Equity and Accumulated Other Comprehensive Income (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
Common stock authorized, shares	200,000,000
Preferred stock authorized, shares	25,000,000
Statement Equity Components [Line Items]
Accumulated other comprehensive income (loss)	$ (286.4)	$ (340.2)	$ (263.4)
Company Common Shareholders [Member]
Statement Equity Components [Line Items]
Foreign currency translation adjustment	(228.2)	(275.6)
Pension adjustments, net of tax	(58.2)	(64.6)
Accumulated other comprehensive income (loss)	(286.4)	(340.2)
Noncontrolling Interest [Member]
Statement Equity Components [Line Items]
Foreign currency translation adjustment	(13.0)	(13.5)
Pension adjustments, net of tax	(1.3)	(1.5)
Accumulated other comprehensive income (loss)	$ (14.3)	$ (15.0)