Leases Cash Flow Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019 USD ($)
Leases [Abstract]
Cash paid for operating leases included in operating activities	$ 32.5
Cash paid for finance leases included in operating activities	0.6
Cash paid for finance leases included in financing activities	1.8
Right-of-use assets obtained in exchange for operating lease liabilities	$ 7.3