Guarantor Condensed Consolidated Financial Statements Condensed Consolidating Statements of Cash Flows (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (Loss)	$ 58.7	$ 58.8
Depreciation and Amortization	134.8	139.4
Deferred Income Taxes	38.0	9.2
Amount of Postretirement Expense Greater (Less) Than Funding	2.3	(9.9)
Equity in Net Earnings of Subsidiaries	0	0
Other, Net	35.8	14.1
Changes in Operating Assets and Liabilities	(127.1)	(94.0)
Net Cash Provided by (Used in) Operating Activities	142.5	117.6
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	(80.9)	(70.8)
Acquisition of Business	0	(51.9)
Proceeds from Sales of Assets	12.9	0
Other, Net	(1.9)	(1.8)
Net Cash Used in Investing Activities	(69.9)	(124.5)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from Issuance or Modification of Debt	1,000.0	0
Net Proceeds from Issuance of Common Stock	0	238.0
Repurchase of Common Stock	0	(32.9)
Payments on Debt	(1,678.4)	(150.0)
Net Borrowings under Revolving Credit Facilities	388.0	2.2
Redemption and Debt Issuance Costs	(22.3)	0
Repurchase of Common Stock related to Share-Based Payments	(10.5)	0
Other, Net	9.3	0.2
Net Cash (Used in) Provided by Financing Activities	(313.9)	57.5
Effect of Exchange Rate Changes on Cash	0.5	1.9
Net (Decrease) Increase in Cash and Cash Equivalents	(240.8)	52.5
Cash and Cash Equivalents at Beginning of Period	271.8	138.7
CASH AND CASH EQUIVALENTS AT END OF PERIOD	31.0	191.2
Parent
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (Loss)	58.7	58.8
Depreciation and Amortization	0	0
Deferred Income Taxes	0	0
Amount of Postretirement Expense Greater (Less) Than Funding	0	0
Equity in Net Earnings of Subsidiaries	(58.7)	(58.8)
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
Acquisition of Business		0
Proceeds from Sales of Assets	0
Other, Net	0	(204.8)
Net Cash Used in Investing Activities	0	(204.8)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from Issuance or Modification of Debt	0
Net Proceeds from Issuance of Common Stock		238.0
Repurchase of Common Stock		(32.9)
Payments on Debt	0	0
Net Borrowings under Revolving Credit Facilities	0	0
Redemption and Debt Issuance Costs	0
Repurchase of Common Stock related to Share-Based Payments	(10.5)
Other, Net	10.5	(0.3)
Net Cash (Used in) Provided by Financing Activities	0	204.8
Effect of Exchange Rate Changes on Cash	0	0
Net (Decrease) Increase 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 (Loss)	58.7	58.8
Depreciation and Amortization	113.8	125.2
Deferred Income Taxes	37.5	11.2
Amount of Postretirement Expense Greater (Less) Than Funding	3.0	(7.4)
Equity in Net Earnings of Subsidiaries	2.2	(23.0)
Other, Net	35.0	13.5
Changes in Operating Assets and Liabilities	(103.4)	(67.1)
Net Cash Provided by (Used in) Operating Activities	146.8	111.2
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	(69.1)	(64.1)
Acquisition of Business		(51.9)
Proceeds from Sales of Assets	12.9
Other, Net	(1.9)	(1.8)
Net Cash Used in Investing Activities	(58.1)	(117.8)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from Issuance or Modification of Debt	1,000.0
Net Proceeds from Issuance of Common Stock		0
Repurchase of Common Stock		0
Payments on Debt	(1,678.4)	(150.0)
Net Borrowings under Revolving Credit Facilities	384.7	0
Redemption and Debt Issuance Costs	(22.3)
Repurchase of Common Stock related to Share-Based Payments	0
Other, Net	(1.2)	205.3
Net Cash (Used in) Provided by Financing Activities	(317.2)	55.3
Effect of Exchange Rate Changes on Cash	0	0
Net (Decrease) Increase in Cash and Cash Equivalents	(228.5)	48.7
Cash and Cash Equivalents at Beginning of Period	228.9	107.1
CASH AND CASH EQUIVALENTS AT END OF PERIOD	0.4	155.8
Combined Guarantor Subsidiaries
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (Loss)	2.1	5.2
Depreciation and Amortization	2.0	1.4
Deferred Income Taxes	0	(2.0)
Amount of Postretirement Expense Greater (Less) Than Funding	0.2	0
Equity in Net Earnings of Subsidiaries	1.8	(0.6)
Other, Net	0	0
Changes in Operating Assets and Liabilities	(5.9)	(3.5)
Net Cash Provided by (Used in) Operating Activities	0.2	0.5
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	(0.2)	(0.5)
Acquisition of Business		0
Proceeds from Sales of Assets	0
Other, Net	0	0
Net Cash Used in Investing Activities	(0.2)	(0.5)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from Issuance or Modification of Debt	0
Net Proceeds from Issuance of Common Stock		0
Repurchase of Common Stock		0
Payments on Debt	0	0
Net Borrowings under Revolving Credit Facilities	0	0
Redemption and Debt Issuance Costs	0
Repurchase of Common Stock related to Share-Based Payments	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) Increase 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 (Loss)	(6.1)	18.4
Depreciation and Amortization	19.0	12.8
Deferred Income Taxes	0.5	0
Amount of Postretirement Expense Greater (Less) Than Funding	(0.9)	(2.5)
Equity in Net Earnings of Subsidiaries	0	0
Other, Net	0.8	0.6
Changes in Operating Assets and Liabilities	(17.8)	(23.4)
Net Cash Provided by (Used in) Operating Activities	(4.5)	5.9
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital Spending	(11.6)	(6.2)
Acquisition of Business		0
Proceeds from Sales of Assets	0
Other, Net	0	0
Net Cash Used in Investing Activities	(11.6)	(6.2)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from Issuance or Modification of Debt	0
Net Proceeds from Issuance of Common Stock		0
Repurchase of Common Stock		0
Payments on Debt	0	0
Net Borrowings under Revolving Credit Facilities	3.3	2.2
Redemption and Debt Issuance Costs	0
Repurchase of Common Stock related to Share-Based Payments	0
Other, Net	0	0
Net Cash (Used in) Provided by Financing Activities	3.3	2.2
Effect of Exchange Rate Changes on Cash	0.5	1.9
Net (Decrease) Increase in Cash and Cash Equivalents	(12.3)	3.8
Cash and Cash Equivalents at Beginning of Period	42.9	31.6
CASH AND CASH EQUIVALENTS AT END OF PERIOD	30.6	35.4
Consolidating Eliminations
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (Loss)	(54.7)	(82.4)
Depreciation and Amortization	0	0
Deferred Income Taxes	0	0
Amount of Postretirement Expense Greater (Less) Than Funding	0	0
Equity in Net Earnings of Subsidiaries	54.7	82.4
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
Acquisition of Business		0
Proceeds from Sales of Assets	0
Other, Net	0	204.8
Net Cash Used in Investing Activities	0	204.8
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from Issuance or Modification of Debt	0
Net Proceeds from Issuance of Common Stock		0
Repurchase of Common Stock		0
Payments on Debt	0	0
Net Borrowings under Revolving Credit Facilities	0	0
Redemption and Debt Issuance Costs	0
Repurchase of Common Stock related to Share-Based Payments	0
Other, Net	0	(204.8)
Net Cash (Used in) Provided by Financing Activities	0	(204.8)
Effect of Exchange Rate Changes on Cash	0	0
Net (Decrease) Increase 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