Cover
|
May 26, 2020 |
| Schedule of Capitalization, Equity [Line Items] |
|
| Document Type |
8-K
|
| Amendment Flag |
false
|
| Document Period End Date |
May 26, 2020
|
| Entity File Number |
1-6571
|
| Entity Registrant Name |
Merck & Co., Inc.
|
| Entity Central Index Key |
0000310158
|
| Entity Tax Identification Number |
22-1918501
|
| Entity Incorporation, State or Country Code |
NJ
|
| Entity Address, Address Line One |
2000 Galloping Hill Road
|
| Entity Address, City or Town |
Kenilworth
|
| Entity Address, State or Province |
NJ
|
| Entity Address, Postal Zip Code |
07033
|
| City Area Code |
908
|
| Local Phone Number |
740-4000
|
| Written Communications |
false
|
| Soliciting Material |
false
|
| Pre-commencement Tender Offer |
false
|
| Pre-commencement Issuer Tender Offer |
false
|
| Entity Emerging Growth Company |
false
|
| Common Stock |
|
| Schedule of Capitalization, Equity [Line Items] |
|
| Title of 12(b) Security |
Common Stock
|
| Trading Symbol |
MRK
|
| Security Exchange Name |
NYSE
|
| 1.125% Notes due 2021 |
|
| Schedule of Capitalization, Equity [Line Items] |
|
| Title of 12(b) Security |
1.125% Notes due 2021
|
| Trading Symbol |
MRK/21
|
| Security Exchange Name |
NYSE
|
| 0.500% Notes due 2024 |
|
| Schedule of Capitalization, Equity [Line Items] |
|
| Title of 12(b) Security |
0.500% Notes due 2024
|
| Trading Symbol |
MRK24
|
| Security Exchange Name |
NYSE
|
| 1.875% Notes due 2026 |
|
| Schedule of Capitalization, Equity [Line Items] |
|
| Title of 12(b) Security |
1.875% Notes due 2026
|
| Trading Symbol |
MRK/26
|
| Security Exchange Name |
NYSE
|
| 2.500% Notes due 2034 |
|
| Schedule of Capitalization, Equity [Line Items] |
|
| Title of 12(b) Security |
2.500% Notes due 2034
|
| Trading Symbol |
MRK/34
|
| Security Exchange Name |
NYSE
|
| 1.375% Notes due 2036 |
|
| Schedule of Capitalization, Equity [Line Items] |
|
| Title of 12(b) Security |
1.375% Notes due 2036
|
| Trading Symbol |
MRK36A
|
| Security Exchange Name |
NYSE
|