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

3 Months Ended

Mar. 31, 2013

In millions	2013		2012
Retail operations	$	-	$	3
Wholesale services		-		18
Midstream operations		-		1

Schedule of Regulatory Assets [Table Text Block]

In millions	March 31, 2013		December 31, 2012		March 31, 2012
Regulatory assets
Recoverable regulatory infrastructure program costs	$	47	$	47	$	48
Recoverable environmental remediation costs		28		38		7
Recoverable pension and retiree welfare benefit costs		19		19		29
Other regulatory assets		25		41		53
Total regulatory assets - current		119		145		137
Recoverable environmental remediation costs		415		438		349
Recoverable pension and retiree welfare benefit costs		192		196		256
Recoverable regulatory infrastructure program costs		135		167		291
Long-term debt fair value adjustment		88		90		97
Other regulatory assets		48		53		64
Total regulatory assets - long-term		878		944		1,057
Total regulatory assets	$	997	$	1,089	$	1,194
Regulatory liabilities
Accrued natural gas costs	$	133	$	93	$	97
Bad debt rider		39		37		32
Accumulated removal costs		17		16		14
Other regulatory liabilities		49		15		30
Total regulatory liabilities - current		238		161		173
Accumulated removal costs		1,413		1,393		1,339
Unamortized investment tax credit		28		29		32
Regulatory income tax liability		26		27		26
Bad debt rider		20		17		20
Other regulatory liabilities		11		11		14
Total regulatory liabilities - long-term		1,498		1,477		1,431
Total regulatory liabilities	$	1,736	$	1,638	$	1,604

Schedule of Other Nonoperating Income (Expense) [Table Text Block]

	For the three months ended March 31,
In millions	2013			2012
Equity investment income	$	3		$	3
Allowance for funds used during construction (AFUDC) - equity		3			1
Other, net		(1	)		-
Total other income	$	5		$	4

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

	Three months ended March 31,
In millions (except per share amounts)	2013		2012
Net income attributable to AGL Resources Inc.	$	154	$	130
Denominator:
Basic weighted average number of shares outstanding (1)		117.4		116.7
Effect of dilutive securities		0.3		0.3
Diluted weighted average number of shares outstanding		117.7		117.0
Earnings per share:
Basic	$	1.31	$	1.12
Diluted	$	1.31	$	1.11

Schedule of Purchase Price Allocation [Table Text Block]

In millions
Current assets	$	5
PP&E		11
Goodwill		46
Intangible assets		64
Noncurrent liabilities		(4	)
Total	$	122