NGL Energy Partners (NGL) 10-Q 9 Nov 21 2022 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Sep. 30, 2021	Nov. 04, 2021
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-35172
Entity Registrant Name	NGL Energy Partners LP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-3427920
Entity Address, Address Line One	6120 South Yale Avenue, Suite 805
Entity Address, City or Town	Tulsa,
Entity Address, State or Province	OK
Entity Address, Postal Zip Code	74136
City Area Code	(918)
Local Phone Number	481-1119
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		129,593,939
Entity Central Index Key	0001504461
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
NEW YORK STOCK EXCHANGE, INC. | Common units
Entity Information [Line Items]
Title of 12(b) Security	Common units representing Limited Partner Interests
Trading Symbol	NGL
Security Exchange Name	NYSE
NEW YORK STOCK EXCHANGE, INC. | Preferred Class B
Entity Information [Line Items]
Title of 12(b) Security	Fixed-to-floating rate cumulative redeemable perpetual preferred units
Trading Symbol	NGL-PB
Security Exchange Name	NYSE
NEW YORK STOCK EXCHANGE, INC. | Class C Perpetual Preferred Units
Entity Information [Line Items]
Title of 12(b) Security	Fixed-to-floating rate cumulative redeemable perpetual preferred units
Trading Symbol	NGL-PC
Security Exchange Name	NYSE

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2021	Mar. 31, 2021
Cash and cash equivalents	$ 5,531	$ 4,829
Accounts receivable-trade, net of allowance for expected credit losses of $2,257 and $2,192, respectively	863,228	725,943
Accounts receivable-affiliates	8,979	9,435
Inventories	319,895	158,467
Prepaid expenses and other current assets	140,434	109,164
Total current assets	1,338,067	1,007,838
PROPERTY, PLANT AND EQUIPMENT, net of accumulated depreciation of $844,605 and $776,279, respectively	2,524,287	2,706,853
GOODWILL	744,439	744,439
INTANGIBLE ASSETS, net of accumulated amortization of $532,901 and $517,518, respectively	1,170,468	1,262,613
INVESTMENTS IN UNCONSOLIDATED ENTITIES	21,029	22,719
OPERATING LEASE RIGHT-OF-USE ASSETS	133,868	152,146
OTHER NONCURRENT ASSETS	49,634	50,733
Total assets	5,981,792	5,947,341
Accounts payable-trade	819,094	679,868
Accounts payable-affiliates	97	119
Accrued expenses and other payables	165,110	170,400
Advance payments received from customers	18,651	11,163
Current maturities of long-term debt	2,278	2,183
Operating lease obligations	45,456	47,070
Total current liabilities	1,050,686	910,803
LONG-TERM DEBT, net of debt issuance costs of $49,214 and $55,555, respectively, and current maturities	3,419,352	3,319,030
OPERATING LEASE OBLIGATIONS	87,388	103,637
OTHER NONCURRENT LIABILITIES	110,909	114,615
COMMITMENTS AND CONTINGENCIES (NOTE 7)
General partner, representing a 0.1% interest, 129,724 and 129,724 notional units, respectively	(52,375)	(52,189)
Limited partners, representing a 99.9% interest, 129,593,939 and 129,593,939 common units issued and outstanding, respectively	448,501	582,784
Accumulated other comprehensive loss	(310)	(266)
Noncontrolling interests	18,185	69,471
Total equity	762,360	948,159
Total liabilities and equity	5,981,792	5,947,341
PROPERTY, PLANT AND EQUIPMENT, accumulated depreciation	(844,605)	(776,279)
INTANGIBLE ASSETS, accumulated amortization	(532,901)	(517,518)
Debt issuance costs, noncurrent, net	(49,214)	(55,555)
Series D Preferred Stock
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
Preferred limited partners	$ 305,468	$ 305,468
Preferred units, issued and outstanding (in units)	12,585,642	12,585,642
Series C Preferred Stock
Preferred limited partners	$ 42,891	$ 42,891
Preferred units, issued and outstanding (in units)	1,800,000	1,800,000
General Partner
General partner interest	0.10%
General partner, notional units outstanding (in units)	129,724	129,724
Limited Partner
Limited partner interest	99.90%
Limited partners, common units issued and outstanding (in units)	129,593,939	129,593,939
Trade Accounts Receivable
Accounts receivable-trade, allowance for expected credit loss	$ 2,257	$ 2,192

Unaudited Condensed Consolida_2

Unaudited Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Total Revenues	$ 1,754,137	$ 1,168,158	$ 3,242,792	$ 2,012,573
Total Cost of Sales	1,525,593	964,890	2,850,386	1,641,937
OPERATING COSTS AND EXPENSES:
Operating	69,019	56,054	134,803	121,041
General and administrative	11,450	17,475	27,224	34,633
Depreciation and amortization	69,563	87,469	153,665	171,455
Loss on disposal or impairment of assets, net	13,694	5,954	81,230	17,976
Operating Income (Loss)	64,818	36,316	(4,516)	25,531
OTHER INCOME (EXPENSE):
Equity in earnings of unconsolidated entities	434	501	646	790
Interest expense	(68,495)	(46,935)	(135,625)	(90,896)
Gain on early extinguishment of liabilities, net	1,071	13,747	1,122	33,102
Other income, net	730	1,585	1,979	2,620
(Loss) Income From Continuing Operations Before Income Taxes	(1,442)	5,214	(136,394)	(28,853)
INCOME TAX BENEFIT	235	774	685	1,075
(Loss) Income From Continuing Operations	(1,207)	5,988	(135,709)	(27,778)
Loss From Discontinued Operations, net of Tax	0	(153)	0	(1,639)
Net (Loss) Income	(1,207)	5,835	(135,709)	(29,417)
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(330)	(168)	(768)	(219)
NET (LOSS) INCOME ATTRIBUTABLE TO NGL ENERGY PARTNERS LP	(1,537)	5,667	(136,477)	(29,636)
NET LOSS FROM CONTINUING OPERATIONS ALLOCATED TO COMMON UNITHOLDERS (NOTE 3)	(27,236)	(17,933)	(187,128)	(73,748)
NET LOSS FROM DISCONTINUED OPERATIONS ALLOCATED TO COMMON UNITHOLDERS (NOTE 3)	0	(152)	0	(1,637)
NET LOSS ALLOCATED TO COMMON UNITHOLDERS (NOTE 3)	$ (27,236)	$ (18,085)	$ (187,128)	$ (75,385)
BASIC LOSS PER COMMON UNIT
Loss From Continuing Operations	$ (0.21)	$ (0.14)	$ (1.44)	$ (0.57)
Loss From Discontinued Operations, net of Tax	0	0	0	(0.01)
Net Loss	(0.21)	(0.14)	(1.44)	(0.58)
DILUTED LOSS PER COMMON UNIT
Loss From Continuing Operations	(0.21)	(0.14)	(1.44)	(0.57)
Loss From Discontinued Operations, net of Tax	0	0	0	(0.01)
Net Loss	$ (0.21)	$ (0.14)	$ (1.44)	$ (0.58)
BASIC WEIGHTED AVERAGE COMMON UNITS OUTSTANDING (in units)	129,593,939	128,771,715	129,593,939	128,771,715
DILUTED WEIGHTED AVERAGE COMMON UNITS OUTSTANDING (in units)	129,593,939	128,771,715	129,593,939	128,771,715
Operating segment | Water solutions
Total Revenues	$ 136,210	$ 88,678	$ 266,436	$ 176,743
Total Cost of Sales	6,423	579	16,761	5,279
OPERATING COSTS AND EXPENSES:
Operating Income (Loss)	32,772	(13,277)	40,355	(29,324)
Operating segment | Crude oil logistics
Total Revenues	554,830	466,841	1,108,454	742,880
Total Cost of Sales	498,089	386,771	1,035,346	604,328
OPERATING COSTS AND EXPENSES:
Operating Income (Loss)	28,231	48,239	16,650	71,559
Operating segment | Liquids logistics
Total Revenues	1,063,097	612,324	1,867,902	1,092,322
Total Cost of Sales	1,021,081	577,086	1,798,279	1,031,422
OPERATING COSTS AND EXPENSES:
Operating Income (Loss)	11,461	14,338	(41,948)	18,900
Operating segment | Corporate and other
Total Revenues	0	315	0	628
Total Cost of Sales	$ 0	$ 454	$ 0	$ 908

Unaudited Condensed Consolida_3

Unaudited Condensed Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (1,207)	$ 5,835	$ (135,709)	$ (29,417)
Other comprehensive (loss) income	(52)	34	(44)	78
Comprehensive (loss) income	$ (1,259)	$ 5,869	$ (135,753)	$ (29,339)

Unaudited Condensed Consolida_4

Unaudited Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Accounting Standards Update 2016-13	Accumulated other comprehensive (loss) income	Noncontrolling Interests	General Partner	General PartnerAccounting Standards Update 2016-13	Preferred Class B and Class C Preferred Units	Preferred Class B and Class C Preferred UnitsPreferred Class B and Class C Preferred Units	Limited Partner	Limited PartnerAccounting Standards Update 2016-13	Limited PartnerCommon units
Beginning Balance (in units) at Mar. 31, 2020								14,385,642			128,771,715
Beginning Balance at Mar. 31, 2020	$ 1,735,690		$ (385)	$ 72,954	$ (51,390)		$ 348,359		$ 1,366,152
Increase (Decrease) in Partnership Capital
Distributions to general and common unit partners and preferred unitholders	(47,678)				(26)				(47,652)
Distributions to noncontrolling interest owners	(2,257)			(2,257)
Equity issued pursuant to incentive compensation plan (Note 8)	1,349								1,349
Net (loss) income	(35,252)			51	(57)				(35,246)
Other comprehensive loss	44		44
Ending Balance (in units) at Jun. 30, 2020								14,385,642			128,771,715
Ending Balance at Jun. 30, 2020	1,650,783		(341)	70,748	(51,474)		348,359		1,283,491
Beginning Balance (in units) at Mar. 31, 2020								14,385,642			128,771,715
Beginning Balance at Mar. 31, 2020	1,735,690		(385)	72,954	(51,390)		348,359		1,366,152
Increase (Decrease) in Partnership Capital
Other comprehensive loss	78
Ending Balance (in units) at Sep. 30, 2020								14,385,642			128,771,715
Ending Balance at Sep. 30, 2020	1,609,528		(307)	70,318	(51,518)		348,359		1,242,676
Increase (Decrease) in Partnership Capital
Cumulative effect adjustment for adoption of ASU 2016-13		$ (1,113)				$ (1)				$ (1,112)
Beginning Balance (in units) at Jun. 30, 2020								14,385,642			128,771,715
Beginning Balance at Jun. 30, 2020	1,650,783		(341)	70,748	(51,474)		348,359		1,283,491
Increase (Decrease) in Partnership Capital
Distributions to general and common unit partners and preferred unitholders	(47,834)				(26)				(47,808)
Distributions to noncontrolling interest owners	(598)			(598)
Equity issued pursuant to incentive compensation plan (Note 8)	1,308								1,308
Net (loss) income	5,835			168	(18)				5,685
Other comprehensive loss	34		34
Ending Balance (in units) at Sep. 30, 2020								14,385,642			128,771,715
Ending Balance at Sep. 30, 2020	1,609,528		(307)	70,318	(51,518)		348,359		1,242,676
Beginning Balance (in units) at Mar. 31, 2021								14,385,642			129,593,939
Beginning Balance at Mar. 31, 2021	948,159		(266)	69,471	(52,189)		348,359		582,784
Increase (Decrease) in Partnership Capital
Distributions to noncontrolling interest owners	(444)			(444)
Sawtooth joint venture disposition (Note 15)	(51,097)			(51,097)
Equity issued pursuant to incentive compensation plan (Note 8)	960								960
Net (loss) income	(134,502)			438	(159)				(134,781)
Other comprehensive loss	8		8
Ending Balance (in units) at Jun. 30, 2021								14,385,642			129,593,939
Ending Balance at Jun. 30, 2021	763,084		(258)	18,368	(52,348)		348,359		448,963
Beginning Balance (in units) at Mar. 31, 2021								14,385,642			129,593,939
Beginning Balance at Mar. 31, 2021	948,159		(266)	69,471	(52,189)		348,359		582,784
Increase (Decrease) in Partnership Capital
Other comprehensive loss	(44)
Ending Balance (in units) at Sep. 30, 2021								14,385,642			129,593,939
Ending Balance at Sep. 30, 2021	762,360		(310)	18,185	(52,375)		348,359		448,501
Beginning Balance (in units) at Jun. 30, 2021								14,385,642			129,593,939
Beginning Balance at Jun. 30, 2021	763,084		(258)	18,368	(52,348)		348,359		448,963
Increase (Decrease) in Partnership Capital
Distributions to noncontrolling interest owners	(513)			(513)
Equity issued pursuant to incentive compensation plan (Note 8)	1,048								1,048
Net (loss) income	(1,207)			330	(27)				(1,510)
Other comprehensive loss	(52)		(52)
Ending Balance (in units) at Sep. 30, 2021								14,385,642			129,593,939
Ending Balance at Sep. 30, 2021	$ 762,360		$ (310)	$ 18,185	$ (52,375)		$ 348,359		$ 448,501

Unaudited Condensed Consolida_5

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
OPERATING ACTIVITIES:
Net loss	$ (135,709)	$ (29,417)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Loss from discontinued operations, net of tax	0	1,639
Depreciation and amortization, including amortization of debt issuance costs	162,424	178,506
Gain on early extinguishment of liabilities, net	(1,122)	(33,102)
Non-cash equity-based compensation expense	(1,793)	4,558
Loss on disposal or impairment of assets, net	81,230	17,976
Change in provision for expected credit losses	96	(259)
Net adjustments to fair value of commodity derivatives	40,680	30,562
Equity in earnings of unconsolidated entities	(646)	(790)
Distributions of earnings from unconsolidated entities	2,009	2,994
Lower of cost or net realizable value adjustments	3,614	418
Other	721	941
Changes in operating assets and liabilities, exclusive of acquisitions:
Accounts receivable-trade and affiliates	(137,210)	124,801
Inventories	(175,910)	(113,691)
Other current and noncurrent assets	24,631	41,762
Accounts payable-trade and affiliates	139,688	(51,312)
Other current and noncurrent liabilities	(10,548)	(30,335)
Net cash (used in) provided by operating activities-continuing operations	(7,845)	145,251
Net cash used in operating activities-discontinued operations	0	(1,591)
Net cash (used in) provided by operating activities	(7,845)	143,660
INVESTING ACTIVITIES:
Capital expenditures	(77,808)	(132,304)
Net settlements of commodity derivatives	(65,688)	(22,106)
Proceeds from sales of assets	4,551	1,099
Proceeds from divestitures of businesses and investments, net	63,489	0
Investments in unconsolidated entities	(235)	(607)
Distributions of capital from unconsolidated entities	562	370
Net cash used in investing activities	(75,129)	(153,548)
FINANCING ACTIVITIES:
Proceeds from borrowings under revolving credit facilities	826,000	704,000
Payments on revolving credit facilities	(684,000)	(471,500)
Issuance of term credit agreement	0	250,000
Repayment of term credit agreement	0	(250,000)
Repayment and repurchase of senior unsecured notes	(40,249)	(54,499)
Payments on other long-term debt	(6,169)	(326)
Debt issuance costs	(10,326)	(9,947)
Distributions to general and common unit partners and preferred unitholders	0	(81,698)
Distributions to noncontrolling interest owners	(957)	(2,855)
Payments to settle contingent consideration liabilities	(623)	(79,079)
Net cash provided by financing activities	83,676	4,096
Net increase (decrease) in cash and cash equivalents	702	(5,792)
Cash and cash equivalents, beginning of period	4,829	22,704
Cash and cash equivalents, end of period	5,531	16,912
Supplemental cash flow information:
Cash interest paid	126,076	87,793
Income taxes paid (net of income tax refunds)	1,410	2,198
Supplemental non-cash investing and financing activities:
Distributions declared but not paid to preferred unitholders	0	21,976
Accrued capital expenditures	$ 13,264	$ 10,969

Organization and Operations

Organization and Operations	6 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Operations	Organization and Operations NGL Energy Partners LP (“we,” “us,” “our,” or the “Partnership”) is a Delaware limited partnership. NGL Energy Holdings LLC serves as our general partner. At September 30, 2021, our operations included three segments: • Our Water Solutions segment transports, treats, recycles and disposes of produced and flowback water generated from oil and natural gas production. We also sell produced water for reuse and brackish non-potable water to our producer customers to be used in their crude oil exploration and production activities. As part of processing water, we aggregate and sell recovered crude oil, also known as skim oil. We also dispose of solids such as tank bottoms, drilling fluids and drilling muds and perform other ancillary services such as truck and frac tank washouts. Our activities in this segment are underpinned by long-term, fixed fee contracts and acreage dedications, some of which contain minimum volume commitments, with leading oil and gas companies including large, investment grade producer customers. • Our Crude Oil Logistics segment purchases crude oil from producers and marketers and transports it to refineries or for resale at pipeline injection stations, storage terminals, barge loading facilities, rail facilities, refineries, and other trade hubs, and provides storage, terminaling, and transportation services through its owned assets. Our activities in this segment are supported by certain long-term, fixed rate contracts which include minimum volume commitments on our pipelines. • Our Liquids Logistics segment conducts supply operations for natural gas liquids, refined petroleum products and biodiesel to a broad range of commercial, retail and industrial customers across the United States and Canada. These operations are conducted through our 26 company-owned terminals, third-party storage and terminal facilities, common carrier pipelines and a fleet of leased railcars. We also provide marine exports of butane through our facility located in Chesapeake, Virginia.

