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Commitments and Guarantees Unrecorded Unconditional Purchase Obligations (Details) $ in Millions | Dec. 31, 2022 USD ($)
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Capital Addition Purchase Commitments [Member] |
Unrecorded Unconditional Purchase Obligation [Line Items] |
Unrecorded Unconditional Purchase Obligation | $ 395
Unrecorded Unconditional Purchase Obligation, Due within One Year | 239
Unrecorded Unconditional Purchase Obligation, Due within Two Years | 70
Unrecorded Unconditional Purchase Obligation, Due within Three Years | 36
Unrecorded Unconditional Purchase Obligation, Due within Four Years | 5
Unrecorded Unconditional Purchase Obligation, Due within Five Years | 2
Unrecorded Unconditional Purchase Obligation, Due after Five Years | 43
Long-term Contract for Purchase of Electric Power [Domain] |
Unrecorded Unconditional Purchase Obligation [Line Items] |
Unrecorded Unconditional Purchase Obligation | 5,599
Unrecorded Unconditional Purchase Obligation, Due within One Year | 457
Unrecorded Unconditional Purchase Obligation, Due within Two Years | 449
Unrecorded Unconditional Purchase Obligation, Due within Three Years | 428
Unrecorded Unconditional Purchase Obligation, Due within Four Years | 303
Unrecorded Unconditional Purchase Obligation, Due within Five Years | 309
Unrecorded Unconditional Purchase Obligation, Due after Five Years | 3,653
Electric Transmission [Member] |
Unrecorded Unconditional Purchase Obligation [Line Items] |
Unrecorded Unconditional Purchase Obligation | 133
Unrecorded Unconditional Purchase Obligation, Due within One Year | 17
Unrecorded Unconditional Purchase Obligation, Due within Two Years | 17
Unrecorded Unconditional Purchase Obligation, Due within Three Years | 20
Unrecorded Unconditional Purchase Obligation, Due within Four Years | 5
Unrecorded Unconditional Purchase Obligation, Due within Five Years | 5
Unrecorded Unconditional Purchase Obligation, Due after Five Years | 69
Public Utility Districts [Member] |
Unrecorded Unconditional Purchase Obligation [Line Items] |
Unrecorded Unconditional Purchase Obligation | 77
Unrecorded Unconditional Purchase Obligation, Due within One Year | 12
Unrecorded Unconditional Purchase Obligation, Due within Two Years | 12
Unrecorded Unconditional Purchase Obligation, Due within Three Years | 11
Unrecorded Unconditional Purchase Obligation, Due within Four Years | 10
Unrecorded Unconditional Purchase Obligation, Due within Five Years | 9
Unrecorded Unconditional Purchase Obligation, Due after Five Years | 23
Natural gas [Member] |
Unrecorded Unconditional Purchase Obligation [Line Items] |
Unrecorded Unconditional Purchase Obligation | 508
Unrecorded Unconditional Purchase Obligation, Due within One Year | 158
Unrecorded Unconditional Purchase Obligation, Due within Two Years | 43
Unrecorded Unconditional Purchase Obligation, Due within Three Years | 38
Unrecorded Unconditional Purchase Obligation, Due within Four Years | 37
Unrecorded Unconditional Purchase Obligation, Due within Five Years | 30
Unrecorded Unconditional Purchase Obligation, Due after Five Years | 202
Coal and transportationSupply Agreements [Member] |
Unrecorded Unconditional Purchase Obligation [Line Items] |
Unrecorded Unconditional Purchase Obligation | 81
Unrecorded Unconditional Purchase Obligation, Due within One Year | 27
Unrecorded Unconditional Purchase Obligation, Due within Two Years | 27
Unrecorded Unconditional Purchase Obligation, Due within Three Years | 27
Unrecorded Unconditional Purchase Obligation, Due within Four Years | 0
Unrecorded Unconditional Purchase Obligation, Due within Five Years | 0
Unrecorded Unconditional Purchase Obligation, Due after Five Years | 0
Commitments [Member] |
Unrecorded Unconditional Purchase Obligation [Line Items] |
Unrecorded Unconditional Purchase Obligation | 6,793
Unrecorded Unconditional Purchase Obligation, Due within One Year | 910
Unrecorded Unconditional Purchase Obligation, Due within Two Years | 618
Unrecorded Unconditional Purchase Obligation, Due within Three Years | 560
Unrecorded Unconditional Purchase Obligation, Due within Four Years | 360
Unrecorded Unconditional Purchase Obligation, Due within Five Years | 355
Unrecorded Unconditional Purchase Obligation, Due after Five Years | $ 3,990

X
- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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X
- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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X
- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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X
- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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X
- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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- Definition Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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X
- Definition Amount of fixed and determinable portion of unrecorded unconditional purchase obligation to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308 + Details
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