Income Taxes (Details)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes, Tax Rate [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%	(35.00%)	(35.00%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes	0.50%	0.30%
Effective Income Tax Rate Reconciliation, Tax Contingencies, State and Local	(1.20%)		(2.40%)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential	(63.70%)	(20.40%)	(20.00%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense	(1.90%)		0.50%
Effective Income Tax Rate Reconciliation, Tax Credits, Research	(3.40%)	(6.00%)	(1.30%)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance	(2.90%)	2.50%	5.10%
Effective Income Tax Rate Reconciliation, Disposition of Business	25.40%		(4.80%)
Effective Income Tax Rate Reconciliation, Tax Settlements			33.30%
Effective Income Tax Rate Reconciliation, Other Adjustments	(0.20%)	(2.80%)	1.80%
Reported tax rate	31.30%	0.20%	(21.60%)
Impairment of Goodwill [Member]
Income Taxes, Tax Rate [Line Items]
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses	38.00%	59.80%
Impairment of Intangible Assets [Member]
Income Taxes, Tax Rate [Line Items]
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses	5.70%	1.80%	1.20%