Summary of Significant Accounting Policies - Depreciation and Amortization Expense (Details) (USD $) In Thousands, unless otherwise specified	11 Months Ended	12 Months Ended		11 Months Ended	12 Months Ended		11 Months Ended	12 Months Ended		11 Months Ended	12 Months Ended		1 Months Ended
	Dec. 31, 2010 Successor Company	Dec. 31, 2012 Successor Company	Dec. 31, 2011 Successor Company	Dec. 31, 2010 Successor Company Fixed assets and computer software	Dec. 31, 2012 Successor Company Fixed assets and computer software	Dec. 31, 2011 Successor Company Fixed assets and computer software	Dec. 31, 2010 Successor Company Depreciation of fixed assets	Dec. 31, 2012 Successor Company Depreciation of fixed assets	Dec. 31, 2011 Successor Company Depreciation of fixed assets	Dec. 31, 2010 Successor Company Amortization of computer software	Dec. 31, 2012 Successor Company Amortization of computer software	Dec. 31, 2011 Successor Company Amortization of computer software	Jan. 31, 2010 Predecessor Company	Jan. 31, 2010 Predecessor Company Fixed assets and computer software	Jan. 31, 2010 Predecessor Company Depreciation of fixed assets	Jan. 31, 2010 Predecessor Company Amortization of computer software
Property, Plant and Equipment [Line Items]
Total depreciation and amortization on fixed assets and computer software	$ 217,679	$ 418,652	$ 251,764	$ 50,677	$ 69,214	$ 64,700	$ 15,486	$ 16,188	$ 17,073	$ 35,191	$ 53,026	$ 47,627	$ 20,161	$ 4,604	$ 1,416	$ 3,188