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Related Party Transactions (Details) $ in Millions			3 Months Ended		9 Months Ended
Related Party Transactions (Details) $ in Millions	Sep. 16, 2019	Sep. 15, 2019	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) joint_venture
Related Party Transaction [Line Items]
Number of joint Ventures \| joint_venture							3
Investment securities held on behalf of GE			$ 101		$ 101		$ 283
Total current receivables, gross			6,087		6,087		6,814
Related parties
Related Party Transaction [Line Items]
Total current receivables, gross			604		604		570
Accounts Payable, GE and its affiliates
Related Party Transaction [Line Items]
Accounts payable, related party			408		408		536
GE \| Related parties
Related Party Transaction [Line Items]
Total current receivables, gross			526		526		495
GE \| Related party amount, due to related party
Related Party Transaction [Line Items]
Assets held on behalf of GE			111		111		273
Cash and cash equivalents held on behalf of GE			85		85		162
Investment securities held on behalf of GE			26		26		111
GE \| Sales of products and services, GE and its affiliates
Related Party Transaction [Line Items]
Revenue from related parties			46	$ 71	150	$ 260
GE \| Purchases, GE and its affiliates
Related Party Transaction [Line Items]
Related party purchases			384	$ 336	993	$ 1,215
Principal Owner [Member] \| Purchases, GE and its affiliates
Related Party Transaction [Line Items]
Total current receivables, gross			$ 78		$ 78		$ 75
General Electric Company \| Baker Hughes
Related Party Transaction [Line Items]
Ownership percentage by noncontrolling owners			33.80%		33.80%
Approximate interest	36.80%	50.30%