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Investments (Tables) | 9 Months Ended
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Sep. 30, 2018
Southern California Edison |
Investment [Line Items] |
Amortized Cost and Fair Value of the Trust Investments | The following table sets forth amortized cost and fair value of the trust investments (see Note 4 for a discussion of fair value of the trust investments):
| Longest Maturity Dates |  | Amortized Cost |  | Fair Value
(in millions) |  | September 30, 2018 |  | December 31, 2017 |  | September 30, 2018 |  | December 31, 2017
Stocks | — |  | * |  |  | $ | 236 |  |  | $ | 1,600 |  |  | $ | 1,596 |
Municipal bonds | 2057 |  | 662 |  |  | 643 |  |  | 752 |  |  | 768 |
U.S. government and agency securities | 2067 |  | 1,270 |  |  | 1,235 |  |  | 1,317 |  |  | 1,319 |
Corporate bonds | 2050 |  | 565 |  |  | 579 |  |  | 607 |  |  | 643 |
Short-term investments and receivables/payables 1 | One-year |  | 52 |  |  | 110 |  |  | 54 |  |  | 114 |
Total |  |  | $ | 2,549 |  |  | $ | 2,803 |  |  | $ | 4,330 |  |  | $ | 4,440 |
* | Effective January 1, 2018, SCE adopted an accounting standards update related to the classification and measurement of financial instruments in which equity investments are measured at fair value. See Note 1 for further information.
1 | Short-term investments include $79 million and $29 million of repurchase agreements payable by financial institutions which earn interest, are fully secured by U.S. Treasury securities and mature by October 1, 2018 and January 2, 2018 as of September 30, 2018 and December 31, 2017, respectively.

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