Retirement Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Defined Contribution Plan, Cost	$ 177	$ 155	$ 152
Pension Plan
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Defined Contribution Plan, Cost	699	546	478
Assumptions used to determine net benefit cost [Abstract]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), (Gain) Loss Due to Settlement, Curtailment, and Other	240	$ 360	544
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 800
Other Postretirement Benefit Plan, Defined Benefit
Weighted average assumptions [Abstract]
Discount Rate	5.46%	5.10%
Average rate of increase in compensation	3.80%	3.98%
Assumptions used to determine net benefit cost [Abstract]
Expected long-term rate of return on assets	0.00%	0.00%
Average rate of increase in compensation	3.98%	3.65%
Defined Benefit Plan, Other Cost (Credit)	$ 0	$ 1	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	148	542	(1,130)
Service cost	24	21	42
Interest cost	226	231	146
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	0	0	0
Amortization of prior service costs/(credits)	10	3	(3)
Net remeasurement (gain)/loss	(112)	286	(1,314)
Settlements and curtailments	$ 0	$ 0	(1)
Other Postretirement Benefit Plan Service Cost [Member]
Assumptions used to determine net benefit cost [Abstract]
Discount Rate	5.28%	5.65%
Other Postretirement Benefit Plan Interest Cost [Member]
Assumptions used to determine net benefit cost [Abstract]
Discount Rate	5.02%	5.36%
Non-U.S. Plans | Pension Plan
Weighted average assumptions [Abstract]
Discount Rate	4.51%	3.98%
Average rate of increase in compensation	3.52%	3.54%
Assumptions used to determine net benefit cost [Abstract]
Expected long-term rate of return on assets	4.53%	4.13%
Average rate of increase in compensation	3.54%	3.42%
Defined Benefit Plan, Other Cost (Credit)	$ 111	$ 261	63
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	(738)	1,544	(439)
Service cost	248	245	416
Interest cost	938	965	504
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(1,019)	(890)	(1,006)
Amortization of prior service costs/(credits)	25	22	22
Net remeasurement (gain)/loss	(1,019)	932	(436)
Settlements and curtailments	$ (22)	$ 9	(2)
Non-U.S. Plans | Foreign Pension Plan Service Cost [Member]
Assumptions used to determine net benefit cost [Abstract]
Discount Rate	3.92%	4.29%
Non-U.S. Plans | Foreign Pension Plan Interest Cost [Member]
Assumptions used to determine net benefit cost [Abstract]
Discount Rate	4.01%	4.45%
U.S. Plans | Pension Plan
Weighted average assumptions [Abstract]
Discount Rate	5.65%	5.17%
Average rate of increase in compensation	3.80%	4.05%
Assumptions used to determine net benefit cost [Abstract]
Expected long-term rate of return on assets	5.93%	6.25%
Average rate of increase in compensation	4.05%	3.70%
Defined Benefit Plan, Other Cost (Credit)	$ 22	$ 20	46
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement		(71)	(438)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	739	966	1,191
Service cost	288	292	500
Interest cost	1,581	1,641	1,054
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(1,817)	(1,897)	(2,569)
Amortization of prior service costs/(credits)	92	0	2
Net remeasurement (gain)/loss	444	841	1,720
Settlements and curtailments	$ 129	$ 69	$ 438
U.S. Plans | United States Pension Plan US Entity Service Cost [Member]
Assumptions used to determine net benefit cost [Abstract]
Discount Rate	5.25%	5.60%
U.S. Plans | United States Pension Plan US Entity Interest Cost [Member]
Assumptions used to determine net benefit cost [Abstract]
Discount Rate	5.02%	5.39%