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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Property, Plant and Equipment [Line Items] |  |  |  |
Accounts receivable, net |  | $ 1,922,096,000 | $ 2,030,813,000 |
Allowance for credit losses |  | 18,031,000 | 14,466,000 |
Provision for credit losses |  | 3,269,000 | 2,628,000 | $ 2,123,000
Unrecognized income tax benefits |  | $ 0 | 0 |
Machinery and Equipment | Minimum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Estimated useful life |  | 3 years |  |
Machinery and Equipment | Maximum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Estimated useful life |  | 10 years |  |
Vehicles, Furniture and Fixtures, and Computer Hardware and Software | Minimum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Estimated useful life |  | 3 years |  |
Vehicles, Furniture and Fixtures, and Computer Hardware and Software | Maximum |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Estimated useful life |  | 7 years |  |
Buildings |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Estimated useful life |  | 25 years |  |
Other Current Liabilities |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Insurance liabilities, current |  | $ 48,200,000 | 48,300,000 |
Other Noncurrent Liabilities |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Insurance liabilities, noncurrent |  | 192,800,000 | 186,000,000.0 |
Prepaid Expenses and Other |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Anticipated insurance recoveries, current |  | 14,400,000 | 13,800,000 |
Other Assets |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Anticipated insurance recoveries, noncurrent |  | $ 54,300,000 | $ 50,900,000 |
Accounting Standards Update 2016-13 [Member] |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Cumulative effect on retained earnings, net of tax | $ 2,300,000 |  |  |
Cumulative effect on retained earnings, tax | $ 900,000 |  |  |

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