Income Taxes (Details Textual) (USD $)	1 Months Ended	12 Months Ended
	Aug. 31, 2011	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Dec. 31, 2007	Aug. 18, 2011	Jun. 08, 2010	Dec. 31, 2006
Income Taxes (Textual) [Abstract]
Full valuation allowance on deferred tax assets		$ 10,800,000
Undistributed foreign earnings of non U.S. subsidiaries		2,700,000,000
Unrecognized tax benefits		31,300,000	26,200,000	42,800,000
Proposed disallowance by tax authorities for payment for services				130,000,000	130,000,000	130,000,000
Notice of Assessment of corporate excise tax including penalties and interest								103,500,000	38,900,000
Amount for settlement of exchange for payment of tax	7,000,000
Tax adjustments and settlement interest							5,000,000
Net interest expense (benefit)		12,900,000	700,000	3,100,000
Accrued payment of interest		3,900,000	29,400,000
Maximum [Member]
Tax Credit Carryforward [Line Items]
Residual U.S. tax liability		700,000,000
Minimum [Member]
Tax Credit Carryforward [Line Items]
Residual U.S. tax liability		600,000,000
General Business [Member] | Domestic country [Member]
Tax Credit Carryforward [Line Items]
Net operating losses credit carry forwards		27,200,000
Credit carry forwards		1,900,000
Tax credit carryforward, expiration dates		2022
General Business [Member] | State and local jurisdiction [Member]
Tax Credit Carryforward [Line Items]
Net Operating losses credit carry forwards, State		57,100,000
Tax credit carryforward, expiration dates		2012
Research [Member]
Tax Credit Carryforward [Line Items]
Credit carry forwards		101,600,000
Research [Member] | State and local jurisdiction [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforward, expiration dates		2012
Carrying balance of research and investment credit expire in 2012		$ 900,000