CONSOLIDATED BALANCE SHEETS (Baltimore Gas and Electric Company) (USD $) In Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2010
Current Assets
Cash and cash equivalents	$ 954.8	$ 2,028.5
Income taxes receivable, net	81.3	152.7
Fuel stocks	394.1	361.1
Materials and supplies	136.3	104.3
Restricted cash-consolidated variable interest entity	46.0	52.3
Other	241.4	254.5
Total current assets	4,742.1	6,452.6
Investments and Other Noncurrent Assets
Regulatory assets (net)	370.8	374.1
Other	302.5	286.3
Total investments and other noncurrent assets	4,352.1	4,287.1
Plant in service
Total Assets	19,713.4	20,018.5
Current Liabilities
Current portion of long-term debt	131.5	245.6
Current portion of long-term debt-consolidated variable interest entity	61.3	59.7
Accounts payable	987.0	1,072.6
Deferred income taxes	20.2	56.5
Accrued taxes	85.1	71.0
Accrued expenses and other	261.5	358.1
Total current liabilities	2,895.6	3,277.2
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	2,667.6	2,489.8
Deferred investment tax credits	25.4	27.6
Other	248.5	296.0
Total deferred credits and other noncurrent liabilities	4,195.0	4,184.5
Long-term Debt
Long-term Debt, Net of Current Portion-consolidated variable interest entities	370.8	394.6
Total long-term debt	3,947.5	4,054.2
Equity
Common shareholder's equity	8,014.5	7,829.2
Preference stock not subject to mandatory redemption	190.0	190.0
Total equity	8,304.5	8,108.0
Commitments, Guarantees, and Contingencies (see Notes)
Total Liabilities and Equity	19,713.4	20,018.5
Baltimore Gas and Electric Company
Current Assets
Cash and cash equivalents	120.6	50.0
Accounts receivable (net of allowance for uncollectibles of $33.9 and $34.9, respectively)	328.8	351.4
Accounts receivable, unbilled (net of allowance for uncollectibles of $1.0 and $1.0, respectively)	173.4	268.8
Accounts receivable, affiliated companies	2.1	1.1
Income taxes receivable, net		55.9
Fuel stocks	51.4	66.5
Materials and supplies	39.6	31.2
Prepaid taxes other than income taxes	2.3	51.7
Regulatory assets (net)	85.2	78.7
Restricted cash-consolidated variable interest entity	25.2	29.5
Other	7.2	9.5
Total current assets	835.8	994.3
Investments and Other Noncurrent Assets
Regulatory assets (net)	370.8	374.1
Receivable, affiliated company	476.2	494.3
Other	48.4	52.2
Total investments and other noncurrent assets	895.4	920.6
Plant in service
Electric	5,287.9	5,127.9
Gas	1,353.8	1,323.0
Common	436.0	507.8
Total plant in service	7,077.7	6,958.7
Accumulated depreciation	(2,441.7)	(2,449.3)
Net plant in service	4,636.0	4,509.4
Construction work in progress	290.8	232.9
Plant held for future use	10.2	10.1
Net utility plant	4,937.0	4,752.4
Total Assets	6,668.2	6,667.3
Current Liabilities
Current portion of long-term debt	131.5	22.0
Current portion of long-term debt-consolidated variable interest entity	61.3	59.7
Accounts payable	215.1	252.9
Accounts payable, affiliated companies	69.3	84.9
Customer deposits	80.0	78.9
Deferred income taxes	32.1	30.1
Accrued taxes	39.2	19.0
Liability for uncertain tax positions	58.7	62.8
Accrued expenses and other	92.0	99.7
Total current liabilities	779.2	710.0
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	1,420.9	1,354.9
Payable, affiliated company	255.1	250.8
Deferred investment tax credits	7.9	8.4
Other	16.6	20.1
Total deferred credits and other noncurrent liabilities	1,700.5	1,634.2
Long-term Debt
Rate stabilization bonds-consolidated variable interest entity	424.7	454.4
Other long-term debt	1,431.5	1,431.5
6.20% deferrable interest subordinated debentures due October 15, 2043 to wholly owned BGE Capital Trust II relating to trust preferred securities	257.7	257.7
Unamortized discount and premium	(1.9)	(2.0)
Current portion of long-term debt	(131.5)	(22.0)
Long-term Debt, Net of Current Portion-consolidated variable interest entities	(61.3)	(59.7)
Total long-term debt	1,919.2	2,059.9
Equity
Common shareholder's equity	2,079.3	2,073.2
Preference stock not subject to mandatory redemption	190.0	190.0
Total equity	2,269.3	2,263.2
Commitments, Guarantees, and Contingencies (see Notes)
Total Liabilities and Equity	$ 6,668.2	$ 6,667.3