Commitments and Contingencies - PAC - Contingency Accrual (Details) - Wildfires - PAC - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Loss Contingency - Liabilities
Beginning balance	$ 1,723	$ 424
Accrued losses	0	400
Payments	(18)	0
Ending balance	1,705	824
Loss Contingency - Receivables
Beginning balance	499	246
Accruals	0	41
Payments received	(350)	0
Ending balance	$ 149	$ 287

Amount of loss contingency liability.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-1

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-10

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Amount of cash outflow reducing loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483076/450-20-50-1

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Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable.

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Amount of cash inflow from the collection of receivables related to a loss contingency.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-3

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 17
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-17

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Amount of additions to receivables pertaining to a loss contingency.

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