Recent Financing Transactions - NPC (Details) - NPC - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2026	Mar. 31, 2025
Debt Instrument [Line Items]
Repayments of debt		$ 93	$ 0
NPC Pollution Control Refunding Revenue Bonds, 3.750%, Series 2017, Due 2036 \| Subsidiary debt
Debt Instrument [Line Items]
Repayments of debt	$ 40
NPC Pollution Control Refunding Revenue Bonds, 4.125%, Series 2017A, Due 2032 \| Subsidiary debt
Debt Instrument [Line Items]
Repayments of debt	40
NPC Pollution Control Refunding Revenue Bonds, 3.750%, Series 2017B, due 2039 \| Subsidiary debt
Debt Instrument [Line Items]
Repayments of debt	$ 13

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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BERKSHIRE HATHAWAY ENERGY CO 10-Q