Regulatory Assets and Liabilities Regulatory Assets and Liabilities (Tables)

12 Months Ended

Sep. 30, 2014

Components of regulatory assets and regulatory liabilities are summarized in the table below.



Regulatory Assets and Liabilities At September 30
	2014		2013
Current regulatory assets
Unrealized losses on commodity derivatives	$	134	$	183
Deferred nuclear generating units	237		237
Environmental agreements	54		73
Fuel cost adjustment receivable	9		—
Environmental cleanup costs – Kingston ash spill	47		68
Total current regulatory assets	481		561
Non-current regulatory assets
Deferred pension costs and other post-retirement benefits costs	4,297		4,076
Unrealized losses on interest rate derivatives	957		808
Nuclear decommissioning costs	931		893
Environmental cleanup costs - Kingston ash spill	421		681
Non-nuclear decommissioning costs	645		571
Deferred nuclear generating units	1,255		1,438
Unrealized losses on commodity derivatives	72		139
Environmental agreements	108		189
Other non-current regulatory assets	308		336
Total non-current regulatory assets	8,994		9,131
Total regulatory assets	$	9,475	$	9,692

Current regulatory liabilities
Fuel cost adjustment tax equivalents	$	182	$	176
Fuel cost adjustment liability	—		29
Unrealized gains on commodity derivatives	2		7
Total current regulatory liabilities	184		212
Non-current regulatory liabilities
Unrealized gains on commodity derivatives	—		1
Total non-current regulatory liabilities	—		1
Total regulatory liabilities	$	184	$	213