Regulatory Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2012

Regulatory Assets and Liabilities Disclosure [Abstract]

Regulatory Assets Included on the Consolidated Balance Sheets

SCE's regulatory assets included on the consolidated balance sheets are:

	December 31,
(in millions)	2012		2011
Current:
Regulatory balancing accounts	$	502	$	223
Energy derivatives	70		264
Other	—		7
Total Current	572		494
Long-term:
Deferred income taxes, net	2,663		2,020
Pensions and other postretirement benefits	1,550		1,703
Energy derivatives1	900		836
Unamortized investments, net	507		484
Unamortized loss on reacquired debt	228		249
Nuclear-related investment, net	141		156
Regulatory balancing accounts	73		69
Other	360		298
Total Long-term	6,422		5,815
Total Regulatory Assets	$	6,994	$	6,309

¹ Included in 2011 is the regulatory offset of a power purchase agreement between SCE and EME with a fair market value of $349 million, which was eliminated in the Edison International consolidated financial statements.

Regulatory Liabilities Included on the Consolidated Balance Sheets

Edison International's and SCE's regulatory liabilities included on the consolidated balance sheets are:

	December 31,
(in millions)	2012		2011
Current:
Regulatory balancing accounts	$	484	$	661
Other	52		9
Total Current	536		670
Long-term:
Costs of removal	2,731		2,697
Asset Retirement Obligations	1,385		1,105
Regulatory balancing accounts	1,091		864
Other	7		4
Total Long-term	5,214		4,670
Total Regulatory Liabilities	$	5,750	$	5,340