Components of Accumulated Other Comprehensive Loss, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 46,977	$ 32,578	$ 29,723
Other comprehensive income	217	154	239
BHE GT&S acquisition - noncontrolling interest		3,916
Ending balance	50,589	46,977	32,578
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,552)	(1,706)	(1,945)
Other comprehensive income	212	154	239
BHE GT&S acquisition - noncontrolling interest		0
Ending balance	(1,340)	(1,552)	(1,706)
Unrecognized Amounts on Retirement Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(492)	(417)	(358)
Other comprehensive income	174	(65)	(59)
BHE GT&S acquisition - noncontrolling interest		(10)
Ending balance	(318)	(492)	(417)
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,062)	(1,296)	(1,623)
Other comprehensive income	(24)	234	327
BHE GT&S acquisition - noncontrolling interest		0
Ending balance	(1,086)	(1,062)	(1,296)
Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(8)	7	36
Other comprehensive income	67	(15)	(29)
BHE GT&S acquisition - noncontrolling interest		0
Ending balance	59	(8)	7
Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(10)	0	0
BHE GT&S acquisition - noncontrolling interest		10
Ending balance	(5)	(10)	0
Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	3,967	129	130
Other comprehensive income	5	0	0
BHE GT&S acquisition - noncontrolling interest		3,916
Ending balance	$ 3,895	$ 3,967	$ 129