Income Taxes (Details) (USD $)	3 Months Ended			12 Months Ended
	Dec. 31, 2011 Rate	Dec. 31, 2010 Rate	Sep. 30, 2010 Rate	Dec. 31, 2012 Rate	Jun. 30, 2010 Rate
Income Taxes [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	$ 1,676,000			$ 2,389,000
Unrecognized Tax Benefits	26,500,000	21,400,000	18,500,000	28,100,000	17,600,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound				0
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound				9,400,000
Income Tax Sharing Agreement With Parent - Maximum Amount				650,000,000
Difference Between Amounts Paid Under Tax Sharing Arrangement and for Financial Reporting Purposes				800,000
Intercompany Taxes Payable	300,306,000			558,622,000
Effective Income Tax Rate, Continuing Operations	0.00%	0.00%	0.00%	0.00%	0.00%
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	$ 4,609,000			$ 21,146,000