Basis of Presentation (Impact of ASC 842) (Details) - USD ($) $ in Millions |
Sep. 30, 2019 |
Jan. 01, 2019 |
---|---|---|
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||
Operating lease ROU assets | $ 276.9 | |
Operating lease liabilities | $ 286.1 | |
Accounting Standards Update 2016-02 (ASC 842) | ||
New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||
Operating lease ROU assets | $ 274.0 | |
Operating lease liabilities | $ 282.7 |