Benefit Plans - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2025	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Remeasurement (gains) losses	$ (108)	$ 26	$ (30)	$ 15
Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Remeasurement (gains) losses	$ (107)	$ 19	$ (30)	$ 11
Discount rate	5.44%		5.44%		5.51%	5.71%
Discretionary contribution to the qualified pension plan			$ 35