Condensed Statements of Cash Flows (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating Activities
Net income	$ 175.8	$ 31.0
Adjustments to reconcile net income to net cash and cash equivalents provided by (used for) operating activities:
Gain on remeasurement of investment in SunBelt	(181.4)	0
Earnings of non-consolidated affiliates	(7.7)	(11.2)
Other operating income - gains on disposition of property, plant and equipment	(0.8)	(1.6)
Stock-based compensation	2.9	3.5
Depreciation and amortization	48.6	43.2
Deferred income taxes	88.7	6.3
Qualified pension plan contributions	(0.5)	(4.9)
Qualified pension plan income	(12.7)	(12.3)
Common stock issued under employee benefit plans	0	0.7
Change in assets and liabilities:
Receivables	(95.5)	(28.5)
Income taxes receivable	1.6	3.7
Inventories	(22.4)	(39.2)
Other current assets	(5.0)	(3.3)
Accounts payable and accrued liabilities	25.3	5.7
Other assets	(0.8)	0.2
Other noncurrent liabilities	3.6	0.1
Other operating activities	(2.2)	0.3
Net operating activities	17.5	(6.3)
Investing Activities
Capital expenditures	(63.4)	(41.7)
Business acquired in purchase transaction, net of cash acquired	(123.4)	0
Proceeds from disposition of property, plant and equipment	2.2	2.9
Distributions from affiliated companies, net	1.2	0.3
Restricted cash activity	4.2	0
Other investing activities	2.3	(1.4)
Net investing activities	(176.9)	(39.9)
Financing Activities
Issuance of common stock	0	5.1
Stock options exercised	7.3	2.4
Excess tax benefits from stock options exercised	2.0	0.1
Dividends paid	(32.0)	(31.5)
Net financing activities	(22.7)	(23.9)
Net decrease in cash and cash equivalents	(182.1)	(70.1)
Cash and cash equivalents, beginning of period	458.6	458.5
Cash and cash equivalents, end of period	276.5	388.4
Cash paid for interest and income taxes:
Interest	12.2	12.5
Income taxes, net of refunds	15.3	0.5
Non-cash investing activities:
Capital expenditures included in accounts payable and accrued liabilities	$ (3.5)	$ 9.2