Employee Benefit Plans - Schedule of Net Benefit Expense Recorded on the Income Statement (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Components of expense/ (income) related to net benefit expense [Abstract]
Interest Cost	$ 109	$ 106
Amortization of Net Loss	23	18
Total Income Included in Other Income - Net	(33)	(50)	$ (29)
Pension Benefits
Components of expense/ (income) related to net benefit expense [Abstract]
Service Cost Included in Labor and Fringe	20	24	24
Interest Cost	109	106	111
Expected Return on Plan Assets	(160)	(168)	(164)
Amortization of Net Loss	23	18	29
Total Income Included in Other Income - Net	(28)	(44)	(24)
Net Periodic Benefit Credit	$ (8)	$ (20)	$ 0