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Contingencies and Commitments (Tables) | 6 Months Ended
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Jun. 30, 2026
Commitments and Contingencies Disclosure [Abstract] |
Schedule Of Contingent Contractual Obligations [Table Text Block] | The following table summarizes the Parent Company’s consolidated contingent contractual obligations as of June 30, 2026. Amounts presented in the following table represent the Parent Company’s current undiscounted exposure to guarantees and the range of maximum undiscounted potential exposure per individual agreement. The maximum exposure is not reduced by the amounts, if any, that could be recovered under the recourse or collateralization provisions in the guarantees.
Parent Company Contingent Contractual Obligations |  | Maximum Exposure (in millions) |  | Number of Agreements |  | Maximum Exposure Range for Each Agreement (in millions)
Guarantees and commitments (1) |  | $ | 4,368 |  |  | 24 |  |  | < $1 — 894
Letters of credit under the unsecured credit facilities |  | 174 |  |  | 9 |  |  | < $1 — 60
Letters of credit under bilateral agreements |  | 159 |  |  | 8 |  |  | < $1 — 64
Letters of credit under the revolving credit facility |  | 9 |  |  | 15 |  |  | < $1 — 4
Total |  | $ | 4,710 |  |  | 56 |  |  |
_____________________________ (1)Excludes payment obligation and commercial transaction arrangements entered into by the Parent Company on behalf of its consolidated subsidiaries, which relate to the Company's own future performance.
Schedule of Contingent Contractual Obligations - Subsidiary [Table Text Block] | The following table summarizes our subsidiaries’ consolidated contingent contractual obligations as of June 30, 2026. These contingent contractual obligations are issued at the subsidiary level and are non-recourse to the Parent Company. Amounts presented in the following table represent our subsidiaries' current undiscounted exposure to guarantees and the range of maximum undiscounted potential exposure per individual agreement. The maximum exposure is not reduced by the amounts, if any, that could be recovered under the recourse or collateralization provisions in the guarantees.
Subsidiary Contingent Contractual Obligations |  | Maximum Exposure (in millions) |  | Number of Agreements |  | Maximum Exposure Range for Each Agreement (in millions)
Guarantees and commitments |  | $ | 3,265 |  |  | 43 |  | < $1 — 512
Letters of credit under subsidiary credit facilities |  | 2,060 |  |  | 383 |  | < $1 — 85
Surety bonds |  | 73 |  |  | 101 |  | < $1 — 10
Total |  | $ | 5,398 |  |  | 527 |  |

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- Definition Provides pertinent information about guarantee obligations and letters of credit issued, or each group of similar obligations, including the maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee. + References No definition available. + Details
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- Definition Schedule of Contingent Contractual Obligations - Subsidiary + References No definition available. + Details
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