| Component: (Network and Table) | |
|---|---|
| Network | 2499404 - Disclosure - Segment Reporting - Consolidated Revenues by Geographic Area (Details) (http://www.merck.com/role/SegmentReportingConsolidatedRevenuesByGeographicAreaDetails) |
| Table | Schedule of Revenues from External Customers and Long-Lived Assets [Table] |
| Reporting Entity [Axis] | 0000310158 (http://www.sec.gov/CIK) |
| Revenues from External Customers and Long-Lived Assets [Line Items] | Period [Axis] | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2016-01-01 - 2016-12-31 | 2015-01-01 - 2015-12-31 | 2014-01-01 - 2014-12-31 | |||||||||||||||||||
| Geographical [Axis] | Geographical [Axis] | Geographical [Axis] | |||||||||||||||||||
| United States | Europe, Middle East and Africa | Asia Pacific | Japan | Latin America | Other | Geographical [Domain] | United States | Europe, Middle East and Africa | Asia Pacific | Japan | Latin America | Other | Geographical [Domain] | United States | Europe, Middle East and Africa | Asia Pacific | Japan | Latin America | Other | Geographical [Domain] | |
Sales | 39,807,000,000 | 39,498,000,000 | 42,237,000,000 | ||||||||||||||||||