Contractual interest rate for funds borrowed, under the debt agreement.

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Debt - 2022 Notes - Additional Information (Detail) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jul. 22, 2020
Debt Instrument [Line Items]
Gain (loss) on retirement of debt		$ (5.5)	$ (17.7)	$ (0.2)
Two Thousand Twenty Two Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					11.00%
Principal amount of debt instrument repurchased	$ 57.6			11.6
Debt instruments senior notes retired	56.7			11.8
Two Thousand Twenty Two Senior Notes \| Other Nonoperating Income (Expense)
Debt Instrument [Line Items]
Gain (loss) on retirement of debt	$ 0.9			$ 0.2