Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Operating revenues (includes revenue taxes of $18 and $74 for the three and six months in 2015 and $26 and $94 for the three and six months in 2014)		$ 674	$ 889	$ 2,395	$ 3,351
Operating expenses
Cost of goods sold		222	402	1,157	1,802
Operation and maintenance		209	211	458	500
Depreciation and amortization		98	95	195	188
Taxes other than income taxes		38	42	114	130
Total operating expenses		567	750	1,924	2,620
Operating income		107	139	471	731
Other income		4	2	7	5
Interest expense, net		(42)	(45)	(86)	(91)
Income before income taxes		69	96	392	645
Income tax expense		25	37	143	240
Income from continuing operations		44	59	249	405
Income (loss) from discontinued operations, net of tax			1		(49)
Net income		44	60	249	356
Less net income attributable to noncontrolling interest		2	2	14	14
Net income attributable to AGL Resources Inc.		42	58	235	342
Net income attributable to AGL Resources Inc.
Income from continuing operations		$ 42	$ 57	$ 235	$ 391
Basic earnings (loss) per common share
Continuing operations (in Dollars per share)		$ 0.35	$ 0.48	$ 1.97	$ 3.30
Discontinued operations (in Dollars per share)			0.01		(0.42)
Basic earnings per common share attributable to AGL Resources Inc. (in Dollars per share)		0.35	0.49	1.97	2.88
Diluted earnings (loss) per common share
Continuing operations (in Dollars per share)		0.35	0.48	1.96	3.29
Discontinued operations (in Dollars per share)			0.01		(0.42)
Diluted earnings per common share attributable to AGL Resources Inc. (in Dollars per share)		0.35	0.49	1.96	2.87
Cash dividends declared per common share (in Dollars per share)		$ 0.51	$ 0.49	$ 1.02	$ 0.98
Weighted average number of common shares outstanding
Basic (in Shares)	[1]	119.5	118.8	119.4	118.7
Diluted (in Shares)	[2]	119.8	119.2	119.7	119.1

[1] Daily weighted average shares outstanding.

[2] All outstanding stock options whose effect would have been anti-dilutive were excluded from the computation of diluted earnings per common share.