Revenue - Deferred Revenue (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Deferred revenue - current	$ 55.9	$ 44.7
Deferred revenue - noncurrent	17.3	15.0
Total deferred revenue	$ 73.2	59.7
Operating Segments | HST
Disaggregation of Revenue [Line Items]
Total deferred revenue		$ 17.9