Segment and Geographic Information - Identifiable Assets (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Identifiable assets:
Total	$ 2,132.9	$ 1,954.7
United States
Identifiable assets:
Total	1,951.5	1,781.0
Canada
Identifiable assets:
Total	$ 181.4	$ 173.7

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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+ Details