Condensed Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating Activities
Net income	$ 13.1	$ 29.5
Adjustments to reconcile net income to net cash and cash equivalents provided by (used for) operating activities:
Earnings of non-consolidated affiliates	(0.4)	(0.4)
Losses on disposition of property, plant and equipment	0.3	0.2
Stock-based compensation	1.8	2.1
Depreciation and amortization	34.4	34.2
Deferred income taxes	(3.1)	6.0
Qualified pension plan contributions	(0.2)	(0.2)
Qualified pension plan income	(6.8)	(7.3)
Change in:
Receivables	(40.7)	(50.9)
Income taxes receivable/payable	7.4	(1.6)
Inventories	(6.0)	(1.1)
Other current assets	(7.1)	(1.1)
Accounts payable and accrued liabilities	(6.3)	(13.2)
Other assets	1.3	1.7
Other noncurrent liabilities	2.4	(4.8)
Other operating activities	0.3	0
Net operating activities	(9.6)	(6.9)
Investing Activities
Capital expenditures	(23.3)	(18.6)
Proceeds from disposition of property, plant and equipment	0.6	0.7
Proceeds from disposition of affiliated companies	2.2	0
Restricted cash activity	0	0.6
Other investing activities	(1.4)	0.7
Net investing activities	(21.9)	(16.6)
Financing Activities
Long-term debt repayments	(1.0)	(0.1)
Earn out payment - SunBelt	0	(14.8)
Common stock repurchased and retired	0	(14.7)
Stock options exercised	2.0	3.6
Excess tax benefits from stock-based compensation	0.3	0.5
Dividends paid	(15.5)	(15.9)
Deferred debt issuance costs	(14.3)	0
Net financing activities	(28.5)	(41.4)
Net decrease in cash and cash equivalents	(60.0)	(64.9)
Cash and cash equivalents, beginning of period	256.8	307.8
Cash and cash equivalents, end of period	196.8	242.9
Cash paid for interest and income taxes:
Interest	6.6	12.7
Income taxes, net of refunds	1.6	13.8
Non-cash investing activities:
Capital expenditures included in accounts payable and accrued liabilities	$ 2.4	$ 6.3