Summary of Significant Accounting Policies and Basis of Presentation Fair Value of Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Bank debt [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial and nonfinancial liabilities, fair value		$ 6.0
Business acquisition obligations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial and nonfinancial liabilities, fair value	$ 3.2	$ 6.7