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Stock-based Compensation
 3 Months Ended
Mar. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Stock-based Compensation STOCK-BASED COMPENSATION
During each of the three months ended March 31, 2024 and 2023, we recognized $6 million in stock-based compensation expense, which was allocated between cost 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 $1 million for each of the three months ended March 31, 2024 and 2023.
2024 Activity
A summary of stock option award activity as of and for the three months ended March 31, 2024 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, 20240.5 $28.33 
Granted— $— 
Exercised(0.1)$27.00 
Forfeited / Expired (1)
— $32.50 
Outstanding at March 31, 2024
0.4 $28.56 
Vested and expected to vest at March 31, 2024
0.4 $28.56 $2 3.64
Exercisable at March 31, 2024
0.4 $28.56 $2 3.64
(1)    Activity during the three months ended March 31, 2024 rounds to zero.
Cash received by the Company upon exercise of options for the three months ended March 31, 2024 was $3 million. No excess tax benefits or shortfall expenses were recorded related to these exercises.
At March 31, 2024, there was no unrecognized expense relating to unvested stock options.
Restricted Stock UnitsUnits
(in millions)		Weighted Average
Fair Value
Outstanding at January 1, 20241.3 $28.71 
Granted0.5 $32.48 
Vested(0.4)$29.06 
Forfeited(0.1)$29.45 
Outstanding at March 31, 20241.3 $30.06 
Tax benefits on the vesting of restricted stock units during the three months ended March 31, 2024 were immaterial.
At March 31, 2024, there was $26 million of unamortized expense relating to unvested restricted stock units that is expected to be amortized over a weighted average period of 1.7 years.
Performance Share UnitsUnits
(in millions)		Weighted Average
Fair Value
Outstanding at January 1, 20240.8 $33.20 
Granted0.3 $38.52 
Vested (1)
— $29.53 
Forfeited(0.2)$30.50 
Outstanding at March 31, 20240.9 $35.79 
(1)    Activity during the three months ended March 31, 2024 rounds to zero.
Our performance share units allow for participants to vest in zero to 200% of the targeted number of shares granted. At March 31, 2024, there was $24 million of unamortized expense relating to unvested performance share units that is expected to be amortized over a weighted average period of 2.4 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.