Employee Benefits - Schedule of Net Periodic Benefit (Income) Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected return on plan assets	$ (272)	$ (287)
Combined Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	24	25	$ 44
Interest cost	251	270	194
Expected return on plan assets	(272)	(287)	(385)
Realized to gain on sale of businesses	0	0	546
Special termination benefits charge	0	2	0
Recognition of prior service credit	(7)	(7)	(10)
Recognition of actuarial loss	108	104	122
Net periodic pension expense	104	107	511
Post-Retirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	4	5	10
Interest cost	94	103	72
Realized to gain on sale of businesses	0	0	(32)
Special termination benefits charge	2	0	0
Recognition of prior service credit	(8)	(8)	8
Recognition of actuarial loss	(17)	(20)	(4)
Net periodic pension expense	$ 75	$ 80	$ 54