Regulatory Assets, Liabilities, And Balancing Accounts (Tables)

9 Months Ended

Sep. 30, 2015

Long-Term Regulatory Assets

	Balance at
	September 30,		December 31,
(in millions)	2015		2014
Pension benefits	$	2,304	$	2,347
Deferred income taxes		2,771		2,390
Environmental compliance costs		705		717
Utility retained generation		423		456
Price risk management		143		127
Unamortized loss, net of gain, on reacquired debt		98		113
Electromechanical meters		18		70
Other		122		102
Total long-term regulatory assets	$	6,584	$	6,322

Long-Term Regulatory Liabilities

	Balance at
	September 30,		December 31,
(in millions)	2015		2014
Cost of removal obligations	$	4,509	$	4,211
Recoveries in excess of asset retirement obligations		610		754
Public purpose programs		701		701
Other		474		624
Total long-term regulatory liabilities	$	6,294	$	6,290

Regulatory Balancing Accounts Receivable

	Receivable
	Balance at
	September 30,		December 31,
(in millions)	2015		2014
Electric distribution	$	265	$	344
Utility generation		24		261
Gas distribution		718		566
Energy procurement		390		608
Public purpose programs		136		109
Other		324		378
Total regulatory balancing accounts receivable	$	1,857	$	2,266

Regulatory Balancing Accounts Payable

	Payable
	Balance at
	September 30,		December 31,
(in millions)	2015		2014
Energy procurement	$	181	$	188
Public purpose programs		173		154
Other		449		748
Total regulatory balancing accounts payable	$	803	$	1,090