Benefit Plans (Components of Net Periodic Cost (Benefit)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Interest cost on projected benefit obligation	$ 36	$ 87	$ 98
Expected return on plan assets	(54)	(116)	(119)
Amortization of net actuarial loss (gain)	7	29	33
Pension settlement transaction loss	0	371	0
Total net periodic pension cost (benefit)	$ (11)	$ 371	$ 12
Defined benefit plan net periodic benefit cost credit excluding service cost statement of income or comprehensive income extensible list		Other operating expenses, Insurance claims and policyholders’ benefits (re-measurement loss of $104, $125 and $88)
Defined benefit plan net periodic benefit cost credit expected return loss statement of income or comprehensive income extensible list	Other operating expenses, Insurance claims and policyholders’ benefits (re-measurement loss of $104, $125 and $88)	Other operating expenses, Insurance claims and policyholders’ benefits (re-measurement loss of $104, $125 and $88)	Other operating expenses, Insurance claims and policyholders’ benefits (re-measurement loss of $104, $125 and $88)
Defined benefit plan net periodic benefit cost credit amortization of gain loss statement of income or comprehensive income extensible list	Other operating expenses, Insurance claims and policyholders’ benefits (re-measurement loss of $104, $125 and $88)	Other operating expenses, Insurance claims and policyholders’ benefits (re-measurement loss of $104, $125 and $88)	Other operating expenses, Insurance claims and policyholders’ benefits (re-measurement loss of $104, $125 and $88)
Defined benefit plan net periodic benefit cost credit settlement gain loss statement of income or comprehensive income extensible list not disclosed flag	Other operating expenses, Insurance claims and policyholders’ benefits (re-measurement loss of $104, $125 and $88)	Other operating expenses, Insurance claims and policyholders’ benefits (re-measurement loss of $104, $125 and $88)	Other operating expenses, Insurance claims and policyholders’ benefits (re-measurement loss of $104, $125 and $88)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost on projected benefit obligation	$ 36	$ 87