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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Property, Plant and Equipment [Line Items] |  |  |
Accounts receivable, net | $ 1,773,620,000 | $ 1,607,922,000 |
Allowance for doubtful accounts | 15,361,000 | 17,230,000 |
Provision for doubtful accounts | 2,123,000 | 7,264,000 | $ 6,194,000
Non-cash expense for impairment of property, plant and equipment | $ 0 | 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 | $ 44,600,000 | 47,300,000 |
Other Noncurrent Liabilities |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Insurance liabilities, noncurrent | 179,100,000 | 173,200,000 |
Prepaid Expenses and Other |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Anticipated insurance recoveries, current | 12,600,000 | 14,900,000 |
Other Assets |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Anticipated insurance recoveries, noncurrent | 49,300,000 | $ 48,600,000 |
Accounting Standards Update 2016-02 [Member] | Minimum |  |  |
Property, Plant and Equipment [Line Items] |  |  |
New accounting pronouncement, effect of adoption | 200,000,000 |  |
Accounting Standards Update 2016-02 [Member] | Maximum |  |  |
Property, Plant and Equipment [Line Items] |  |  |
New accounting pronouncement, effect of adoption | $ 225,000,000 |  |

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