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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Calculations of Earnings Per Share

The calculations of earnings per share are as follows:


			Three Months Ended June 30,												Six Months Ended June 30,
($ and shares in millions except per share amounts)			2021						2020						2021						2020
Net Income from Continuing Operations Attributable to Merck & Co., Inc.			$	1,213					$	2,341					$	3,958					$	4,812
Income from Discontinued Operations, Net of Taxes and Amounts Attributable to Noncontrolling Interests			332						661						766						1,409
Net Income Attributable to Merck & Co., Inc.			$	1,545					$	3,002					$	4,724					$	6,221
Average common shares outstanding			2,533						2,527						2,532						2,531
Common shares issuable (1)			7						9						8						11
Average common shares outstanding assuming dilution			2,540						2,536						2,540						2,542
Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders:
Income from Continuing Operations			$	0.48					$	0.93					$	1.56					$	1.90
Income from Discontinued Operations			0.13						0.26						0.30						0.56
Net Income			$	0.61					$	1.19					$	1.87					$	2.46
Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders:
Income from Continuing Operations			$	0.48					$	0.92					$	1.56					$	1.89
Income from Discontinued Operations			0.13						0.26						0.30						0.55
Net Income			$	0.61					$	1.18					$	1.86					$	2.45

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