Commitments, Contingencies and Legal Proceedings - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Apr. 01, 2023
Commitment And Contingencies [Line Items]
Reserve for estimated losses under repurchase agreements	$ 2.0	$ 2.0	$ 2.5
Contingent repurchase obligation	297.1	$ 297.1
Guarantee obligations term		12 years
Letters of Credit [Member]
Commitment And Contingencies [Line Items]
Contingent obligation	34.0	$ 34.0
Long-term Debt [Member]
Commitment And Contingencies [Line Items]
Contingent obligation	12.6	12.6
Casualty Insurance Program [Member]
Commitment And Contingencies [Line Items]
Contingent obligation	21.1	21.1
Bonding Agreements [Member]
Commitment And Contingencies [Line Items]
Contingent obligation	0.3	0.3
Surety Bond [Member]
Commitment And Contingencies [Line Items]
Contingent obligation	$ 31.3	$ 31.3