Other Costs (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010
Notes to Financial Statements [Abstract]
Employee severance	$ 0		$ 0		$ 5.8		$ 9.5
NATCO acquisition integration costs	0		5.7		0		18.5
BOP litigation	13.2		4.1		35.5		6.8
Mark-to-market impact on currency derivatives	6.4	[1]	0	[1]	6.4	[1]	0	[1]
Acquisition, refinancing and other restructuring costs	14.6	[2]	0.6	[2]	15.5	[2]	4.3	[2]
Total other costs	34.2		10.4		63.2		39.1
Derivative Instruments, Gain (Loss) [Line Items]
Convertible debentures retirement costs	(21.6)		(1.2)		(21.0)		7.7
Equity Call Option [Member] | Other Costs [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Convertible debentures retirement costs	$ (13.8)		$ 0		$ (12.2)		$ 0
Convertible debenture repaid, stated rate of interest (in hundredths)	2.50%		2.50%		2.50%		2.50%

[1] These derivatives have not been designated as accounting hedges.

[2] Includes $13.8 million and $12.2 million of costs for the three and nine months ended September 30, 2011, respectively, associated with retiring the 2.5% convertible debentures.