| USD ($) $ in Millions | LTM | Dec 31, 2025 | Dec 31, 2024 | Dec 31, 2023 | Dec 31, 2022 | Dec 31, 2021 | Dec 31, 2020 | Dec 31, 2019 | Dec 31, 2018 | Dec 31, 2017 | Dec 31, 2016 | Dec 31, 2015 | Dec 31, 2014 | Dec 31, 2013 | Dec 31, 2012 | Dec 31, 2011 | Dec 31, 2010 | Dec 31, 2009 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sales | $ 66,569 | $ 65,011 | $ 64,168 | $ 60,115 | ||||||||||||||
Costs, Expenses and Other | ||||||||||||||||||
Cost of sales | 17,996 | 16,382 | 15,193 | 16,126 | ||||||||||||||
Selling, general and administrative | 11,135 | 10,733 | 10,816 | 10,504 | ||||||||||||||
Research and development | 30,453 | 15,789 | 17,938 | 30,531 | ||||||||||||||
Restructuring costs | 606 | 889 | 309 | 599 | ||||||||||||||
Equity income from affiliates | - | - | - | - | ||||||||||||||
U.S. Vioxx Settlement Agreement charge | - | - | - | - | ||||||||||||||
Other (income) expense, net | (431) | (151) | 24 | (466) | ||||||||||||||
Total costs, expenses and other | 60,621 | 43,944 | 44,232 | 58,226 | ||||||||||||||
Income Before Taxes | 5,948 | 21,067 | 19,936 | 1,889 | ||||||||||||||
Taxes on Income | 2,779 | 2,804 | 2,803 | 1,512 | ||||||||||||||
Net Income | 3,169 | 18,263 | 17,133 | - | ||||||||||||||
Net Income from Continuing Operations | - | - | - | 377 | ||||||||||||||
Less: Net Income Attributable to Noncontrolling Interests | (4) | 9 | 16 | 12 | ||||||||||||||
Net Income from Continuing Operations Attributable to Merck & Co., Inc. | - | - | - | 365 | ||||||||||||||
Income from Discontinued Operations, Net of Taxes and Amounts Attributable to Noncontrolling Interests | - | - | - | 0 | ||||||||||||||
Net Income Attributable to Merck & Co., Inc. | 3,173 | 18,254 | 17,117 | 365 | ||||||||||||||
Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders | ||||||||||||||||||
Income from Continuing Operations (in dollars per share) | - | - | - | $ 0.14 | ||||||||||||||
Income from Discontinued Operations (in dollars per share) | - | - | - | 0 | ||||||||||||||
Preferred Stock Dividends | - | - | - | - | ||||||||||||||
Net Income Available to Common Shareholders | - | - | - | - | ||||||||||||||
Basic Earnings per Common Share Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share) | 1.26 | 7.3 | 6.76 | 0.14 | ||||||||||||||
Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders | ||||||||||||||||||
Income from Continuing Operations (in dollars per share) | - | - | - | 0.14 | ||||||||||||||
Income from Discontinued Operations (in dollars per share) | - | - | - | 0 | ||||||||||||||
Earnings per Common Share Assuming Dilution Attributable to Merck & Co., Inc. Common Shareholders (in dollars per share) | $ 1.25 | $ 7.28 | $ 6.74 | $ 0.14 |