Defined Severance Benefits - Schedule of Components of Net Periodic Benefit Costs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Retirement Benefits [Abstract]
Current service costs	$ 39	$ 34	$ 79	$ 68
Interest cost	4	3	8	7
Amortization of:
Prior service credit	1	0	1	1
Net actuarial loss	1	0	2	0
Net periodic benefit cost	$ 45	$ 37	$ 90	$ 76