Restructuring Costs (Credits), Net - Restructuring Liabilities Included in Company's Condensed Consolidated Balance Sheets (Detail) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	$ 9.1	$ 11.7
Total restructuring liabilities	9.1	11.8
Accrued and Other Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	9.1	11.7
Other Noncurrent Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, non-current	$ 0.0	$ 0.1