Employee Benefits (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Retirement Benefits [Abstract]
Service cost	$ 53	$ 54	$ 106	$ 109
Interest cost	102	94	205	188
Expected return on plan assets	(146)	(146)	(293)	(292)
Prior service cost (credit) amortization	(1)	(1)	(2)	(2)
Actuarial loss (gain) amortization	1	3	2	5
Net periodic benefit cost	$ 9	$ 4	$ 18	$ 8