Debt Obligations Debt Obligations Senior Secured Credit Facility (Details) (USD $) In Millions, unless otherwise specified														3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Period One [Member]	Mar. 31, 2014 Period Two [Member]	Mar. 31, 2014 Period Three [Member]	Mar. 31, 2014 Period Four [Member]	Mar. 31, 2014 Period Five [Member]	Mar. 31, 2014 Term Loan [Member]	Dec. 31, 2013 Term Loan [Member]	Jan. 10, 2014 Credit Facility [Domain]	Mar. 31, 2014 Secured Debt [Member] Revolving [Member]	Mar. 31, 2014 Secured Debt [Member] Term Loan [Member]	Jan. 10, 2014 Digital Insight [Member] Revolving Credit Facility [Member]	Mar. 31, 2014 Federal Funds Rate [Member] Secured Debt [Member]	Mar. 31, 2014 Base Rate [Member] Secured Debt [Member]	Mar. 31, 2014 Maximum [Member] Base Rate [Member] Secured Debt [Member]	Mar. 31, 2014 Maximum [Member] LIBOR [Member] Secured Debt [Member]	Mar. 31, 2014 Minimum [Member] Base Rate [Member] Secured Debt [Member]	Mar. 31, 2014 Minimum [Member] LIBOR [Member] Secured Debt [Member]	Mar. 31, 2014 Quarterly installments beginning September 30, 2014 [Member] Secured Debt [Member]	Mar. 31, 2014 Quarterly installments beginning September 30, 2015 [Member] Secured Debt [Member]	Mar. 31, 2014 Quarterly installments beginning September 30, 2016 [Member] Secured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument Covenant Consolidated Leverage Ratio			4.85	4.50	4.25	4.00	3.75
Long-term debt	$ 3,885	$ 3,320						$ 1,314	$ 1,087	$ 250			$ 300
Secured Credit Facility Maximum Borrowing Amount											850	1,370
Debt Instrument, Periodic Payment																				17	26	34
Debt Instrument, Basis Spread on Variable Rate														0.50%	1.00%
Debt Instrument, Margin for Base Rate Loans																1.25%	2.25%	0.25%	1.25%
Debt Instrument Covenant Interest Coverage Ratio			3.00	3.5
Available Additional Amount of Incremental Term Loan or Incremental Revolving Commitment	$ 150