Derivative Financial Instruments (Schedule Of Notional Amounts Of Outstanding Derivative Positions) (Details) - Jun. 30, 2015 € in Millions, £ in Millions, SGD in Millions, SFr in Millions, RUB in Millions, NOK in Millions, MYR in Millions, KWD in Millions, CAD in Millions, BRL in Millions, AUD in Millions, $ in Millions	CAD	BRL	MYR	SGD	RUB	NOK	EUR (€)	KWD	USD ($)	CHF (SFr)	GBP (£)	AUD
Foreign Exchange Forward | Australia, Dollars | Notional Amount Bought
Derivative
Derivative, notional amount									$ 24.6			AUD 31.9
Foreign Exchange Forward | Brazilian real | Notional Amount Bought
Derivative
Derivative, notional amount		BRL 167.5							53.4
Foreign Exchange Forward | British pound | Notional Amount Bought
Derivative
Derivative, notional amount									118.1		£ 75.0
Foreign Exchange Forward | Canadian dollar | Notional Amount Sold
Derivative
Derivative, notional amount	CAD 184.3								148.1
Foreign Exchange Forward | Euro | Notional Amount Bought
Derivative
Derivative, notional amount							€ 153.6		172.0
Foreign Exchange Forward | Kuwaiti dinar | Notional Amount Sold
Derivative
Derivative, notional amount								KWD 5.3	17.5
Foreign Exchange Forward | Malaysia, Ringgits | Notional Amount Bought
Derivative
Derivative, notional amount			MYR 85.8						22.7
Foreign Exchange Forward | Norwegian krone | Notional Amount Bought
Derivative
Derivative, notional amount						NOK 3,062.0			390.5
Foreign Exchange Forward | Russian ruble | Notional Amount Bought
Derivative
Derivative, notional amount					RUB 882.6				15.9
Foreign Exchange Forward | Singapore dollar | Notional Amount Bought
Derivative
Derivative, notional amount				SGD 138.0					102.5
Foreign Exchange Forward | Switzerland, Francs | Notional Amount Bought
Derivative
Derivative, notional amount									15.1	SFr 14.1
Foreign Exchange Forward | U.S. dollar | Notional Amount Sold
Derivative
Derivative, notional amount									934.8
Embedded Derivative Financial Instruments | Brazilian real | Notional Amount Sold
Derivative
Derivative, notional amount		BRL 56.4							18.0
Embedded Derivative Financial Instruments | Euro | Notional Amount Bought
Derivative
Derivative, notional amount							€ 13.6		15.2
Embedded Derivative Financial Instruments | Norwegian krone | Notional Amount Sold
Derivative
Derivative, notional amount						NOK 175.8			22.4
Embedded Derivative Financial Instruments | U.S. dollar | Notional Amount Bought
Derivative
Derivative, notional amount									$ 24.2