Income Taxes (Schedule Of Effective Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Tax provision based on the federal statutory rate	35.00%	35.00%	35.00%
Release of valuation allowances	(19.20%)	(5.90%)
Use of valuation allowances against U.S. taxable income	(24.80%)	(33.00%)	(96.30%)
Deemed income related to foreign operations	0.70%	2.80%	109.30%
Non-deductible expenses	0.40%	0.30%	1.30%
Income not subject to tax	(2.00%)
State taxes, net of federal benefit, before valuation allowance	1.30%	2.80%	(1.40%)
Impact of foreign tax settlement			(2.70%)
Return to provision adjustments, foreign current and deferred balances	(0.70%)	0.40%	(2.30%)
Foreign income tax rate differential	(0.60%)	(2.30%)	(3.80%)
Other	0.70%	0.80%	1.40%
Effective tax rate	(9.20%)	0.90%	40.50%