Summary of Significant Accounting Policies - Property and Equipment, Net by Geography (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	$ 155.8	$ 185.3
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	131.4	146.9
France
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	13.5	19.8
All other international
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	$ 10.9	$ 18.6