| Document and Entity Information | Feb. 21, 2025 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | Baker Hughes Co |
| Amendment Flag | false |
| Entity Central Index Key | 0001701605 |
| Document Type | 8-K |
| Document Period End Date | Feb. 21, 2025 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 1-38143 |
| Entity Tax Identification Number | 81-4403168 |
| Entity Address, Address Line One | 575 N. Dairy Ashford Rd. |
| Entity Address, Address Line Two | Suite 100 |
| Entity Address, City or Town | Houston |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77079-1121 |
| City Area Code | (713) |
| Local Phone Number | 439-8600 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A Common Stock, par value $0.0001 per share |
| Trading Symbol | BKR |
| Security Exchange Name | NASDAQ |
| Senior Notes [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 5.125% Senior Notes due 2040 of Baker Hughes Holdings LLC and Baker Hughes Co-Obligor, Inc. |
| Trading Symbol | BKR40 |
| Security Exchange Name | NASDAQ |
