Leases - Supplemental Cash Flow and Other Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
Supplemental Cash Flow and Other Information [Line Items]
Operating Lease, Weighted Average Remaining Lease Term	8 years 10 months 15 days	8 years 10 months 15 days
Finance Lease, Weighted Average Remaining Lease Term	9 years 6 months	9 years 6 months
Operating Lease, Payments	$ 179.1
Finance Lease, Interest Payment on Liability		$ 0.5
Payments on financing leases		0.4
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability		$ 1,125.4	$ 0.0
Operating Lease, Weighted Average Discount Rate, Percent	7.92%	7.92%
Finance Lease, Weighted Average Discount Rate, Percent	6.83%	6.83%
Adjustments for New Accounting Pronouncement [Member]
Supplemental Cash Flow and Other Information [Line Items]
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 286.0