Benefit Plans (Schedule of Amounts Recognized in Other Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Retirement Benefits [Abstract]
Amounts arising during the period	$ 22	$ 22	$ 50
Postretirement termination loss	3	0	0
Pension settlement transaction loss	0	371	0
Reclassification adjustment relating to prior service credit	(2)	0	0
Reclassification adjustment relating to actuarial loss	8	30	34
Total increase (decrease) in Other comprehensive income	$ 31	$ 423	$ 84

Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Termiantions, before Tax

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Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Settlements, before Tax

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Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan.

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Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.

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Amount, before tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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