Divestitures (Schedule Of Results Included In Discontinued Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012		Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 0	$ 0		$ 0	$ 128.8
Income before tax - Operations	0	0	[1]	0	23.7
Gain on disposition, before tax	1.1	(3.5)		(6.6)	98.5	99.8
Income before income taxes	1.1	(3.5)		(6.6)	122.2
Tax expense related to operations	0	0		0	(32.5)
Tax expense related to gain on disposition	(4.6)	(1.1)		(8.6)	84.1	83.6
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	5.7	(2.4)		2.0	70.6
Cost Allocated for Discontinued Business Segment Included in Continued Operations					$ 8.8

[1] (1)Excludes costs previously allocated to Information Management that did not meet the criteria for presentation within discontinued operations of $8.8 for the nine months ended September 30, 2012.