CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating Activities
Net income	$ 111.9	$ 109.8
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization expense	84.6	78.8
Recoveries and refunds of regulatory assets and liabilities	2.6	(9.9)
Bad debt expense	5.2	3.4
Pension and other postretirement (credit) expense	(4.4)	16.9
Pension and other postretirement contributions	(46.7)	(38.1)
Deferred income taxes and investment tax credits	52.1	60.3
Termination of tolling agreement with Fox Energy Company LLC	0	(50.0)
Deferrals to regulatory assets and liabilities	(17.8)	6.8
Other	(10.5)	(5.7)
Changes in working capital
Accounts receivable and accrued unbilled revenues	43.6	25.5
Inventories	(26.5)	0.9
Prepaid taxes	34.9	15.6
Other current assets	1.3	2.8
Accounts payable	(10.3)	(27.5)
Other current liabilities	8.0	22.7
Net cash provided by operating activities	228.0	212.3
Investing Activities
Capital expenditures	(222.9)	(172.8)
Acquisition of Fox Energy Company LLC	0	(391.6)
Grant received related to Crane Creek wind project	0	69.0
Other	4.3	4.1
Net cash used for investing activities	(218.6)	(491.3)
Financing Activities
Short-term debt, net	37.4	19.0
Borrowing on term credit facility	0	200.0
Repayment of long-term debt	0	(22.0)
Repayment of long-term debt to parent	(0.6)	(0.6)
Payment of dividends to parent	(83.9)	(81.5)
Equity contribution from parent	40.0	200.0
Return of capital to parent	0	35.0
Preferred stock dividend requirements	(2.3)	(2.3)
Other	(2.1)	1.3
Net cash (used for) provided by financing activities	(11.5)	278.9
Net change in cash and cash equivalents	(2.1)	(0.1)
Cash and cash equivalents at beginning of period	5.7	6.5
Cash and cash equivalents at end of period	3.6	6.4
Supplemental Cash Flow Information
Cash paid for interest	27.9	22.7
Cash received for income taxes	$ (5.1)	$ (2.4)