Defined Severance Benefits - Schedule of Components of Net Periodic Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Retirement Benefits [Abstract]
Current service costs	$ 166	$ 141	$ 143
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)
Interest cost	$ 16	14	9
Amortization of:
Prior service cost	2	3	3
Net actuarial loss	3	1	6
Net periodic benefit cost	$ 187	$ 159	$ 161