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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Summary of Restricted Stock, Restricted Stock Unit and Stock Option Activity During the first quarter of 2024, the following units were granted based upon the establishment of performance targets:
Performance-based Award Units Granted in 2024
Weighted
Average
Grant Date
Fair Value
Per Share
2024 Performance Award Plan
127,332$41.46
2023 Performance Award Plan73,271$42.09
2022 Performance Award Plan113,856$42.09
Disclosure of Compensation Arrangements by Share-based Payment Award
Location in Statement of OperationsDecember 31,
Compensation Expense (in millions)202420232022
SGI awardsG&A$30 $34 $54 
Performance-based awards for non-Section 16 executivesG&A14 21 14 
Liabilities (in millions)Location on Balance SheetDecember 31, 2024December 31, 2023
SGI awardsAccrued salaries, wages and benefits and
Other noncurrent liabilities
$51 $58 
Performance-based awards for non-Section 16 executives
Accrued salaries, wages and benefits and
Other noncurrent liabilities
30 29