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Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Pay vs Performance Disclosure
Net Income Attributable to Merck & Co., Inc.	$ 5,079	$ 4,762

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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