Income Taxes (Schedule Of Tax Years Open To Examination By Jurisdiction) (Details)	9 Months Ended
	Sep. 30, 2011
U.S. IRS [Member]
Income Tax Contingency [Line Items]
Open tax years by major tax jurisdiction	2007 — 2010
Inland Revenue U.K [Member]
Income Tax Contingency [Line Items]
Open tax years by major tax jurisdiction	2009 — 2010
Irish Revenue Commissioners [Member]
Income Tax Contingency [Line Items]
Open tax years by major tax jurisdiction	2006 — 2010
Swiss Federal Tax Administration [Member]
Income Tax Contingency [Line Items]
Open tax years by major tax jurisdiction	2008 — 2010
Inland Revenue Department Hong Kong [Member]
Income Tax Contingency [Line Items]
Open tax years by major tax jurisdiction	2009 — 2010
Inland Revenue Department Singapore [Member]
Income Tax Contingency [Line Items]
Open tax years by major tax jurisdiction	2010