Accrued Expenses And Other Current Liabilities (Schedule Of Accrued Expenses & Other Current Liabilities Footnote) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) item	Dec. 31, 2014 item
Segment Reporting Information [Line Items]
Individual Items Accounting For More Than Five Percent Of Balance Of Accrued Expenses | item	0	0
Percent Of Decision Point On Reporting Individual Items In Accrued Expenses	5.00%	5.00%
South Africa [Member]
Segment Reporting Information [Line Items]
Accrued loss on disposal associated with foreign currency translation adjustments | $	$ 6.7