Condensed Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings (Loss)	Accumulated Other Comprehensive Loss	Non- controlling Interests
Beginning Balance at Dec. 31, 2018	$ 35,013	$ 0	$ 18,659	$ 25	$ (1,219)	$ 17,548
Comprehensive income (loss):
Net income (loss)	177			80		97
Other comprehensive loss	(99)				(66)	(33)
Cash dividend	(278)		(172)	(106)
Distributions to GE	(282)					(282)
Effect of exchange of Class B common stock and associated BHH LLC Units	0		4,740		(332)	(4,408)
Repurchase and cancellation of Class B common stock and associated BHH LLC Units	(250)		107		(18)	(339)
Stock-based compensation cost	136		136
Other	19		100	1	(59)	(23)
Ending Balance at Sep. 30, 2019	34,436	0	23,570	0	(1,694)	12,560
Beginning Balance at Jun. 30, 2019	34,781	0	18,668	(9)	(1,271)	17,393
Comprehensive income (loss):
Net income (loss)	117			57		60
Other comprehensive loss	(115)				(73)	(42)
Cash dividend	(93)		(45)	(48)
Distributions to GE	(94)					(94)
Effect of exchange of Class B common stock and associated BHH LLC Units	0		4,740		(332)	(4,408)
Repurchase and cancellation of Class B common stock and associated BHH LLC Units	(250)		107		(18)	(339)
Stock-based compensation cost	50		50
Other	40		50			(10)
Ending Balance at Sep. 30, 2019	34,436	0	23,570	0	(1,694)	12,560
Beginning Balance at Dec. 31, 2019	34,499	0	23,565	0	(1,636)	12,570
Comprehensive income (loss):
Net income (loss)	(16,712)			(10,592)		(6,120)
Other comprehensive loss	(133)				(81)	(52)
Cash dividend	(359)		(359)
Distributions to GE	(199)					(199)
Effect of exchange of Class B common stock and associated BHH LLC Units	0		608		(84)	(524)
Stock-based compensation cost	164		164
Other	(11)		(1)	(2)		(8)
Ending Balance at Sep. 30, 2020	17,249	0	23,977	(10,594)	(1,801)	5,667
Beginning Balance at Jun. 30, 2020	17,565	0	23,432	(10,424)	(1,771)	6,328
Comprehensive income (loss):
Net income (loss)	(270)			(170)		(100)
Other comprehensive loss	83				54	29
Cash dividend	(123)		(123)
Distributions to GE	(63)					(63)
Effect of exchange of Class B common stock and associated BHH LLC Units	0		608		(84)	(524)
Stock-based compensation cost	52		52
Other	5		8			(3)
Ending Balance at Sep. 30, 2020	$ 17,249	$ 0	$ 23,977	$ (10,594)	$ (1,801)	$ 5,667