Commitment and Contingencies - Lease Assets and Lease Liabilities (Details) $ in Millions	Dec. 31, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Operating lease right-of-use assets	$ 78.0
Operating lease liabilities - current	22.2
Operating lease liabilities - long-term	61.8
Total lease liabilities	$ 84.0