Guarantor Condensed Consolidated Financial Statements Condensed Consolidating Statements of Cash Flows (Unaudited) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 34.8	$ 34.6
Depreciation and Amortization	67.0	65.4
Deferred Income Taxes	23.2	19.5
Amount of Postretirement Expense Greater Than Funding	0.5	(0.7)
Equity in Net Earnings of Subsidiaries	0	0
Loss on the Sale of Assets	5.9	0
Other, Net	13.2	5.5
Changes in Operating Assets and Liabilities	(114.7)	(136.2)
Net Cash Provided by (Used in) Operating Activities	29.9	(11.9)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	(59.3)	(32.9)
Proceeds Received from the Sale of Assets, Net of Selling Costs	70.7	0
Other, Net	(0.5)	(0.8)
Net Cash Provided by (Used in) Investing Activities	10.9	(33.7)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on Debt	(15.4)	(13.0)
Borrowings under Revolving Credit Facilities	267.3	409.7
Payments on Revolving Credit Facilities	(294.2)	(355.5)
Repurchase of Common Stock related to Share-Based Payments	(15.8)	(10.9)
Other, Net	(0.5)	4.1
Net Cash (Used in) Provided by Financing Activities	(58.6)	34.4
Effect of Exchange Rate Changes on Cash	0.3	(1.5)
Net Decrease in Cash and Cash Equivalents	(17.5)	(12.7)
Cash and Cash Equivalents at Beginning of Period	52.2	51.5
CASH AND CASH EQUIVALENTS AT END OF PERIOD	34.7	38.8
Parent
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	34.8	34.6
Depreciation and Amortization	0	0
Deferred Income Taxes	0	0
Amount of Postretirement Expense Greater Than Funding	0	0
Equity in Net Earnings of Subsidiaries	(34.8)	(34.6)
Loss on the Sale of Assets	0
Other, Net	0	0
Changes in Operating Assets and Liabilities	0	0
Net Cash Provided by (Used in) Operating Activities	0	0
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	0	0
Proceeds Received from the Sale of Assets, Net of Selling Costs	0
Other, Net	15.8	6.2
Net Cash Provided by (Used in) Investing Activities	15.8	6.2
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on Debt	0	0
Borrowings under Revolving Credit Facilities	0	0
Payments on Revolving Credit Facilities	0	0
Repurchase of Common Stock related to Share-Based Payments	(15.8)	(10.9)
Other, Net	0	4.7
Net Cash (Used in) Provided by Financing Activities	(15.8)	(6.2)
Effect of Exchange Rate Changes on Cash	0	0
Net Decrease in Cash and Cash Equivalents	0	0
Cash and Cash Equivalents at Beginning of Period	0	0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	0	0
Subsidiary Issuer
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	34.8	34.6
Depreciation and Amortization	57.5	53.9
Deferred Income Taxes	25.8	19.5
Amount of Postretirement Expense Greater Than Funding	0.3	1.0
Equity in Net Earnings of Subsidiaries	4.4	6.0
Loss on the Sale of Assets	0
Other, Net	10.8	4.1
Changes in Operating Assets and Liabilities	(41.3)	(128.3)
Net Cash Provided by (Used in) Operating Activities	92.3	(9.2)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	(41.2)	(29.5)
Proceeds Received from the Sale of Assets, Net of Selling Costs	0
Other, Net	(0.5)	(0.8)
Net Cash Provided by (Used in) Investing Activities	(41.7)	(30.3)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on Debt	(15.4)	(12.5)
Borrowings under Revolving Credit Facilities	236.6	356.4
Payments on Revolving Credit Facilities	(273.1)	(303.7)
Repurchase of Common Stock related to Share-Based Payments	0	0
Other, Net	0	(6.6)
Net Cash (Used in) Provided by Financing Activities	(51.9)	33.6
Effect of Exchange Rate Changes on Cash	0	0
Net Decrease in Cash and Cash Equivalents	(1.3)	(5.9)