Significant Accounting Policies

Significant Accounting Policies	6 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Basis of Presentation The accompanying unaudited condensed consolidated financial statements include our accounts and those of our controlled subsidiaries. Intercompany transactions and account balances have been eliminated in consolidation. Investments we do not control, but can exercise significant influence over, are accounted for using the equity method of accounting. We also own an undivided interest in a crude oil pipeline, and include our proportionate share of assets, liabilities, and expenses related to this pipeline in our unaudited condensed consolidated financial statements. Our unaudited condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim consolidated financial information in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”). Accordingly, the unaudited condensed consolidated financial statements exclude certain information and notes required by GAAP for complete annual consolidated financial statements. However, we believe that the disclosures made are adequate to make the information presented not misleading. The unaudited condensed consolidated financial statements include all adjustments that we consider necessary for a fair presentation of our consolidated financial position, results of operations and cash flows for the interim periods presented. Such adjustments consist only of normal recurring items, unless otherwise disclosed in this Quarterly Report. The unaudited condensed consolidated balance sheet at March 31, 2021 was derived from our audited consolidated financial statements for the fiscal year ended March 31, 2021 included in our Annual Report on Form 10-K (“Annual Report”) filed with the SEC on June 3, 2021. These interim unaudited condensed consolidated financial statements should be read in conjunction with our audited consolidated financial statements and notes thereto included in our Annual Report. Due to the seasonal nature of certain of our operations and other factors, the results of operations for interim periods are not necessarily indicative of the results of operations to be expected for future periods or for the full fiscal year ending March 31, 2022. Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the amount of assets and liabilities reported at the date of the consolidated financial statements and the amount of revenues and expenses reported during the periods presented. Critical estimates we make in the preparation of our unaudited condensed consolidated financial statements include, among others, determining the fair value of assets and liabilities acquired in acquisitions, the fair value of derivative instruments, the collectibility of accounts receivable, the recoverability of inventories, useful lives and recoverability of property, plant and equipment and amortizable intangible assets, the impairment of long-lived assets and goodwill, the fair value of asset retirement obligations, the value of equity-based compensation, accruals for environmental matters and estimating certain revenues. Although we believe these estimates are reasonable, actual results could differ from those estimates. Significant Accounting Policies Our significant accounting policies are consistent with those disclosed in Note 2 of our audited consolidated financial statements included in our Annual Report. Income Taxes We qualify as a partnership for income tax purposes. As such, we generally do not pay United States federal income tax. Rather, each owner reports his or her share of our income or loss on his or her individual tax return. The aggregate difference in the basis of our net assets for financial and tax reporting purposes cannot be readily determined, as we do not have access to information regarding each partner’s basis in the Partnership. We have a deferred tax liability of $44.1 million and $45.8 million at September 30, 2021 and March 31, 2021, respectively, as a result of acquiring corporations in connection with certain of our acquisitions, which is included within other noncurrent liabilities in our unaudited condensed consolidated balance sheets. The deferred tax liability is the tax effected cumulative temporary difference between the GAAP basis and tax basis of the acquired assets within the corporation. For GAAP purposes, certain of the acquired assets will be depreciated and amortized over time which will lower the GAAP basis. The deferred tax benefit recorded during the six months ended September 30, 2021 was $1.6 million with an effective tax rate of 23.1%. The deferred tax benefit recorded during the six months ended September 30, 2020 was $1.8 million with an effective tax rate of 23.8%. We evaluate uncertain tax positions for recognition and measurement in the unaudited condensed consolidated financial statements. To recognize a tax position, we determine whether it is more likely than not that the tax position will be sustained upon examination, including resolution of any related appeals or litigation, based on the technical merits of the position. A tax position that meets the more likely than not threshold is measured to determine the amount of benefit to be recognized in the unaudited condensed consolidated financial statements. We had no material uncertain tax positions that required recognition in our unaudited condensed consolidated financial statements at September 30, 2021 or March 31, 2021. Inventories Our inventories are valued at the lower of cost or net realizable value, with cost determined using either the weighted-average cost or the first in, first out (FIFO) methods, including the cost of transportation and storage, and with net realizable value defined as the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. In performing this analysis, we consider fixed-price forward commitments. Inventories consist of the following at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) Propane $ 111,648 $ 45,521 Butane 88,163 19,189 Crude oil 87,923 64,916 Biodiesel 12,658 16,169 Diesel 5,742 2,252 Ethanol 2,802 3,056 Other 10,959 7,364 Total $ 319,895 $ 158,467 Investments in Unconsolidated Entities Investments we do not control, but can exercise significant influence over, are accounted for using the equity method of accounting. Investments in partnerships and limited liability companies, unless our investment is considered to be minor, and investments in unincorporated joint ventures are also accounted for using the equity method of accounting. Our investments in unconsolidated entities consist of the following at the dates indicated: Entity Segment Ownership Interest September 30, 2021 March 31, 2021 (in thousands) Water services and land company Water Solutions 50% $ 14,889 $ 15,832 Water services and land company Water Solutions 50% 2,047 2,284 Water services and land company Water Solutions 10% 2,897 3,254 Aircraft company (1) Corporate and Other 50% 640 748 Water services company Water Solutions 50% 414 424 Natural gas liquids terminal company Liquids Logistics 50% 142 177 Total $ 21,029 $ 22,719 (1) This is an investment with a related party. Other Noncurrent Assets Other noncurrent assets consist of the following at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) Loan receivable (1) $ 3,053 $ 2,962 Linefill (2) 28,065 28,110 Minimum shipping fees - pipeline commitments (3) 11,035 13,171 Other 7,481 6,490 Total $ 49,634 $ 50,733 (1) Represents the noncurrent portion of a loan receivable, net of an allowance for an expected credit loss, with a former related party. (2) Represents minimum volumes of product we are required to leave on certain third-party owned pipelines under long-term shipment commitments. At September 30, 2021 and March 31, 2021, linefill consisted of 423,978 barrels of crude oil. Linefill held in pipelines we own is included within property, plant and equipment (see Note 4). (3) Represents the noncurrent portion of minimum shipping fees paid in excess of volumes shipped, or deficiency credits, for a contract with a crude oil pipeline operator. This amount can be recovered when volumes shipped exceed the minimum monthly volume commitment (see Note 7). As of September 30, 2021, the deficiency credit was $15.3 million, of which $4.3 million is recorded within prepaid expenses and other current assets in our unaudited condensed consolidated balance sheet. Accrued Expenses and Other Payables Accrued expenses and other payables consist of the following at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) Accrued interest $ 57,311 $ 56,299 Derivative liabilities 28,940 21,562 Accrued compensation and benefits 24,659 41,456 Excise and other tax liabilities 13,274 10,970 Product exchange liabilities 13,237 1,188 Other 27,689 38,925 Total $ 165,110 $ 170,400 Reclassifications We have reclassified certain prior period financial statement information to be consistent with the classification methods used in the current fiscal year. These reclassifications did not impact previously reported amounts of assets, liabilities, equity, net income or cash flows. Recent Accounting Pronouncements In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2020-06, “Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity.” This ASU (i) simplifies an issuer’s accounting for convertible instruments by eliminating two of the three models in ASC 470-20 that require separate accounting for embedded conversion features, (ii) amends diluted earnings per share calculations for convertible instruments by requiring the use of the if-converted method and (iii) simplifies the settlement assessment entities are required to perform on contracts that can potentially settle in an entity’s own equity by removing certain requirements. This guidance is effective for interim and annual periods beginning after December 15, 2021, with early adoption permitted. We are currently evaluating the effect that this guidance will have on our financial position, results of operations and cash flows. In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” The ASU provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. This guidance is effective prospectively upon issuance through December 31, 2022 and may be applied from the beginning of an interim period that includes the issuance date of this ASU. We are currently evaluating the effect that this guidance will have on our financial position, results of operations and cash flows.

Loss Per Common Unit

Loss Per Common Unit	6 Months Ended
	Sep. 30, 2021
Earnings Per Unit [Abstract]
Loss Per Common Unit	Loss Per Common Unit The following table presents our calculation of basic and diluted weighted average common units outstanding for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 Weighted average common units outstanding during the period: Common units - Basic 129,593,939 128,771,715 129,593,939 128,771,715 Common units - Diluted 129,593,939 128,771,715 129,593,939 128,771,715 For the three months and six months ended September 30, 2021 and 2020, all potential common units or convertible securities were considered antidilutive. Our loss per common unit is as follows for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands, except unit and per unit amounts) (Loss) income from continuing operations $ (1,207) $ 5,988 $ (135,709) $ (27,778) Less: Continuing operations income attributable to noncontrolling interests (330) (168) (768) (219) Net (loss) income from continuing operations attributable to NGL Energy Partners LP (1,537) 5,820 (136,477) (27,997) Less: Distributions to preferred unitholders (1) (25,726) (23,770) (50,837) (45,824) Less: Continuing operations net loss allocated to general partner (2) 27 17 186 73 Net loss from continuing operations allocated to common unitholders $ (27,236) $ (17,933) $ (187,128) $ (73,748) Loss from discontinued operations, net of tax $ — $ (153) $ — $ (1,639) Less: Discontinued operations loss allocated to general partner (2) — 1 — 2 Net loss from discontinued operations allocated to common unitholders $ — $ (152) $ — $ (1,637) Net loss allocated to common unitholders $ (27,236) $ (18,085) $ (187,128) $ (75,385) Basic loss per common unit Loss from continuing operations $ (0.21) $ (0.14) $ (1.44) $ (0.57) Loss from discontinued operations, net of tax $ — $ — $ — $ (0.01) Net loss $ (0.21) $ (0.14) $ (1.44) $ (0.58) Diluted loss per common unit Loss from continuing operations $ (0.21) $ (0.14) $ (1.44) $ (0.57) Loss from discontinued operations, net of tax $ — $ — $ — $ (0.01) Net loss $ (0.21) $ (0.14) $ (1.44) $ (0.58) Basic weighted average common units outstanding 129,593,939 128,771,715 129,593,939 128,771,715 Diluted weighted average common units outstanding 129,593,939 128,771,715 129,593,939 128,771,715 (1) Includes cumulative distributions for the three months and six months ended September 30, 2021, which were earned but not declared or paid (see Note 8 for a further discussion of the suspension of common unit and preferred unit distributions). (2) Net loss allocated to the general partner includes distributions to which it is entitled as the holder of incentive distribution rights.

Property, Plant and Equipment

Property, Plant and Equipment	6 Months Ended
	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Our property, plant and equipment consists of the following at the dates indicated: Description Estimated September 30, 2021 March 31, 2021 (in years) (in thousands) Natural gas liquids terminal and storage assets 2 - 30 $ 165,267 $ 319,554 Pipeline and related facilities 30 - 40 264,605 264,405 Vehicles and railcars 3 - 25 125,960 126,088 Water treatment facilities and equipment 3 - 30 2,044,610 1,930,437 Crude oil tanks and related equipment 2 - 30 236,305 238,924 Barges and towboats 5 - 30 137,603 137,386 Information technology equipment 3 - 7 47,275 50,220 Buildings and leasehold improvements 3 - 40 156,570 165,679 Land 100,874 100,352 Tank bottoms and linefill (1) 29,099 20,237 Other 3 - 20 15,317 15,054 Construction in progress 45,407 114,796 3,368,892 3,483,132 Accumulated depreciation (844,605) (776,279) Net property, plant and equipment $ 2,524,287 $ 2,706,853 (1) Tank bottoms, which are product volumes required for the operation of storage tanks, are recorded at historical cost. We recover tank bottoms when the storage tanks are removed from service. Linefill, which represents our portion of the product volume required for the operation of the proportionate share of a pipeline we own, is recorded at historical cost. The following table summarizes depreciation expense and capitalized interest expense for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Depreciation expense $ 47,845 $ 53,290 $ 108,451 $ 100,013 Capitalized interest expense $ 324 $ 445 $ 656 $ 2,113 We record (gains) losses from the sales of property, plant and equipment and any write-downs in value due to impairment within loss on disposal or impairment of assets, net in our unaudited condensed consolidated statements of operations. The following table summarizes (gains) losses on the disposal or impairment of property, plant and equipment by segment for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Water Solutions $ 1,296 $ 6,414 $ 8,785 $ 6,740 Crude Oil Logistics (14) — (56) 1,844 Liquids Logistics 11,776 43 11,753 47 Corporate and Other — (2) — (2) Total $ 13,058 $ 6,455 $ 20,482 $ 8,629

Intangible Assets

Intangible Assets	6 Months Ended
	Sep. 30, 2021
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Intangible Assets	Intangible Assets Our intangible assets consist of the following at the dates indicated: September 30, 2021 March 31, 2021 Description Amortizable Lives Gross Carrying Accumulated Net Gross Carrying Accumulated Net (in years) (in thousands) Amortizable: Customer relationships 3 - 25 $ 1,249,463 $ (456,015) $ 793,448 $ 1,318,638 $ (450,639) $ 867,999 Customer commitments 25 192,000 (17,280) 174,720 192,000 (13,440) 178,560 Pipeline capacity rights 30 7,799 (2,037) 5,762 7,799 (1,907) 5,892 Rights-of-way and easements 1 - 45 91,361 (10,863) 80,498 90,703 (9,270) 81,433 Water rights 13 - 30 100,369 (17,496) 82,873 100,369 (14,454) 85,915 Executory contracts and other agreements 1 - 35 34,975 (20,920) 14,055 48,709 (21,300) 27,409 Non-compete agreements 4 - 5 7,000 (5,639) 1,361 12,100 (6,102) 5,998 Debt issuance costs (1) 5 20,147 (2,651) 17,496 9,558 (406) 9,152 Total amortizable 1,703,114 (532,901) 1,170,213 1,779,876 (517,518) 1,262,358 Non-amortizable: Trade names 255 — 255 255 — 255 Total $ 1,703,369 $ (532,901) $ 1,170,468 $ 1,780,131 $ (517,518) $ 1,262,613 (1) Includes debt issuance costs related to the ABL Facility (as defined herein) and the Sawtooth credit agreement (as defined herein). Debt issuance costs related to the fixed-rate notes are reported as a reduction of the carrying amount of long-term debt. On June 18, 2021, the Sawtooth credit agreement was paid off and terminated prior to us selling our ownership interest in Sawtooth (see Note 15). We wrote off $0.1 million of debt issuance costs related to the Sawtooth credit agreement. The loss is reported within gain on early extinguishment of liabilities, net within our unaudited condensed consolidated statement of operations. The weighted-average remaining amortization period for intangible assets is approximately 20.6 years. Amortization expense is as follows for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, Recorded In 2021 2020 2021 2020 (in thousands) Depreciation and amortization $ 21,718 $ 34,179 $ 45,214 $ 71,442 Cost of sales 71 76 144 153 Interest expense 1,693 1,560 2,375 3,092 Operating expenses 61 61 123 123 Total $ 23,543 $ 35,876 $ 47,856 $ 74,810 Expected amortization of our intangible assets is as follows (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 41,625 2023 80,725 2024 74,385 2025 66,942 2026 64,229 2027 60,186 Thereafter 782,121 Total $ 1,170,213

