Components of Accumulated Other Comprehensive Loss, Net - BHE (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	$ 50,639	$ 50,589
Other comprehensive income (loss)	40	(18)
Balance	51,651	50,424
Accumulated Other Comprehensive (Loss) Income, Net
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(2,149)	(1,340)
Other comprehensive income (loss)	40	(18)
Balance	(2,109)	(1,358)
Unrecognized Amounts on Retirement Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(390)	(318)
Other comprehensive income (loss)	(4)	15
Balance	(394)	(303)
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(1,896)	(1,086)
Other comprehensive income (loss)	99	(110)
Balance	(1,797)	(1,196)
Unrealized Losses on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	135	59
Other comprehensive income (loss)	(55)	77
Balance	80	136
Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(2)	(5)
Other comprehensive income (loss)	0	0
Balance	$ (2)	$ (5)