Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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- Definition

Weighted average interest rate of long-term debt outstanding calculated over time.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

The portion of the carrying amount of short-term borrowings outstanding as of the balance sheet date which accrues interest at a set, unchanging rate.

+ References

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- Definition

For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, average borrowings during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(3))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph (a)
-Publisher SEC

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph (b)
-Subparagraph (1)
-Publisher SEC

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Short-Term Debt - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2023	Dec. 31, 2022	Jul. 01, 2022
Short-term Debt [Line Items]
Average balance of short-term debt		$ 1,140	$ 1,650
Accrued interest payable on short-term debt		$ 6	$ 7
Minimum \| Riverbend
Short-term Debt [Line Items]
Fixed interest rate (as a percentage)				6.00%
Maximum \| Riverbend
Short-term Debt [Line Items]
Fixed interest rate (as a percentage)				8.00%
Recourse Subordinate Securities Financing Receivable \| HEI at Redwood
Short-term Debt [Line Items]
Long-term debt, weighted average interest rate, over time	4.21%
Recourse Subordinate Securities Financing Receivable \| HEI at Redwood \| October 2022 through September 2023
Short-term Debt [Line Items]
Long-term debt, weighted average interest rate, over time	5.71%
Recourse Subordinate Securities Financing Receivable \| HEI at Redwood \| October 2023 through September 2024
Short-term Debt [Line Items]
Long-term debt, weighted average interest rate, over time	7.21%