Defined Benefits (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Net Periodic Defined Benefit Costs Allocated to Subsidiary by Sponsor (Numeric) [Abstract]
Defined benefit plans - funding	$ 5	$ 5
Pension Plan [Member] | U.S.
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	8	9
Interest cost	45	46
Expected return on plan assets	(72)	(75)
Amortization of: [Abstract]
Prior service cost	0	1
Actuarial loss	5	2
Net periodic defined benefit costs (credits)	(14)	(17)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	2	1
Interest cost	7	7
Expected return on plan assets	(8)	(7)
Amortization of: [Abstract]
Actuarial loss	(1)	(1)
Net periodic defined benefit costs (credits)	$ 0	$ 0