Equity - Changes in Number of Shares Outstanding (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Payments for repurchase of common stock	$ 0	$ 250	$ 2,486
Class A
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends per share (in dollars per share)	$ 0.72	$ 0.72	$ 0.72
Class A | BHGE LLC | General Electric Company
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Sale of stock, number of shares issued in transaction (in shares)		132,000,000
Class B | BHGE LLC | General Electric Company
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock repurchased (in shares)		12,000,000
Payments for repurchase of common stock		$ 250
Dividends per share (in dollars per share)		$ 21.07
Common Stock | Class A
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	650,065,000	513,399,000
Exchange of Class B common stock for Class A common stock	65,995,000	132,250,000
Stock repurchase program (in shares)	0	0
Ending balance (in shares)	723,999,000	650,065,000	513,399,000
Common Stock | Class A | RSUs
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issue of shares upon vesting of restricted stock units (in shares)	7,939,000	4,416,000
Common Stock | Class B
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)	377,428,000	521,543,000
Exchange of Class B common stock for Class A common stock	(65,995,000)	(132,250,000)
Stock repurchase program (in shares)	0	(11,865,000)
Ending balance (in shares)	311,433,000	377,428,000	521,543,000
Common Stock | Class B | RSUs
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issue of shares upon vesting of restricted stock units (in shares)	0	0