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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract] |
Summary of undiscounted future expected payments for power purchase agreements that have been approved by the CPUC and have completed major milestones for construction | At December 31, 2012, the undiscounted future minimum expected payments for the SCE power purchase agreements that have been approved by the CPUC and have completed major milestones for construction were as follows:
(in millions) | Renewable Energy Contracts |  | QF Power Purchase Agreements |  | Other Purchase Agreements
2013 | $ | 629 |  |  | $ | 361 |  |  | $ | 851 |
2014 | 685 |  |  | 358 |  |  | 891 |
2015 | 756 |  |  | 324 |  |  | 765 |
2016 | 780 |  |  | 258 |  |  | 531 |
2017 | 781 |  |  | 226 |  |  | 523 |
Thereafter | 13,031 |  |  | 387 |  |  | 2,554 |
Total future commitments | $ | 16,662 |  |  | $ | 1,914 |  |  | $ | 6,115 |
Summary of power purchase agreements treated as operating and capital leases | The amount of this discount is shown in the table below as the amount representing interest.
(in millions) | Operating Leases |  | Capital Leases
2013 | $ | 958 |  |  | $ | 33 |
2014 | 914 |  |  | 71 |
2015 | 933 |  |  | 109 |
2016 | 856 |  |  | 109 |
2017 | 830 |  |  | 109 |
Thereafter | 11,688 |  |  | 1,642 |
Total future commitments | $ | 16,179 |  |  | $ | 2,073 |
Amount representing executory costs |  |  |  | (438 | )
Amount representing interest |  |  |  | (752 | )
Net commitments |  |  |  | $ | 883 |
Summary of estimated minimum future commitments for noncancelable power plant facilities and other operating leases | The following summarizes the estimated minimum future commitments for SCE's noncancelable other operating leases (excluding SCE's power purchase agreements discussed above):
(in millions) | Operating Leases – Other
2013 | $ | 71 |
2014 | 68 |
2015 | 54 |
2016 | 41 |
2017 | 27 |
Thereafter | 201 |
Total future commitments | $ | 462 |
Summary of certain future other commitments | Certain other commitments for SCE for the years 2013 through 2017 are estimated below:
(in millions) | 2013 |  | 2014 |  | 2015 |  | 2016 |  | 2017 |  | Thereafter |  | Total
Nuclear fuel supply contracts 1 | $ | 170 |  |  | $ | 76 |  |  | $ | 76 |  |  | $ | 126 |  |  | $ | 95 |  |  | $ | 369 |  |  | $ | 912 |
Other fuel supply contracts | 42 |  |  | 60 |  |  | 86 |  |  | 48 |  |  | — |  |  | — |  |  | 236 |
Other contractual obligations | 32 |  |  | 38 |  |  | 38 |  |  | 19 |  |  | 15 |  |  | 271 |  |  | 413 |
1 | These supply contracts are under review as part of events at San Onofre. See "—Contingencies—San Onofre Outage, Inspection and Repair Issues" below for further information.

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- Definition This element represents the disclosure of commitments for fuel supply contracts, gas and coal transportation agreements, and purchased power for the next five years. + References No definition available. + Details
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