CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
OPERATING ACTIVITIES
Net income	$ 14.7	$ 148.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	15.6	15.5
Stock-based compensation	2.2	2.5
Excess tax benefit from stock-based compensation	(0.6)
Deferred income tax provision	4.3	31.8
Loss on retirement of bonds	2.4
Gain on sale of the Woodlands (Note 4)		(74.1)
Reclassification of cumulative translation adjustments related to investments in Canada (Note 3 and Note 4)		(87.9)
Loss on asset dispositions		0.1
Increase in working capital	(19.9)	(2.8)
Pension and other postretirement benefits	(3.5)	(4.1)
Other	(0.7)	(0.5)
NET CASH PROVIDED BY OPERATING ACTIVITIES	14.5	28.7
INVESTING ACTIVITIES
Capital expenditures	(12.9)	(4.7)
Net proceeds from sale of the Woodlands		78.0
Purchase of marketable securities	(3.7)
Other	0.6	0.5
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(16.0)	73.8
FINANCING ACTIVITIES
Proceeds from issuance of long-term debt	27.8
Debt issuance costs	(0.4)
Repayments of long-term debt	(75.9)	(68.6)
Short-term borrowings	8.1	4.7
Repayments of short-term debt	(2.4)	(9.3)
Proceeds from exercise of stock options	1.1	0.3
Excess tax benefit from stock-based compensation	0.6
Cash dividends paid	(3.3)	(2.9)
Other	(0.5)	(0.2)
NET CASH USED IN FINANCING ACTIVITIES	(44.9)	(76.0)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	0.1
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(46.3)	26.5
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	48.3	5.6
CASH AND CASH EQUIVALENTS, END OF PERIOD	2.0	32.1
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during period for interest, net of interest expense capitalized	8.5	9.8
Cash paid (received) during period for income taxes	1.6	(0.1)
Non-cash investing activities:
Liability for equipment acquired	$ 1.1	$ 0.8