Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	May 01, 2021	Mar. 31, 2021	Dec. 31, 2020
Contingencies And Commitments [Line Items]
Estimated sales tax and related penalties and interest		$ 14.1	$ 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		25.0
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		18.9
Uncollateralized Contingent Liability Under Letters of Credit and Bonds [Member]
Contingencies And Commitments [Line Items]
Contingent liability under letters of credit and other bonds		6.1
Collateralized Contingent Liability Under Financial Letters of Credit and Surety Bond [Member]
Contingencies And Commitments [Line Items]
Contingent liability under letters of credit and other bonds			6.0
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		23.5
Prepaid Expenses and Other Current Assets [Member] | 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		8.6
Other Assets [Member] | 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		14.9
Personal Injury Claims [Member]
Contingencies And Commitments [Line Items]
Personal injury claims recorded		15.0	14.7
Personal Injury Claims [Member] | Accrued Liabilities [Member]
Contingencies And Commitments [Line Items]
Personal injury claims recorded		5.1	5.9
Personal Injury Claims [Member] | Other Liabilities [Member]
Contingencies And Commitments [Line Items]
Personal injury claims recorded		$ 9.9	$ 8.8
Subsequent Event [Member]
Contingencies And Commitments [Line Items]
Deductible for marine liability coverage including personal injury claims, per first occurrence	$ 5.0
Range of deductible for liability coverage for personal injury claims, lower limit	5.0
Range of deductible for liability coverage for personal injury claims, upper limit	$ 100.0