Long-Term Debt

Long-Term Debt	6 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Our long-term debt consists of the following at the dates indicated: September 30, 2021 March 31, 2021 Face Unamortized Book Face Unamortized Book (in thousands) Senior secured notes: 7.500% Notes due 2026 (“2026 Senior Secured Notes”) $ 2,050,000 $ (39,708) $ 2,010,292 $ 2,050,000 $ (44,246) $ 2,005,754 Asset-based revolving credit facility (“ABL Facility”) 146,000 — 146,000 4,000 — 4,000 Senior unsecured notes: 7.500% Notes due 2023 (“2023 Notes”) 519,496 (2,690) 516,806 555,251 (3,564) 551,687 6.125% Notes due 2025 (“2025 Notes”) 380,020 (2,876) 377,144 380,020 (3,297) 376,723 7.500% Notes due 2026 (“2026 Notes”) 332,402 (3,875) 328,527 338,402 (4,378) 334,024 Other long-term debt 42,926 (65) 42,861 49,095 (70) 49,025 3,470,844 (49,214) 3,421,630 3,376,768 (55,555) 3,321,213 Less: Current maturities 2,278 — 2,278 2,183 — 2,183 Long-term debt $ 3,468,566 $ (49,214) $ 3,419,352 $ 3,374,585 $ (55,555) $ 3,319,030 (1) Debt issuance costs related to the ABL Facility and the Sawtooth credit agreement (included in other long-term debt) are reported within intangible assets, rather than as a reduction of the carrying amount of long-term debt. 2026 Senior Secured Notes The 2026 Senior Secured Notes bear interest at 7.5%, which is payable on February 1 and August 1 of each year, which began on August 1, 2021. The 2026 Senior Secured Notes mature on February 1, 2026. The 2026 Senior Secured Notes were issued pursuant to an indenture dated February 4, 2021 (the “Indenture”). The 2026 Senior Secured Notes are secured by first priority liens on substantially all of our assets other than our accounts receivable, inventory, pledged deposit accounts, cash and cash equivalents, renewable energy tax credits and related assets and second priority liens in our accounts receivable, inventory, pledged deposit accounts, cash and cash equivalents, renewable energy tax credits and related assets. The Indenture contains covenants that, among other things, limit our ability to: pay distributions or make other restricted payments or repurchase stock; incur or guarantee additional indebtedness or issue disqualified stock or certain preferred stock; make certain investments; create or incur liens; sell assets; enter into restrictions affecting the ability of restricted subsidiaries to make distributions, make loans or advances or transfer assets to the guarantors (including the Partnership); enter into certain transactions with our affiliates; designate restricted subsidiaries as unrestricted subsidiaries; and merge, consolidate or transfer or sell all or substantially all of our assets. The Indenture specifically restricts our ability to pay distributions until our total leverage ratio (as defined in the Indenture) for the most recently ended four full fiscal quarters at the time of the distribution is not greater than 4.75 to 1.00. These covenants are subject to a number of important exceptions and qualifications. Compliance At September 30, 2021, we were in compliance with the covenants under the 2026 Senior Secured Notes indenture. ABL Facility The $500.0 million ABL Facility is subject to a borrowing base, which includes a sub-limit for letters of credit. The initial borrowing base was $500.0 million and the sub-limit for letters of credit is $200.0 million. The ABL Facility is secured by a lien on substantially all of our assets, including among other things, a first priority lien on our accounts receivable, inventory, pledged deposit accounts, cash and cash equivalents, renewable energy tax credits and related assets and a second priority lien on our all of our other assets. At September 30, 2021, we had letters of credit outstanding of approximately $152.2 million. The ABL Facility is scheduled to mature at the earliest of (a) February 4, 2026 or (b) 91 days prior to the earliest maturity date in respect to any of our indebtedness in an aggregate principal amount of $50.0 million or greater, if such indebtedness is outstanding at such time, subject to certain exceptions. All borrowings under the ABL Facility bear interest, at our option, at either (i) an alternate base rate plus a margin of 2.00% per year or (ii) an adjusted LIBOR rate plus a margin of 3.00% per year. At September 30, 2021, the borrowings under the ABL Facility had a weighted average interest rate of 4.89%, calculated as the alternate base rate of 3.25% plus a margin of 2.00% on the alternate base rate borrowings and weighted average LIBOR rate of 0.50% plus a margin of 3.00% for the LIBOR borrowings. On September 30, 2021, the interest rate in effect on letters of credit was 3.00%. The ABL Facility contains various affirmative and negative covenants, including financial reporting requirements and limitations on indebtedness, liens, mergers, consolidations, liquidations and dissolutions, sales of assets, distributions and other restricted payments, investments (including acquisitions) and transactions with affiliates. The ABL Facility contains, as the only financial covenant, a minimum Fixed Charge Coverage Ratio financial covenant that is tested based on the financial statements for the most recently ended fiscal quarter upon the occurrence and during the continuation of a Cash Dominion Event (as defined in the ABL Facility). At September 30, 2021, no Cash Dominion Event had occurred. Compliance At September 30, 2021, we were in compliance with the covenants under the ABL Facility. Senior Unsecured Notes The senior unsecured notes include the 2023 Notes, 2025 Notes and 2026 Notes (collectively, the “Senior Unsecured Notes”). Repurchases The following table summarizes repurchases of Senior Unsecured Notes for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2021 (in thousands) 2023 Notes Notes repurchased $ 17,088 $ 35,755 Cash paid (excluding payments of accrued interest) $ 16,536 $ 34,929 Gain on early extinguishment of debt (1) $ 461 $ 627 2026 Notes Notes repurchased $ 6,000 $ 6,000 Cash paid (excluding payments of accrued interest) $ 5,320 $ 5,320 Gain on early extinguishment of debt (2) $ 610 $ 610 (1) Gain on early extinguishment of debt for the three months and six months ended September 30, 2021 is inclusive of the write-off of debt issuance costs of $0.1 million and $0.2 million, respectively. The gain is reported within gain on early extinguishment of liabilities, net within our unaudited condensed consolidated statements of operations. (2) Gain on early extinguishment of debt for the three months and six months ended September 30, 2021 is inclusive of the write-off of debt issuance costs of $0.1 million and $0.1 million, respectively. The gain is reported within gain on early extinguishment of liabilities, net within our unaudited condensed consolidated statements of operations. Compliance At September 30, 2021, we were in compliance with the covenants under all of the Senior Unsecured Notes indentures. Other Long-term Debt The Sawtooth Caverns, LLC (“Sawtooth”) credit agreement was paid off and terminated prior to us selling our ownership interest in Sawtooth on June 18, 2021 (see Note 15). On October 29, 2020, we entered into an equipment loan for $45.0 million which bears interest at a rate of 8.6% and is secured by certain of our barges and towboats. We have an aggregate principal balance of $42.9 million at September 30, 2021. The loan matures on November 1, 2027. Debt Maturity Schedule The scheduled maturities of our long-term debt are as follows at September 30, 2021: Fiscal Year Ending March 31, 2026 Senior Secured Notes ABL Facility Senior Unsecured Notes Other Total (in thousands) 2022 (six months) $ — $ — $ — $ 1,013 $ 1,013 2023 — — — 2,585 2,585 2024 — — 519,496 2,816 522,312 2025 — — 380,020 3,068 383,088 2026 2,050,000 146,000 — 3,343 2,199,343 2027 — — 332,402 3,642 336,044 Thereafter — — — 26,459 26,459 Total $ 2,050,000 $ 146,000 $ 1,231,918 $ 42,926 $ 3,470,844 Amortization of Debt Issuance Costs Amortization expense for debt issuance costs related to long-term debt was $3.1 million and $1.7 million during the three months ended September 30, 2021 and 2020, respectively, and $6.1 million and $3.7 million during the six months ended September 30, 2021 and 2020, respectively. Expected amortization of debt issuance costs is as follows (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 6,076 2023 12,152 2024 11,618 2025 10,795 2026 8,521 2027 46 Thereafter 6 Total $ 49,214

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure	Commitments and Contingencies Legal Contingencies In August 2015, LCT Capital, LLC (“LCT”) filed a lawsuit against NGL Energy Holdings LLC (the “GP”) and the Partnership seeking payment for investment banking services relating to the purchase of TransMontaigne Inc. and related assets in July 2014. After pre-trial rulings, LCT was limited to pursuing claims of (i) quantum meruit (the value of the services rendered by LCT) and (ii) fraudulent misrepresentation against the defendants. Following a jury trial conducted in Delaware state court from July 23, 2018 through August 1, 2018, the jury returned a verdict consisting of an award of $4.0 million for quantum meruit and $29.0 million for fraudulent misrepresentation, subject to statutory interest. On December 5, 2019, in response to the defendants’ post-trial motion, the Court issued an Order overturning the jury’s damages award and ordering the case to be set for a damages-only trial. Both parties filed applications with the trial court asking the trial court to certify the December 5th Order for interlocutory, immediate review by the Appellate Court. On January 7, 2020, the Supreme Court of Delaware (“Supreme Court”) entered an Order accepting an interlocutory appeal of various issues relating to both the quantum meruit and fraudulent misrepresentation verdicts. The Supreme Court heard oral arguments of the parties on November 4, 2020, took the matters presented under advisement and on January 28, 2021, issued a ruling that (a) LCT is not entitled to “benefit-of-the-bargain” damages on its fraud claim; (b) LCT is not entitled to receive fraudulent misrepresentation damages separate from its quantum meruit damages; (c) the trial court abused its discretion when it ordered a new trial on damages relating to LCT’s claim of fraudulent misrepresentation; and (d) the trial court properly ordered a new trial on LCT’s claim of quantum meruit damages. The date for a new trial, to be limited to the quantum meruit claim, has not yet been set by the trial court. Any allocation of the ultimate verdict award, if any, between the GP and the Partnership will be made by the board of directors of our general partner once all information is available to it and after the new trial, any post-trial and/or any appellate process has concluded and the verdict is final as a matter of law. As of September 30, 2021, we have accrued $2.5 million related to this matter. We are party to various other claims, legal actions, and complaints arising in the ordinary course of business. In the opinion of our management, the ultimate resolution of these claims, legal actions, and complaints, after consideration of amounts accrued, insurance coverage, and other arrangements, is not expected to have a material adverse effect on our consolidated financial position, results of operations or cash flows. However, the outcome of such matters is inherently uncertain, and estimates of our liabilities may change materially as circumstances develop. Environmental Matters At September 30, 2021, we have an environmental liability, measured on an undiscounted basis, of $1.5 million, which is recorded within accrued expenses and other payables in our unaudited condensed consolidated balance sheet. Our operations are subject to extensive federal, state, and local environmental laws and regulations. Although we believe our operations are in substantial compliance with applicable environmental laws and regulations, risks of additional costs and liabilities are inherent in our business, and there can be no assurance that we will not incur significant costs. Moreover, it is possible that other developments, such as increasingly stringent environmental laws, regulations and enforcement policies thereunder, and claims for damages to property or persons resulting from the operations, could result in substantial costs. Accordingly, we have adopted policies, practices, and procedures in the areas of pollution control, product safety, occupational health, and the handling, storage, use, and disposal of hazardous materials designed to prevent material environmental or other damage, and to limit the financial liability that could result from such events. However, some risk of environmental or other damage is inherent in our business. Asset Retirement Obligations We have contractual and regulatory obligations at certain facilities for which we have to perform remediation, dismantlement, or removal activities when the assets are retired. Our liability for asset retirement obligations is discounted to present value. To calculate the liability, we make estimates and assumptions about the retirement cost and the timing of retirement. Changes in our assumptions and estimates may occur as a result of the passage of time and the occurrence of future events. The following table summarizes changes in our asset retirement obligation, which is reported within other noncurrent liabilities in our unaudited condensed consolidated balance sheets (in thousands): Balance at March 31, 2021 $ 28,079 Liabilities incurred 1,848 Liabilities associated with disposition of Sawtooth (see Note 15) (1,612) Accretion expense 875 Balance at September 30, 2021 $ 29,190 In addition to the obligations described above, we may be obligated to remove facilities or perform other remediation upon retirement of certain other assets. However, the fair value of the asset retirement obligation cannot currently be reasonably estimated because the settlement dates are indeterminable. We will record an asset retirement obligation for these assets in the periods in which settlement dates are reasonably determinable. Other Commitments We have noncancelable agreements for product storage, railcar spurs and real estate. The following table summarizes future minimum payments under these agreements at September 30, 2021 (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 2,859 2023 5,859 2024 5,720 2025 1,181 2026 1,162 2027 1,154 Thereafter 5,386 Total $ 23,321 As part of the acquisition of Hillstone Environmental Partners, LLC, we assumed an obligation to pay a quarterly subsidy payment in the event that specified volumetric thresholds are not exceeded at a third-party facility. This agreement expires on December 31, 2022. For the three months and six months ended September 30, 2021, we recorded $0.6 million and $1.2 million, respectively, and for the three months and six months ended September 30, 2020, we recorded $0.7 million and $1.4 million, respectively, within operating expense in our unaudited condensed consolidated statements of operations. At September 30, 2021, the range of potential payments we could be obligated to make pursuant to the subsidy agreement could be from $0.0 million to $4.1 million. Pipeline Capacity Agreements We have noncancelable agreements with crude oil pipeline operators, which guarantee us minimum monthly shipping capacity on the pipelines. As a result, we are required to pay the minimum shipping fees if actual shipments are less than our allotted capacity. Under certain agreements we have the ability to recover minimum shipping fees previously paid if our shipping volumes exceed the minimum monthly shipping commitment during each month remaining under the agreement, with some contracts containing provisions that allow us to continue shipping up to six months after the maturity date of the contract in order to recapture previously paid minimum shipping delinquency fees. We currently have an asset recorded in prepaid expenses and other current assets and in other noncurrent assets in our unaudited condensed consolidated balance sheet for minimum shipping fees paid in both the current and previous periods that are expected to be recovered in future periods by exceeding the minimum monthly volumes (see Note 2). The following table summarizes future minimum throughput payments under these agreements at September 30, 2021 (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 17,609 2023 35,314 2024 35,410 2025 30,897 Total $ 119,230 Sales and Purchase Contracts We have entered into product sales and purchase contracts for which we expect the parties to physically settle and deliver the inventory in future periods. At September 30, 2021, we had the following commodity purchase commitments (in thousands): Crude Oil (1) Natural Gas Liquids Value Volume Value Volume Fixed-Price Commodity Purchase Commitments: 2022 (six months) $ 114,126 1,607 $ 16,624 21,046 2023 — — 3,546 4,788 2024 — — 1,946 2,772 Total $ 114,126 1,607 $ 22,116 28,606 Index-Price Commodity Purchase Commitments: 2022 (six months) $ 1,631,013 23,165 $ 1,031,514 740,186 2023 2,071,352 32,176 31,186 30,080 2024 1,720,969 28,920 15,855 25,200 2025 1,193,320 21,170 — — 2026 537,657 10,409 — — Total $ 7,154,311 115,840 $ 1,078,555 795,466 (1) Our crude oil index-price purchase commitments exceed our crude oil index-price sales commitments (presented below) due primarily to our long-term purchase commitments for crude oil that we purchase and ship on the Grand Mesa Pipeline. As these purchase commitments are deliver-or-pay contracts, whereby our counterparty is required to pay us for any volumes not delivered, we have not entered into corresponding long-term sales contracts for volumes we may not receive. At September 30, 2021, we had the following commodity sale commitments (in thousands): Crude Oil Natural Gas Liquids Value Volume Value Volume Fixed-Price Commodity Sale Commitments: 2022 (six months) $ 114,352 1,607 $ 186,391 164,404 2023 — — 15,692 18,366 2024 — — 3,064 4,169 2025 — — 38 40 Total $ 114,352 1,607 $ 205,185 186,979 Index-Price Commodity Sale Commitments: 2022 (six months) $ 1,309,659 17,599 $ 1,105,028 687,892 2023 728,712 10,640 33,823 23,791 2024 643,593 10,248 — — 2025 601,404 10,220 — — 2026 22,281 390 — — Total $ 3,305,649 49,097 $ 1,138,851 711,683 We account for the contracts shown in the tables above using the normal purchase and normal sale election. Under this accounting policy election, we do not record the physical contracts at fair value at each balance sheet date; instead, we record the purchase or sale at the contracted value once the delivery occurs. Contracts in the tables above may have offsetting derivative contracts (described in Note 9) or inventory positions (described in Note 2). Certain other forward purchase and sale contracts do not qualify for the normal purchase and normal sale election. These contracts are recorded at fair value in our unaudited condensed consolidated balance sheet and are not included in the tables above. These contracts are included in the derivative disclosures in Note 9 and represent $51.6 million of our prepaid expenses and other current assets and $29.0 million of our accrued expenses and other payables at September 30, 2021.

