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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2024

Earnings Per Share [Abstract]

Calculations of Earnings Per Share

The calculations of earnings (loss) per share are as follows:

			Three Months Ended June 30,												Six Months Ended June 30,
($ and shares in millions except per share amounts)			2024						2023						2024						2023
Net Income (Loss) Attributable to Merck & Co., Inc.			$	5,455					$	(5,975)					$	10,217					$	(3,154)
Average common shares outstanding			2,534						2,539						2,534						2,539
Common shares issuable (1)			10						—						10						—
Average common shares outstanding assuming dilution			2,544						2,539						2,544						2,539
Basic Earnings (Loss) per Common Share Attributable to Merck & Co., Inc. Common Shareholders			$	2.15					$	(2.35)					$	4.03					$	(1.24)
Earnings (Loss) per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders			$	2.14					$	(2.35)					$	4.02					$	(1.24)

(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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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