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Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Calculations of Earnings Per Share

The calculations of earnings per share are as follows:


			Three Months Ended September 30,												Nine Months Ended September 30,
($ and shares in millions except per share amounts)			2021						2020						2021						2020
Net Income from Continuing Operations Attributable to Merck & Co., Inc.			$	4,567					$	2,324					$	8,525					$	7,136
Income from Discontinued Operations, Net of Taxes and Amounts Attributable to Noncontrolling Interests			—						617						766						2,025
Net Income Attributable to Merck & Co., Inc.			$	4,567					$	2,941					$	9,291					$	9,161
Average common shares outstanding			2,530						2,529						2,531						2,530
Common shares issuable (1)			6						9						8						11
Average common shares outstanding assuming dilution			2,536						2,538						2,539						2,541
Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders:
Income from Continuing Operations			$	1.81					$	0.92					$	3.37					$	2.82
Income from Discontinued Operations			—						0.24						0.30						0.80
Net Income			$	1.81					$	1.16					$	3.67					$	3.62
Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders:
Income from Continuing Operations			$	1.80					$	0.92					$	3.36					$	2.81
Income from Discontinued Operations			—						0.24						0.30						0.80
Net Income			$	1.80					$	1.16					$	3.66					$	3.61

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