Equity

Equity	6 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Equity	Equity Partnership Equity The Partnership’s equity consists of a 0.1% general partner interest and a 99.9% limited partner interest, which consists of common units. Our general partner has the right, but not the obligation, to contribute a proportionate amount of capital to us to maintain its 0.1% general partner interest. Our general partner is not required to guarantee or pay any of our debts and obligations. As of September 30, 2021, we owned 8.69% of our general partner. Common Unit Repurchase Program On August 30, 2019, the board of directors of our general partner authorized a common unit repurchase program, under which we may repurchase up to $150.0 million of our outstanding common units through September 30, 2021, from time to time in the open market or in other privately negotiated transactions. We did not repurchase any units under this plan during the three months ended September 30, 2021 and this plan has expired. Suspension of Common Unit and Preferred Unit Distributions The board of directors of our general partner temporarily suspended all distributions (common unit distributions beginning with the quarter ended December 31, 2020 and preferred unit distributions beginning with the quarter ended March 31, 2021) in order to deleverage our balance sheet and meet the financial performance ratios set within the Indenture of the 2026 Senior Secured Notes, as discussed further in Note 6. Class B Preferred Units As of September 30, 2021, there were 12,585,642 of our 9.00% Class B Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units (“Class B Preferred Units”) outstanding. The current distribution rate for the Class B Preferred Units is 9.00% per year of the $25.00 liquidation preference per unit (equal to $2.25 per unit per year). For the quarter ended September 30, 2021, we did not declare or pay distributions to the holders of the Class B Preferred Units, thus the quarterly distribution for September 30, 2021 is $0.5625 and the cumulative distribution since suspension for each Class B Preferred Unit is $1.6875. In addition, the amount of cumulative but unpaid distributions shall continue to accumulate at the then applicable rate until all unpaid distributions have been paid in full. The total amount due as of September 30, 2021 is $21.7 million. Class C Preferred Units As of September 30, 2021, there were 1,800,000 of our 9.625% Class C Fixed-to-Floating Rate Cumulative Redeemable Perpetual Preferred Units (“Class C Preferred Units”) outstanding. The current distribution rate for the Class C Preferred Units is 9.625% per year of the $25.00 liquidation preference per unit (equal to $2.41 per unit per year). For the quarter ended September 30, 2021, we did not declare or pay distributions to the holders of the Class C Preferred Units, thus the quarterly distribution for September 30, 2021 is $0.6016 and the cumulative distribution since suspension for each Class C Preferred Unit is $1.8047. In addition, the amount of cumulative but unpaid distributions shall continue to accumulate at the then applicable rate until all unpaid distributions have been paid in full. The total amount due as of September 30, 2021 is $3.3 million. Class D Preferred Units As of September 30, 2021, there were 600,000 preferred units (“Class D Preferred Units”) and warrants exercisable to purchase an aggregate of 25,500,000 common units outstanding. The current distribution rate for the Class D Preferred Units is 9.00% per year per unit (equal to $90.00 per every $1,000 in unit value per year), plus an additional 1.5% rate increase due to us exceeding the adjusted total leverage ratio and due to a Class D distribution payment default, as defined within the amended and restated limited partnership agreement. For the quarter ended September 30, 2021, we did not declare or pay distributions to the holders of the Class D Preferred Units, thus the average quarterly distribution at September 30, 2021 is $27.32 and the average cumulative distribution since suspension for each Class D Preferred unit is $80.64. In addition, the amount of cumulative but unpaid distributions shall continue to accumulate at the then applicable rate until all unpaid distributions have been paid in full. The total amount due as of September 30, 2021 is $49.6 million. Equity-Based Incentive Compensation Our general partner adopted a long-term incentive plan (“LTIP”), which allowed for the issuance of equity-based compensation. Our general partner granted certain restricted units to employees and directors, which vest in tranches, subject to the continued service of the recipients through the vesting date (the “Service Awards”). The awards may also vest upon a change of control, at the discretion of the board of directors of our general partner. No distributions accrue to or are paid on the Service Awards during the vesting period. The LTIP expired on May 10, 2021. The following table summarizes the Service Award activity during the six months ended September 30, 2021: Unvested Service Award units at March 31, 2021 446,975 Units granted 3,294,750 Units forfeited (261,125) Unvested Service Award units at September 30, 2021 3,480,600 The following table summarizes the scheduled vesting of our unvested Service Award units at September 30, 2021: Fiscal Year Ending March 31, 2022 (six months) 1,176,975 2023 1,535,625 2024 768,000 Total 3,480,600 Service Awards are valued at the average of the high/low sales price as of the grant date less the present value of the expected distribution stream over the vesting period using a risk-free interest rate. The weighted-average grant price for the six months ended September 30, 2021 was $2.15 per Service Award. We record the expense for each Service Award on a straight-line basis over the requisite period for the entire award (that is, over the requisite service period of the last separately vesting portion of the award), ensuring that the amount of compensation cost recognized at any date at least equals the portion of the grant-date value of the award that is vested at that date. During the three months ended September 30, 2021 and 2020, we recorded compensation expense related to Service Award units of $1.0 million and $1.3 million, respectively. During the six months ended September 30, 2021 and 2020, we recorded compensation expense related to Service Award units of $2.0 million and $2.7 million, respectively. The following table summarizes the estimated future expense we expect to record on the unvested Service Award units at September 30, 2021 (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 1,382 2023 3,286 2024 1,375 Total $ 6,043 As the LTIP expired on May 10, 2021, we have no common units available for grant and any current unvested Service Awards that are forfeited, canceled or expire will not be available for future grants.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial InstrumentsOur cash and cash equivalents, accounts receivable, accounts payable, accrued expenses, and other current assets and liabilities (excluding derivative instruments) are carried at amounts which reasonably approximate their fair values due to their short-term nature. Commodity Derivatives The following table summarizes the estimated fair values of our commodity derivative assets and liabilities reported in our unaudited condensed consolidated balance sheets at the dates indicated: September 30, 2021 March 31, 2021 Derivative Derivative Derivative Derivative (in thousands) Level 1 measurements $ 61,301 $ (35,321) $ 12,312 $ (17,857) Level 2 measurements 51,637 (35,764) 37,520 (24,474) 112,938 (71,085) 49,832 (42,331) Netting of counterparty contracts (1) (35,337) 35,337 (12,648) 12,648 Net cash collateral (held) provided (7,949) 6,808 2,660 5,543 Commodity derivatives $ 69,652 $ (28,940) $ 39,844 $ (24,140) (1) Relates to commodity derivative assets and liabilities that are expected to be net settled on an exchange or through a netting arrangement with the counterparty. Our physical contracts that do not qualify as normal purchase normal sale transactions are not subject to such netting arrangements. The following table summarizes the accounts that include our commodity derivative assets and liabilities in our unaudited condensed consolidated balance sheets at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) Prepaid expenses and other current assets $ 68,792 $ 39,844 Other noncurrent assets 860 — Accrued expenses and other payables (28,940) (21,562) Other noncurrent liabilities — (2,578) Net commodity derivative asset $ 40,712 $ 15,704 The following table summarizes our open commodity derivative contract positions at the dates indicated. We do not account for these derivatives as hedges. Contracts Settlement Period Net Long Fair Value (in thousands) At September 30, 2021: Crude oil fixed-price (1) October 2021–December 2023 (1,152) $ 12,682 Propane fixed-price (1) October 2021–December 2023 1,284 35,880 Refined products fixed-price (1) October 2021–July 2022 (369) (6,081) Butane fixed-price (1) October 2021–December 2022 (697) (17,445) Other October 2021–December 2022 16,817 41,853 Net cash collateral held (1,141) Net commodity derivative asset $ 40,712 At March 31, 2021: Crude oil fixed-price (1) April 2021–December 2023 (1,850) $ (5,414) Propane fixed-price (1) April 2021–December 2023 (195) 2,188 Refined products fixed-price (1) April 2021–January 2022 (503) 1,928 Butane fixed-price (1) April 2021–March 2022 (753) (3,764) Other April 2021–June 2022 12,563 7,501 Net cash collateral provided 8,203 Net commodity derivative asset $ 15,704 (1) We may have fixed price physical purchases, including inventory, offset by floating price physical sales or floating price physical purchases offset by fixed price physical sales. These contracts are derivatives we have entered into as an economic hedge against the risk of mismatches between fixed and floating price physical obligations. During the three months ended September 30, 2021 and 2020, we recorded a net gain of $16.0 million and a net loss of $3.2 million, respectively, from our commodity derivatives to revenues and cost of sales in our unaudited condensed consolidated statements of operations. During the six months ended September 30, 2021 and 2020, we recorded net losses of $40.7 million and $30.6 million, respectively, from our commodity derivatives to revenues and cost of sales in our unaudited condensed consolidated statements of operations. The amounts for the three months and six months ended September 30, 2020 do not include net gains and losses related to Mid-Con (as defined herein) and Gas Blending (as defined herein), as these amounts have been classified as discontinued operations within our unaudited condensed consolidated statements of operations (see Note 16). Credit Risk We have credit policies that we believe minimize our overall credit risk, including an evaluation of potential counterparties’ financial condition (including credit ratings), collateral requirements under certain circumstances, and the use of industry standard master netting agreements, which allow for offsetting counterparty receivable and payable balances for certain transactions. At September 30, 2021, our primary counterparties were retailers, resellers, energy marketers, producers, refiners, and dealers. This concentration of counterparties may impact our overall exposure to credit risk, either positively or negatively, as the counterparties may be similarly affected by changes in economic, regulatory or other conditions. If a counterparty does not perform on a contract, we may not realize amounts that have been recorded in our unaudited condensed consolidated balance sheets and recognized in our net income. Interest Rate Risk The ABL Facility is variable-rate debt with interest rates that are generally indexed to the Wall Street Journal prime rate or LIBOR interest rate (or successor rate). At September 30, 2021, we had $146.0 million of outstanding borrowings under the ABL Facility at a weighted average interest rate of 4.89%. Fair Value of Fixed-Rate Notes The following table provides fair value estimates of our fixed-rate notes at September 30, 2021 (in thousands): Senior Secured Notes: 2026 Senior Secured Notes $ 2,088,438 Senior Unsecured Notes: 2023 Notes $ 503,478 2025 Notes $ 336,001 2026 Notes $ 295,838 For the 2026 Senior Secured Notes and Senior Unsecured Notes, the fair value estimates were developed based on publicly traded quotes and would be classified as Level 2 in the fair value hierarchy.

Segments

Segments	6 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Segments	Segments The following table summarizes revenues related to our segments for the periods indicated. Transactions between segments are recorded based on prices negotiated between the segments. The “Corporate and Other” category in the table below includes certain corporate expenses that are not allocated to the reportable segments. Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Revenues: Water Solutions: Topic 606 revenues Disposal service fees $ 101,892 $ 76,004 $ 200,189 $ 157,382 Sale of recovered crude oil 17,182 8,386 30,983 9,754 Sale of water 11,570 1,153 24,852 3,881 Other service revenues 5,566 3,135 10,412 5,726 Total Water Solutions revenues 136,210 88,678 266,436 176,743 Crude Oil Logistics: Topic 606 revenues Crude oil sales 536,067 418,174 1,071,496 648,902 Crude oil transportation and other 18,813 47,567 37,262 90,208 Non-Topic 606 revenues 2,120 3,105 4,365 6,274 Elimination of intersegment sales (2,170) (2,005) (4,669) (2,504) Total Crude Oil Logistics revenues 554,830 466,841 1,108,454 742,880 Liquids Logistics: Topic 606 revenues Refined products sales 444,268 288,781 837,377 499,328 Propane sales 219,297 136,538 379,700 258,066 Butane sales 167,337 89,920 285,877 145,117 Other product sales 139,566 90,418 253,896 138,753 Service revenues 3,065 6,683 8,488 13,025 Non-Topic 606 revenues 89,581 797 103,888 39,514 Elimination of intersegment sales (17) (813) (1,324) (1,481) Total Liquids Logistics revenues 1,063,097 612,324 1,867,902 1,092,322 Corporate and Other: Non-Topic 606 revenues — 315 — 628 Total Corporate and Other revenues — 315 — 628 Total $ 1,754,137 $ 1,168,158 $ 3,242,792 $ 2,012,573 The following tables summarize depreciation and amortization expense (including amortization expense recorded within interest expense, cost of sales and operating expenses in Note 5 and Note 6) and operating income (loss) by segment for the periods indicated. Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Depreciation and Amortization: Water Solutions $ 50,731 $ 62,282 $ 113,774 $ 120,477 Crude Oil Logistics 12,454 17,232 24,863 34,027 Liquids Logistics 4,758 7,102 11,803 15,335 Corporate and Other 6,500 4,210 11,984 8,667 Total $ 74,443 $ 90,826 $ 162,424 $ 178,506 Operating Income (Loss): Water Solutions $ 32,772 $ (13,277) $ 40,355 $ (29,324) Crude Oil Logistics 28,231 48,239 16,650 71,559 Liquids Logistics 11,461 14,338 (41,948) 18,900 Corporate and Other (7,646) (12,984) (19,573) (35,604) Total $ 64,818 $ 36,316 $ (4,516) $ 25,531 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. Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Water Solutions $ 33,591 $ 12,260 $ 60,553 $ 32,962 Crude Oil Logistics 1,008 3,098 1,471 8,770 Liquids Logistics 2,516 3,188 6,060 4,720 Corporate and Other 252 5,872 1,163 7,904 Total $ 37,367 $ 24,418 $ 69,247 $ 54,356 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: September 30, 2021 March 31, 2021 (in thousands) Long-lived assets, net: Water Solutions $ 3,043,245 $ 3,104,450 Crude Oil Logistics 1,073,603 1,090,578 Liquids Logistics (1) 403,552 626,221 Corporate and Other 52,662 44,802 Total $ 4,573,062 $ 4,866,051 (1) Includes $19.9 million and $20.9 million of non-US long-lived assets at September 30, 2021 and March 31, 2021, respectively. September 30, 2021 March 31, 2021 (in thousands) Total assets: Water Solutions $ 3,185,155 $ 3,204,850 Crude Oil Logistics 1,726,429 1,665,005 Liquids Logistics (1) 1,002,668 1,003,370 Corporate and Other 67,540 74,116 Total $ 5,981,792 $ 5,947,341

