Cover Page - shares	3 Months Ended
	Mar. 31, 2020	Apr. 17, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	1-38143
Registrant Name	Baker Hughes Company
Entity Incorporation, State Code	DE
Entity Tax Identification Number	81-4403168
Entity Address, Address Line One	17021 Aldine Westfield
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, par value $0.0001 per share
Trading Symbol	BKR
Security Exchange Name	NYSE
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 Central Index Key	0001701605
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false
Common Class A
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		655,034,801
Common Class B
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		377,427,844