Condensed Consolidated Statements of Financial Position (Unaudited) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011		Jun. 30, 2011
Current assets
Cash and cash equivalents	$ 87		$ 69		$ 21
Short-term investments	61		53		0
Receivables
Gas, unbilled and other receivables	349		692		181
Energy marketing receivables	347		607		614
Less allowance for uncollectible accounts	39		15		22
Total receivables	657		1,284		773
Inventories	549		750		544
Derivative instruments – current portion	181		226		111
Regulatory assets – current portion	146	[1]	131	[2]	71
Other current assets	199		233		83
Total current assets	1,880		2,746		1,603
Long-term assets and other deferred debits
Property, plant and equipment	10,091		9,779		6,447
Less accumulated depreciation	2,004		1,879		1,860
Property, plant and equipment, net	8,087		7,900		4,587
Goodwill	1,813		1,813		418
Regulatory assets – noncurrent portion	1,128	[1]	1,079	[2]	543
Derivative instruments – noncurrent portion	45		62		29
Other long-term assets and other deferred debits	321		313		37
Total long-term assets and other deferred debits	11,394		11,167		5,614
Total assets	13,274	[3]	13,913	[4]	7,217	[3]
Current liabilities
Short-term debt	731		1,321		142
Current portion of long-term debt and capital leases	231		17		12
Energy marketing trade payables	383		590		681
Accounts payable – trade	248		294		130
Accrued regulatory infrastructure program costs – current portion	158		131		90
Customer deposits and credit balances	139		152		39
Accrued expenses	138		162		112
Regulatory liabilities – current portion	137	[1]	112	[2]	66
Accrued environmental remediation liabilities – current portion	59		37		20
Derivative instruments – current portion	58		99		22
Other current liabilities	178		169		85
Total current liabilities	2,460		3,084		1,399
Long-term liabilities and other deferred credits
Long-term debt	3,334		3,561		2,164
Accumulated deferred income taxes	1,509		1,445		853
Regulatory liabilities – noncurrent portion	1,453	[1]	1,405	[2]	296
Accrued environmental remediation liabilities	371		290		171
Accrued other retirement benefit costs	296		320		32
Accrued pension obligations	221		238		152
Accrued regulatory infrastructure program costs	119		145		168
Derivative instruments – noncurrent portion	8		11		7
Other long-term liabilities and other deferred credits	74		75		61
Total long-term liabilities and other deferred credits	7,385		7,490		3,904
Total liabilities and other deferred credits	9,845		10,574		5,303
Equity
AGL Resources Inc. common shareholders’ equity, $5 par value; 750,000,000 shares authorized	3,412		3,318		1,896
Noncontrolling interest	17		21		18
Total equity	3,429		3,339		1,914
Total liabilities and equity	$ 13,274		$ 13,913		$ 7,217

[1] The increase in regulatory assets and liabilities from December 31, 2011, includes an increase in our recoverable ERC due to a $103 million increase in the estimates of our ERC liabilities primarily related to Nicor Gas' former operating sites in Illinois. See Note 9 - Commitments, Guarantees and Contingencies for additional ERC disclosures.

[2] The increase in regulatory assets and liabilities from June 30, 2011, includes $545 million related to the addition of Nicor Gas' regulatory assets and includes $1,330 million related to the addition of Nicor Gas' regulatory liabilities.

[3] Identifiable assets are those used in each segment's operations.

[4] Identifiable assets are those assets used in each segment's operations.