Note 3 - Merger with Nicor (Tables)

12 Months Ended

Dec. 31, 2012

Purchase Price Calculation Table Text Block

In millions, except per share price 1
Nicor shares outstanding at the Effective Date		45.5
Exchange ratio		0.8382
Number of shares of AGL Resources common stock issued		38.2
Volume-weighted average price of AGL Resources common stock on December 8, 2011	$	39.90
Cost of equity issued	$	1,523
Nicor shares outstanding at the Effective Date		45.5
Cash payment per share of Nicor common stock	$	21.20
Cash paid for Nicor common shares outstanding	$	966
Cash paid to repurchase outstanding equity awards	$	14
Cost of debt issued	$	980
Total purchase consideration	$	2,503

Schedule of Purchase Price Allocation [Table Text Block]

In millions
Current assets	$	955
Property, plant and equipment		3,192
Goodwill		1,423
Other noncurrent assets, excluding goodwill		891
Current liabilities		(1,194	)
Long-term debt		(599	)
Other noncurrent liabilities		(2,165	)
Total purchase consideration	$	2,503

Schedule of Goodwill [Table Text Block]

In millions	Distribution Operations		Retail Operations			Wholesale services			Midstream Operations			Cargo Shipping			Other			Consolidated
Goodwill - December 31, 2010	$	404	$	0		$	0		$	14		$	0		$	0		$	418
Merger with Nicor		1,182		124			2			2			77			8			1,395
Goodwill - December 31, 2011		1,586		124			2			16			77			8			1,813
Merger with Nicor and other		54		(2	)		(2	)		(2	)		(16	)		(8	)		24
Goodwill - December 31, 2012	$	1,640	$	122		$	0		$	14			61		$	0		$	1,837

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]

In millions	Fair Value		Weighted average amortization period (years)
Trade names:
Retail operations	$	29		15
Cargo shipping		15		15
Customer relationships:
Retail operations		53		10
Cargo shipping		6		18
Total	$	103

Fair Value, by Balance Sheet Grouping [Table Text Block]

In millions
Nicor accounts receivable at December 9, 2011	$	400
Cash flows not expected to be collected		24
Fair value of acquired receivables	$	376

Revenues And Earnings Of Business Acquisition Table Text Block

In millions, except per share amounts	Year Ended December 31, 2012		December 10, 2011- December 31, 2011
Total revenues	$	2,063	$	209
Net income (1)	$	70	$	(24	)
Basic earnings per common share	$	0.60	$	(0.30	)
Diluted earnings per common share	$	0.59	$	(0.30	)

Business Acquisition, Pro Forma Information [Table Text Block]

	Year ended December 31
In millions, except per share amounts	2011		2010
Total revenues	$	4,680	$	5,083
Net income attributable to AGL Resources Inc.	$	304	$	343
Basic earnings per common share	$	2.62	$	2.97
Diluted earnings per common share	$	2.61	$	2.96

Regulatory Assets and Liabilities [Member]

Schedule of Purchase Price Allocation [Table Text Block]

In millions
Current assets	$	59
Property, plant and equipment		4,881
Other noncurrent assets, excluding goodwill		567
Current liabilities		(107	)
Other noncurrent liabilities		(1,138	)