Transactions with Affiliates

Transactions with Affiliates	6 Months Ended
	Sep. 30, 2021
Related Party Transactions [Abstract]
Transactions with Affiliates	Transactions with Affiliates The following table summarizes our related party transactions for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Sales to entities affiliated with management $ — $ 1,243 $ — $ 2,123 Purchases from entities affiliated with management $ 18 $ 224 $ 88 $ 291 Purchases from equity method investees $ 350 $ 292 $ 541 $ 745 Sales to WPX (1) $ 12,485 $ 22,241 Purchases from WPX (1) $ 82,287 $ 116,060 (1) As previously reported, a member of the board of directors of our general partner was an executive officer of WPX Energy, Inc. (“WPX”) and has subsequently retired. Therefore, we are no longer classifying transactions with WPX as a related party. The prior year amounts relate to purchases and sales of crude oil with WPX as well as the treatment and disposal of produced water and solids received from WPX. Accounts receivable from affiliates consist of the following at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) NGL Energy Holdings LLC $ 8,775 $ 8,245 Equity method investees 203 462 Entities affiliated with management 1 728 Total $ 8,979 $ 9,435 Accounts payable to affiliates consist of the following at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) Equity method investees $ 96 $ 107 Entities affiliated with management 1 12 Total $ 97 $ 119 Other Related Party Transactions Guarantee of Outstanding Loan for KAIR2014 LLC (“KAIR2014”) In connection with the purchase of our 50% interest in KAIR2014, we executed a joint and several guarantee for the benefit of the lender for KAIR2014’s outstanding loan. The other owner of KAIR2014 is a party to a similar guarantee. This guarantee obligates us for the payment and performance of KAIR2014 with respect to the repayment of the loan. As of September 30, 2021, the outstanding balance of the loan is approximately $2.6 million and the loan matures in September 2023. As the guarantee is joint and several, we could be liable for the entire outstanding balance of the loan. The loan is collateralized by the airplane owned by KAIR2014 and in the event of a default, the lender could seek payment in full from us. As of September 30, 2021, no accrual has been recorded related to this guarantee.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	6 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customer	Revenue from Contracts with Customers We recognize revenue for services and products under revenue contracts as our obligations to either perform services or deliver or sell products under the contracts are satisfied. Our revenue contracts in scope under ASC 606 primarily have a single performance obligation and we do not receive material amounts of non-cash consideration. Our costs to obtain or fulfill our revenue contracts were not material as of September 30, 2021. The majority of our revenue agreements are within scope under ASC 606 and the remainder of our revenue comes from contracts that are accounted for as derivatives under ASC 815 or that contain nonmonetary exchanges or leases and are in scope under Topics 845 and 842, respectively. See Note 10 for a detail of disaggregated revenue. Revenue from contracts accounted for as derivatives under ASC 815 within our Liquids Logistics segment includes $10.0 million of net losses related to changes in the mark-to-market value of these arrangements recorded during the six months ended September 30, 2021. Remaining Performance Obligations Most of our service contracts are such that we have the right to consideration from a customer in an amount that corresponds directly with the value to the customer of our performance completed to date. Therefore, we are utilizing the practical expedient in ASC 606-10-55-18 under which we recognize revenue in the amount to which we have the right to invoice. Applying this practical expedient, we are not required to disclose the transaction price allocated to remaining performance obligations under these agreements. The following table summarizes the amount and timing of revenue recognition for such contracts at September 30, 2021 (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 63,962 2023 103,596 2024 85,147 2025 62,441 2026 17,215 2027 3,702 Thereafter 1,964 Total $ 338,027 Contract Assets and Liabilities The following tables summarize the balances of our contract assets and liabilities at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) Accounts receivable from contracts with customers $ 463,010 $ 436,682 Contract liabilities balance at March 31, 2021 $ 10,896 Payment received and deferred 30,591 Payment recognized in revenue (14,864) Disposition of Sawtooth (see Note 15) (8,234) Contract liabilities balance at September 30, 2021 $ 18,389

Leases

Leases	6 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Leases	Leases Lessee Accounting Our leasing activity primarily consists of product storage, office space, real estate, railcars, and equipment. The following table summarizes the components of our lease expense for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Operating lease expense $ 15,020 $ 17,953 $ 30,294 $ 36,230 Variable lease expense 5,023 4,334 10,253 9,213 Short-term lease expense 89 405 159 801 Total $ 20,132 $ 22,692 $ 40,706 $ 46,244 The following table summarizes maturities of our operating lease obligations at September 30, 2021 (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 26,546 2023 44,809 2024 28,814 2025 16,701 2026 8,419 2027 4,596 Thereafter 38,687 Total lease payments 168,572 Less imputed interest (35,728) Total operating lease obligations $ 132,844 The following table summarizes supplemental cash flow and non-cash information related to our operating leases for the periods indicated: Six Months Ended September 30, 2021 2020 (in thousands) Cash paid for amounts included in the measurement of operating lease obligations $ 30,267 $ 36,135 Operating lease right-of-use assets obtained in exchange for operating lease obligations $ 10,386 $ 19,257 Lessor Accounting and Subleases Our lessor arrangements include storage and railcar contracts. We also, from time to time, sublease certain of our storage capacity and railcars to third parties. Fixed rental revenue is recognized on a straight-line basis over the lease term. During the three months ended September 30, 2021 and 2020, fixed rental revenue was $3.2 million, which includes $0.3 million of sublease revenue, and $4.2 million, which includes $0.7 million of sublease revenue, respectively. During the six months ended September 30, 2021 and 2020, fixed rental revenue was $6.5 million, which includes $0.7 million of sublease revenue, and $8.5 million, which includes $1.3 million of sublease revenue, respectively. The following table summarizes future minimum lease payments receivable under various noncancelable operating lease agreements at September 30, 2021 (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 5,791 2023 9,632 2024 4,820 2025 691 2026 415 2027 415 Thereafter 422 Total $ 22,186

Allowance for Current Expected

Allowance for Current Expected Credit Loss	6 Months Ended
	Sep. 30, 2021
Credit Loss [Abstract]
Allowance for Current Expected Credit Loss	Allowance for Current Expected Credit Loss (CECL) ASU 2016-13 requires that an allowance for expected credit losses be recognized for certain financial assets that reflects the current expected credit loss over the financial asset’s contractual life. The valuation allowance considers the risk of loss, even if remote, and considers past events, current conditions and reasonable and supportable forecasts. We are exposed to credit losses primarily through sale of products and services and notes receivable from third-parties. A counterparty’s ability to pay is assessed through a credit process that considers the payment terms, the counterparty’s established credit rating or our assessment of the counterparty’s credit worthiness and other risks. We can require prepayment or collateral to mitigate credit risks. We group our financial assets into pools of counterparties with similar risk characteristics for the purpose of determining the allowance for expected credit losses. Each reporting period, we assess whether a significant change in the risk of expected credit loss has occurred. Among the quantitative and qualitative factors considered in calculating our allowance for expected credit losses are historical financial data, including write-offs and allowances, current conditions, industry risk and current credit ratings. Financial assets will be written off in whole, or in part, when practical recovery efforts have been exhausted and no reasonable expectation of recovery exists. Subsequent recoveries of amounts previously written off are recorded as an increase to the allowance. We manage receivable pools using past due balances as a key credit quality indicator. The following table summarizes changes in our allowance for expected credit losses: Accounts Receivable - Trade Notes Receivable and Other (in thousands) Balance at March 31, 2021 $ 2,192 $ 458 Change in provision for expected credit losses 96 — Write-offs charged against the provision (27) — Disposition of Sawtooth (see Note 15) (4) — Balance at September 30, 2021 $ 2,257 $ 458

Other Matters

Other Matters	6 Months Ended
	Sep. 30, 2021
Other Matters [Abstract]
Other Matters	Other Matters Sale of Sawtooth On June 18, 2021, we sold our approximately 71.5% interest in Sawtooth to a group of buyers for total consideration of $70.0 million less estimated expenses of approximately $2.1 million. We recorded a loss of $60.1 million within loss on disposal or impairment of assets, net in our unaudited condensed consolidated statement of operations for the six months ended September 30, 2021 . As this sale transaction did not represent a strategic shift that will have a major effect on our operations or financial results, operations related to this portion of our Liquids Logistics segment have not been classified as discontinued operations.

Discontinued Operations

Discontinued Operations	6 Months Ended
	Sep. 30, 2021
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued OperationsAs previously disclosed, on September 30, 2019, we completed the sale of TransMontaigne Product Services, LLC (“TPSL”) to Trajectory Acquisition Company, LLC. On January 3, 2020, we completed the sale of our refined products business in the mid-continent region of the United States (“Mid-Con”) to a third-party. On March 30, 2020, we completed the sale of our gas blending business in the southeastern and eastern regions of the United States (“Gas Blending”) to another third-party. As the sale of each of these businesses represented strategic shifts, the results of operations and cash flows related to these businesses are classified as discontinued operations for the period presented. The following table summarizes the results of operations from discontinued operations for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2020 2020 (in thousands) Revenues $ — $ 16,198 Cost of sales 118 16,429 Operating expenses 72 280 Loss on disposal or impairment of assets, net (1) 116 1,181 Operating loss from discontinued operations (306) (1,692) Interest expense 100 — Loss from discontinued operations before taxes (206) (1,692) Income tax benefit 53 53 Loss from discontinued operations, net of tax $ (153) $ (1,639) (1) Amount for the three months ended September 30, 2020 includes a loss of $0.1 million on the sale of TPSL and amount for the six months ended September 30, 2020 includes a loss of $1.0 million on the sale of Gas Blending and a loss of $0.2 million on the sale of TPSL.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	6 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements include our accounts and those of our controlled subsidiaries. Intercompany transactions and account balances have been eliminated in consolidation. Investments we do not control, but can exercise significant influence over, are accounted for using the equity method of accounting. We also own an undivided interest in a crude oil pipeline, and include our proportionate share of assets, liabilities, and expenses related to this pipeline in our unaudited condensed consolidated financial statements. Our unaudited condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim consolidated financial information in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”). Accordingly, the unaudited condensed consolidated financial statements exclude certain information and notes required by GAAP for complete annual consolidated financial statements. However, we believe that the disclosures made are adequate to make the information presented not misleading. The unaudited condensed consolidated financial statements include all adjustments that we consider necessary for a fair presentation of our consolidated financial position, results of operations and cash flows for the interim periods presented. Such adjustments consist only of normal recurring items, unless otherwise disclosed in this Quarterly Report. The unaudited condensed consolidated balance sheet at March 31, 2021 was derived from our audited consolidated financial statements for the fiscal year ended March 31, 2021 included in our Annual Report on Form 10-K (“Annual Report”) filed with the SEC on June 3, 2021. These interim unaudited condensed consolidated financial statements should be read in conjunction with our audited consolidated financial statements and notes thereto included in our Annual Report. Due to the seasonal nature of certain of our operations and other factors, the results of operations for interim periods are not necessarily indicative of the results of operations to be expected for future periods or for the full fiscal year ending March 31, 2022.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the amount of assets and liabilities reported at the date of the consolidated financial statements and the amount of revenues and expenses reported during the periods presented.
Income Taxes	Income Taxes We qualify as a partnership for income tax purposes. As such, we generally do not pay United States federal income tax. Rather, each owner reports his or her share of our income or loss on his or her individual tax return. The aggregate difference in the basis of our net assets for financial and tax reporting purposes cannot be readily determined, as we do not have access to information regarding each partner’s basis in the Partnership. We have a deferred tax liability of $44.1 million and $45.8 million at September 30, 2021 and March 31, 2021, respectively, as a result of acquiring corporations in connection with certain of our acquisitions, which is included within other noncurrent liabilities in our unaudited condensed consolidated balance sheets. The deferred tax liability is the tax effected cumulative temporary difference between the GAAP basis and tax basis of the acquired assets within the corporation. For GAAP purposes, certain of the acquired assets will be depreciated and amortized over time which will lower the GAAP basis. The deferred tax benefit recorded during the six months ended September 30, 2021 was $1.6 million with an effective tax rate of 23.1%. The deferred tax benefit recorded during the six months ended September 30, 2020 was $1.8 million with an effective tax rate of 23.8%. We evaluate uncertain tax positions for recognition and measurement in the unaudited condensed consolidated financial statements. To recognize a tax position, we determine whether it is more likely than not that the tax position will be sustained upon examination, including resolution of any related appeals or litigation, based on the technical merits of the position. A tax position that meets the more likely than not threshold is measured to determine the amount of benefit to be recognized in the unaudited condensed consolidated financial statements. We had no material uncertain tax positions that required recognition in our unaudited condensed consolidated financial statements at September 30, 2021 or March 31, 2021.
Inventories	InventoriesOur inventories are valued at the lower of cost or net realizable value, with cost determined using either the weighted-average cost or the first in, first out (FIFO) methods, including the cost of transportation and storage, and with net realizable value defined as the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. In performing this analysis, we consider fixed-price forward commitments.
Investments in Unconsolidated Entities	Investments in Unconsolidated Entities Investments we do not control, but can exercise significant influence over, are accounted for using the equity method of accounting. Investments in partnerships and limited liability companies, unless our investment is considered to be minor, and investments in unincorporated joint ventures are also accounted for using the equity method of accounting.
Reclassifications	Reclassifications We have reclassified certain prior period financial statement information to be consistent with the classification methods used in the current fiscal year. These reclassifications did not impact previously reported amounts of assets, liabilities, equity, net income or cash flows.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2020-06, “Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity.” This ASU (i) simplifies an issuer’s accounting for convertible instruments by eliminating two of the three models in ASC 470-20 that require separate accounting for embedded conversion features, (ii) amends diluted earnings per share calculations for convertible instruments by requiring the use of the if-converted method and (iii) simplifies the settlement assessment entities are required to perform on contracts that can potentially settle in an entity’s own equity by removing certain requirements. This guidance is effective for interim and annual periods beginning after December 15, 2021, with early adoption permitted. We are currently evaluating the effect that this guidance will have on our financial position, results of operations and cash flows. In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” The ASU provides optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. This guidance is effective prospectively upon issuance through December 31, 2022 and may be applied from the beginning of an interim period that includes the issuance date of this ASU. We are currently evaluating the effect that this guidance will have on our financial position, results of operations and cash flows.

Commitment and Contingencies (P

Commitment and Contingencies (Policies)	6 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Asset Retirement Obligation	Asset Retirement ObligationsWe have contractual and regulatory obligations at certain facilities for which we have to perform remediation, dismantlement, or removal activities when the assets are retired. Our liability for asset retirement obligations is discounted to present value. To calculate the liability, we make estimates and assumptions about the retirement cost and the timing of retirement. Changes in our assumptions and estimates may occur as a result of the passage of time and the occurrence of future events.

Equity (Policies)

Equity (Policies)	6 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Service Awards	Service Awards are valued at the average of the high/low sales price as of the grant date less the present value of the expected distribution stream over the vesting period using a risk-free interest rate. The weighted-average grant price for the six months ended September 30, 2021 was $2.15 per Service Award. We record the expense for each Service Award on a straight-line basis over the requisite period for the entire award (that is, over the requisite service period of the last separately vesting portion of the award), ensuring that the amount of compensation cost recognized at any date at least equals the portion of the grant-date value of the award that is vested at that date.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Policies)	6 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue recognition	We recognize revenue for services and products under revenue contracts as our obligations to either perform services or deliver or sell products under the contracts are satisfied. Our revenue contracts in scope under ASC 606 primarily have a single performance obligation and we do not receive material amounts of non-cash consideration. Our costs to obtain or fulfill our revenue contracts were not material as of September 30, 2021.

