Derivative Instruments And Hedging Activities (Outstanding Foreign Currency Forward Contracts That Were Not Designated As Hedging Instruments As Of The Balance Sheet Date) (Details) (USD $) In Millions	Sep. 30, 2011
Australian Dollar [Member] | Sold [Member]
Derivative [Line Items]
Notional Value	$ 17.1
Australian Dollar [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value	0
British Pound [Member] | Sold [Member]
Derivative [Line Items]
Notional Value	0
British Pound [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value	18.4
Danish Krone [Member] | Sold [Member]
Derivative [Line Items]
Notional Value	1.4
Danish Krone [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value	0
Euro [Member] | Sold [Member]
Derivative [Line Items]
Notional Value	137.1
Euro [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value	14.9
New Zealand Dollar [Member] | Sold [Member]
Derivative [Line Items]
Notional Value	3.1
New Zealand Dollar [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value	0
Norwegian Krone [Member] | Sold [Member]
Derivative [Line Items]
Notional Value	7.4
Norwegian Krone [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value	0
Japanese Yen [Member] | Sold [Member]
Derivative [Line Items]
Notional Value	39.4
Japanese Yen [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value	0
Swedish Krone [Member] | Sold [Member]
Derivative [Line Items]
Notional Value	2.4
Swedish Krone [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value	0
Swiss Franc [Member] | Sold [Member]
Derivative [Line Items]
Notional Value	0
Swiss Franc [Member] | Purchased [Member]
Derivative [Line Items]
Notional Value	34.6
Sold [Member]
Derivative [Line Items]
Notional Value	207.9
Purchased [Member]
Derivative [Line Items]
Notional Value	$ 67.9