Derivative Instruments (Schedule Of Notional Amounts Of Forward Contracts) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012
Commodity Forward Contracts [Member] | Copper [Member]
Derivative [Line Items]
Notional Amount	$ 130.0
Commodity Forward Contracts [Member] | Aluminum [Member]
Derivative [Line Items]
Notional Amount	9.9
Currency Forward Contracts [Member] | Mexican Peso [Member]
Derivative [Line Items]
Notional Amount	231.6
Currency Forward Contracts [Member] | Indian Rupee [Member]
Derivative [Line Items]
Notional Amount	42.8
Currency Forward Contracts [Member] | Australian Dollar [Member]
Derivative [Line Items]
Notional Amount	5.2
Currency Forward Contracts [Member] | Chinese Renminbi [Member]
Derivative [Line Items]
Notional Amount	41.4
Currency Forward Contracts [Member] | Thai Baht [Member]
Derivative [Line Items]
Notional Amount	$ 1.0