Allowance for Current Expecte_2

Allowance for Current Expected Credit Loss (Policies)	6 Months Ended
	Sep. 30, 2021
Credit Loss [Abstract]
Expected credit loss	ASU 2016-13 requires that an allowance for expected credit losses be recognized for certain financial assets that reflects the current expected credit loss over the financial asset’s contractual life. The valuation allowance considers the risk of loss, even if remote, and considers past events, current conditions and reasonable and supportable forecasts.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	6 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Schedule of inventories	Inventories consist of the following at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) Propane $ 111,648 $ 45,521 Butane 88,163 19,189 Crude oil 87,923 64,916 Biodiesel 12,658 16,169 Diesel 5,742 2,252 Ethanol 2,802 3,056 Other 10,959 7,364 Total $ 319,895 $ 158,467
Schedule of investments in unconsolidated entities	Our investments in unconsolidated entities consist of the following at the dates indicated: Entity Segment Ownership Interest September 30, 2021 March 31, 2021 (in thousands) Water services and land company Water Solutions 50% $ 14,889 $ 15,832 Water services and land company Water Solutions 50% 2,047 2,284 Water services and land company Water Solutions 10% 2,897 3,254 Aircraft company (1) Corporate and Other 50% 640 748 Water services company Water Solutions 50% 414 424 Natural gas liquids terminal company Liquids Logistics 50% 142 177 Total $ 21,029 $ 22,719 (1) This is an investment with a related party.
Schedule of other noncurrent assets	Other noncurrent assets consist of the following at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) Loan receivable (1) $ 3,053 $ 2,962 Linefill (2) 28,065 28,110 Minimum shipping fees - pipeline commitments (3) 11,035 13,171 Other 7,481 6,490 Total $ 49,634 $ 50,733 (1) Represents the noncurrent portion of a loan receivable, net of an allowance for an expected credit loss, with a former related party. (2) Represents minimum volumes of product we are required to leave on certain third-party owned pipelines under long-term shipment commitments. At September 30, 2021 and March 31, 2021, linefill consisted of 423,978 barrels of crude oil. Linefill held in pipelines we own is included within property, plant and equipment (see Note 4). (3) Represents the noncurrent portion of minimum shipping fees paid in excess of volumes shipped, or deficiency credits, for a contract with a crude oil pipeline operator. This amount can be recovered when volumes shipped exceed the minimum monthly volume commitment (see Note 7). As of September 30, 2021, the deficiency credit was $15.3 million, of which $4.3 million is recorded within prepaid expenses and other current assets in our unaudited condensed consolidated balance sheet.
Schedule of accrued expenses and other payables	Accrued expenses and other payables consist of the following at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) Accrued interest $ 57,311 $ 56,299 Derivative liabilities 28,940 21,562 Accrued compensation and benefits 24,659 41,456 Excise and other tax liabilities 13,274 10,970 Product exchange liabilities 13,237 1,188 Other 27,689 38,925 Total $ 165,110 $ 170,400

Loss Per Common Unit (Tables)

Loss Per Common Unit (Tables)	6 Months Ended
	Sep. 30, 2021
Earnings Per Unit [Abstract]
Schedule of weighted average number of units	The following table presents our calculation of basic and diluted weighted average common units outstanding for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 Weighted average common units outstanding during the period: Common units - Basic 129,593,939 128,771,715 129,593,939 128,771,715 Common units - Diluted 129,593,939 128,771,715 129,593,939 128,771,715
Schedule of loss per common unit	Our loss per common unit is as follows for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands, except unit and per unit amounts) (Loss) income from continuing operations $ (1,207) $ 5,988 $ (135,709) $ (27,778) Less: Continuing operations income attributable to noncontrolling interests (330) (168) (768) (219) Net (loss) income from continuing operations attributable to NGL Energy Partners LP (1,537) 5,820 (136,477) (27,997) Less: Distributions to preferred unitholders (1) (25,726) (23,770) (50,837) (45,824) Less: Continuing operations net loss allocated to general partner (2) 27 17 186 73 Net loss from continuing operations allocated to common unitholders $ (27,236) $ (17,933) $ (187,128) $ (73,748) Loss from discontinued operations, net of tax $ — $ (153) $ — $ (1,639) Less: Discontinued operations loss allocated to general partner (2) — 1 — 2 Net loss from discontinued operations allocated to common unitholders $ — $ (152) $ — $ (1,637) Net loss allocated to common unitholders $ (27,236) $ (18,085) $ (187,128) $ (75,385) Basic loss per common unit Loss from continuing operations $ (0.21) $ (0.14) $ (1.44) $ (0.57) Loss from discontinued operations, net of tax $ — $ — $ — $ (0.01) Net loss $ (0.21) $ (0.14) $ (1.44) $ (0.58) Diluted loss per common unit Loss from continuing operations $ (0.21) $ (0.14) $ (1.44) $ (0.57) Loss from discontinued operations, net of tax $ — $ — $ — $ (0.01) Net loss $ (0.21) $ (0.14) $ (1.44) $ (0.58) Basic weighted average common units outstanding 129,593,939 128,771,715 129,593,939 128,771,715 Diluted weighted average common units outstanding 129,593,939 128,771,715 129,593,939 128,771,715 (1) Includes cumulative distributions for the three months and six months ended September 30, 2021, which were earned but not declared or paid (see Note 8 for a further discussion of the suspension of common unit and preferred unit distributions). (2) Net loss allocated to the general partner includes distributions to which it is entitled as the holder of incentive distribution rights.

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	6 Months Ended
	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Schedule of property, plant and equipment	Our property, plant and equipment consists of the following at the dates indicated: Description Estimated September 30, 2021 March 31, 2021 (in years) (in thousands) Natural gas liquids terminal and storage assets 2 - 30 $ 165,267 $ 319,554 Pipeline and related facilities 30 - 40 264,605 264,405 Vehicles and railcars 3 - 25 125,960 126,088 Water treatment facilities and equipment 3 - 30 2,044,610 1,930,437 Crude oil tanks and related equipment 2 - 30 236,305 238,924 Barges and towboats 5 - 30 137,603 137,386 Information technology equipment 3 - 7 47,275 50,220 Buildings and leasehold improvements 3 - 40 156,570 165,679 Land 100,874 100,352 Tank bottoms and linefill (1) 29,099 20,237 Other 3 - 20 15,317 15,054 Construction in progress 45,407 114,796 3,368,892 3,483,132 Accumulated depreciation (844,605) (776,279) Net property, plant and equipment $ 2,524,287 $ 2,706,853 (1) Tank bottoms, which are product volumes required for the operation of storage tanks, are recorded at historical cost. We recover tank bottoms when the storage tanks are removed from service. Linefill, which represents our portion of the product volume required for the operation of the proportionate share of a pipeline we own, is recorded at historical cost.
Schedule of depreciation expense and capitalized interest expense	The following table summarizes depreciation expense and capitalized interest expense for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Depreciation expense $ 47,845 $ 53,290 $ 108,451 $ 100,013 Capitalized interest expense $ 324 $ 445 $ 656 $ 2,113
Schedule of (gain) loss on disposal or impairment of assets	We record (gains) losses from the sales of property, plant and equipment and any write-downs in value due to impairment within loss on disposal or impairment of assets, net in our unaudited condensed consolidated statements of operations. The following table summarizes (gains) losses on the disposal or impairment of property, plant and equipment by segment for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Water Solutions $ 1,296 $ 6,414 $ 8,785 $ 6,740 Crude Oil Logistics (14) — (56) 1,844 Liquids Logistics 11,776 43 11,753 47 Corporate and Other — (2) — (2) Total $ 13,058 $ 6,455 $ 20,482 $ 8,629

Intangible Assets (Tables)

Intangible Assets (Tables)	6 Months Ended
	Sep. 30, 2021
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Schedule of finite-lived intangible assets	Our intangible assets consist of the following at the dates indicated: September 30, 2021 March 31, 2021 Description Amortizable Lives Gross Carrying Accumulated Net Gross Carrying Accumulated Net (in years) (in thousands) Amortizable: Customer relationships 3 - 25 $ 1,249,463 $ (456,015) $ 793,448 $ 1,318,638 $ (450,639) $ 867,999 Customer commitments 25 192,000 (17,280) 174,720 192,000 (13,440) 178,560 Pipeline capacity rights 30 7,799 (2,037) 5,762 7,799 (1,907) 5,892 Rights-of-way and easements 1 - 45 91,361 (10,863) 80,498 90,703 (9,270) 81,433 Water rights 13 - 30 100,369 (17,496) 82,873 100,369 (14,454) 85,915 Executory contracts and other agreements 1 - 35 34,975 (20,920) 14,055 48,709 (21,300) 27,409 Non-compete agreements 4 - 5 7,000 (5,639) 1,361 12,100 (6,102) 5,998 Debt issuance costs (1) 5 20,147 (2,651) 17,496 9,558 (406) 9,152 Total amortizable 1,703,114 (532,901) 1,170,213 1,779,876 (517,518) 1,262,358 Non-amortizable: Trade names 255 — 255 255 — 255 Total $ 1,703,369 $ (532,901) $ 1,170,468 $ 1,780,131 $ (517,518) $ 1,262,613 (1) Includes debt issuance costs related to the ABL Facility (as defined herein) and the Sawtooth credit agreement (as defined herein). Debt issuance costs related to the fixed-rate notes are reported as a reduction of the carrying amount of long-term debt.
Schedule of indefinite-lived intangible assets	Our intangible assets consist of the following at the dates indicated: September 30, 2021 March 31, 2021 Description Amortizable Lives Gross Carrying Accumulated Net Gross Carrying Accumulated Net (in years) (in thousands) Amortizable: Customer relationships 3 - 25 $ 1,249,463 $ (456,015) $ 793,448 $ 1,318,638 $ (450,639) $ 867,999 Customer commitments 25 192,000 (17,280) 174,720 192,000 (13,440) 178,560 Pipeline capacity rights 30 7,799 (2,037) 5,762 7,799 (1,907) 5,892 Rights-of-way and easements 1 - 45 91,361 (10,863) 80,498 90,703 (9,270) 81,433 Water rights 13 - 30 100,369 (17,496) 82,873 100,369 (14,454) 85,915 Executory contracts and other agreements 1 - 35 34,975 (20,920) 14,055 48,709 (21,300) 27,409 Non-compete agreements 4 - 5 7,000 (5,639) 1,361 12,100 (6,102) 5,998 Debt issuance costs (1) 5 20,147 (2,651) 17,496 9,558 (406) 9,152 Total amortizable 1,703,114 (532,901) 1,170,213 1,779,876 (517,518) 1,262,358 Non-amortizable: Trade names 255 — 255 255 — 255 Total $ 1,703,369 $ (532,901) $ 1,170,468 $ 1,780,131 $ (517,518) $ 1,262,613 (1) Includes debt issuance costs related to the ABL Facility (as defined herein) and the Sawtooth credit agreement (as defined herein). Debt issuance costs related to the fixed-rate notes are reported as a reduction of the carrying amount of long-term debt.
Schedule of amortization expense	Amortization expense is as follows for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, Recorded In 2021 2020 2021 2020 (in thousands) Depreciation and amortization $ 21,718 $ 34,179 $ 45,214 $ 71,442 Cost of sales 71 76 144 153 Interest expense 1,693 1,560 2,375 3,092 Operating expenses 61 61 123 123 Total $ 23,543 $ 35,876 $ 47,856 $ 74,810
Schedule of expected amortization of intangible assets	Expected amortization of our intangible assets is as follows (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 41,625 2023 80,725 2024 74,385 2025 66,942 2026 64,229 2027 60,186 Thereafter 782,121 Total $ 1,170,213

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Schedule of long-term debt	Our long-term debt consists of the following at the dates indicated: September 30, 2021 March 31, 2021 Face Unamortized Book Face Unamortized Book (in thousands) Senior secured notes: 7.500% Notes due 2026 (“2026 Senior Secured Notes”) $ 2,050,000 $ (39,708) $ 2,010,292 $ 2,050,000 $ (44,246) $ 2,005,754 Asset-based revolving credit facility (“ABL Facility”) 146,000 — 146,000 4,000 — 4,000 Senior unsecured notes: 7.500% Notes due 2023 (“2023 Notes”) 519,496 (2,690) 516,806 555,251 (3,564) 551,687 6.125% Notes due 2025 (“2025 Notes”) 380,020 (2,876) 377,144 380,020 (3,297) 376,723 7.500% Notes due 2026 (“2026 Notes”) 332,402 (3,875) 328,527 338,402 (4,378) 334,024 Other long-term debt 42,926 (65) 42,861 49,095 (70) 49,025 3,470,844 (49,214) 3,421,630 3,376,768 (55,555) 3,321,213 Less: Current maturities 2,278 — 2,278 2,183 — 2,183 Long-term debt $ 3,468,566 $ (49,214) $ 3,419,352 $ 3,374,585 $ (55,555) $ 3,319,030 (1) Debt issuance costs related to the ABL Facility and the Sawtooth credit agreement (included in other long-term debt) are reported within intangible assets, rather than as a reduction of the carrying amount of long-term debt.
Schedule of repurchases	The following table summarizes repurchases of Senior Unsecured Notes for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2021 (in thousands) 2023 Notes Notes repurchased $ 17,088 $ 35,755 Cash paid (excluding payments of accrued interest) $ 16,536 $ 34,929 Gain on early extinguishment of debt (1) $ 461 $ 627 2026 Notes Notes repurchased $ 6,000 $ 6,000 Cash paid (excluding payments of accrued interest) $ 5,320 $ 5,320 Gain on early extinguishment of debt (2) $ 610 $ 610 (1) Gain on early extinguishment of debt for the three months and six months ended September 30, 2021 is inclusive of the write-off of debt issuance costs of $0.1 million and $0.2 million, respectively. The gain is reported within gain on early extinguishment of liabilities, net within our unaudited condensed consolidated statements of operations. (2) Gain on early extinguishment of debt for the three months and six months ended September 30, 2021 is inclusive of the write-off of debt issuance costs of $0.1 million and $0.1 million, respectively. The gain is reported within gain on early extinguishment of liabilities, net within our unaudited condensed consolidated statements of operations.
Schedule of maturities of long-term debt	The scheduled maturities of our long-term debt are as follows at September 30, 2021: Fiscal Year Ending March 31, 2026 Senior Secured Notes ABL Facility Senior Unsecured Notes Other Total (in thousands) 2022 (six months) $ — $ — $ — $ 1,013 $ 1,013 2023 — — — 2,585 2,585 2024 — — 519,496 2,816 522,312 2025 — — 380,020 3,068 383,088 2026 2,050,000 146,000 — 3,343 2,199,343 2027 — — 332,402 3,642 336,044 Thereafter — — — 26,459 26,459 Total $ 2,050,000 $ 146,000 $ 1,231,918 $ 42,926 $ 3,470,844
Schedule of future amortization expense of debt issuance costs	Expected amortization of debt issuance costs is as follows (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 6,076 2023 12,152 2024 11,618 2025 10,795 2026 8,521 2027 46 Thereafter 6 Total $ 49,214

