Pension and Other Postretirement Benefits - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Oct. 31, 2021	Mar. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Restructuring and other charges				$ 56	$ 90	$ 182
Average duration for plans' projected cash flows				10 years
Period expected long-term rate of return is applied				5 years
Expected long-term rate of return on plan assets				6.70%	6.20%	6.00%
Number of years over actual annual healthcare cost trend experience				20 years
Health care cost trend rate assumed for next year				5.50%	5.50%	5.50%
Rate to which the cost trend rate gradually declines				4.50%	4.50%	4.50%
Pension contributions				$ 43	$ 96	$ 257
Expenses related to defined contribution plan				$ 76	66	73
Minimum
Defined Benefit Plan Disclosure [Line Items]
Rate to which the cost trend rate gradually declines				1.80%
Maximum
Defined Benefit Plan Disclosure [Line Items]
Rate to which the cost trend rate gradually declines				11.30%
Scenario, forecast
Defined Benefit Plan Disclosure [Line Items]
Contribution next fiscal year			$ 45
Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Restructuring and other charges	$ 34					69
Decrease in postretirement benefits liability	$ 125
Curtailment (charge) benefit				$ 0	(6)	0
Other postretirement benefits
Defined Benefit Plan Disclosure [Line Items]
Decrease in postretirement benefits liability		$ 39				6
Curtailment (charge) benefit				$ 0	0	2
Number of years over actual annual healthcare cost trend experience				3 years
United States
Defined Benefit Plan Disclosure [Line Items]
Pension contributions				$ 43	96
Payment for pension benefit plan in excess of minimum required					12
United States | Scenario, forecast
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on plan assets			7.00%
Contribution next fiscal year			$ 35
United States | Other postretirement benefits
Defined Benefit Plan Disclosure [Line Items]
Curtailment (charge) benefit					$ 23	66
Percent reduction of plan participants					70.00%
Foreign Plan | Other postretirement benefits
Defined Benefit Plan Disclosure [Line Items]
Decrease in postretirement benefits liability				2
Pension Settlement Cost
Defined Benefit Plan Disclosure [Line Items]
Restructuring and other charges				17	$ 12	$ 8
Pension Settlement Cost | United States
Defined Benefit Plan Disclosure [Line Items]
Restructuring and other charges				$ 41