Pension Plans and Other Post Employment Benefit Plans Amounts Recognized in Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation	$ 12,200	$ 13,400
Noncurrent liabilities	(2,271)	(2,467)
Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net amount recognized	(1,592)	(1,685)
Net loss (gain)	(320)	(487)
Prior service (benefit) cost	17	22
Pretax balance in accumulated other comprehensive (income) loss at end of year	(303)	(465)
Other Post Employment Benefits Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net amount recognized	(812)	(925)
Net loss (gain)	276	238
Prior service (benefit) cost	14	14
Pretax balance in accumulated other comprehensive (income) loss at end of year	290	252
Other Assets [Member] | Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Other Assets	2	2
Other Assets [Member] | Other Post Employment Benefits Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Other Assets	0	0
Accrued and Other Current Liabilities [Member] | Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Current liabilities	(32)	(31)
Accrued and Other Current Liabilities [Member] | Other Post Employment Benefits Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Current liabilities	(103)	(114)
Pension and other post employment benefits - noncurrent [Member] | Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Noncurrent liabilities	(1,562)	(1,656)
Pension and other post employment benefits - noncurrent [Member] | Other Post Employment Benefits Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Noncurrent liabilities	$ (709)	$ (811)