Pension Plans and Other Post Employment Benefit Plans Change in Projected Benefit Obligations, Plan Assets and Funded Status (Details) - USD ($) $ in Millions		8 Months Ended	12 Months Ended
		Aug. 31, 2022	Dec. 31, 2023		Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation			$ 13,400		$ 14,000
Trust Agreement [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation at beginning of the period			182
Benefit obligation at end of the period			155		182
Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation at beginning of the period		$ 19,775	13,982		19,775
Service Cost			18		20	$ 25
Interest Cost			690		505	364
Plan participants' contributions			1		1
Actuarial (gain) loss		(110)	(311)		(3,759)
Benefits Paid			(1,304)		(1,460)
Net effects of acquisitions / divestitures / other	[1]		257		(1,080)
Effect of foreign exchange rates			1		(20)
Benefit obligation at end of the period			13,440		13,982	19,775
Fair value of plan assets at beginning of period		17,827	12,584		17,827
Actual return on plan assets			(661)		(2,765)
Employer contributions			52		60
Plan participants' contributions			1		1
Benefits paid			(1,304)		(1,460)
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan			257	[1]	1,100
Net effects of acquisitions / divestitures / other	[1]				(1,080)
Effect of foreign exchange rates			18		1
Fair value of plan assets at end of period			11,755		12,584	17,827
Funded (unfunded) status of plan			(1,685)		(1,398)
Pension Plan | U.S. Plans with Plan Assets [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Funded (unfunded) status of plan			(1,336)		(1,050)
Pension Plan | Non-U.S. plans with plan assets [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Funded (unfunded) status of plan			(43)		(30)
Pension Plan | All other plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Funded (unfunded) status of plan	[2],[3]		(306)		(318)
Other Post Employment Benefits Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation at beginning of the period		1,362	1,021		1,362
Service Cost			1		1	1
Interest Cost			49		26	21
Plan participants' contributions			20		20
Actuarial (gain) loss			49		(246)
Benefits Paid			(117)		(142)
Net effects of acquisitions / divestitures / other			0		0
Effect of foreign exchange rates			0		0
Benefit obligation at end of the period			925		1,021	1,362
Fair value of plan assets at beginning of period		$ 0	0		0
Actual return on plan assets			0		0
Employer contributions			97		122
Plan participants' contributions			20		20
Benefits paid			(117)		(142)
Net effects of acquisitions / divestitures / other			0		0
Effect of foreign exchange rates			0		0
Fair value of plan assets at end of period			0		0	0
Funded (unfunded) status of plan			(925)		(1,021)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax			0		0	$ (1)
Other Post Employment Benefits Plan | U.S. Plans with Plan Assets [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Funded (unfunded) status of plan			0		0
Other Post Employment Benefits Plan | Non-U.S. plans with plan assets [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Funded (unfunded) status of plan			0		0
Other Post Employment Benefits Plan | All other plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Funded (unfunded) status of plan	[2],[3]		$ (925)		$ (1,021)

[1] elates to transfers of certain benefit obligations and related assets associated with the principal U.S. pension plan to an insurance company through the purchase of nonparticipating group annuity contracts.

[2] As of December 31, 2023 and 2022, $155 million and $182 million, respectively, of the benefit obligations are supported by funding under the Trust agreement, defined in the "Trust Assets" section below.

[3] Includes pension plans maintained around the world where funding is not customary.