exercise
Price
Aggregate
Intrinsic
Value
 (in millions)
Weighted
Average
Remaining
Contractual
Life (years)
Outstanding at January 1, 20231.1 $26.56 
Granted— $— 
Exercised(0.4)$24.02 
Forfeited / Expired(0.1)$32.50 
Outstanding at June 30, 20230.6 $27.86 
Vested and expected to vest at June 30, 20230.6 $27.86 $2.8 3.64
Exercisable at June 30, 20230.6 $27.86 $2.8 3.64
Schedule of Restricted Stock Units and Restricted Stock Awards Roll Forward
Restricted Stock UnitsUnits
(in millions)
Weighted Average
Fair Value
Outstanding at January 1, 20231.6 $27.38 
Granted0.6 $29.83 
Vested(0.6)$27.90 
Forfeited(0.1)$28.75 
Outstanding at June 30, 20231.5 $28.12 
Schedule of Performance Stock Roll Forward
Performance Share UnitsUnits
(in millions)
Weighted Average
Fair Value
Outstanding at January 1, 20230.6 $30.44 
Granted0.4 $36.38 
Vested— $— 
Forfeited(0.2)$31.31 
Outstanding at June 30, 20230.8 $33.11