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Contingencies and Commitments (Details) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2024 USD ($) agreement | Dec. 31, 2023 USD ($)
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 3,740 |
Number of Agreements | 131 |
Obligations Number Of Agreements | 131 |
Accrual for Environmental Loss Contingencies | $ 4 | $ 9
Letters of Credit Outstanding, Amount | 1,900 |
Customary payment guarantees | 866 |
Tax equity financing guarantees | 647 |
Subsidiaries |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | 1,500 |
Guarantee Obligations [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 3,271 |
Number of Agreements | 84 |
Obligations Number Of Agreements | 84 |
Financial Standby Letter of Credit [Member] | Unsecured Debt [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 224 |
Number of Agreements | 34 |
Obligations Number Of Agreements | 34 |
Financial Standby Letter of Credit [Member] | Secured Debt [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 23 |
Number of Agreements | 7 |
Obligations Number Of Agreements | 7 |
Surety Bond |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 2 |
Number of Agreements | 2 |
Obligations Number Of Agreements | 2 |
Standby Letters of Credit [Member] | Secured Debt [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 220 |
Number of Agreements | agreement | 4 |
Obligations Number Of Agreements | agreement | 4 |
Minimum [Member] | Guarantee Obligations [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | $ 1 |
Minimum [Member] | Financial Standby Letter of Credit [Member] | Unsecured Debt [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | 1 |
Minimum [Member] | Financial Standby Letter of Credit [Member] | Secured Debt [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | $ 1 |
Minimum [Member] | Standby Letters of Credit [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 1.00% |
Letter of credit fee percentage paid | 1.00% |
Maximum [Member] | Guarantee Obligations [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | $ 970 |
Maximum [Member] | Financial Standby Letter of Credit [Member] | Unsecured Debt [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | 70 |
Maximum [Member] | Financial Standby Letter of Credit [Member] | Secured Debt [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | 6 |
Maximum [Member] | Surety Bond |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | $ 1 |
Maximum [Member] | Standby Letters of Credit [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 3.00% |
Letter of credit fee percentage paid | 3.00% |

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