Pension Plans, Retirement Benefits and Savings Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plans [Member]
Change in projected benefit obligation [Roll Forward]
Benefit obligation, balance, beginning of year	$ 3,638	$ 3,580
Benefits earned	116	108	$ 145
Interest cost on benefit obligation	172	176	101
Actuarial (gain) loss	(155)	124
Benefits paid	(338)	(353)
Foreign currency exchange rate change, change in projected benefit obligation	(2)	3
Benefit obligation, balance, end of year	3,431	3,638	3,580
Change in plan assets [Roll Forward]
Fair value of plan assets, balance, beginning of year	4,246	4,033
Actual return on plan assets	417	549
Company contributions	12	13
Benefits paid	(338)	(353)
Foreign currency exchange rate change, change in plan assets	(3)	4
Fair value of plan assets, balance, end of year	4,334	4,246	4,033
Funded status of plan at end of year	903	608
Amounts recognized in the consolidated balance sheet consist of:
Accrued over-funded benefit plan assets	1,021	722
Accrued under-funded benefit plan liabilities	(118)	(114)
Total amount recognized in the consolidated balance sheet	903	608
Amounts recognized in accumulated other comprehensive loss consist of:
Net actuarial loss (gain)	395	676
Prior service cost (benefit)	1	1
Total amount recognized in accumulated other comprehensive loss	396	677
Pension Plans [Member] | Nonqualified and Foreign Pension Plans [Member]
Change in projected benefit obligation [Roll Forward]
Benefit obligation, balance, beginning of year	184	180
Benefits earned	5	4
Interest cost on benefit obligation	9	9
Actuarial (gain) loss	4	1
Benefits paid	(14)	(13)
Foreign currency exchange rate change, change in projected benefit obligation	(2)	3
Benefit obligation, balance, end of year	186	184	180
Change in plan assets [Roll Forward]
Fair value of plan assets, balance, beginning of year	97	95
Actual return on plan assets	8	(2)
Company contributions	12	13
Benefits paid	(14)	(13)
Foreign currency exchange rate change, change in plan assets	(3)	4
Fair value of plan assets, balance, end of year	100	97	95
Funded status of plan at end of year	(86)	(87)
Amounts recognized in the consolidated balance sheet consist of:
Accrued over-funded benefit plan assets	32	27
Accrued under-funded benefit plan liabilities	(118)	(114)
Total amount recognized in the consolidated balance sheet	(86)	(87)
Amounts recognized in accumulated other comprehensive loss consist of:
Net actuarial loss (gain)	14	13
Prior service cost (benefit)	1	1
Total amount recognized in accumulated other comprehensive loss	15	14
Pension Plans [Member] | United States [Member] | Qualified Plan [Member]
Change in projected benefit obligation [Roll Forward]
Benefit obligation, balance, beginning of year	3,454	3,400
Benefits earned	111	104
Interest cost on benefit obligation	163	167
Actuarial (gain) loss	(159)	123
Benefits paid	(324)	(340)
Foreign currency exchange rate change, change in projected benefit obligation	0	0
Benefit obligation, balance, end of year	3,245	3,454	3,400
Change in plan assets [Roll Forward]
Fair value of plan assets, balance, beginning of year	4,149	3,938
Actual return on plan assets	409	551
Company contributions	0	0	0
Benefits paid	(324)	(340)
Foreign currency exchange rate change, change in plan assets	0	0
Fair value of plan assets, balance, end of year	4,234	4,149	3,938
Funded status of plan at end of year	989	695
Amounts recognized in the consolidated balance sheet consist of:
Accrued over-funded benefit plan assets	989	695
Accrued under-funded benefit plan liabilities	0	0
Total amount recognized in the consolidated balance sheet	989	695
Amounts recognized in accumulated other comprehensive loss consist of:
Net actuarial loss (gain)	381	663
Prior service cost (benefit)	0	0
Total amount recognized in accumulated other comprehensive loss	381	663
Postretirement Benefit Plans [Member]
Change in projected benefit obligation [Roll Forward]
Benefit obligation, balance, beginning of year	92	99
Benefits earned	0	0	0
Interest cost on benefit obligation	4	5	3
Actuarial (gain) loss	(28)	(6)
Benefits paid	(5)	(6)
Foreign currency exchange rate change, change in projected benefit obligation	(1)	0
Benefit obligation, balance, end of year	62	92	99
Change in plan assets [Roll Forward]
Fair value of plan assets, balance, beginning of year	7	8
Actual return on plan assets	0	0
Company contributions	4	5
Benefits paid	(5)	(6)
Fair value of plan assets, balance, end of year	6	7	$ 8
Funded status of plan at end of year	(56)	(85)
Amounts recognized in the consolidated balance sheet consist of:
Accrued under-funded benefit plan liabilities	(56)	(85)
Total amount recognized in the consolidated balance sheet	(56)	(85)
Amounts recognized in accumulated other comprehensive loss consist of:
Net actuarial loss (gain)	(110)	(91)
Prior service cost (benefit)	(4)	(8)
Total amount recognized in accumulated other comprehensive loss	$ (114)	$ (99)