v3.26.1
Segments (Details)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
Mar. 31, 2024
USD ($)
Segment Reporting [Abstract]      
Number of segments 3    
Segment information      
Total revenues $ 3,156,159 $ 3,469,186 $ 4,153,307
Depreciation and amortization 254,831 254,732 266,114
Amortization in cost of sales 60,568 60,519 73,360
Interest expense 257,490 280,078 269,804
Loss on disposal or impairment of assets, net 256,322 31,448 115,936
Net unrealized losses on derivatives 36,478 3,366 63,762
CMA Differential Roll Net (Gains) Losses     (71,285)
Lower of cost or net realizable value adjustments (2,890) 2,916 (2,408)
Revaluation of liabilities 4,415 (6,705) 2,680
Loss on early extinguishment of liabilities, net 16,749   55,281
Asset retirement obligation accretion 5,174 4,200 2,619
Equity-based compensation 11,206   1,098
Acquisition expense (5)     48,116
Adjustments related to unconsolidated entities (4) 24 427 384
Other (1,885) (7,931) (2,417)
Income (loss) from continuing operations before income taxes (178,779) 60,104 (156,270)
Capital expenditures 236,485 245,250 170,067
Total assets 4,175,539 4,609,440 5,020,094
Income (loss) from continuing operations before income taxes, domestic (180,900) 57,400 (159,100)
Income (loss) from continuing operations before income taxes, foreign 2,100 2,700 2,800
Cost of sales-product      
Segment information      
Amortization in cost of sales 0 257 0
Cost of sales-service      
Segment information      
Amortization in cost of sales 1,068 0 0
Water Solutions      
Segment information      
Loss on disposal or impairment of assets, net (100) (400) (6,900)
Crude Oil Logistics      
Segment information      
Loss on disposal or impairment of assets, net (300) 300 (2,900)
Liquids Logistics      
Segment information      
Loss on disposal or impairment of assets, net   600  
Liquids Logistics | Non-US      
Segment information      
Total revenues 138,600 128,200 132,100
Total assets 12,600 13,700 22,100
Operating segment      
Segment information      
Total revenues 3,155,741 3,469,201 4,153,854
Segment Reporting, cost of sales 2,143,571 2,500,955 3,195,668
Segment Reporting, operating, general and administrative expenses 299,614 309,403 313,489
Segment Reporting, other items (5,406) 2,895 3,785
Adjusted EBITDA 707,150 661,738 648,482
Capital expenditures 235,054 227,283 167,744
Total assets 4,121,207 4,542,179 4,940,387
Operating segment | Water Solutions      
Segment information      
Non-Topic 606 revenues 112 60 781
Total revenues 838,914 755,687 730,818
Segment Reporting, cost of sales 8,064 (2,106) 10,909
Segment Reporting, operating, general and administrative expenses 222,749 217,223 215,300
Segment Reporting, other items (5,375) 1,426 3,699
Adjusted EBITDA 602,726 541,996 508,308
Capital expenditures 221,255 208,168 145,048
Total assets 2,809,556 2,794,777 2,885,041
Operating segment | Crude Oil Logistics      
Segment information      
Non-Topic 606 revenues 5,059 6,986 9,222
Total revenues 1,054,631 879,902 1,656,611
Segment Reporting, cost of sales 954,738 772,665 1,527,236
Segment Reporting, operating, general and administrative expenses 40,919 40,866 42,589
Segment Reporting, other items (33) 2 101
Adjusted EBITDA 58,941 66,373 86,887
Capital expenditures 6,735 6,915 6,905
Total assets 923,685 1,198,501 1,368,461
Operating segment | Liquids Logistics      
Segment information      
Non-Topic 606 revenues 9,612 13,832 17,374
Total revenues 1,262,196 1,833,612 1,766,425
Segment Reporting, cost of sales 1,180,769 1,730,396 1,657,523
Segment Reporting, operating, general and administrative expenses 35,946 51,314 55,600
Segment Reporting, other items 2 1,467 (15)
Adjusted EBITDA 45,483 53,369 53,287
Loss on disposal or impairment of assets, net     800
Capital expenditures 7,064 12,200 15,791
Total assets 387,966 548,901 686,885
Operating segment | Disposal service fees | Water Solutions      
Segment information      
Topic 606 revenues, excluding assessed tax 714,686 637,098 598,046
Operating segment | Crude oil sales | Water Solutions      
Segment information      
Topic 606 revenues, excluding assessed tax 114,617 109,008 107,367
Operating segment | Crude oil sales | Crude Oil Logistics      
Segment information      
Topic 606 revenues, excluding assessed tax 1,020,241 806,653 1,597,238
Operating segment | Sale of water | Water Solutions      
Segment information      
Topic 606 revenues, excluding assessed tax 7,288 7,625 11,594
Operating segment | Other revenues | Water Solutions      
Segment information      
Topic 606 revenues, excluding assessed tax 2,211 1,896 13,030
Operating segment | Other revenues | Liquids Logistics      
Segment information      
Topic 606 revenues, excluding assessed tax 2,670 8,414 8,209
Operating segment | Crude oil transportation and other | Crude Oil Logistics      
Segment information      
Topic 606 revenues, excluding assessed tax 29,331 66,263 50,151
Operating segment | Butane sales | Liquids Logistics      
Segment information      
Topic 606 revenues, excluding assessed tax 553,626 648,303 627,400
Operating segment | Propane sales | Liquids Logistics      
Segment information      
Topic 606 revenues, excluding assessed tax 336,078 751,376 735,698
Operating segment | Other product sales | Liquids Logistics      
Segment information      
Topic 606 revenues, excluding assessed tax 360,210 411,687 377,744
Corporate and other      
Segment information      
Topic 606 revenues, excluding assessed tax 422 401 0
Total revenues 418 (15) (547)
Adjusted EBITDA (46,947) (38,846) (55,068)
Loss on disposal or impairment of assets, net     700
Capital expenditures 1,431 17,967 2,323
Total assets 54,332 67,261 79,707
Elimination of intersegment sales      
Segment information      
Topic 606 revenues, excluding assessed tax $ (4) $ (416) $ (547)