CONSOLIDATED BALANCE SHEETS (Constellation Energy Group, Inc. and Subsidiaries) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Current Assets
Cash and cash equivalents	$ 1,171.0	$ 2,028.5
Accounts receivable (net of allowance for uncollectibles of $90.5 and $85.0, respectively)	1,847.5	2,059.2
Accounts receivable-consolidated variable interest entities (net of allowance for uncollectibles of $101.3 and $87.9, respectively)	319.8	308.9
Income taxes receivable	45.2	152.7
Fuel stocks	411.1	361.1
Materials and supplies	134.2	104.3
Derivative assets	233.8	534.4
Unamortized energy contract assets (includes $106.4 and $400.9, respectively, related to CENG)	195.1	544.7
Restricted cash	2.0	52.0
Restricted cash-consolidated variable interest entities	73.1	52.3
Regulatory assets (net)	128.7	78.7
Other	278.8	175.8
Total current assets	4,840.3	6,452.6
Investments and Other Noncurrent Assets
Investment in CENG	2,967.0	2,991.1
Other investments	196.6	189.9
Regulatory assets (net)	350.3	374.1
Goodwill	283.3	77.0
Derivative assets	258.2	258.9
Unamortized energy contract assets	63.7	109.8
Other	382.0	286.3
Total investments and other noncurrent assets	4,501.1	4,287.1
Property, Plant and Equipment
Property, plant and equipment	15,237.6	13,588.9
Accumulated depreciation	(4,496.0)	(4,310.1)
Net property, plant and equipment	10,741.6	9,278.8
Total Assets	20,083.0	20,018.5
Current Liabilities
Short-term borrowings	160.6	32.4
Current portion of long-term debt	131.5	245.6
Current portion of long-term debt-consolidated variable interest entities	61.3	59.7
Accounts payable	976.0	1,072.6
Accounts payable-consolidated variable interest entities	193.0	189.8
Derivative liabilities	487.8	622.3
Unamortized energy contract liabilities	129.5	130.5
Deferred income taxes	0.2	56.5
Accrued taxes	91.1	71.0
Accrued expenses	285.9	358.1
Other	575.1	438.7
Total current liabilities	3,092.0	3,277.2
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	2,684.8	2,489.8
Asset retirement obligations	32.1	32.3
Derivative liabilities	239.7	353.0
Unamortized energy contract liabilities	328.5	411.1
Defined benefit obligations	595.6	574.7
Deferred investment tax credits	24.3	27.6
Other	251.8	296.0
Total deferred credits and other noncurrent liabilities	4,156.8	4,184.5
Long-term Debt, Net of Current Portion	4,149.5	4,054.2
Long-term Debt, Net of Current Portion-consolidated variable interest entities	404.4	394.6
Common shareholders' equity:
Common stock	3,279.7	3,231.7
Retained earnings	5,370.6	5,270.8
Accumulated other comprehensive loss	(680.9)	(673.3)
Total common shareholders' equity	7,969.4	7,829.2
BGE preference stock not subject to mandatory redemption	190.0	190.0
Noncontrolling interests	120.9	88.8
Total equity	8,280.3	8,108.0
Commitments, Guarantees, and Contingencies (see Notes)
Total Liabilities and Equity	$ 20,083.0	$ 20,018.5