Pension Plans and Postretirement Benefits Other Than Pensions

Pension Plans

SCE made contributions of $2 million during the three months ended March 31, 2012 and expects to make $261 million of additional contributions during the remainder of 2012. SCE's 2012 annual contributions made to most of its pension plans are anticipated to be recovered through CPUC-approved regulatory mechanisms, pending the outcome of the 2012 GRC decision. Annual contributions to these plans are expected to be, at a minimum, equal to the related annual expense.

Expense components are:



	Three months ended March 31,
(in millions)	2012			2011
Service cost	$	37		$	38
Interest cost	45			47
Expected return on plan assets	(55		)	(56		)
Amortization of prior service cost	1			2
Amortization of net loss	15			4
Expense under accounting standards	$	43		$	35
Regulatory adjustment (deferred)	25			(6		)
Total expense recognized	$	68		$	29

Postretirement Benefits Other Than Pensions

SCE made contributions of $5 million during the three months ended March 31, 2012 and expects to make $57 million of additional contributions during the remainder of 2012. SCE's 2012 annual contributions are anticipated to be recovered through CPUC-approved regulatory mechanisms, pending the outcome of the 2012 GRC decision. Annual contributions are expected to be, at a minimum, equal to the total annual expense for these plans. Benefits under these plans, with some exceptions, are generally unvested and subject to change.

Expense components are:



	Three months ended March 31,
(in millions)	2012			2011
Service cost	$	12		$	10
Interest cost	28			31
Expected return on plan assets	(27		)	(27		)
Amortization of prior service credit	(9		)	(9		)
Amortization of net loss	11			9
Total expense	$	15		$	14

Transfer of Certain Postretirement Benefits to Edison International

In March 2012, Edison International agreed to assume the liabilities for active employees of SCE and its subsidiaries under the specified plans related to deferred compensation and executive post retirement benefits. SCE is obligated to reimburse Edison International upon settlement of liabilities on an after tax basis. Included in the consolidated balance sheet at March 31, 2012 was $111 million related to this obligation.