Derivatives (Schedule Of Pretax Effects Of Derivative Instruments On The Income Statement, Fair Value Hedges) (Interest Expense, Net [Member], USD $) In Millions	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Interest Rate Swaps [Member]
Amount of gain (loss) recognized in income	$ 7.8	$ 21.2	$ (0.8)	$ 35.6
Fixed Rate Debt [Member]
Amount of gain (loss) recognized in income	$ (7.8)	$ (21.2)	$ 0.8	$ (35.6)

Amount of unrealized gain (loss) included in earnings for the period related to the fair value of the hedged item in an interest rate fair value hedge, which was offset by the gain (loss) on the hedging instrument to the extent that the fair value hedge is determined to be effective.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 45
-Subparagraph a(1)

Name:	us-gaap_IncreaseDecreaseInFairValueOfHedgedItemInInterestRateFairValueHedge
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration