Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
Income Taxes (Textual) [Abstract]
Provision for valuation allowance	$ 1.5	$ 1.5
Unrecognized tax benefits, interest on income taxes accrued	31.8	31.8
Unrecognized tax benefits, income tax penalties accrued	24.3	24.3
No longer subject to examination for years prior to		2007
Statute of limitations to expire during next twelve months		2007 and 2008
Potential change in unrecognized tax benefits is reasonably possible during next twelve months, amount of unrecorded benefit tax positions	60.9	60.9
Portion of reduction in unrecognized tax benefits during next twelve months that reduces the income tax provision		88
Unrecognized tax benefits that would reduce the income tax provision	110	110
Uncertain Tax Positions [Member]
Income Taxes (Textual) [Abstract]
Unrecognized tax benefits relating to UTPs	$ 113	$ 113