Basis of Presentation New Accounting Standards (Details) $ in Millions	Oct. 01, 2016 USD ($)
Accounting standards update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 7.8
Accounting standards update 2016-09, windfall tax benefit component [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption	8.1
Accounting standards update 2016-09, forfeiture rate component [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (0.3)