GUARANTOR AND NON-GUARANTOR SUBSIDIARIES (Income Statement) (Details) - USD ($) $ in Thousands |
3 Months Ended |
12 Months Ended |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
$ 858,204
|
$ 843,181
|
$ 849,140
|
$ 749,778
|
$ 747,403
|
$ 755,846
|
$ 752,788
|
$ 688,941
|
$ 3,300,303
|
$ 2,944,978
|
$ 2,755,226
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
594,857
|
580,685
|
583,584
|
546,425
|
526,690
|
519,595
|
519,803
|
496,585
|
2,305,551
|
2,062,673
|
1,932,857
|
Selling, general and administrative expenses |
|
|
|
|
|
|
|
|
503,747
|
456,648
|
422,015
|
Accretion of environmental liabilities |
|
|
|
|
|
|
|
|
9,806
|
9,460
|
10,177
|
Depreciation and amortization |
|
|
|
|
|
|
|
|
298,625
|
288,422
|
287,002
|
Goodwill impairment charge |
|
|
|
|
|
|
|
|
0
|
0
|
34,013
|
(Loss) income from operations |
41,485
|
65,745
|
64,353
|
10,991
|
27,935
|
47,663
|
46,744
|
5,433
|
182,574
|
127,775
|
69,162
|
Other (expense) income, net |
(4,061)
|
(996)
|
846
|
(299)
|
(3,305)
|
(432)
|
(833)
|
(1,549)
|
(4,510)
|
(6,119)
|
6,195
|
Loss on early extinguishment of debt |
|
(2,500)
|
|
|
|
(1,900)
|
(6,000)
|
|
(2,488)
|
(7,891)
|
0
|
Gain on sale of businesses |
|
|
|
|
|
|
31,700
|
|
0
|
30,732
|
16,884
|
Interest (expense) income, net |
|
|
|
|
|
|
|
|
(81,094)
|
(85,808)
|
(83,525)
|
Equity in earnings of subsidiaries, net of tax |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Intercompany interest income (expense) |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
(Loss) income before (benefit) provision for income taxes |
|
|
|
|
|
|
|
|
94,482
|
58,689
|
8,716
|
(Benefit) provision for income taxes |
|
|
|
|
|
|
|
|
28,846
|
(42,050)
|
48,589
|
Net income (loss) |
$ 16,431
|
$ 31,089
|
$ 30,747
|
$ (12,631)
|
$ 84,194
|
$ 12,058
|
$ 25,880
|
$ (21,393)
|
65,636
|
100,739
|
(39,873)
|
Other comprehensive loss |
|
|
|
|
|
|
|
|
(50,964)
|
41,919
|
40,566
|
Comprehensive income (loss) |
|
|
|
|
|
|
|
|
14,672
|
142,658
|
693
|
Reportable Legal Entities | Clean Harbors, Inc. |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Selling, general and administrative expenses |
|
|
|
|
|
|
|
|
347
|
0
|
85
|
Accretion of environmental liabilities |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Depreciation and amortization |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Goodwill impairment charge |
|
|
|
|
|
|
|
|
|
|
0
|
(Loss) income from operations |
|
|
|
|
|
|
|
|
(347)
|
0
|
(85)
|
Other (expense) income, net |
|
|
|
|
|
|
|
|
(1,384)
|
(222)
|
0
|
Loss on early extinguishment of debt |
|
|
|
|
|
|
|
|
(2,488)
|
(7,891)
|
|
Gain on sale of businesses |
|
|
|
|
|
|
|
|
|
0
|
0
|
Interest (expense) income, net |
|
|
|
|
|
|
|
|
(83,362)
|
(87,113)
|
(88,984)
|
Equity in earnings of subsidiaries, net of tax |
|
|
|
|
|
|
|
|
129,082
|
157,963
|
13,568
|
Intercompany interest income (expense) |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
(Loss) income before (benefit) provision for income taxes |
|
|
|
|
|
|
|
|
41,501
|
62,737
|
(75,501)
|
(Benefit) provision for income taxes |
|
|
|
|
|
|
|
|
(24,135)
|
(38,002)
|
(35,628)
|
Net income (loss) |
|
|
|
|
|
|
|
|
65,636
|
100,739
|
(39,873)
|
Other comprehensive loss |
|
|
|
|
|
|
|
|
(50,964)
|
41,919
|
40,566
|
Comprehensive income (loss) |
|
|
|
|
|
|
|
