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v3.25.3

Contingencies and Commitments (Details) $ in Millions | Sep. 30, 2025 USD ($) agreement | Dec. 31, 2024 USD ($)
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Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 5,663 |
Number of Agreements | 126 |
Obligations Number Of Agreements | 126 |
Accrual for Environmental Loss Contingencies | $ 1 | $ 2
Letters of Credit Outstanding, Amount | 1,800 |
Customary payment guarantees | 2,000 |
Tax equity financing guarantees | 949 |
Surety Bonds and Other Guarantees | 1,300 |
Subsidiaries |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | 6,100 |
Guarantee Obligations [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 5,149 |
Number of Agreements | 87 |
Obligations Number Of Agreements | 87 |
Financial Standby Letter of Credit [Member] | Unsecured Debt [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 158 |
Number of Agreements | 9 |
Obligations Number Of Agreements | 9 |
Financial Standby Letter of Credit [Member] | Secured Debt [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 38 |
Number of Agreements | 23 |
Obligations Number Of Agreements | 23 |
Surety Bond |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 1 |
Number of Agreements | 1 |
Obligations Number Of Agreements | 1 |
Standby Letters of Credit [Member] | Secured Debt [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 317 |
Number of Agreements | agreement | 6 |
Obligations Number Of Agreements | agreement | 6 |
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 |
Maximum [Member] | Guarantee Obligations [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | 1,110 |
Maximum [Member] | Financial Standby Letter of Credit [Member] | Unsecured Debt [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | 60 |
Maximum [Member] | Financial Standby Letter of Credit [Member] | Secured Debt [Member] |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | 10 |
Maximum [Member] | Surety Bond |  |
Schedule Of Contingent Contractual Obligations [Line Items] |  |
Loss Contingency, Estimate of Possible Loss | $ 1 |

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