Earnings (Loss) Per Share and Shareholder’s Equity (Schedule Of Reconciliation Of The Numerator And Denominator Of The Basic And Diluted Earnings (Loss) Per Share (EPS) Computations) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share
Basic									98.1	100.7	103.3
Stock-based compensation arrangements									0.8	1.0	1.2
Convertible Debt, Share									5.8	4.5	4.7
Diluted EPS									104.7	106.2	109.2
Income from continuing operations	$ 42.6	$ 57.6	$ 29.0	$ 39.3	$ 48.0	$ 30.0	$ 24.9	$ 13.7	$ 168.4	$ 116.5	$ 58.5
Income from continuing operations, Diluted EPS									$ 168.4	$ 116.5	$ 58.5
Income (loss) from continuing operations, per basic share	$ 0.44	$ 0.59	$ 0.29	$ 0.40	$ 0.48	$ 0.30	$ 0.25	$ 0.14	$ 1.72	$ 1.16	$ 0.57
Stock-based compensation arrangements continuing operations, per share									(0.03)	(0.02)	(0.01)
Convertible debt continuing operation, per share									(0.09)	(0.04)	(0.02)
Income (loss) from continuing operations, per diluted share	0.41	0.55	0.28	0.37	0.46	0.28	0.23	0.13	$ 1.60	$ 1.10	$ 0.54
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest									$ 0.6	$ 3.5	$ 2.4
Income (loss) from discontinued operations, Diluted EPS									$ 0.6	$ 3.5	$ 2.4
Income (loss) from discontinued operations, per basic share	0.00	0.00	0.00	0.00	0.00	0.03	0.00	0.00	$ 0.01	$ 0.03	$ 0.02
Stock-based compensation arrangements discontinued operations, per share									0.00	0.00	0.00
Convertible Debt, Discontinued Operations, Per Share									0.00	0.00	0.00
Income (loss) from discontinued operations, per diluted share	0.00	0.01	0.00	0.00	0.00	0.03	0.00	0.00	0.01	0.03	0.02
Net basic earnings (loss) per share	0.44	0.59	0.29	0.40	0.48	0.33	0.25	0.14	$ 1.73	$ 1.19	$ 0.59
Stock-based compensation arrangements per share, total									(0.03)	(0.02)	(0.01)
Convertible debt discontinuing operation, per share, total									$ (0.09)	$ (0.04)	$ (0.02)
Net diluted earnings (loss) per share	$ 0.41	$ 0.56	$ 0.28	$ 0.37	$ 0.46	$ 0.31	$ 0.23	$ 0.13	$ 1.61	$ 1.13	$ 0.56