|
14,672
|
142,658
|
693
|
Reportable Legal Entities | Guarantor Subsidiaries |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
2,682,710
|
2,362,292
|
2,158,853
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
1,841,070
|
1,610,781
|
1,465,201
|
Selling, general and administrative expenses |
|
|
|
|
|
|
|
|
419,984
|
373,050
|
341,963
|
Accretion of environmental liabilities |
|
|
|
|
|
|
|
|
8,797
|
8,479
|
9,261
|
Depreciation and amortization |
|
|
|
|
|
|
|
|
219,530
|
205,034
|
201,153
|
Goodwill impairment charge |
|
|
|
|
|
|
|
|
|
|
0
|
(Loss) income from operations |
|
|
|
|
|
|
|
|
193,329
|
164,948
|
141,275
|
Other (expense) income, net |
|
|
|
|
|
|
|
|
(1,284)
|
(5,156)
|
7,713
|
Loss on early extinguishment of debt |
|
|
|
|
|
|
|
|
0
|
0
|
|
Gain on sale of businesses |
|
|
|
|
|
|
|
|
|
30,732
|
1,704
|
Interest (expense) income, net |
|
|
|
|
|
|
|
|
1,252
|
1,523
|
5,391
|
Equity in earnings of subsidiaries, net of tax |
|
|
|
|
|
|
|
|
(25,765)
|
(48,683)
|
(80,244)
|
Intercompany interest income (expense) |
|
|
|
|
|
|
|
|
2,841
|
5,288
|
19,855
|
(Loss) income before (benefit) provision for income taxes |
|
|
|
|
|
|
|
|
170,373
|
148,652
|
95,694
|
(Benefit) provision for income taxes |
|
|
|
|
|
|
|
|
46,267
|
(10,117)
|
82,643
|
Net income (loss) |
|
|
|
|
|
|
|
|
124,106
|
158,769
|
13,051
|
Other comprehensive loss |
|
|
|
|
|
|
|
|
(50,964)
|
41,919
|
40,566
|
Comprehensive income (loss) |
|
|
|
|
|
|
|
|
73,142
|
200,688
|
53,617
|
Reportable Legal Entities | Non-Guarantor Subsidiaries |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
687,645
|
648,553
|
655,868
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
534,533
|
517,759
|
527,151
|
Selling, general and administrative expenses |
|
|
|
|
|
|
|
|
83,416
|
83,598
|
79,967
|
Accretion of environmental liabilities |
|
|
|
|
|
|
|
|
1,009
|
981
|
916
|
Depreciation and amortization |
|
|
|
|
|
|
|
|
79,095
|
83,388
|
85,849
|
Goodwill impairment charge |
|
|
|
|
|
|
|
|
|
|
34,013
|
(Loss) income from operations |
|
|
|
|
|
|
|
|
(10,408)
|
(37,173)
|
(72,028)
|
Other (expense) income, net |
|
|
|
|
|
|
|
|
(1,842)
|
(741)
|
(1,518)
|
Loss on early extinguishment of debt |
|
|
|
|
|
|
|
|
0
|
0
|
|
Gain on sale of businesses |
|
|
|
|
|
|
|
|
|
0
|
15,180
|
Interest (expense) income, net |
|
|
|
|
|
|
|
|
1,016
|
(218)
|
68
|
Equity in earnings of subsidiaries, net of tax |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Intercompany interest income (expense) |
|
|
|
|
|
|
|
|
(2,841)
|
(5,288)
|
(19,855)
|
(Loss) income before (benefit) provision for income taxes |
|
|
|
|
|
|
|
|
(14,075)
|
(43,420)
|
(78,153)
|
(Benefit) provision for income taxes |
|
|
|
|
|
|
|
|
6,714
|
6,069
|
1,574
|
Net income (loss) |
|
|
|
|
|
|
|
|
(20,789)
|
(49,489)
|
(79,727)
|
Other comprehensive loss |
|
|
|
|
|
|
|
|
(44,292)
|
38,131
|
15,291
|
Comprehensive income (loss) |
|
|
|
|
|
|
|
|
(65,081)
|
(11,358)
|
(64,436)
|
Consolidating Adjustments |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
(70,052)
|
(65,867)
|
(59,495)
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
(70,052)
|
(65,867)
|
(59,495)
|
