Derivative Financial Instruments (Notional Value Of Outstanding Cash Flow Hedge Contracts By Year Of Maturity And Net Unrealized (Loss) Gain Included In Accumulated Other Comprehensive Income) (Details) - USD ($)	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Net unrealized (loss) included in accumulated other comprehensive income (loss), net of taxes	$ (37,600,000)	$ (44,500,000)	$ (86,700,000)	$ (137,500,000)	$ (193,000,000)	$ (300,000,000)
Foreign Exchange Forward [Member]
Derivative [Line Items]
Net unrealized (loss) included in accumulated other comprehensive income (loss), net of taxes	(37,600,000)		(86,700,000)
Foreign Exchange Forward [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Notional value of contracts outstanding	2,730,000,000		2,460,000,000
Foreign Exchange Forward, Maturity 2015 [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Notional value of contracts outstanding	660,000,000		1,320,000,000
Foreign Exchange Forward, Maturity 2016 [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Notional value of contracts outstanding	1,020,000,000		720,000,000
Foreign Exchange Forward, Maturity 2017 [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Notional value of contracts outstanding	795,000,000		420,000,000
Foreign Exchange Forward, Maturity 2018 [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Notional value of contracts outstanding	$ 255,000,000		$ 0