Regulatory Assets, Liabilities, And Balancing Accounts (Tables)

3 Months Ended

Mar. 31, 2016

Long-Term Regulatory Assets

	Balance at
	March 31,		December 31,
(in millions)	2016		2015
Pension benefits	$	2,414	$	2,414
Deferred income taxes		3,265		3,054
Utility retained generation		399		411
Environmental Compliance Costs		683		748
Price risk management		134		138
Unamortized loss, net of gain, on reacquired debt		90		94
Other		145		170
Total long-term regulatory assets	$	7,130	$	7,029

Long-Term Regulatory Liabilities

	Balance at
	March 31,		December 31,
(in millions)	2016		2015
Cost of removal obligations	$	4,717	$	4,605
Recoveries in excess of asset retirement obligations		645		631
Public purpose programs		620		600
Other		504		485
Total long-term regulatory liabilities	$	6,486	$	6,321

Regulatory Balancing Accounts Receivable

	Receivable
	Balance at
	March 31,		December 31,
(in millions)	2016		2015
Electric distribution	$	515	$	380
Utility generation		225		122
Gas distribution		280		493
Energy procurement		87		262
Public purpose programs		149		155
Other		465		348
Total regulatory balancing accounts receivable	$	1,721	$	1,760

Regulatory Balancing Accounts Payable

	Payable
	Balance at
	March 31,			December 31,
(in millions)	2016			2015
Energy procurement	$	184	$		112
Public purpose programs		212			244
Other		308			359
Total regulatory balancing accounts payable	$	704	$		715