Selling, general and administrative expenses |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Accretion of environmental liabilities |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Depreciation and amortization |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Goodwill impairment charge |
|
|
|
|
|
|
|
|
|
|
0
|
(Loss) income from operations |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Other (expense) income, net |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Loss on early extinguishment of debt |
|
|
|
|
|
|
|
|
0
|
0
|
|
Gain on sale of businesses |
|
|
|
|
|
|
|
|
|
0
|
0
|
Interest (expense) income, net |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Equity in earnings of subsidiaries, net of tax |
|
|
|
|
|
|
|
|
(103,317)
|
(109,280)
|
66,676
|
Intercompany interest income (expense) |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
(Loss) income before (benefit) provision for income taxes |
|
|
|
|
|
|
|
|
(103,317)
|
(109,280)
|
66,676
|
(Benefit) provision for income taxes |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Net income (loss) |
|
|
|
|
|
|
|
|
(103,317)
|
(109,280)
|
66,676
|
Other comprehensive loss |
|
|
|
|
|
|
|
|
95,256
|
(80,050)
|
(55,857)
|
Comprehensive income (loss) |
|
|
|
|
|
|
|
|
(8,061)
|
(189,330)
|
10,819
|
Service revenues |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
2,709,239
|
2,398,650
|
2,280,809
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
1,861,975
|
1,641,798
|
1,543,210
|
Service revenues | Reportable Legal Entities | Clean Harbors, Inc. |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Service revenues | Reportable Legal Entities | Guarantor Subsidiaries |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
2,145,310
|
1,870,256
|
1,747,985
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
1,421,693
|
1,224,326
|
1,116,132
|
Service revenues | Reportable Legal Entities | Non-Guarantor Subsidiaries |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
621,435
|
582,042
|
582,075
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
497,788
|
471,120
|
476,329
|
Service revenues | Consolidating Adjustments |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
(57,506)
|
(53,648)
|
(49,251)
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
(57,506)
|
(53,648)
|
(49,251)
|
Product revenues |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
591,064
|
546,328
|
474,417
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
443,576
|
420,875
|
389,647
|
Product revenues | Reportable Legal Entities | Clean Harbors, Inc. |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
0
|
0
|
0
|
Product revenues | Reportable Legal Entities | Guarantor Subsidiaries |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
537,400
|
492,036
|
410,868
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
419,377
|
386,455
|
349,069
|
Product revenues | Reportable Legal Entities | Non-Guarantor Subsidiaries |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
66,210
|
66,511
|
73,793
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
36,745
|
46,639
|
50,822
|
Product revenues | Consolidating Adjustments |
|
|
|
|
|
|
|
|
|
|
|
Revenues |
|
|
|
|
|
|
|
|
|
|
|
Total revenues |
|
|
|
|
|
|
|
|
(12,546)
|
(12,219)
|
(10,244)
|
Cost of revenues (exclusive of items shown separately below) |
|
|
|
|
|
|
|
|
|
|
|
Total cost of revenues |
|
|
|
|
|
|
|
|
$ (12,546)
|
$ (12,219)
|
$ (10,244)
|