Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	Feb. 29, 2016	Jun. 30, 2022	Dec. 31, 2021
Contingencies And Commitments [Line Items]
Estimated sales tax and related penalties and interest		$ 13.9	$ 13.7
Range of deductible for liability coverage for personal injury claims, upper limit		100.0
Purchase Obligations		0.0
Maximum [Member]
Contingencies And Commitments [Line Items]
Range of deductible for liability coverage for personal injury claims, upper limit		5.0
Minimum [Member]
Contingencies And Commitments [Line Items]
Range of deductible for liability coverage for personal injury claims, upper limit		1.0
Loss from Catastrophes [Member]
Contingencies And Commitments [Line Items]
Deductible for marine liability coverage including personal injury claims, per first occurrence		10.0
Range of deductible for liability coverage for personal injury claims, upper limit		100.0
Personal Injury Claims [Member]
Contingencies And Commitments [Line Items]
Personal injury claims recorded		14.2	13.5
Total Contingent Liabilities Under Letters of Credit and Bonds [Member]
Contingencies And Commitments [Line Items]
Contingent liability under letters of credit and other bonds		42.7
Services Agreement [Member]
Contingencies And Commitments [Line Items]
Maturity of service arrangement	10 years
Annual payments due under service agreement		24.0
Total remaining payments due under service agreement		137.2
Potentially Collateralized Contingent Liability Under Letters Of Credit and Bonds [Member]
Contingencies And Commitments [Line Items]
Contingent liability under letters of credit and other bonds		18.6
Uncollateralized Contingent Liability Under Letters of Credit and Bonds [Member]
Contingencies And Commitments [Line Items]
Contingent liability under letters of credit and other bonds		24.1
Accrued Liabilities [Member] | Personal Injury Claims [Member]
Contingencies And Commitments [Line Items]
Personal injury claims recorded		4.8	5.4
Other Liabilities [Member] | Personal Injury Claims [Member]
Contingencies And Commitments [Line Items]
Personal injury claims recorded		$ 9.4	$ 8.1