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of change in asset retirement obligation	The following table summarizes changes in our asset retirement obligation, which is reported within other noncurrent liabilities in our unaudited condensed consolidated balance sheets (in thousands): Balance at March 31, 2021 $ 28,079 Liabilities incurred 1,848 Liabilities associated with disposition of Sawtooth (see Note 15) (1,612) Accretion expense 875 Balance at September 30, 2021 $ 29,190
Schedule of future minimum payments under contractual commitments	The following table summarizes future minimum payments under these agreements at September 30, 2021 (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 2,859 2023 5,859 2024 5,720 2025 1,181 2026 1,162 2027 1,154 Thereafter 5,386 Total $ 23,321
Schedule of future minimum payments under pipeline capacity agreements	The following table summarizes future minimum throughput payments under these agreements at September 30, 2021 (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 17,609 2023 35,314 2024 35,410 2025 30,897 Total $ 119,230
Schedule of outstanding purchase commitments	At September 30, 2021, we had the following commodity purchase commitments (in thousands): Crude Oil (1) Natural Gas Liquids Value Volume Value Volume Fixed-Price Commodity Purchase Commitments: 2022 (six months) $ 114,126 1,607 $ 16,624 21,046 2023 — — 3,546 4,788 2024 — — 1,946 2,772 Total $ 114,126 1,607 $ 22,116 28,606 Index-Price Commodity Purchase Commitments: 2022 (six months) $ 1,631,013 23,165 $ 1,031,514 740,186 2023 2,071,352 32,176 31,186 30,080 2024 1,720,969 28,920 15,855 25,200 2025 1,193,320 21,170 — — 2026 537,657 10,409 — — Total $ 7,154,311 115,840 $ 1,078,555 795,466 (1) Our crude oil index-price purchase commitments exceed our crude oil index-price sales commitments (presented below) due primarily to our long-term purchase commitments for crude oil that we purchase and ship on the Grand Mesa Pipeline. As these purchase commitments are deliver-or-pay contracts, whereby our counterparty is required to pay us for any volumes not delivered, we have not entered into corresponding long-term sales contracts for volumes we may not receive.
Schedule of outstanding sale commitments	At September 30, 2021, we had the following commodity sale commitments (in thousands): Crude Oil Natural Gas Liquids Value Volume Value Volume Fixed-Price Commodity Sale Commitments: 2022 (six months) $ 114,352 1,607 $ 186,391 164,404 2023 — — 15,692 18,366 2024 — — 3,064 4,169 2025 — — 38 40 Total $ 114,352 1,607 $ 205,185 186,979 Index-Price Commodity Sale Commitments: 2022 (six months) $ 1,309,659 17,599 $ 1,105,028 687,892 2023 728,712 10,640 33,823 23,791 2024 643,593 10,248 — — 2025 601,404 10,220 — — 2026 22,281 390 — — Total $ 3,305,649 49,097 $ 1,138,851 711,683

Equity (Tables)

Equity (Tables) - Service awards	6 Months Ended
	Sep. 30, 2021
Equity
Schedule of Service Awards activity	The following table summarizes the Service Award activity during the six months ended September 30, 2021: Unvested Service Award units at March 31, 2021 446,975 Units granted 3,294,750 Units forfeited (261,125) Unvested Service Award units at September 30, 2021 3,480,600
Schedule of scheduled vesting of Service Awards	The following table summarizes the scheduled vesting of our unvested Service Award units at September 30, 2021: Fiscal Year Ending March 31, 2022 (six months) 1,176,975 2023 1,535,625 2024 768,000 Total 3,480,600
Schedule of estimated future expense to be recorded for Service Awards	The following table summarizes the estimated future expense we expect to record on the unvested Service Award units at September 30, 2021 (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 1,382 2023 3,286 2024 1,375 Total $ 6,043

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Schedule of estimated fair value measurements of assets and liabilities	The following table summarizes the estimated fair values of our commodity derivative assets and liabilities reported in our unaudited condensed consolidated balance sheets at the dates indicated: September 30, 2021 March 31, 2021 Derivative Derivative Derivative Derivative (in thousands) Level 1 measurements $ 61,301 $ (35,321) $ 12,312 $ (17,857) Level 2 measurements 51,637 (35,764) 37,520 (24,474) 112,938 (71,085) 49,832 (42,331) Netting of counterparty contracts (1) (35,337) 35,337 (12,648) 12,648 Net cash collateral (held) provided (7,949) 6,808 2,660 5,543 Commodity derivatives $ 69,652 $ (28,940) $ 39,844 $ (24,140) (1) Relates to commodity derivative assets and liabilities that are expected to be net settled on an exchange or through a netting arrangement with the counterparty. Our physical contracts that do not qualify as normal purchase normal sale transactions are not subject to such netting arrangements.
Schedule of location of commodity derivative assets and liabilities reported in the unaudited condensed consolidated balance sheets	The following table summarizes the accounts that include our commodity derivative assets and liabilities in our unaudited condensed consolidated balance sheets at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) Prepaid expenses and other current assets $ 68,792 $ 39,844 Other noncurrent assets 860 — Accrued expenses and other payables (28,940) (21,562) Other noncurrent liabilities — (2,578) Net commodity derivative asset $ 40,712 $ 15,704
Schedule of open commodity derivative contract positions	The following table summarizes our open commodity derivative contract positions at the dates indicated. We do not account for these derivatives as hedges. Contracts Settlement Period Net Long Fair Value (in thousands) At September 30, 2021: Crude oil fixed-price (1) October 2021–December 2023 (1,152) $ 12,682 Propane fixed-price (1) October 2021–December 2023 1,284 35,880 Refined products fixed-price (1) October 2021–July 2022 (369) (6,081) Butane fixed-price (1) October 2021–December 2022 (697) (17,445) Other October 2021–December 2022 16,817 41,853 Net cash collateral held (1,141) Net commodity derivative asset $ 40,712 At March 31, 2021: Crude oil fixed-price (1) April 2021–December 2023 (1,850) $ (5,414) Propane fixed-price (1) April 2021–December 2023 (195) 2,188 Refined products fixed-price (1) April 2021–January 2022 (503) 1,928 Butane fixed-price (1) April 2021–March 2022 (753) (3,764) Other April 2021–June 2022 12,563 7,501 Net cash collateral provided 8,203 Net commodity derivative asset $ 15,704 (1) We may have fixed price physical purchases, including inventory, offset by floating price physical sales or floating price physical purchases offset by fixed price physical sales. These contracts are derivatives we have entered into as an economic hedge against the risk of mismatches between fixed and floating price physical obligations.
Schedule of fair value estimates of fixed-rate notes	The following table provides fair value estimates of our fixed-rate notes at September 30, 2021 (in thousands): Senior Secured Notes: 2026 Senior Secured Notes $ 2,088,438 Senior Unsecured Notes: 2023 Notes $ 503,478 2025 Notes $ 336,001 2026 Notes $ 295,838

Segments (Tables)

Segments (Tables)	6 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Schedule of certain information related to results of operations by segment	The following table summarizes revenues related to our segments for the periods indicated. Transactions between segments are recorded based on prices negotiated between the segments. The “Corporate and Other” category in the table below includes certain corporate expenses that are not allocated to the reportable segments. Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Revenues: Water Solutions: Topic 606 revenues Disposal service fees $ 101,892 $ 76,004 $ 200,189 $ 157,382 Sale of recovered crude oil 17,182 8,386 30,983 9,754 Sale of water 11,570 1,153 24,852 3,881 Other service revenues 5,566 3,135 10,412 5,726 Total Water Solutions revenues 136,210 88,678 266,436 176,743 Crude Oil Logistics: Topic 606 revenues Crude oil sales 536,067 418,174 1,071,496 648,902 Crude oil transportation and other 18,813 47,567 37,262 90,208 Non-Topic 606 revenues 2,120 3,105 4,365 6,274 Elimination of intersegment sales (2,170) (2,005) (4,669) (2,504) Total Crude Oil Logistics revenues 554,830 466,841 1,108,454 742,880 Liquids Logistics: Topic 606 revenues Refined products sales 444,268 288,781 837,377 499,328 Propane sales 219,297 136,538 379,700 258,066 Butane sales 167,337 89,920 285,877 145,117 Other product sales 139,566 90,418 253,896 138,753 Service revenues 3,065 6,683 8,488 13,025 Non-Topic 606 revenues 89,581 797 103,888 39,514 Elimination of intersegment sales (17) (813) (1,324) (1,481) Total Liquids Logistics revenues 1,063,097 612,324 1,867,902 1,092,322 Corporate and Other: Non-Topic 606 revenues — 315 — 628 Total Corporate and Other revenues — 315 — 628 Total $ 1,754,137 $ 1,168,158 $ 3,242,792 $ 2,012,573 The following tables summarize depreciation and amortization expense (including amortization expense recorded within interest expense, cost of sales and operating expenses in Note 5 and Note 6) and operating income (loss) by segment for the periods indicated. Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Depreciation and Amortization: Water Solutions $ 50,731 $ 62,282 $ 113,774 $ 120,477 Crude Oil Logistics 12,454 17,232 24,863 34,027 Liquids Logistics 4,758 7,102 11,803 15,335 Corporate and Other 6,500 4,210 11,984 8,667 Total $ 74,443 $ 90,826 $ 162,424 $ 178,506 Operating Income (Loss): Water Solutions $ 32,772 $ (13,277) $ 40,355 $ (29,324) Crude Oil Logistics 28,231 48,239 16,650 71,559 Liquids Logistics 11,461 14,338 (41,948) 18,900 Corporate and Other (7,646) (12,984) (19,573) (35,604) Total $ 64,818 $ 36,316 $ (4,516) $ 25,531
Schedule of additions to property, plant and equipment and intangible assets by segment	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. Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Water Solutions $ 33,591 $ 12,260 $ 60,553 $ 32,962 Crude Oil Logistics 1,008 3,098 1,471 8,770 Liquids Logistics 2,516 3,188 6,060 4,720 Corporate and Other 252 5,872 1,163 7,904 Total $ 37,367 $ 24,418 $ 69,247 $ 54,356
Schedule of long-lived assets (consisting of property, plant and equipment, intangible assets, operating lease right-of-use assets and goodwill) and total assets by segment	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: September 30, 2021 March 31, 2021 (in thousands) Long-lived assets, net: Water Solutions $ 3,043,245 $ 3,104,450 Crude Oil Logistics 1,073,603 1,090,578 Liquids Logistics (1) 403,552 626,221 Corporate and Other 52,662 44,802 Total $ 4,573,062 $ 4,866,051 (1) Includes $19.9 million and $20.9 million of non-US long-lived assets at September 30, 2021 and March 31, 2021, respectively. September 30, 2021 March 31, 2021 (in thousands) Total assets: Water Solutions $ 3,185,155 $ 3,204,850 Crude Oil Logistics 1,726,429 1,665,005 Liquids Logistics (1) 1,002,668 1,003,370 Corporate and Other 67,540 74,116 Total $ 5,981,792 $ 5,947,341

Transactions with Affiliates (T

Transactions with Affiliates (Tables)	6 Months Ended
	Sep. 30, 2021
Related Party Transactions [Abstract]
Schedule of related party transactions	The following table summarizes our related party transactions for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Sales to entities affiliated with management $ — $ 1,243 $ — $ 2,123 Purchases from entities affiliated with management $ 18 $ 224 $ 88 $ 291 Purchases from equity method investees $ 350 $ 292 $ 541 $ 745 Sales to WPX (1) $ 12,485 $ 22,241 Purchases from WPX (1) $ 82,287 $ 116,060 (1) As previously reported, a member of the board of directors of our general partner was an executive officer of WPX Energy, Inc. (“WPX”) and has subsequently retired. Therefore, we are no longer classifying transactions with WPX as a related party. The prior year amounts relate to purchases and sales of crude oil with WPX as well as the treatment and disposal of produced water and solids received from WPX. Accounts receivable from affiliates consist of the following at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) NGL Energy Holdings LLC $ 8,775 $ 8,245 Equity method investees 203 462 Entities affiliated with management 1 728 Total $ 8,979 $ 9,435 Accounts payable to affiliates consist of the following at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) Equity method investees $ 96 $ 107 Entities affiliated with management 1 12 Total $ 97 $ 119

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Tables)	6 Months Ended
	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Schedule of amount and timing of remaining performance obligations	The following table summarizes the amount and timing of revenue recognition for such contracts at September 30, 2021 (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 63,962 2023 103,596 2024 85,147 2025 62,441 2026 17,215 2027 3,702 Thereafter 1,964 Total $ 338,027
Schedule of contract assets and liabilities	The following tables summarize the balances of our contract assets and liabilities at the dates indicated: September 30, 2021 March 31, 2021 (in thousands) Accounts receivable from contracts with customers $ 463,010 $ 436,682 Contract liabilities balance at March 31, 2021 $ 10,896 Payment received and deferred 30,591 Payment recognized in revenue (14,864) Disposition of Sawtooth (see Note 15) (8,234) Contract liabilities balance at September 30, 2021 $ 18,389

Leases (Tables)

Leases (Tables)	6 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Schedule of components of lease expense	The following table summarizes the components of our lease expense for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2021 2020 2021 2020 (in thousands) Operating lease expense $ 15,020 $ 17,953 $ 30,294 $ 36,230 Variable lease expense 5,023 4,334 10,253 9,213 Short-term lease expense 89 405 159 801 Total $ 20,132 $ 22,692 $ 40,706 $ 46,244
Schedule of maturities of operating lease obligations	The following table summarizes maturities of our operating lease obligations at September 30, 2021 (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 26,546 2023 44,809 2024 28,814 2025 16,701 2026 8,419 2027 4,596 Thereafter 38,687 Total lease payments 168,572 Less imputed interest (35,728) Total operating lease obligations $ 132,844
Schedule of supplemental cash flow and non-cash information for operating leases	The following table summarizes supplemental cash flow and non-cash information related to our operating leases for the periods indicated: Six Months Ended September 30, 2021 2020 (in thousands) Cash paid for amounts included in the measurement of operating lease obligations $ 30,267 $ 36,135 Operating lease right-of-use assets obtained in exchange for operating lease obligations $ 10,386 $ 19,257
Schedule of future minimum lease payments receivable under contractual commitments	The following table summarizes future minimum lease payments receivable under various noncancelable operating lease agreements at September 30, 2021 (in thousands): Fiscal Year Ending March 31, 2022 (six months) $ 5,791 2023 9,632 2024 4,820 2025 691 2026 415 2027 415 Thereafter 422 Total $ 22,186

Allowance for Current Expecte_3

Allowance for Current Expected Credit Loss (Tables)	6 Months Ended
	Sep. 30, 2021
Credit Loss [Abstract]
Schedule of allowance for expected credit losses	The following table summarizes changes in our allowance for expected credit losses: Accounts Receivable - Trade Notes Receivable and Other (in thousands) Balance at March 31, 2021 $ 2,192 $ 458 Change in provision for expected credit losses 96 — Write-offs charged against the provision (27) — Disposition of Sawtooth (see Note 15) (4) — Balance at September 30, 2021 $ 2,257 $ 458

Discontinued Operations (Tables

Discontinued Operations (Tables)	6 Months Ended
	Sep. 30, 2021
Discontinued Operations and Disposal Groups [Abstract]
Schedule of results of operations of discontinued operations	The following table summarizes the results of operations from discontinued operations for the periods indicated: Three Months Ended September 30, Six Months Ended September 30, 2020 2020 (in thousands) Revenues $ — $ 16,198 Cost of sales 118 16,429 Operating expenses 72 280 Loss on disposal or impairment of assets, net (1) 116 1,181 Operating loss from discontinued operations (306) (1,692) Interest expense 100 — Loss from discontinued operations before taxes (206) (1,692) Income tax benefit 53 53 Loss from discontinued operations, net of tax $ (153) $ (1,639) (1) Amount for the three months ended September 30, 2020 includes a loss of $0.1 million on the sale of TPSL and amount for the six months ended September 30, 2020 includes a loss of $1.0 million on the sale of Gas Blending and a loss of $0.2 million on the sale of TPSL.

