Other Financial Information - Total Inventory (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Schedule Of Inventory [Line Items]
Production and service materials	$ 719.0	$ 479.6
Finished goods	299.0	163.3
Total inventory	1,018.0	642.9
Inventory
Schedule Of Inventory [Line Items]
Total inventory	952.4	619.4
Other long-term assets
Schedule Of Inventory [Line Items]
Total inventory	$ 65.6	$ 23.5