Income Taxes Deferred Tax Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred Tax Assets, Gross [Abstract]
Deferred interest	$ 42.5	$ 58.3
State net operating loss and credit carryforwards, net	20.6	18.0
Payroll and benefits	16.2	16.7
Deferred Tax Assets, Rent	6.4	1.2
Accounts receivable	5.4	4.2
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	1.6	10.3
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other	1.5	1.8
Deferred Tax Assets, Derivative Instruments	0.8	1.8
Charitable contribution carryforward	0.5	4.1
Deferred financing costs	0.2	2.3
Other	7.1	7.2
Total deferred tax assets	102.8	125.9
Deferred Tax Liabilities, Gross [Abstract]
Software and intangibles	486.2	551.4
Deferred Income	145.5	146.3
Property and equipment	25.0	29.3
Other	11.6	9.1
Total deferred tax liabilites	668.3	736.1
Deferred tax assets valuation allowance	0	0
Net deferred tax liabilities	565.5	610.2
Operating Loss Carryforwards [Line Items]
Undistributed Earnings of Foreign Subsidiaries	52.5
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	202.8
Tax Credit Carryforward, Amount	$ 17.0