Quarterly report pursuant to Section 13 or 15(d)

Summary of Treasury Stock Activity (Detail)

v3.22.2.2
Summary of Treasury Stock Activity (Detail)
$ in Millions
9 Months Ended
Sep. 30, 2022
USD ($)
shares
Treasury Stock, Shares [Abstract]  
Beginning Balance, Shares | shares 5,350,000
Restricted stock withholdings | shares 240,000 [1]
Restricted stock forfeitures | shares 70,000.00
Ending Balance, Shares | shares 5,660,000
Beginning Balance, Cost | $ $ 91.1
Restricted stock withholdings | $ 4.1 [1]
Restricted stock forfeitures | $ 0.0
Ending Balance, Cost | $ $ 95.2
[1] Holdings withheld shares as a result of the election by certain employees to satisfy their tax liabilities upon vesting of restricted stock and restricted stock units. Holdings determined the number of shares to be withheld based upon market values of the common stock of Holdings on the vest dates, which ranged from $15.18 to $18.33 per share.