Income Taxes (Schedule Of Tax Years Subject To Examination) (Details)	12 Months Ended
	Dec. 31, 2014
U.K. [Member] | Minimum [Member]
Income Tax Examination [Line Items]
Remaining years subject to examination	2013
U.K. [Member] | Maximum [Member]
Income Tax Examination [Line Items]
Remaining years subject to examination	2014
All Others [Member] | Minimum [Member]
Income Tax Examination [Line Items]
Remaining years subject to examination	2012
All Others [Member] | Maximum [Member]
Income Tax Examination [Line Items]
Remaining years subject to examination	2014