Segment and Geographic Area Information - Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Information
Operating earnings	$ 8,425	$ 5,357	$ 4,532
Loss on extinguishment of debt			(63)
Share-based compensation	(640)	(546)	(519)
Amortization of intangible assets	(2,047)	(2,132)	(1,936)
Earnings from Continuing Operations Before Taxes	8,211	4,968	4,077
Total Reportable Segment Operating Earnings
Segment Information
Operating earnings	13,422	9,308	8,290
Corporate functions
Segment Information
Corporate functions and benefit plans costs	(801)	(518)	(468)
Reconciling items
Segment Information
Net interest expense	(490)	(500)	(576)
Loss on extinguishment of debt			(63)
Share-based compensation	(640)	(546)	(519)
Amortization of intangible assets	(2,047)	(2,132)	(1,936)
Other, net	(1,233)	(644)	(651)
Charges for restructuring actions and other cost reduction initiatives	$ 375	$ 125	$ 215