Cash and Cash Equivalents at Beginning of Period	1.3	5.9
CASH AND CASH EQUIVALENTS AT END OF PERIOD	0	0
Combined Guarantor Subsidiaries
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	(3.9)	(0.2)
Depreciation and Amortization	0	1.0
Deferred Income Taxes	0	0
Amount of Postretirement Expense Greater Than Funding	0	(0.2)
Equity in Net Earnings of Subsidiaries	0.6	1.6
Loss on the Sale of Assets	5.9
Other, Net	1.3	0
Changes in Operating Assets and Liabilities	(74.6)	(2.2)
Net Cash Provided by (Used in) Operating Activities	(70.7)	0
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	0	0
Proceeds Received from the Sale of Assets, Net of Selling Costs	70.7
Other, Net	0	0
Net Cash Provided by (Used in) Investing Activities	70.7	0
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on Debt	0	0
Borrowings under Revolving Credit Facilities	0	0
Payments on Revolving Credit Facilities	0	0
Repurchase of Common Stock related to Share-Based Payments	0	0
Other, Net	0	0
Net Cash (Used in) Provided by Financing Activities	0	0
Effect of Exchange Rate Changes on Cash	0	0
Net Decrease in Cash and Cash Equivalents	0	0
Cash and Cash Equivalents at Beginning of Period	0	0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	0	0
Combined Nonguarantor Subsidiaries
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	(1.1)	(7.4)
Depreciation and Amortization	9.5	10.5
Deferred Income Taxes	(2.6)	0
Amount of Postretirement Expense Greater Than Funding	0.2	(1.5)
Equity in Net Earnings of Subsidiaries	0	0
Loss on the Sale of Assets	0
Other, Net	1.1	1.4
Changes in Operating Assets and Liabilities	(14.6)	(5.7)
Net Cash Provided by (Used in) Operating Activities	(7.5)	(2.7)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	(18.1)	(3.4)
Proceeds Received from the Sale of Assets, Net of Selling Costs	0
Other, Net	0	0
Net Cash Provided by (Used in) Investing Activities	(18.1)	(3.4)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on Debt	0	(0.5)
Borrowings under Revolving Credit Facilities	30.7	53.3
Payments on Revolving Credit Facilities	(21.1)	(51.8)
Repurchase of Common Stock related to Share-Based Payments	0	0
Other, Net	(0.5)	(0.2)
Net Cash (Used in) Provided by Financing Activities	9.1	0.8
Effect of Exchange Rate Changes on Cash	0.3	(1.5)
Net Decrease in Cash and Cash Equivalents	(16.2)	(6.8)
Cash and Cash Equivalents at Beginning of Period	50.9	45.6
CASH AND CASH EQUIVALENTS AT END OF PERIOD	34.7	38.8
Consolidating Eliminations
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	(29.8)	(27.0)
Depreciation and Amortization	0	0
Deferred Income Taxes	0	0
Amount of Postretirement Expense Greater Than Funding	0	0
Equity in Net Earnings of Subsidiaries	29.8	27.0
Loss on the Sale of Assets	0
Other, Net	0	0
Changes in Operating Assets and Liabilities	15.8	0
Net Cash Provided by (Used in) Operating Activities	15.8	0
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	0	0
Proceeds Received from the Sale of Assets, Net of Selling Costs	0
Other, Net	(15.8)	(6.2)
Net Cash Provided by (Used in) Investing Activities	(15.8)	(6.2)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on Debt	0	0
Borrowings under Revolving Credit Facilities	0	0
Payments on Revolving Credit Facilities	0	0
Repurchase of Common Stock related to Share-Based Payments	0	0
Other, Net	0	6.2
Net Cash (Used in) Provided by Financing Activities	0	6.2
Effect of Exchange Rate Changes on Cash	0	0
Net Decrease in Cash and Cash Equivalents	0	0
Cash and Cash Equivalents at Beginning of Period	0	0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 0	$ 0