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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Millions
Jun. 30, 2018
Dec. 31, 2017
Current assets    
Cash and cash equivalents $ 29.8 $ 38.9
Accounts receivable and unbilled revenues, net of reserves of $157.5 and $143.2, respectively 1,086.1 1,350.7
Materials, supplies, and inventories 466.6 539.0
Prepayments 178.6 210.0
Other 49.3 74.9
Current assets 1,810.4 2,213.5
Long-term assets    
Property, plant, and equipment, net of accumulated depreciation of $8,512.1 and $8,618.5, respectively 21,078.4 21,347.0
Regulatory assets 3,645.9 2,803.2
Equity investment in transmission affiliates 1,596.6 1,553.4
Goodwill 3,052.8 3,053.5
Other 753.5 619.9
Long-term assets 30,127.2 29,377.0
Total assets 31,937.6 31,590.5
Current liabilities    
Short-term debt 1,370.0 1,444.6
Current portion of long-term debt 293.5 842.1
Accounts payable 681.0 859.9
Accrued payroll and benefits 130.7 169.1
Accrued taxes 213.5 178.5
Other 364.5 375.1
Current liabilities 3,053.2 3,869.3
Long-term liabilities    
Long-term debt 9,209.3 8,746.6
Deferred income taxes 3,117.1 2,999.8
Deferred revenue, net 531.8 543.3
Regulatory liabilities 3,959.2 3,718.6
Environmental remediation liabilities 617.2 617.4
Pension and OPEB obligations 490.4 397.4
Other 1,203.2 1,206.3
Long-term liabilities 19,128.2 18,229.4
Commitments and contingencies (Note 19)
Common shareholders' equity    
Common stock – $0.01 par value; 325,000,000 shares authorized; 315,533,448 and 315,574,624 shares outstanding, respectively 3.2 3.2
Additional paid in capital 4,271.0 4,278.5
Retained earnings 5,449.1 5,176.8
Accumulated other comprehensive income 2.5 2.9
Common shareholders' equity 9,725.8 9,461.4
Preferred stock of subsidiary 30.4 30.4
Total liabilities and equity $ 31,937.6 $ 31,590.5