Leases (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Assets
Operating right-of-use lease assets	$ 243.1	$ 0.0
Finance lease assets	128.2
Total lease assets	371.3
Current
Operating	36.6	0.0
Finance	7.0
Long-term
Operating	226.0	$ 0.0
Finance	105.4
Total leased liabilities	$ 375.0