Segment Information - Assets by Segment (Details) $ in Millions		12 Months Ended
		Dec. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	[1]	$ 53,213	$ 52,234
Number of operating segments | segment		4
Oilfield Services | GE Transaction Agreement
Segment Reporting, Asset Reconciling Item [Line Items]
Indefinite-lived intangible assets		$ 2,100
Decrease from the corporate segment		2,100
Operating segments
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		50,310	50,537
Operating segments | Oilfield Services
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		30,317	30,647
Operating segments | Oilfield Equipment
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		7,645	7,298
Operating segments | Turbo-machinery & Process Solutions
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		8,365	8,529
Operating segments | Digital Solutions
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		3,983	4,063
Corporate and eliminations
Segment Reporting, Asset Reconciling Item [Line Items]
Assets		$ 2,903	$ 1,697

[1] Total assets include $273 million and $896 million of assets held on behalf of GE, of which $162 million and $747 million is cash and cash equivalents and $111 million and $149 million is investment securities at December 31, 2019 and 2018, respectively, and a corresponding amount of liability is reported in short-term borrowings. See "Note 17. Related Party Transactions" for further details.