Leases and Commitments - Balance Sheet Implication (Details) - USD ($) $ in Millions	Dec. 31, 2019	Jan. 01, 2019
Assets
Right-of-use assets	$ 175.4	$ 187.5
Finance right-of-use assets	2.4	3.2
Total right-of-use assets	177.8	190.7
Liabilities
Operating lease liabilities	45.7	45.4
Finance lease liabilities	1.0	1.1
Total current lease liabilities	46.7	46.5
Noncurrent
Operating lease liabilities	143.3	155.9
Finance lease liabilities	1.4	1.9
Total noncurrent lease liabilities	144.7	157.8
Total lease liability	$ 191.4	$ 204.3