Benefit Plans - Components of Net Periodic Pension Cost/(Benefit) (Details) - Pension Plans - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 0	$ 2	$ 2
Interest cost	6	15	32	45
Expected return on plan assets	(12)	(23)	(45)	(69)
Amortization of net loss and prior service cost	0	1	2	1
Settlement losses	0	3	292	9
Net periodic pension cost/(benefit)	(5)	(4)	283	(12)
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	15	16	46	46
Interest cost	69	72	204	214
Expected return on plan assets	(106)	(108)	(317)	(324)
Amortization of net loss and prior service cost	17	16	52	48
Settlement losses	54	0	54	0
Net periodic pension cost/(benefit)	$ 49	$ (4)	$ 39	$ (16)