General and Summary of Significant Accounting Policies New Accounting Pronouncements (Details) $ in Millions	Dec. 31, 2014 USD ($)
Current deferred tax asset, gross total [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ 4.7
Non-current deferred tax asset, gross total [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ 13.9