CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities
Net income	$ 109.8	$ 109.5
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization expense	78.8	72.0
Recoveries and refunds of regulatory assets and liabilities	(9.9)	11.4
Bad debt expense	3.4	4.1
Pension and other postretirement expense	16.9	14.3
Pension and other postretirement contributions	(38.1)	(109.5)
Deferred income taxes and investment tax credits	60.3	23.4
Repayment of related party payable	0	(22.6)
Equity income, net of dividends	(1.2)	(0.8)
Termination of tolling agreement with Fox Energy Company LLC	(50.0)	0
Other	2.3	1.9
Changes in working capital
Collateral on deposit	0.8	(0.4)
Accounts receivable and accrued unbilled revenues	25.5	31.3
Inventories	0.9	10.2
Prepaid taxes	15.6	50.4
Other current assets	2.0	(1.8)
Accounts payable	(27.5)	(12.5)
Other current liabilities	22.7	29.6
Net cash provided by operating activities	212.3	210.5
Investing Activities
Capital expenditures	(172.8)	(126.0)
Proceeds from the sale or disposal of assets	1.4	2.3
Acquisition of Fox Energy Company LLC	(391.6)	0
Grant received related to Crane Creek Wind Project	69.0	0
Other	2.7	3.4
Net cash used for investing activities	(491.3)	(120.3)
Financing Activities
Short-term debt, net	19.0	0.6
Borrowing on term credit facility	200.0	0
Repayment of long-term debt	(22.0)	0
Repayment of long-term debt to parent	(0.6)	(0.5)
Payment of dividends to parent	(81.5)	(79.1)
Equity contribution from parent	200.0	40.0
Return of capital to parent	(35.0)	(50.0)
Preferred stock dividend requirements	(2.3)	(2.3)
Other	1.3	0.5
Net cash provided by (used for) financing activities	278.9	(90.8)
Net change in cash and cash equivalents	(0.1)	(0.6)
Cash and cash equivalents at beginning of period	6.5	5.5
Cash and cash equivalents at end of period	6.4	4.9
Integrys Energy Group
Financing Activities
Payment of dividends to parent	(81.5)
Return of capital to parent	$ (35.0)