Pension And Other Postretirement Benefits (Long-Term Rates Of Pension And Other Postretirement Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Total recorded in other comprehensive income	$ (784)	$ 504	$ (4,799)
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate (percent)	5.30%	5.60%	3.10%
Long-term rate of return on funded assets (percent)	6.00%	4.70%	3.80%
Long-term rate of compensation increase (percent)	4.50%	4.50%	4.50%
Service cost	$ 81	$ 78	$ 138
Interest cost	250	276	216
Expected return on plan assets	(20)	(14)	(14)
Amortization of actuarial loss/(gain)	(103)	(122)	6
Amortization of prior service cost	(63)	(42)	(42)
Net periodic benefit cost	145	176	304
Net actuarial loss/(gain)	(81)	154	(1,910)
Amortization of actuarial (loss)/gain	103	122	(6)
Prior service cost/(credit)	(8)	(312)	0
Amortization of prior service (cost)/credit	63	42	42
Foreign exchange rate changes	9	(2)	(7)
Total recorded in other comprehensive income	86	4	(1,881)
Total recorded in net periodic benefit cost and other comprehensive income, before tax	231	180	(1,577)
United States
Defined Benefit Plan Disclosure [Line Items]
Total recorded in other comprehensive income	$ (82)	$ (141)	$ (939)
United States | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate (percent)	5.30%	5.60%	3.00%
Long-term rate of return on funded assets (percent)	6.80%	5.20%	4.60%
Long-term rate of compensation increase (percent)	4.50%	4.50%	4.50%
Service cost	$ 499	$ 466	$ 712
Interest cost	671	664	518
Expected return on plan assets	(724)	(532)	(560)
Amortization of actuarial loss/(gain)	83	85	156
Amortization of prior service cost	(31)	(29)	(29)
Net pension enhancement and curtailment/settlement cost	27	29	205
Net periodic benefit cost	525	683	1,002
Net actuarial loss/(gain)	(3)	(39)	(607)
Amortization of actuarial (loss)/gain	(110)	(114)	(361)
Prior service cost/(credit)	0	(17)	0
Amortization of prior service (cost)/credit	31	29	29
Total recorded in other comprehensive income	(82)	(141)	(939)
Total recorded in net periodic benefit cost and other comprehensive income, before tax	443	542	63
Pension Benefits - Non-U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Total recorded in other comprehensive income	$ (788)	$ 641	$ (1,979)
Pension Benefits - Non-U.S. [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate (percent)	4.30%	4.90%	2.20%
Long-term rate of return on funded assets (percent)	5.50%	4.20%	3.50%
Long-term rate of compensation increase (percent)	4.50%	5.20%	4.20%
Service cost	$ 338	$ 323	$ 570
Interest cost	823	922	614
Expected return on plan assets	(955)	(688)	(815)
Amortization of actuarial loss/(gain)	97	108	180
Amortization of prior service cost	50	52	43
Net pension enhancement and curtailment/settlement cost	16	5	4
Net periodic benefit cost	369	722	596
Net actuarial loss/(gain)	(611)	602	(1,641)
Amortization of actuarial (loss)/gain	(112)	(108)	(183)
Prior service cost/(credit)	81	153	84
Amortization of prior service (cost)/credit	(44)	(52)	(40)
Foreign exchange rate changes	(102)	46	(199)
Total recorded in other comprehensive income	(788)	641	(1,979)
Total recorded in net periodic benefit cost and other comprehensive income, before tax	$ (419)	$ 1,363	$ (1,383)