Note 2 - Significant Accounting Policies and Methods of Application (Tables)

9 Months Ended

Sep. 30, 2012

Marketable Securities [Table Text Block]

In millions	September 30, 2012		December 31, 2011		September 30, 2011
Money market funds (1)	$	69	$	59	$	0
Corporate bonds (2)		6		6		0
Other investments (2)		4		7		0
Total	$	79	$	72	$	0

In millions	September 30, 2012		December 31, 2011		September 30, 2011
Cash and cash equivalents	$	10	$	9	$	0
Short-term investments		60		53		0
Other long-term assets and other deferred debits		9		10		0
Total	$	79	$	72	$	0

	Three months ended September 30,				Nine months ended September 30,
In millions	2012		2011		2012		2011
Retail operations	$	0	$	0	$	3	$	0
Wholesale services		0		9		18		9
Midstream operations		0		0		1		0

Schedule of Regulatory Assets [Table Text Block]

In millions	September 30, 2012 (1)		December 31, 2011 (2)		September 30, 2011
Regulatory assets
Recoverable regulatory infrastructure program costs	$	46	$	48	$	62
Recoverable ERC		33		7		7
Recoverable pension and other retirement benefit costs		27		29		0
Other		52		47		30
Total regulatory assets - current		158		131		99
Regulatory assets
Recoverable ERC		421		351		213
Recoverable regulatory infrastructure program costs		286		305		269
Recoverable pension and other retirement benefit costs		228		263		10
Long-term debt fair value adjustment		92		99		0
Other		59		61		40
Total regulatory assets - noncurrent		1,086		1,079		532
Total regulatory assets	$	1,244	$	1,210	$	631

Schedule of Regulatory Liabilities [Table Text Block]

Regulatory liabilities
Accrued natural gas costs	$	62	$	53	$	26
Bad debt rider		30		30		0
Accumulated removal costs		14		14		0
Other		11		15		8
Total regulatory liabilities - current		117		112		34
Regulatory liabilities
Accumulated removal costs		1,381		1,321		254
Unamortized investment tax credit		30		32		11
Regulatory income tax liability		23		27		14
Bad debt rider		16		14		0
Other		15		11		17
Total regulatory liabilities - noncurrent		1,465		1,405		296
Total regulatory liabilities	$	1,582	$	1,517	$	330

Schedule of Weighted Average Number of Shares [Table Text Block]

	Three months ended September 30,					Nine months ended September 30,
In millions (except per share amounts)	2012		2011			2012		2011
Net income (loss) attributable to AGL Resources Inc.	$	9	$	(3	)	$	173	$	139
Denominator:
Basic weighted average number of shares outstanding (1)		117.1		78.1			116.9		77.9
Effect of dilutive securities		0.4		0.0			0.4		0.5
Diluted weighted average number of shares outstanding		117.5		78.1			117.3		78.4
Basic and diluted earnings (loss) per share
Basic	$	0.08	$	(0.04	)	$	1.48	$	1.79
Diluted	$	0.08	$	(0.04	)	$	1.48	$	1.78