Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 93,000,000	$ 4,000,000
Accounts receivable, net	124,000,000	158,000,000
Unbilled revenues	70,000,000	95,000,000
Inventories	87,000,000	83,000,000
Regulatory assets - current	74,000,000	129,000,000
Other current assets	64,000,000	88,000,000
Total current assets	512,000,000	557,000,000
Electric utility plant, net	6,284,000,000	6,012,000,000
Regulatory assets - noncurrent	525,000,000	524,000,000
Nuclear decommissioning trust	41,000,000	40,000,000
Non-qualified benefit plan trust	33,000,000	33,000,000
Other noncurrent assets	51,000,000	44,000,000
Total assets	7,446,000,000	7,210,000,000
Current liabilities
Accounts payable	114,000,000	98,000,000
Liabilities from price risk mangement activities - current	81,000,000	130,000,000
Short-term debt	0	6,000,000
Current portion of long-term debt	0	133,000,000
Accrued expenses and other current liabilities	247,000,000	259,000,000
Total current liabilities	442,000,000	626,000,000
Long-term debt, net of current portion	2,324,000,000	2,060,000,000
Regulatory liabilities - noncurrent	949,000,000	928,000,000
Deferred income taxes	649,000,000	632,000,000
Unfunded status of pension and postretirement plans	264,000,000	259,000,000
Liabilities from price risk mangement activities - noncurrent	171,000,000	161,000,000
Asset retirement obligations	155,000,000	151,000,000
Non-qualified benefit plan liabilities	106,000,000	106,000,000
Other noncurrent liabilities	83,000,000	29,000,000
Total liabilities	5,143,000,000	4,952,000,000
Commitments and contingencies (see notes)
Equity:
Preferred stock, no par value, 30,000,000 shares authorized; none issued and outstanding as of June 30, 2016 and December 31, 2015	0	0
Common stock, no par value, 160,000,000 shares authorized; 88,920,756 and 88,792,751 shares issued and outstanding as of June 30, 2016 and December 31, 2015, respectively	1,198,000,000	1,196,000,000
Accumulated other comprehensive loss	(8,000,000)	(8,000,000)
Retained earnings	1,113,000,000	1,070,000,000
Total equity	2,303,000,000	2,258,000,000
Total liabilities and equity	$ 7,446,000,000	$ 7,210,000,000