CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Activities
Net income	$ 178.6	$ 149.6	$ 241.7
Adjustments to reconcile net income to net cash and cash equivalents provided by (used for) operating activities:
Gain on remeasurement of investment in SunBelt	0	0	(181.4)
Earnings of non-consolidated affiliates	(2.8)	(3.0)	(9.6)
Gain on disposition of non-consolidated affiliate	(6.5)	0	0
Gains on disposition of property, plant and equipment	(0.4)	(2.1)	(6.2)
Stock-based compensation	8.8	6.2	5.8
Depreciation and amortization	135.3	110.9	99.3
Deferred taxes	12.4	42.5	92.6
Qualified pension plan contributions	(1.0)	(0.9)	(0.9)
Qualified pension plan income	(24.1)	(24.8)	(26.4)
Change in assets and liabilities:
Receivables	18.9	1.2	(26.2)
Income taxes receivable/payable	0.4	0.1	5.0
Inventories	8.6	17.9	(17.0)
Other current assets	0.7	(0.1)	0.6
Accounts payable and accrued liabilities	1.0	(0.7)	15.6
Other assets	1.3	0.3	(0.2)
Other noncurrent liabilities	(14.5)	(17.9)	25.6
Other operating activities	0.3	0	(2.4)
Net operating activities	317.0	279.2	215.9
Investing Activities
Capital expenditures	(90.8)	(255.7)	(200.9)
Business acquired in purchase transaction, net of cash acquired	0	(310.4)	(123.4)
Proceeds from sale/leaseback of equipment	35.8	4.4	3.2
Proceeds from disposition of property, plant and equipment	4.6	8.6	7.9
Distributions from affiliated companies, net	1.5	1.3	1.9
Restricted cash activity, net	7.7	39.8	50.3
Other investing activities	(2.6)	(0.4)	1.4
Net investing activities	(43.8)	(512.4)	(259.6)
Financing Activities
Long-Term Debt Borrowings	0	200.0	36.0
Long-Term Debt Repayments	(23.7)	(19.9)	(87.2)
Earn out payment - SunBelt	(17.1)	(15.3)	0
Common stock repurchased and retired	(36.2)	(3.1)	(4.2)
Stock options exercised	8.8	1.3	8.3
Excess tax benefits from stock-based compensation	1.6	0.7	1.0
Dividends paid	(64.0)	(64.1)	(64.0)
Deferred debt issuance costs	0	(6.0)	0
Net financing activities	(130.6)	93.6	(110.1)
Net increase (decrease) in cash and cash equivalents	142.6	(139.6)	(153.8)
Cash and cash equivalents, beginning of year	165.2	304.8	458.6
Cash and cash equivalents, end of year	307.8	165.2	304.8
Cash paid for interest and income taxes:
Interest	37.2	27.5	28.4
Income taxes, net of refunds	$ 61.3	$ 28.4	$ 41.5