Investments (Tables) - Southern California Edison

3 Months Ended

Mar. 31, 2016

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)		March 31, 2016		December 31, 2015		March 31, 2016		December 31, 2015
Stocks	—	$	311	$	304	$	1,464	$	1,460
Municipal bonds	2054	736		691		894		840
U.S. government and agency securities	2046	1,002		1,070		1,092		1,128
Corporate bonds	2057	662		708		731		755
Short-term investments and receivables/payables1	One-year	106		144		109		148
Total		$	2,817	$	2,917	$	4,290	$	4,331

¹ Short-term investments include $8 million and $81 million of repurchase agreements payable by financial institutions which earn interest, are fully secured by U.S. Treasury securities and mature by April 4, 2016 and January 5, 2016 as of March 31, 2016 and December 31, 2015, respectively.

Summary of Changes in the Fair Value of Trust

The following table sets forth a summary of changes in the fair value of the trust:

	Three months ended March 31,
(in millions)	2016			2015
Balance at beginning of period	$	4,331		$	4,799
Gross realized gains	17			27
Gross realized losses	(3		)	(2		)
Unrealized gains, net	59			44
Other-than-temporary impairments	(7		)	(4		)
Interest and dividends	29			28
Contributions	—			7
Income taxes	(18		)	—
Decommissioning disbursements	(116		)	—
Administrative expenses and other	(2		)	(3		)
Balance at end of period	$	4,290		$	4,896