Nature Of Operations And Significant Accounting Policies (Schedule Of Changes To Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Balance at beginning of period	$ 1,191.3	$ 1,249.3
Disposals	0.0	0.8
Goodwill, Purchase Accounting Adjustments	0.0	(13.9)
Currency translation	(23.4)	(43.3)
Balance at end of period	$ 1,167.9	1,191.3
MEI Conlux Holdings [Member]
Goodwill [Line Items]
Proceeds Received Related To Adjustment Of Working Capital		6.1
Goodwill, Purchase Accounting Adjustments		$ 7.8