Earnings Per Share (Schedule Of Calculation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Computation of Basic And Diluted Earnings Per Share [Line Items]
Income (Loss) from Continuing Operations Attributable to Parent	$ 373.0		$ 416.3		$ 390.5
Income from Discontinued Operations, Net of Tax, Attributable to Parent	4.8		58.3		10.8
Net Income	377.8		474.6		401.3
Dividends and equivalents for share-based awards expected to be forfeited	0.1		0.1		0.1
Net income for basic earnings per share	377.9		474.7		401.4
Effect of Preferred Securities	0	[1]	0	[1]	0	[1]
Net income for diluted earnings per share	377.9		474.7		401.4
Weighted-average shares outstanding	274.2		286.1		288.5
Share-based payment awards classified as participating securities	1.9		2.5		2.7
Denominator for basic earnings per share	276.1		288.6		291.2
Dilutive securities	2.8	[2]	3.2	[2]	2.4	[2]
Preferred Securities	0	[1]	0	[1]	0	[1]
Denominator for diluted earnings per share	278.9		291.8		293.6
Income (Loss) from Continuing Operations, Per Basic Share	$ 1.35		$ 1.44		$ 1.34
Income from Discontinued Operations, Net of Tax, Per Basic Share	$ 0.02		$ 0.20		$ 0.04
Earnings Per Share, Basic	$ 1.37		$ 1.64		$ 1.38
Income (Loss) from Continuing Operations, Per Diluted Share	$ 1.34		$ 1.43		$ 1.33
Income from Discontinued Operations, Net of Tax, Per Diluted Share	$ 0.02		$ 0.20		$ 0.04
Earnings Per Share, Diluted	$ 1.35		$ 1.63		$ 1.37
Preferred Securities Underlying Convertible Subordinated Debt Antidilutive Disclosure					7.7
Antidilutive securities excluded from computation of EPS					4.5
Undistributed Earnings (Loss) Allocated to Participating Securities, Diluted	$ 2.5		$ 4.0		$ 3.5
Stock Options and Other Securities [Member]
Computation of Basic And Diluted Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of EPS	0.2		2.3		9.4

[1] The Preferred Securities were anti-dilutive during 2012. They were redeemed on July 16, 2012, and therefore, have been excluded from diluted earnings per share. Had the Preferred Securities been included in the diluted earnings per share calculation, net income for 2012 would be increased by $7.7 million, and weighted-average shares outstanding would be increased by 4.5 million.

[2] Dilutive securities include “in the money” options, non-participating restricted stock units and performance stock units. The weighted-average shares outstanding for 2014, 2013 and 2012 exclude the effect of approximately 0.2 million, 2.3 million and 9.4 million stock options and other securities, respectively, because such securities were anti-dilutive.