CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating Activities
Net income	$ 72.1	$ 66.3
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization expense	51.2	47.9
Recoveries and refunds of regulatory assets and liabilities	(5.2)	7.6
Bad debt expense	1.5	2.2
Pension and other postretirement expense	11.3	10.5
Pension and other postretirement contributions	(37.8)	(109.3)
Deferred income taxes and investment tax credits	51.3	25.6
Repayment of related party payable	0	(22.6)
Equity income, net of dividends	(1.1)	(0.9)
Termination of tolling agreement with Fox Energy Company LLC	(50.0)	0
Other	(3.0)	(15.1)
Changes in working capital
Collateral on deposit	0.4	(0.9)
Accounts receivable and accrued unbilled revenues	10.3	24.4
Inventories	11.1	33.2
Prepaid taxes	(6.6)	34.7
Other current assets	4.1	5.3
Accounts payable	(26.9)	(17.7)
Other current liabilities	9.0	15.8
Net cash provided by operating activities	91.7	107.0
Investing Activities
Capital expenditures	(111.9)	(73.9)
Acquisition of Fox Energy Company LLC	(391.6)	0
Grant received related to Crane Creek Wind Project	69.0	0
Proceeds from the sale of property, plant, and equipment	0.9	1.7
Other	0.9	1.9
Net cash used for investing activities	(432.7)	(70.3)
Financing Activities
Borrowing on term credit facility	200.0	0
Short-term debt, net	51.8	(23.3)
Repayment of long-term debt to parent	(0.4)	(0.4)
Repayment of long-term debt	(22.0)	0
Payment of dividends to parent	(54.3)	(52.8)
Equity contribution from parent	200.0	40.0
Return of capital to parent	(35.0)	0
Preferred stock dividend requirements	(1.6)	(1.6)
Other	0.6	0.6
Net cash provided by (used for) financing activities	339.1	(37.5)
Net change in cash and cash equivalents	(1.9)	(0.8)
Cash and cash equivalents at beginning of period	6.5	5.5
Cash and cash equivalents at end of period	4.6	4.7
Integrys Energy Group
Financing Activities
Payment of dividends to parent	$ (54.3)