Leases - Supplemental Consolidated Balance Sheet information Related Operating Leases (Details) $ in Millions	Jun. 30, 2019 USD ($)
Leases [Abstract]
Operating lease right-of-use assets	$ 117.3
Accrued expenses and other current liabilities - Other	72.3
Long-term operating lease liabilities	86.6
Operating lease liabilities	$ 158.9
Weighted average remaining lease term (years)	4 years 4 months 24 days
Weighted average discount rate	3.40%