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Retirement Plans
 12 Months Ended
Dec. 31, 2024
Retirement Benefits [Abstract]  
Retirement Plans Retirement Plans
DC Plans
Domestic and international DC plans are available to eligible salaried and craft employees. Company contributions to DC plans are based on an employee's eligible compensation and participation rate. We recognized expense of $145 million, $143 million and $129 million in 2024, 2023 and 2022, respectively.
DB Plans
We have no material DB plans. During 2022, we recognized a $42 million gain on pension settlement upon the completion of compensation and other items associated with our largest DB plan, which provided retirement benefits to certain employees in the Netherlands, which was terminated in December 2021.
Multiemployer Pension Plans
We participate in multiemployer pension plans for unionized construction and maintenance craft employees. Company contributions are based on the hours worked by employees covered under various collective bargaining agreements and totaled $56 million, $75 million and $51 million during 2024, 2023 and 2022, respectively. Upon withdrawal from a multiemployer plan, we may have an obligation to make additional contributions for our share of any unfunded benefit obligation, but only if we do not meet the requirements of any applicable exemptions. The preceding information does not include amounts related to benefit plans applicable to employees associated with certain contracts with the U.S. Department of Energy because we are not responsible for the current or future funding of these plans.