Acquisitions (Final Price Allocations For Acquisitions) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Acquisitions [Abstract]
Accounts receivable	$ 6.0	$ 129.0	$ 2.4
Inventories	2.3	32.1
Prepaid expenses and other current assets	0.4	18.1
Property, plant and equipment and other long-term assets	16.8	127.3	9.2
Amortizable intangible assets	16.2	159.8	11.6
Goodwill	118.3	257.9	6.5
Accounts payable and accrued liabilities	(8.2)	(159.7)	(2.5)
Other noncurrent liabilities	(2.9)
Pension benefits and other long-term liabilities		(76.7)
Deferred taxes-net	14.2	(17.6)	(0.6)
Total purchase price-net of cash acquired	163.1	470.2
Less: fair value of Company's previously-held investments in Helium	13.9
Less: fair value of contingent consideration	6.8
Less: debt assumed		28.2
Net cash paid	$ 142.4	$ 442.0	$ 26.6