Defined Severance Benefits - Schedule of Components of Net Periodic Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Retirement Benefits [Abstract]
Current service costs	$ 141	$ 143	$ 121
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	$ 14	9	3
Amortization of:
Prior service cost	3	3	0
Net actuarial loss	1	6	4
Net periodic benefit cost	$ 159	$ 161	$ 128