Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Income Taxes (Details)

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Summary of Significant Accounting Policies - Income Taxes (Details)
$ in Millions
9 Months Ended
Sep. 30, 2021
USD ($)
Accounting Policies [Abstract]  
Total amount of unrecognized tax benefits relating to uncertain tax positions $ 40.6
Increase (decrease) in the total amount of unrecognized tax benefits relating to uncertain tax positions 7.4
Increase in reserves for uncertain tax positions expected to be taken in current year 5.0
Increase in reserves from uncertain tax positions from changes in prior year positions 2.4
Reasonably possible reduction to the balance of unrecognized tax benefits in succeeding 12 months $ 13.3