- New Accounting Pronouncements (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets	$ 373.9		$ 0.0
Operating lease liability	354.2
Operating lease liabilities, noncurrent	$ (243.7)		$ 0.0
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets		$ 378.8
Operating lease liability		378.8
Lease deposits		25.4
Operating lease liabilities, noncurrent		$ 25.4