Employment Benefit Plans Change in Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Net pension assets included in other current liabilities	$ 9	$ 12
Net pension assets included in other assets	1,500	1,500
Pension Benefits
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of period	3,068	2,611
Actual return (loss) on plan assets	142	585
Employer contributions	15	11
Benefits paid	(139)	(138)
Settlements	(6)	(1)
Fair value of plan assets at measurement date	3,080	3,068
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Funded status (plan assets less projected benefit obligations)	$ 1,479	$ 1,452