Restructuring Program - Narrative (Details) - USD ($) $ in Millions					12 Months Ended			116 Months Ended
	Oct. 21, 2021	Sep. 06, 2018	Aug. 31, 2016	May 06, 2014	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2023
2014-2018 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Approved restructuring program costs			$ 5,700	$ 3,500
Reallocation of previously approved capital expenditures to be spent on restructuring program cash costs			600
2014-2018 Restructuring Program \| Maximum
Restructuring Cost and Reserve [Line Items]
Capital expenditures, authorized amount			1,600	$ 2,200
2014-2018 Restructuring Program \| Restructuring Program Charges
Restructuring Cost and Reserve [Line Items]
Approved restructuring program costs			4,100
2014-2018 Restructuring Program \| Cash Costs
Restructuring Cost and Reserve [Line Items]
Approved restructuring program costs			3,100
2014-2018 Restructuring Program \| Non-cash Costs
Restructuring Cost and Reserve [Line Items]
Approved restructuring program costs			$ 1,000
Simplify to Grow Program
Restructuring Cost and Reserve [Line Items]
Approved restructuring program costs	$ 7,700
Restructuring and related implementation charges					$ 131	$ 123	$ 321	$ 5,278
Implementation costs					$ 25	$ 87	$ 167	$ 2,100
Simplify to Grow Program \| Maximum
Restructuring Cost and Reserve [Line Items]
Capital expenditures, authorized amount	2,300
Increase in restructuring program costs		$ 1,300
Increase in capital expenditures		$ 700
Simplify to Grow Program \| Restructuring Program Charges
Restructuring Cost and Reserve [Line Items]
Approved restructuring program costs	5,400
Simplify to Grow Program \| Cash Costs
Restructuring Cost and Reserve [Line Items]
Approved restructuring program costs	4,100
Simplify to Grow Program \| Non-cash Costs
Restructuring Cost and Reserve [Line Items]
Approved restructuring program costs	$ 1,300