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Stock-based Compensation
 6 Months Ended
Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]  
Stock-based Compensation STOCK-BASED COMPENSATIONDuring the three and six months ended June 30, 2023 and 2022, we recognized $7.3 million, $13.6 million, $3.7 million and $9.0 million, respectively, in stock-based compensation expense, which was allocated between costs of goods sold and selling, general and administrative expenses in the condensed consolidated statements of operations. We recognized tax benefits on stock-based compensation of $0.7 million, $1.6 million, $0.4 million and $1.0 million for the three and six months ended June 30, 2023 and 2022, respectively.
2023 Activity
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
Cash received by the Company upon exercise of options for the six months ended June 30, 2023 was $11.4 million.
Tax benefits on these exercises were $0.1 million.
At June 30, 2023, there was no unrecognized expense relating to unvested stock options.
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 
Tax benefits on the vesting of restricted stock units during the six months ended June 30, 2023 were $0.1 million.
At June 30, 2023, there was $23.1 million of unamortized expense relating to unvested restricted stock units that is expected to be amortized over a weighted average period of 1.5 years.
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 
Our performance share units allow for participants to vest in zero to 200% of the targeted number of shares granted. At June 30, 2023, there was $15.9 million of unamortized expense relating to unvested performance share units that is expected to be amortized over a weighted average period of 2.6 years. The forfeitures include portions of performance share unit grants that were determined to not have vested during the period as a result of not meeting established financial performance thresholds.