Consolidated Balance Sheets - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 38,909	$ 5,431
Accounts receivable-trade, allowance for expected credit loss	1,671	1,964
Inventories	130,907	142,607
Prepaid expenses and other current assets	126,933	98,089
Assets held for sale	66,597	0
Total current assets	1,178,934	1,292,445
PROPERTY, PLANT AND EQUIPMENT, net of accumulated depreciation of $1,011,274 and $898,184, respectively	2,096,702	2,223,380
PROPERTY, PLANT AND EQUIPMENT, accumulated depreciation	(1,011,274)	(898,184)
GOODWILL	634,282	712,364
INTANGIBLE ASSETS, net of accumulated amortization of $332,560 and $580,860, respectively	939,978	1,058,668
INTANGIBLE ASSETS, accumulated amortization	(332,560)	(580,860)
INVESTMENTS IN UNCONSOLIDATED ENTITIES	20,305	21,090
OPERATING LEASE RIGHT-OF-USE ASSETS	97,155	90,220
OTHER NONCURRENT ASSETS	52,738	57,977
Total assets	5,020,094	5,456,144
CURRENT LIABILITIES:
Accrued expenses and other payables	213,757	133,616
Advance payments received from customers	17,313	14,699
Current maturities of long-term debt	7,000	0
Operating lease obligations	31,090	34,166
Total liabilities held for sale	614	0
Total current liabilities	977,347	1,110,137
LONG-TERM DEBT, net of debt issuance costs of $49,178 and $30,117, respectively, and current maturities	2,843,822	2,857,805
Debt issuance costs, noncurrent, net	(49,178)	(30,117)
OPERATING LEASE OBLIGATIONS	70,573	58,450
OTHER NONCURRENT LIABILITIES	129,185	111,226
COMMITMENTS AND CONTINGENCIES (NOTE 8)
EQUITY:
General partner, representing a 0.1% interest, 132,645 and 132,059 notional units, respectively	(52,834)	(52,551)
Limited partners, representing a 99.9% interest, 132,512,766 and 131,927,343 common units issued and outstanding, respectively	134,807	455,564
Accumulated other comprehensive loss	(499)	(450)
Noncontrolling interests	18,237	16,507
Total equity	448,070	767,429
Total liabilities and equity	5,020,094	5,456,144
Nonrelated Party
CURRENT ASSETS:
Accounts receivable-trade, net of allowance for expected credit losses of $1,671 and $1,964, respectively	814,087	1,033,956
CURRENT LIABILITIES:
Accounts payable	707,536	927,591
Related Party
CURRENT ASSETS:
Accounts receivable-affiliates	1,501	12,362
CURRENT LIABILITIES:
Accounts payable	$ 37	$ 65
NGL Energy Holdings LLC | NGL Energy Partners LP
EQUITY:
General partner interest	0.10%
NGL Limited Partners | NGL Energy Partners LP
EQUITY:
Limited partner interest	99.90%
NGL Energy Holdings LLC (1)
EQUITY:
General partner, notional units outstanding (in units)	132,645	132,059
Limited Partner
EQUITY:
Limited partners, common units issued and outstanding (in units)	132,512,766	131,927,343
Series D Preferred Stock
CURRENT LIABILITIES:
CLASS D 9.00% PREFERRED UNITS, 600,000 and 600,000 preferred units issued and outstanding, respectively	$ 551,097	$ 551,097
Preferred units dividend rate	9.00%
Temporary equity, issued and outstanding (in units)	600,000	600,000
Series B Preferred Stock
EQUITY:
Preferred limited partners	$ 305,468	$ 305,468
Preferred units, issued and outstanding (in units)	12,585,642	12,585,642
Series C Preferred Stock
EQUITY:
Preferred limited partners	$ 42,891	$ 42,891
Preferred units, issued and outstanding (in units)	1,800,000	1,800,000