Cover Page - USD ($)
12 Months Ended
Dec. 31, 2019
Feb. 06, 2020
Jun. 30, 2019
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 1-38143    
Entity Registrant Name Baker Hughes Company    
Entity Central Index Key 0001701605    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 81-4403168    
Entity Address, Address Line One 17021 Aldine Westfield Road    
Entity Address, City or Town Houston,    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 77073-5101    
City Area Code 713    
Local Phone Number 439-8600    
Title of 12(b) Security Class A Common Stock, $0.0001 Par Value per Share    
Trading Symbol BKR    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 9,854,020,448
Documents Incorporated by Reference
Portions of Registrant's Definitive Proxy Statement for the 2020 Annual Meeting of Stockholders are incorporated by reference into Part III of this Form 10-K.
Class A      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   653,509,914  
Class B      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding   377,427,884