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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Calculations of Earnings Per Share

The calculations of earnings per share are as follows:

			Three Months Ended March 31,
($ and shares in millions except per share amounts)			2021						2020
Net income attributable to Merck & Co., Inc.			$	3,179					$	3,219
Average common shares outstanding			2,531						2,533
Common shares issuable (1)			10						14
Average common shares outstanding assuming dilution			2,541						2,547
Basic earnings per common share attributable to Merck & Co., Inc. common shareholders			$	1.26					$	1.27
Earnings per common share assuming dilution attributable to Merck & Co., Inc. common shareholders			$	1.25					$	1.26

(1)Issuable primarily under share-based compensation plans.

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- References

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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