Leases - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2019	Mar. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	$ 122.1
Total lease liabilities	$ 139.3
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets		$ 124.6
Total lease liabilities		$ 137.3