Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Feb. 29, 2016	Mar. 31, 2024	Dec. 31, 2023
Contingencies And Commitments [Line Items]
Estimated sales tax and related penalties and interest		$ 12.4	$ 12.7
Range of deductible for liability coverage for personal injury claims, upper limit		100.0
Purchase Obligations		0.0
Revolving Credit Facility [Member]
Contingencies And Commitments [Line Items]
Contingent liability under letters of credit and other bonds		1.9
Maximum [Member]
Contingencies And Commitments [Line Items]
Range of deductible for liability coverage for personal injury claims, upper limit		2.5
Minimum [Member]
Contingencies And Commitments [Line Items]
Range of deductible for liability coverage for personal injury claims, upper limit		1.0
Personal Injury Claims [Member]
Contingencies And Commitments [Line Items]
Personal injury claims recorded		11.8	14.6
Total Contingent Liabilities Under Letters of Credit and Bonds [Member]
Contingencies And Commitments [Line Items]
Contingent liability under letters of credit and other bonds		14.0
Services Agreement [Member]
Contingencies And Commitments [Line Items]
Maturity of service arrangement	10 years
Annual payments due under service agreement		25.6
Total remaining payments due under service agreement		88.1
Cash Collateralized Contingent Liability Under Letters of Credit and Bonds [Member]
Contingencies And Commitments [Line Items]
Contingent liability under letters of credit and other bonds		12.1
Consumables and Capital Spare Parts [Member]
Contingencies And Commitments [Line Items]
Total remaining payments due under service agreement		37.0
Accrued Liabilities [Member] | Personal Injury Claims [Member]
Contingencies And Commitments [Line Items]
Personal injury claims recorded		6.2	7.4
Other Liabilities [Member] | Personal Injury Claims [Member]
Contingencies And Commitments [Line Items]
Personal injury claims recorded		$ 5.6	$ 7.2