Regulatory Assets and Liabilities

9 Months Ended

Sep. 30, 2012

Regulatory Assets and Liabilities Disclosure [Abstract]

Regulatory Assets and Liabilities

Regulatory Assets and Liabilities

Regulatory Assets

Regulatory assets included on the consolidated balance sheets are:

(in millions)	September 30, 2012		December 31, 2011
Current:
Regulatory balancing accounts	$	108	$	223
Energy derivatives	141		264
Other	1		7
Total Current	250		494
Long-term:
Deferred income taxes – net	2,148		2,020
Pensions and other postretirement benefits	1,657		1,703
Energy derivatives	573		487
Unamortized investments – net	484		484
Unamortized loss on reacquired debt	233		249
Nuclear-related investment – net	145		156
Regulatory balancing accounts	102		69
Other	335		298
Total Long-term	5,677		5,466
Total Regulatory Assets	$	5,927	$	5,960

Regulatory Liabilities

Regulatory liabilities included on the consolidated balance sheets are:

(in millions)	September 30, 2012		December 31, 2011
Current:
Regulatory balancing accounts	$	478	$	661
Other	15		9
Total Current	493		670
Long-term:
Costs of removal	2,745		2,697
Asset Retirement Obligations	1,378		1,105
Regulatory balancing accounts	1,119		864
Other	7		4
Total Long-term	5,249		4,670
Total Regulatory Liabilities	$	5,742	$	5,340