Employee Benefit Plans (Obligations and Funded Status) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Benefits
Change in benefit obligations:
Benefit obligations at January 1,	$ 9,498	$ 9,298
Service costs	156	143	$ 187
Interest costs	460	474	328
Plan participants’ contributions	0	0
Plan amendments	3	0
Net actuarial (gains) losses	(281)	299
Acquisition, divestitures, settlements and curtailments	(36)	(35)
Benefits paid	(638)	(636)
Effect of foreign currency translation	(85)	(45)
Benefit obligations at December 31,	9,077	9,498	9,298
Change in plan assets
Estimated fair value of plan assets at January 1,	8,270	8,294
Actual return on plan assets	39	529
Acquisition, divestitures and settlements	(36)	(35)
Plan participants’ contributions	0	0
Employer contributions	256	140
Benefits paid	(638)	(636)
Effect of foreign currency translation	(55)	(22)
Estimated fair value of plan assets at December 31,	7,836	8,270	8,294
Over (under) funded status at December 31,	(1,241)	(1,228)
Amounts recognized in the consolidated balance sheets
Other assets	132	229
Other liabilities	(1,373)	(1,457)
Net amount recognized	(1,241)	(1,228)
Accumulated other comprehensive (income) loss:
Net actuarial (gains) losses	2,331	2,360
Prior service costs (credit)	(11)	(25)
AOCI, before income tax	2,320	2,335
Accumulated benefit obligation	8,969	9,377
Other Postretirement Benefits
Change in benefit obligations:
Benefit obligations at January 1,	765	794
Service costs	3	3	4
Interest costs	40	43	34
Plan participants’ contributions	29	30
Plan amendments	0	0
Net actuarial (gains) losses	(16)	(23)
Acquisition, divestitures, settlements and curtailments	(2)	0
Benefits paid	(83)	(86)
Effect of foreign currency translation	(6)	4
Benefit obligations at December 31,	730	765	794
Change in plan assets
Estimated fair value of plan assets at January 1,	1,334	1,303
Actual return on plan assets	59	72
Acquisition, divestitures and settlements	(2)	0
Plan participants’ contributions	29	30
Employer contributions	(5)	13
Benefits paid	(83)	(86)
Effect of foreign currency translation	(3)	2
Estimated fair value of plan assets at December 31,	1,329	1,334	$ 1,303
Over (under) funded status at December 31,	599	569
Amounts recognized in the consolidated balance sheets
Other assets	907	886
Other liabilities	(308)	(317)
Net amount recognized	599	569
Accumulated other comprehensive (income) loss:
Net actuarial (gains) losses	(502)	(509)
Prior service costs (credit)	0	0
AOCI, before income tax	(502)	(509)
United States Pension Plan of US Entity, Non Qualified [Member]
Change in benefit obligations:
Benefit obligations at January 1,	1,000
Benefit obligations at December 31,	1,000	1,000
Changes to financial assumptions [Member] | Pension Benefits
Change in benefit obligations:
Net actuarial (gains) losses	386	(256)
Changes to financial assumptions [Member] | Other Postretirement Benefits
Change in benefit obligations:
Net actuarial (gains) losses	15	(8)
Changes to demographic assumptions [Member] | Pension Benefits
Change in benefit obligations:
Net actuarial (gains) losses	2	54
Changes to demographic assumptions [Member] | Other Postretirement Benefits
Change in benefit obligations:
Net actuarial (gains) losses	0	8
Changes to Plan Experience [Member] | Pension Benefits
Change in benefit obligations:
Net actuarial (gains) losses	(107)	(97)
Changes to Plan Experience [Member] | Other Postretirement Benefits
Change in benefit obligations:
Net actuarial (gains) losses	$ 1	$ 23