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Segment and Geographic Area Information - Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Information
Operating Earnings	$ 5,357	$ 4,532	$ 3,650
Loss on extinguishment of debt		(63)	(167)
Share-based compensation	(546)	(519)	(477)
Amortization of intangible assets	(2,132)	(1,936)	(2,178)
Earnings from Continuing Operations Before Taxes	4,968	4,077	2,873
Total Reportable Segment Operating Earnings
Segment Information
Operating Earnings	9,308	8,290	7,914
Corporate functions and benefit plan costs
Segment Information
Corporate functions and benefit plan costs	(518)	(468)	(618)
Reconciling items
Segment Information
Net interest expense	(500)	(576)	(721)
Share-based compensation	(546)	(519)	(477)
Amortization of intangible assets	(2,132)	(1,936)	(2,178)
Other, net	(644)	(651)	(880)
Charges for restructuring actions and other cost reduction initiatives	$ 125	$ 215	$ 153

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The aggregate expense (excluding discontinued operations) charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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