CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents	$ 156.3	$ 18.0
Accounts receivable, net of reserves of $55.2 and $60.3, respectively	341.6	480.7
Receivables from related parties	27.3	0.0
Accrued unbilled revenues	110.6	266.4
Materials, supplies, and inventories	234.1	327.7
Assets held for sale	0.0	51.5
Deferred income taxes	119.4	52.4
Prepaid taxes	77.2	136.2
Other current assets	80.7	57.4
Current assets	1,147.2	1,390.3
Property, plant, and equipment, net of accumulated depreciation of $3,227.2 and $3,322.0, respectively	7,098.2	6,827.9
Regulatory assets	1,582.0	1,585.3
Equity investment in transmission affiliate	552.0	536.7
Goodwill	655.4	655.4
Other long-term assets	276.6	286.4
Total assets	11,311.4	11,282.0
Liabilities and Equity
Short-term debt	314.4	317.6
Current portion of long-term debt	180.0	125.0
Accounts payable	435.1	490.7
Payables to related parties	1.8	0.0
Energy costs refundable through rate adjustments	69.0	44.8
Liabilities held for sale	0.0	13.8
Other current liabilities	303.8	348.7
Current liabilities	1,304.1	1,340.6
Long-term debt	2,901.3	2,956.3
Deferred income taxes	1,692.9	1,570.0
Deferred investment tax credits	65.0	60.6
Regulatory liabilities	492.6	508.8
Environmental remediation liabilities	576.2	579.9
Pension and other postretirement benefit obligations	275.6	274.6
Asset retirement obligations	491.0	479.1
Other long-term liabilities	189.2	161.3
Long-term liabilities	$ 6,683.8	$ 6,590.6
Commitments and contingencies
Common stock – $0.01 par value; 1,000 shares authorized, issued, and outstanding at June 30, 2015 and $1 par value; 200,000,000 shares authorized; 79,963,091 shares issued; 79,534,171 shares outstanding at December 31, 2014	$ 0.0	$ 80.0
Additional paid-in capital	2,699.3	2,642.2
Retained earnings	619.9	626.0
Accumulated other comprehensive loss	(25.0)	(27.6)
Shares in deferred compensation trust	(21.8)	(20.9)
Total common shareholders’ equity	3,272.4	3,299.7
Preferred stock of subsidiary – $100 par value; 1,000,000 shares authorized; 511,882 shares issued; 510,495 shares outstanding	51.1	51.1
Total liabilities and equity	$ 11,311.4	$ 11,282.0