Financial Instruments and Risk Management (Effect Of Derivative Instruments on the Condensed Consolidated Statements of Operations Derivatives in Fair Value Hedging Relationships) (Details) (Fair Value Hedging Relationships, USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	$ 2.4	$ 5.3	$ 50.2	$ (4.5)
Amount of (Loss) or Gain Recognized in Earnings on Hedged Items	6.1	(1.6)	(24.6)	15.1
Interest expense | Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	2.4	5.3	50.2	(4.5)
Interest expense | 2016 Senior Notes (1.800% coupon)
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) or Gain Recognized in Earnings on Hedged Items	1.0	(1.8)	0.1	0.8
Interest expense | 2018 Senior Notes (6.000% coupon)
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) or Gain Recognized in Earnings on Hedged Items	2.8	0.2	3.9	14.3
Interest expense | 2023 Senior Notes (3.125% coupon)
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) or Gain Recognized in Earnings on Hedged Items	$ 2.3	$ 0	$ (28.6)	$ 0