Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Total Revenues	$ 7,947,915	$ 5,227,023	$ 7,584,000
Total Cost of Sales	7,139,312	4,493,822	6,604,383
OPERATING COSTS AND EXPENSES:
Operating	285,535	254,562	332,993
General and administrative	63,546	70,468	113,664
Depreciation and amortization	288,720	317,227	265,312
Loss on disposal or impairment of assets, net	94,254	475,436	261,786
Revaluation of liabilities	(6,495)	6,261	9,194
Operating Income (Loss)	83,043	(390,753)	(3,332)
OTHER INCOME (EXPENSE):
Equity in earnings of unconsolidated entities	1,400	1,938	1,291
Interest expense	(271,640)	(198,799)	(181,184)
Gain (loss) on early extinguishment of liabilities, net	1,813	(16,692)	1,341
Other income (expense), net	2,254	(36,503)	1,684
Loss From Continuing Operations Before Income Taxes	(183,130)	(640,809)	(180,200)
INCOME TAX (EXPENSE) BENEFIT	(971)	3,391	(345)
Loss From Continuing Operations	(184,101)	(637,418)	(180,545)
Loss From Discontinued Operations, net of Tax	0	(1,769)	(218,235)
Net Loss	(184,101)	(639,187)	(398,780)
LESS: NET (INCOME) LOSS ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(655)	(632)	1,773
NET LOSS ATTRIBUTABLE TO NGL ENERGY PARTNERS LP	(184,756)	(639,819)	(397,007)
NET LOSS FROM CONTINUING OPERATIONS ALLOCATED TO COMMON UNITHOLDERS (NOTE 3)	(288,630)	(730,683)	(367,246)
NET LOSS FROM DISCONTINUED OPERATIONS ALLOCATED TO COMMON UNITHOLDERS (NOTE 3)	0	(1,767)	(218,017)
NET LOSS ALLOCATED TO COMMON UNITHOLDERS (NOTE 3)	$ (288,630)	$ (732,450)	$ (585,263)
BASIC LOSS PER COMMON UNIT
Loss From Continuing Operations	$ (2.22)	$ (5.67)	$ (2.88)
Loss From Discontinued Operations, net of Tax	0	(0.01)	(1.71)
Net Loss	(2.22)	(5.68)	(4.59)
DILUTED LOSS PER COMMON UNIT
Loss From Continuing Operations	(2.22)	(5.67)	(2.88)
Loss From Discontinued Operations, net of Tax	0	(0.01)	(1.71)
Net Loss	$ (2.22)	$ (5.68)	$ (4.59)
BASIC WEIGHTED AVERAGE COMMON UNITS OUTSTANDING (in units)	129,840,234	128,980,823	127,411,908
DILUTED WEIGHTED AVERAGE COMMON UNITS OUTSTANDING (in units)	129,840,234	128,980,823	127,411,908
Water solutions
OPERATING COSTS AND EXPENSES:
Loss on disposal or impairment of assets, net		$ 12,800
Crude oil logistics
OPERATING COSTS AND EXPENSES:
Loss on disposal or impairment of assets, net	$ 5,500
Liquids logistics
OPERATING COSTS AND EXPENSES:
Loss on disposal or impairment of assets, net	(11,800)
Operating segment | Water solutions
Total Revenues	544,866	370,986	$ 422,059
Total Cost of Sales	33,980	9,622	(33,870)
OPERATING COSTS AND EXPENSES:
Operating Income (Loss)	94,851	(92,720)	(173,064)
Operating segment | Crude oil logistics
Total Revenues	2,505,496	1,721,636	2,549,767
Total Cost of Sales	2,352,932	1,515,993	2,293,953
OPERATING COSTS AND EXPENSES:
Operating Income (Loss)	45,033	(304,330)	117,768
Operating segment | Liquids logistics
Total Revenues	4,897,553	3,133,146	4,611,136
Total Cost of Sales	4,752,400	2,966,391	4,342,526
OPERATING COSTS AND EXPENSES:
Operating Income (Loss)	(8,441)	70,441	142,411
Operating segment | Corporate and other
Total Revenues	0	1,255	1,038
Total Cost of Sales	$ 0	$ 1,816	$ 1,774