Income Taxes (Narrative) (Details) - Jun. 30, 2015 - USD ($) $ in Millions	Total
Income Tax Contingency [Line Items]
Unrecognized tax benefits relating to UTPs	$ 78.0
Unrecognized tax benefits, interest on income taxes accrued	6.8
Unrecognized tax benefits, income tax penalties accrued	$ 7.7
Closed tax years by major tax jurisdiction	2007
Potential change in unrecognized tax benefits during next twelve months	$ (8.5)
Unrecognized tax benefits that would reduce the income tax provision	$ 36.0
Internal Revenue Service (IRS) [Member]
Income Tax Contingency [Line Items]
Closed tax years by major tax jurisdiction	2008, 2009 and 2010
Statute of limitations to expire during next twelve months	2007 and 2011
State and Local Jurisdiction [Member]
Income Tax Contingency [Line Items]
Closed tax years by major tax jurisdiction	2008 and 2009
Statute of limitations to expire during next twelve months	2007, 2010 and 2011