Leases - Weighted Average (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Operating lease right-of-use assets obtained in exchange for new lease liabilities	$ 41.2
Finance lease right-of-use assets obtained in exchange for new lease liabilities	$ 39.6
Weighted-average remaining lease term (in years):
Operating leases	5 years 1 month 6 days
Finance leases	19 years 7 months 6 days
Weighted-average discount rate:
Operating leases	6.50%
Finance leases	6.53%