Derivative Financial Instruments (Schedule Of Notional Amounts Of Outstanding Derivative Positions) (Details) - Sep. 30, 2015 € in Millions, £ in Millions, SGD in Millions, RUB in Millions, NOK in Millions, MYR in Millions, CAD in Millions, BRL in Millions, AUD in Millions, $ in Millions	USD ($)	BRL	NOK	SGD	MYR	EUR (€)	AUD	CAD	GBP (£)	RUB
Foreign Exchange Forward | Australia, Dollars | Notional Amount Bought
Derivative
Derivative, notional amount	$ 24.9						AUD 35.4
Foreign Exchange Forward | Brazilian real | Notional Amount Bought
Derivative
Derivative, notional amount	104.1	BRL 428.4
Foreign Exchange Forward | British pound | Notional Amount Bought
Derivative
Derivative, notional amount	86.5								£ 56.9
Foreign Exchange Forward | Canadian dollar | Notional Amount Sold
Derivative
Derivative, notional amount	125.2							CAD 167.7
Foreign Exchange Forward | Euro | Notional Amount Bought
Derivative
Derivative, notional amount	169.6					€ 151.6
Foreign Exchange Forward | Malaysia, Ringgits | Notional Amount Bought
Derivative
Derivative, notional amount	42.6				MYR 187.4
Foreign Exchange Forward | Norwegian krone | Notional Amount Bought
Derivative
Derivative, notional amount	255.1		NOK 2,173.3
Foreign Exchange Forward | Russian ruble | Notional Amount Bought
Derivative
Derivative, notional amount	20.1									RUB 1,332.7
Foreign Exchange Forward | Singapore dollar | Notional Amount Bought
Derivative
Derivative, notional amount	154.9			SGD 220.7
Foreign Exchange Forward | U.S. dollar | Notional Amount Sold
Derivative
Derivative, notional amount	954.6
Embedded Derivative Financial Instruments | Brazilian real | Notional Amount Sold
Derivative
Derivative, notional amount	24.7	BRL 101.6
Embedded Derivative Financial Instruments | Euro | Notional Amount Bought
Derivative
Derivative, notional amount	15.8					€ 14.1
Embedded Derivative Financial Instruments | Norwegian krone | Notional Amount Sold
Derivative
Derivative, notional amount	15.4		NOK 130.8
Embedded Derivative Financial Instruments | U.S. dollar | Notional Amount Bought
Derivative
Derivative, notional amount	$ 28.5