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SEGMENT REPORTING (Tables) | 12 Months Ended
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Dec. 31, 2020
Segment Reporting [Abstract] |
Reconciliation of Third Party Revenues to Direct Revenues | The following tables reconcile third-party revenues to direct revenues for the years ended December 31, 2020, 2019 and 2018 (in thousands):
| For the year ended December 31, 2020
| Environmental Services |  | Safety-Kleen |  | Corporate Items |  | Totals
Third-party revenues | $ | 2,004,081 |  |  | $ | 1,139,726 |  |  | $ | 290 |  |  | $ | 3,144,097 |
Intersegment revenues, net | 129,666 |  |  | (129,666) |  |  | — |  |  | — |
Corporate Items, net | 3,559 |  |  | 142 |  |  | (3,701) |  |  | — |
Direct revenues | $ | 2,137,306 |  |  | $ | 1,010,202 |  |  | $ | (3,411) |  |  | $ | 3,144,097 |
| For the year ended December 31, 2019
| Environmental Services |  | Safety-Kleen |  | Corporate Items |  | Totals
Third-party revenues | $ | 2,092,363 |  |  | $ | 1,318,691 |  |  | $ | 1,136 |  |  | $ | 3,412,190 |
Intersegment revenues, net | 140,577 |  |  | (140,577) |  |  | — |  |  | — |
Corporate Items, net | 4,128 |  |  | 15 |  |  | (4,143) |  |  | — |
Direct revenues | $ | 2,237,068 |  |  | $ | 1,178,129 |  |  | $ | (3,007) |  |  | $ | 3,412,190 |
| For the year ended December 31, 2018
| Environmental Services |  | Safety-Kleen |  | Corporate Items |  | Totals
Third-party revenues | $ | 2,003,843 |  |  | $ | 1,295,355 |  |  | $ | 1,105 |  |  | $ | 3,300,303 |
Intersegment revenues, net | 134,104 |  |  | (134,104) |  |  | — |  |  | — |
Corporate Items, net | 3,247 |  |  | 31 |  |  | (3,278) |  |  | — |
Direct revenues | $ | 2,141,194 |  |  | $ | 1,161,282 |  |  | $ | (2,173) |  |  | $ | 3,300,303 |
Reconciliation to Consolidated Statements of Income to Adjusted EBITDA | The following table presents Adjusted EBITDA information used by management by reported segment (in thousands):
| For the years ended December 31,
| 2020 |  | 2019 |  | 2018
Adjusted EBITDA: |  |  |  |  |
Environmental Services | $ | 519,960 |  |  | $ | 446,284 |  |  | $ | 380,856 |
Safety-Kleen | 229,172 |  |  | 282,378 |  |  | 282,029 |
Corporate Items | (193,830) |  |  | (188,345) |  |  | (171,880) |
Total | 555,302 |  |  | 540,317 |  |  | 491,005 |
Reconciliation to Consolidated Statements of Operations: |  |  |  |  |
Accretion of environmental liabilities | 11,051 |  |  | 10,136 |  |  | 9,806 |
Depreciation and amortization | 292,915 |  |  | 300,725 |  |  | 298,625 |
Income from operations | 251,336 |  |  | 229,456 |  |  | 182,574 |
Other expense (income), net | 290 |  |  | (2,897) |  |  | 4,510 |
Loss on early extinguishment of debt | — |  |  | 6,131 |  |  | 2,488 |
Loss (gain) on sale of businesses | 3,376 |  |  | (687) |  |  | — |
Interest expense, net of interest income | 73,120 |  |  | 78,670 |  |  | 81,094 |
Income from operations before provision for income taxes | $ | 174,550 |  |  | $ | 148,239 |  |  | $ | 94,482 |
PP&E and Intangible Assets by Segment | The following table presents assets by reported segment and in the aggregate (in thousands):
| December 31, 2020 |  | December 31, 2019
Property, plant and equipment, net |  |  |
Environmental Services | $ | 879,176 |  |  | $ | 939,352 |
Safety-Kleen | 555,894 |  |  | 555,310 |
Corporate Items | 90,228 |  |  | 93,489 |
Total property, plant and equipment, net | $ | 1,525,298 |  |  | $ | 1,588,151 |
Goodwill and Permits and other intangibles, net |  |  |
Environmental Services |  |  |
Goodwill | $ | 212,386 |  |  | $ | 212,531 |
Permits and other intangibles, net | 78,928 |  |  | 89,722 |
Total Environmental Services | 291,314 |  |  | 302,253 |
Safety-Kleen |  |  |
Goodwill | $ | 314,637 |  |  | $ | 312,482 |
Permits and other intangibles, net | 307,692 |  |  | 329,344 |
Total Safety-Kleen | 622,329 |  |  | 641,826 |
Total | $ | 913,643 |  |  | $ | 944,079 |
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas | As of December 31, 2020 and 2019, the Company had property, plant and equipment, net of depreciation and amortization and permits and other intangible assets, net of amortization in the following geographic locations (in thousands):
| December 31, 2020 |  | December 31, 2019
| Total |  | % of Total |  | Total |  | % of Total
Property, plant and equipment, net |  |  |  |  |  |  |
United States | $ | 1,246,758 |  |  | 81.7 | % |  | $ | 1,273,205 |  |  | 80.2 | %
Canada and other foreign | 278,540 |  |  | 18.3 |  |  | 314,946 |  |  | 19.8 |
Total property, plant and equipment, net | $ | 1,525,298 |  |  | 100.0 | % |  | $ | 1,588,151 |  |  | 100.0 | %
Permits and other intangibles, net |  |  |  |  |  |  |
United States | $ | 342,787 |  |  | 88.7 | % |  | $ | 372,609 |  |  | 88.9 | %
Canada and other foreign | 43,833 |  |  | 11.3 |  |  | 46,457 |  |  | 11.1 |
Total permits and other intangibles, net | $ | 386,620 |  |  | 100.0 | % |  | $ | 419,066 |  |  | 100.0 | %
Schedule of Total Assets by Geographical Area | The following table presents the total assets by geographical area (in thousands):
| December 31, 2020 |  | December 31, 2019 |  |
United States | $ | 3,447,811 |  |  | $ | 3,413,254 |  |  |
Canada and other foreign | 683,709 |  |  | 695,650 |  |  |
Total | $ | 4,131,520 |  |  | $ | 4,108,904 |  |  |

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