Leases - Summary of Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 319.2	$ 386.0
Finance lease assets	2.4	2.6
Total leased assets	321.6	388.6
Current operating lease liabilities	114.0	120.8
Current finance lease liabilities	0.9	0.2
Operating lease liabilities, noncurrent	214.0	246.3
Finance lease liabilities, noncurrent	3.2	3.3
Present value of lease liabilities	$ 332.1	$ 370.6