Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended		12 Months Ended			24 Months Ended
	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010	Dec. 31, 2008	Dec. 31, 2005	Dec. 31, 2008	Nov. 30, 2010
Contingencies (Textuals) [Abstract]
Loss as a result of the September 2008 DTP ruling	$ 29.1		$ 0	$ 29.1	$ 0		$ 4.0
Waste disposal sites with potential liability under the Comprehensive Environmental Response, Compensation and Liability Act				40
Accrual for indicated environmental liabilities	12.3			12.3		28.0
Individual indicated environmental liabilities do not exceed X at any given site				3.0
Timeframe most environmental liabilities will be paid out		3 to 5
Percentage of Crystal Springs environmental settlements resolved in 2005								99.00%
Additional Lawsuits Filed									4
Number of plaintiffs included in four additional lawsuits in 2007 and 2008				340
Number of Lawsuits dismissed						1
Number of lawsuits in which company entered into settlement						3
Number of unfiled claimants settled in July 2010				2,700
Amount agreed to pay against settlement of unfiled claimants			28.0
First Settlement Payment Made										13.9
Final Settlement Payment Due		13.9
Pending asbestos related product liability claims	16,000			16,000		17,000
Claims resolved				900		7,700
Payment being made to a claimant by or on behalf of the company				157		245
Payment being made to a claimant by or on behalf of the company, percentage				17.40%		3.20%
Company paid in defense and indemnity in advance of insurers reimbursement	174.1			174.1
Cash and notes received from insurers	80.9			80.9
Outstanding balance to be fully recovered	93.2			93.2		120.6
Outstanding balance expected to be recovered in the next twelve months	29.9			29.9
Assets related to claims	55.2			55.2
Estimated liability for future claims resolutions	55.2			55.2
Insurance carrier reimbursement				100.00%
Estimated future settlement of existing claims [Member]
Assets:
Prepayments and other current assets	26.6			26.6		25.8
Other non-current assets	28.6			28.6		24.8
Total insurance assets	55.2			55.2		50.6
Liabilities:
Accounts payable and accrued expenses	26.6			26.6		25.8
Other non-current liabilities	28.6			28.6		24.8
Total accrued liabilities	$ 55.2			$ 55.2		$ 50.6