CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Assets
Cash and cash equivalents	$ 6.4	$ 71.4
Accounts receivable and accrued unbilled revenues, net of reserves of $4.3 and $3.1, respectively	175.9	203.9
Receivables from related parties	4.5	4.2
Inventories	71.7	70.4
Regulatory assets	26.6	46.0
Materials and supplies, at average cost	34.1	25.5
Prepaid taxes	116.7	90.0
Other current assets	14.1	16.7
Current assets	450.0	528.1
Property, plant, and equipment, net of accumulated depreciation of $1,253.9 and $1,213.8, respectively	2,338.2	2,345.7
Regulatory assets	373.4	379.0
Receivables from related parties	13.4	13.7
Goodwill	36.4	36.4
Other long-term assets	83.2	83.1
Total assets	3,294.6	3,386.0
Liabilities and Shareholders' Equity
Short-term debt	5.1	10.0
Current portion long-term debt	150.0	150.0
Accounts payable	99.8	102.8
Payables to related parties	18.7	23.2
Regulatory liabilities	22.8	18.5
Other current liabilities	54.1	59.1
Current liabilities	350.5	363.6
Long-term debt to parent	8.3	8.6
Long-term debt	721.2	721.1
Deferred income taxes	471.7	427.9
Deferred investment tax credits	8.9	9.2
Regulatory liabilities	255.5	255.9
Environmental remediation liabilities	75.2	76.1
Pension and other postretirement benefit obligations	164.9	220.4
Payables to related parties	8.4	9.0
Other long-term liabilities	94.8	95.8
Long-term liabilities	1,808.9	1,824.0
Commitments and contingencies
Preferred stock - $100 par value; 1,000,000 shares authorized; 511,882 shares issued and outstanding	51.2	51.2
Common stock - $4 par value; 32,000,000 shares authorized; 23,896,962 shares issued and outstanding	95.6	95.6
Additional paid-in capital	553.9	626.7
Retained earnings	434.5	424.9
Total liabilities and shareholders' equity	$ 3,294.6	$ 3,386.0