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Segments (Tables)
 12 Months Ended
Mar. 31, 2024
Segment Reporting [Abstract]  
Schedule of disaggregation of revenue by segment The following table summarizes revenues related to our segments for the periods indicated:
Year Ended March 31,
202420232022
(in thousands)
Revenues:
Water Solutions:
Topic 606 revenues
Disposal service fees (1)$598,046 $547,716 $413,301 
Sale of recovered crude oil107,367 120,705 77,203 
Sale of water11,594 17,509 39,518 
Other service revenues (1)13,030 11,108 14,844 
Non-Topic 606 revenues781 — — 
Total Water Solutions revenues730,818 697,038 544,866 
Crude Oil Logistics:
Topic 606 revenues
Crude oil sales1,597,238 2,376,434 2,432,393 
Crude oil transportation and other sales50,151 89,502 75,484 
Non-Topic 606 revenues9,222 7,476 8,687 
Elimination of intersegment sales(547)(8,590)(11,068)
Total Crude Oil Logistics revenues1,656,064 2,464,822 2,505,496 
Liquids Logistics:
Topic 606 revenues
Refined products sales2,192,783 2,554,084 1,899,898 
Propane sales735,698 1,156,821 1,322,210 
Butane sales627,400 772,085 861,998 
Other products sales377,744 565,706 551,841 
Service sales8,209 7,944 8,781 
Non-Topic 606 revenues627,855 476,404 254,148 
Elimination of intersegment sales— — (1,323)
Total Liquids Logistics revenues4,569,689 5,533,044 4,897,553 
Total revenues$6,956,571 $8,694,904 $7,947,915 
(1)    For the years ended March 31, 2023 and 2022, respectively, $2.7 million and $0.5 million of revenues, which were included in Other Service Revenues in our 2023 Annual Report, are now included in Disposal Service Fees.
During the years ended March 31, 2024, 2023 and 2022, our Liquids Logistics revenues included $132.1 million, $211.0 million and $238.0 million of non-US revenues, respectively.
Schedule of certain information related to results of operations by segment
The following table summarizes depreciation and amortization expense (including amortization expense recorded within interest expense, cost of sales and operating expenses in Note 6 and Note 7) and operating income (loss) by segment for the periods indicated:
Year Ended March 31,
202420232022
(in thousands)
Depreciation and Amortization:
Water Solutions$214,727 $207,328 $214,805 
Crude Oil Logistics36,922 46,577 48,489 
Liquids Logistics10,632 13,575 19,000 
Corporate and Other20,450 23,399 23,914 
Total$282,731 $290,879 $306,208 
Operating Income (Loss):
Water Solutions$231,256 $198,924 $94,851 
Crude Oil Logistics52,074 81,524 45,033 
Liquids Logistics2,481 66,624 (8,441)
Corporate and Other(108,239)(57,909)(48,400)
Total$177,572 $289,163 $83,043 

The following table summarizes additions to property, plant and equipment and intangible assets by segment for the periods indicated. This information has been prepared on the accrual basis, and includes property, plant and equipment and intangible assets acquired in acquisitions.
Year Ended March 31,
202420232022
(in thousands)
Water Solutions$145,048 $123,180 $115,267 
Crude Oil Logistics6,905 9,649 6,422 
Liquids Logistics15,791 5,704 11,185 
Corporate and Other2,323 2,207 2,148 
Total$170,067 $140,740 $135,022 

The following tables summarize long-lived assets (consisting of property, plant and equipment, intangible assets, operating lease right-of-use assets and goodwill) and total assets by segment at the dates indicated:
March 31,
20242023
(in thousands)
Long-lived assets, net:
Water Solutions$2,608,007 $2,810,534 
Crude Oil Logistics827,248 870,999 
Liquids Logistics (1)298,595 363,736 
Corporate and Other34,267 39,363 
Total$3,768,117 $4,084,632 
(1)    Includes $10.2 million and $12.5 million of non-US long-lived assets at March 31, 2024 and 2023, respectively.
March 31,
20242023
(in thousands)
Total assets:
Water Solutions$2,818,444 $3,009,869 
Crude Oil Logistics1,368,461 1,616,953 
Liquids Logistics (1)686,885 774,221 
Corporate and Other79,707 55,101 
Assets held for sale (Note 17)66,597 — 
Total$5,020,094 $5,456,144 
(1)    Includes $22.1 million and $32.3 million of non-US total assets at March 31, 2024 and 2023, respectively.