Lease Disclosures Future minimum payments to be received as lessor under noncancelable direct financing leases (Details) $ in Millions	Jun. 30, 2019 USD ($)
Leases [Abstract]
2019 (remaining six months)	$ 7.9
2020	14.7
2021	11.6
2022	8.2
2023	3.6
Thereafter	3.8
Total minimum rents receivable	49.8
Less: unearned income	(10.0)
Total net investment in direct financing leases	39.8
Less: current portion	(11.2)
Long-term investment in direct financing leases	$ 28.6