Condensed Consolidated Statements of Cash Flows (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities
Net income	$ 49.0	$ 46.9
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	146.3	129.7
Loss on extinguishment of debt	0	10.4
Provision for loss on receivables	10.6	10.8
Impairment loss	1.6	0
Noncash portion of interest expense	5.7	5.8
Deferred income tax provision	39.9	42.4
Pension and other postretirement benefits	(16.6)	(6.1)
Gain on sale of assets	(8.4)	0
Other, net	0.3	1.4
Changes in operating assets and liabilities, net of effects of acquisitions and dispositions
Increase in receivables	(6.5)	(11.8)
(Increase) decrease in inventory, materials, supplies, prepaids and other current assets	(6.4)	14.8
Decrease in accounts payable	(13.3)	(19.5)
Increase (decrease) in accrued and other current liabilities	4.5	(13.8)
Increase in other noncurrent assets	(1.7)	(2.4)
Decrease in other noncurrent liabilities	(6.5)	(4.0)
Net cash provided by operating activities	198.5	204.6
Cash flows from investing activities
Capital expenditures	(167.0)	(101.2)
Acquisitions, net of cash acquired	0	(526.7)
Proceeds from sale of assets	9.8	0
Other, net	(0.3)	0.5
Net cash used in investing activities	(157.5)	(627.4)
Cash flows from financing activities
Proceeds from issuance of long-term debt	0	1,353.4
Increase (decrease) in corporate credit and receivables facilities, net	0.4	(85.9)
Repayment of debt	(9.0)	(791.6)
Debt issuance costs	(0.8)	(32.9)
Dividends paid on preferred stock	(7.8)	(7.8)
Common stock repurchase	(10.0)	0
Other, net	(0.4)	(1.2)
Net cash (used in) provided by financing activities	(27.6)	434.0
Net increase in cash and cash equivalents	13.4	11.2
Cash and cash equivalents at beginning of year	77.3	23.0
Cash and cash equivalents at end of period	90.7	34.2
Noncash investing and financing transactions:
Acquisition of property by assuming debt and other noncurrent liabilities	32.5	17.7
Acquisition of property on account	$ 15.4	$ 13.9