Leases - Other Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019 USD ($)
Leases [Abstract]
Cash paid for operating leases within cash flows from operating activities	$ 55.1
Right-of-use assets obtained in exchange for operating lease liabilities	$ 26.4
Weighted-average remaining lease term of operating leases (in years)	8 years 2 months 12 days
Weighted-average discount rate for operating leases (in hundredths)	8.50%