Employee Retirement Plans - Schedule of Net Periodic Benefit Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plan | Domestic pension benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 79	$ 80	$ 105
Interest cost	165	168	98
Expected return on plan assets	(179)	(176)	(210)
Amortization of prior service cost (credit)	6	6	6
Amortization of actuarial gain
Recognition of actuarial (gain) loss	(31)	(16)	29
Total net periodic benefit expense (income)	40	62	28
Settlement charge
Curtailment charge		3
Special termination benefit charge	6	15	2
Total expense (income)	46	80	30
Curtailment effects	(1)	(4)
Settlements
Current year actuarial (gain) loss	(225)	(16)	16
Amortization of actuarial (loss) gain
Recognition of actuarial gain (loss)	31	16	(29)
Current year prior service cost (credit)			28
Amortization of prior service (cost) credit	(6)	(6)	(6)
Total recognized in other comprehensive (loss) income	(201)	(10)	9
Pension Plan | International pension benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	20	18	22
Interest cost	20	20	11
Expected return on plan assets	(16)	(13)	(9)
Amortization of prior service cost (credit)			(1)
Amortization of actuarial gain
Recognition of actuarial (gain) loss	6	1	8
Total net periodic benefit expense (income)	30	26	31
Settlement charge			2
Curtailment charge
Special termination benefit charge
Total expense (income)	30	26	33
Curtailment effects
Settlements			11
Current year actuarial (gain) loss	5	14	(27)
Amortization of actuarial (loss) gain	(9)
Recognition of actuarial gain (loss)	2	1	20
Current year prior service cost (credit)
Amortization of prior service (cost) credit			1
Total recognized in other comprehensive (loss) income	(2)	15	5
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	5	9
Interest cost	19	23	15
Expected return on plan assets
Amortization of prior service cost (credit)	(7)	(5)	(5)
Amortization of actuarial gain	(24)	(22)	(5)
Recognition of actuarial (gain) loss
Total net periodic benefit expense (income)	(9)	1	14
Settlement charge
Curtailment charge
Special termination benefit charge		1
Total expense (income)	(9)	2	14
Curtailment effects
Settlements
Current year actuarial (gain) loss	(32)	(8)	(209)
Amortization of actuarial (loss) gain	24	22	5
Recognition of actuarial gain (loss)
Current year prior service cost (credit)	(26)
Amortization of prior service (cost) credit	7	5	5
Total recognized in other comprehensive (loss) income	$ (27)	$ 19	$ (199)