Organization and Operations (De

Organization and Operations (Details)	6 Months Ended
	Sep. 30, 2021
Business Acquisition
Number of segments	3
Liquids logistics
Business Acquisition
Number of owned terminals	26

Significant Accounting Polici_4

Significant Accounting Policies - Income Taxes (Details) - USD ($) $ in Millions	6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2021
Accounting Policies [Abstract]
Deferred tax liability	$ 44.1		$ 45.8
Deferred tax benefit	$ 1.6	$ 1.8
Effective tax rate	23.10%	23.80%

Significant Accounting Polici_5

Significant Accounting Policies - Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021
Inventory
Propane	$ 111,648	$ 45,521
Crude oil	87,923	64,916
Total	319,895	158,467
Butane Inventory
Inventory
Energy Related Inventory, Natural Gas Liquids	88,163	19,189
Biodiesel Inventory
Inventory
Renewable Energy Related Inventory	12,658	16,169
Diesel Inventory
Inventory
Energy Related Inventory, Crude Oil, Products and Merchandise	5,742	2,252
Ethanol Inventory
Inventory
Renewable Energy Related Inventory	2,802	3,056
Other natural gas liquids
Inventory
Energy Related Inventory, Natural Gas Liquids	$ 10,959	$ 7,364

Significant Accounting Polici_6

Significant Accounting Policies - Investments in Unconsolidated Entities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021
Investments in Unconsolidated Entities
Carrying value	$ 21,029	$ 22,719
Water Services and Land Company No. 1 | Water solutions | Operating segment
Investments in Unconsolidated Entities
Ownership interest	50.00%
Carrying value	$ 14,889	15,832
Water Services and Land Company No. 2 | Water solutions | Operating segment
Investments in Unconsolidated Entities
Ownership interest	50.00%
Carrying value	$ 2,047	2,284
Water Services and Land Company No. 3 | Water solutions | Operating segment
Investments in Unconsolidated Entities
Ownership interest	10.00%
Carrying value	$ 2,897	3,254
Aircraft Company | Corporate and other | Operating segment
Investments in Unconsolidated Entities
Ownership interest	50.00%
Carrying value	$ 640	748
Water Services Company | Water solutions | Operating segment
Investments in Unconsolidated Entities
Ownership interest	50.00%
Carrying value	$ 414	424
Natural Gas Liquids Terminal Company | Liquids logistics | Operating segment
Investments in Unconsolidated Entities
Ownership interest	50.00%
Carrying value	$ 142	$ 177

Significant Accounting Polici_7

Significant Accounting Policies - Other Noncurrent Assets (Details) $ in Thousands	Sep. 30, 2021USD ($)bbl	Mar. 31, 2021USD ($)bbl
Other Assets, Noncurrent [Abstract]
Loan receivable	$ 3,053	$ 2,962
Linefill	28,065	28,110
Other	7,481	6,490
OTHER NONCURRENT ASSETS	49,634	50,733
Other Noncurrent Assets
Minimum shipping fees - pipeline commitments	15,300
Other noncurrent assets
Other Noncurrent Assets
Minimum shipping fees - pipeline commitments	11,035	$ 13,171
Prepaid expenses and other current assets
Other Noncurrent Assets
Minimum shipping fees - pipeline commitments	$ 4,300
Crude oil
Other Noncurrent Assets
Number of barrels of product | bbl	423,978	423,978

Significant Accounting Polici_8

Significant Accounting Policies - Accrued Expenses and Other Payables (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021
Accounting Policies [Abstract]
Accrued interest	$ 57,311	$ 56,299
Derivative liabilities	28,940	21,562
Accrued compensation and benefits	24,659	41,456
Excise and other tax liabilities	13,274	10,970
Product exchange liabilities	13,237	1,188
Other	27,689	38,925
Total	$ 165,110	$ 170,400

Loss Per Common Unit (Details)

Loss Per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Loss Per Common Unit
(Loss) income from continuing operations	$ (1,207)	$ 5,988	$ (135,709)	$ (27,778)
Less: Continuing operations income attributable to noncontrolling interests	(330)	(168)	(768)	(219)
Net (loss) income from continuing operations attributable to NGL Energy Partners LP	(1,537)	5,820	(136,477)	(27,997)
Less: Distributions to preferred unitholders (1)	(25,726)	(23,770)	(50,837)	(45,824)
Less: Continuing operations net loss allocated to general partner (2)	27	17	186	73
NET LOSS FROM CONTINUING OPERATIONS ALLOCATED TO COMMON UNITHOLDERS (NOTE 3)	(27,236)	(17,933)	(187,128)	(73,748)
Loss from discontinued operations, net of tax	0	(153)	0	(1,639)
Less: Discontinued operations loss allocated to general partner (2)	0	1	0	2
NET LOSS FROM DISCONTINUED OPERATIONS ALLOCATED TO COMMON UNITHOLDERS (NOTE 3)	0	(152)	0	(1,637)
NET LOSS ALLOCATED TO COMMON UNITHOLDERS (NOTE 3)	$ (27,236)	$ (18,085)	$ (187,128)	$ (75,385)
BASIC LOSS PER COMMON UNIT
Loss From Continuing Operations	$ (0.21)	$ (0.14)	$ (1.44)	$ (0.57)
Loss From Discontinued Operations, net of Tax	0	0	0	(0.01)
Net Loss	(0.21)	(0.14)	(1.44)	(0.58)
DILUTED LOSS PER COMMON UNIT
Loss From Continuing Operations	(0.21)	(0.14)	(1.44)	(0.57)
Loss From Discontinued Operations, net of Tax	0	0	0	(0.01)
Net Loss	$ (0.21)	$ (0.14)	$ (1.44)	$ (0.58)
Basic weighted average common units outstanding (in units)	129,593,939	128,771,715	129,593,939	128,771,715
DILUTED WEIGHTED AVERAGE COMMON UNITS OUTSTANDING (in units)	129,593,939	128,771,715	129,593,939	128,771,715
Common units
BASIC LOSS PER COMMON UNIT
Loss From Continuing Operations	$ (0.21)	$ (0.14)
Loss From Discontinued Operations, net of Tax	0	0
Net Loss	(0.21)	(0.14)
DILUTED LOSS PER COMMON UNIT
Loss From Continuing Operations	(0.21)	(0.14)
Loss From Discontinued Operations, net of Tax	0	0
Net Loss	$ (0.21)	$ (0.14)
Basic weighted average common units outstanding (in units)	129,593,939	128,771,715	129,593,939	128,771,715
DILUTED WEIGHTED AVERAGE COMMON UNITS OUTSTANDING (in units)	129,593,939	128,771,715	129,593,939	128,771,715

Property, Plant and Equipment_2

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2021
Property, Plant and Equipment
Gross property, plant and equipment	$ 3,368,892		$ 3,368,892		$ 3,483,132
Accumulated depreciation	(844,605)		(844,605)		(776,279)
Net property, plant and equipment	2,524,287		2,524,287		2,706,853
Depreciation expense	47,845	$ 53,290	108,451	$ 100,013
Capitalized interest expense	324	445	656	2,113
Gain (loss) on sales and write-downs of certain assets	13,058	6,455	20,482	8,629
Water solutions
Property, Plant and Equipment
Gain (loss) on sales and write-downs of certain assets	1,296	6,414	8,785	6,740
Crude oil logistics
Property, Plant and Equipment
Gain (loss) on sales and write-downs of certain assets	(14)	0	(56)	1,844
Liquids logistics
Property, Plant and Equipment
Gain (loss) on sales and write-downs of certain assets	11,776	43	11,753	47
Corporate and Other
Property, Plant and Equipment
Gain (loss) on sales and write-downs of certain assets	0	$ (2)	0	$ (2)
Natural gas liquids terminal and storage assets
Property, Plant and Equipment
Gross property, plant and equipment	165,267		$ 165,267		319,554
Natural gas liquids terminal and storage assets | Minimum
Property, Plant and Equipment
Useful life			2 years
Natural gas liquids terminal and storage assets | Maximum
Property, Plant and Equipment
Useful life			30 years
Pipeline and related facilities
Property, Plant and Equipment
Gross property, plant and equipment	264,605		$ 264,605		264,405
Pipeline and related facilities | Minimum
Property, Plant and Equipment
Useful life			30 years
Pipeline and related facilities | Maximum
Property, Plant and Equipment
Useful life			40 years
Vehicles and railcars
Property, Plant and Equipment
Gross property, plant and equipment	125,960		$ 125,960		126,088
Vehicles and railcars | Minimum
Property, Plant and Equipment
Useful life			3 years
Vehicles and railcars | Maximum
Property, Plant and Equipment
Useful life			25 years
Water treatment facilities and equipment
Property, Plant and Equipment
Gross property, plant and equipment	2,044,610		$ 2,044,610		1,930,437
Water treatment facilities and equipment | Minimum
Property, Plant and Equipment
Useful life			3 years
Water treatment facilities and equipment | Maximum
Property, Plant and Equipment
Useful life			30 years
Crude oil tanks and related equipment
Property, Plant and Equipment
Gross property, plant and equipment	236,305		$ 236,305		238,924
Crude oil tanks and related equipment | Minimum
Property, Plant and Equipment
Useful life			2 years
Crude oil tanks and related equipment | Maximum
Property, Plant and Equipment
Useful life			30 years
Barges and towboats
Property, Plant and Equipment
Gross property, plant and equipment	137,603		$ 137,603		137,386
Barges and towboats | Minimum
Property, Plant and Equipment
Useful life			5 years
Barges and towboats | Maximum
Property, Plant and Equipment
Useful life			30 years
Information technology equipment
Property, Plant and Equipment
Gross property, plant and equipment	47,275		$ 47,275		50,220
Information technology equipment | Minimum
Property, Plant and Equipment
Useful life			3 years
Information technology equipment | Maximum
Property, Plant and Equipment
Useful life			7 years
Buildings and leasehold improvements
Property, Plant and Equipment
Gross property, plant and equipment	156,570		$ 156,570		165,679
Buildings and leasehold improvements | Minimum
Property, Plant and Equipment
Useful life			3 years
Buildings and leasehold improvements | Maximum
Property, Plant and Equipment
Useful life			40 years
Land
Property, Plant and Equipment
Gross property, plant and equipment	100,874		$ 100,874		100,352
Tank bottoms and line fill
Property, Plant and Equipment
Gross property, plant and equipment	29,099		29,099		20,237
Other
Property, Plant and Equipment
Gross property, plant and equipment	15,317		$ 15,317		15,054
Other | Minimum
Property, Plant and Equipment
Useful life			3 years
Other | Maximum
Property, Plant and Equipment
Useful life			20 years
Construction in progress
Property, Plant and Equipment
Gross property, plant and equipment	$ 45,407		$ 45,407		$ 114,796

Intangible Assets (Details)

Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2021	Mar. 31, 2021
Amortizable
Finite-lived intangible assets, gross	$ 1,703,114	$ 1,779,876
Accumulated amortization	(532,901)	(517,518)
Total	1,170,213	1,262,358
Gross carrying amount of intangible assets	1,703,369	1,780,131
INTANGIBLE ASSETS, net of accumulated amortization of $532,901 and $517,518, respectively	$ 1,170,468	1,262,613
Weighted-average remaining amortization period for intangible assets	20 years 7 months 6 days
Sawtooth Credit Agreement
Non-Amortizable
Write off of debt issuance costs	$ 100
Trade names
Non-Amortizable
Indefinite-lived intangible assets	255	255
Customer relationships
Amortizable
Finite-lived intangible assets, gross	1,249,463	1,318,638
Accumulated amortization	(456,015)	(450,639)
Total	$ 793,448	867,999
Customer relationships | Minimum
Amortizable
Amortizable life	3 years
Customer relationships | Maximum
Amortizable
Amortizable life	25 years
Customer commitments
Amortizable
Amortizable life	25 years
Finite-lived intangible assets, gross	$ 192,000	192,000
Accumulated amortization	(17,280)	(13,440)
Total	$ 174,720	178,560
Pipeline capacity rights
Amortizable
Amortizable life	30 years
Finite-lived intangible assets, gross	$ 7,799	7,799
Accumulated amortization	(2,037)	(1,907)
Total	5,762	5,892
Rights-of-way and easements
Amortizable
Finite-lived intangible assets, gross	91,361	90,703
Accumulated amortization	(10,863)	(9,270)
Total	$ 80,498	81,433
Rights-of-way and easements | Minimum
Amortizable
Amortizable life	1 year
Rights-of-way and easements | Maximum
Amortizable
Amortizable life	45 years
Water rights
Amortizable
Finite-lived intangible assets, gross	$ 100,369	100,369
Accumulated amortization	(17,496)	(14,454)
Total	$ 82,873	85,915
Water rights | Minimum
Amortizable
Amortizable life	13 years
Water rights | Maximum
Amortizable
Amortizable life	30 years
Executory contracts and other agreements
Amortizable
Finite-lived intangible assets, gross	$ 34,975	48,709
Accumulated amortization	(20,920)	(21,300)
Total	$ 14,055	27,409
Executory contracts and other agreements | Minimum
Amortizable
Amortizable life	1 year
Executory contracts and other agreements | Maximum
Amortizable
Amortizable life	35 years
Non-compete agreements
Amortizable
Finite-lived intangible assets, gross	$ 7,000	12,100
Accumulated amortization	(5,639)	(6,102)
Total	$ 1,361	5,998
Non-compete agreements | Minimum
Amortizable
Amortizable life	4 years
Non-compete agreements | Maximum
Amortizable
Amortizable life	5 years
Debt issuance costs
Amortizable
Amortizable life	5 years
Finite-lived intangible assets, gross	$ 20,147	9,558
Accumulated amortization	(2,651)	(406)
Total	$ 17,496	$ 9,152

Intangible Assets - Amortizatio

Intangible Assets - Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2021
Amortization related to intangible assets
Amortization expense	$ 23,543	$ 35,876	$ 47,856	$ 74,810
Future amortization expense of intangible assets
2022 (six months)	41,625		41,625
2023	80,725		80,725
2024	74,385		74,385
2025	66,942		66,942
2026	64,229		64,229
2027	60,186		60,186
Thereafter	782,121		782,121
Total	1,170,213		1,170,213		$ 1,262,358
Depreciation and amortization
Amortization related to intangible assets
Amortization expense	21,718	34,179	45,214	71,442
Cost of sales
Amortization related to intangible assets
Amortization expense	71	76	144	153
Interest expense
Amortization related to intangible assets
Amortization expense	1,693	1,560	2,375	3,092
Operating expenses
Amortization related to intangible assets
Amortization expense	$ 61	$ 61	$ 123	$ 123

Long-Term Debt (Details)

Long-Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021	Feb. 04, 2021
Long-Term Debt
Face amount	$ 3,470,844	$ 3,376,768
Face amount, current portion	2,278	2,183
Face amount, long-term	3,468,566	3,374,585
LONG-TERM DEBT, debt issuance costs	(49,214)	(55,555)
Debt issuance costs, current, net	0	0
Debt issuance costs, noncurrent, net	(49,214)	(55,555)
Book value	3,421,630	3,321,213
Book value, current	2,278	2,183
LONG-TERM DEBT, net of debt issuance costs and current maturities	$ 3,419,352	3,319,030
7.5% Senior Secured Notes due 2026
Long-Term Debt
Fixed interest rate	7.50%		7.50%
Face amount	$ 2,050,000	2,050,000
LONG-TERM DEBT, debt issuance costs	(39,708)	(44,246)
Book value	2,010,292	2,005,754
Asset Based Credit Facility
Long-Term Debt
Face amount	146,000	4,000
LONG-TERM DEBT, debt issuance costs	0	0
Book value	$ 146,000	4,000
7.5% Senior Notes due 2023
Long-Term Debt
Fixed interest rate	7.50%
Face amount	$ 519,496	555,251
LONG-TERM DEBT, debt issuance costs	(2,690)	(3,564)
Book value	$ 516,806	551,687
6.125% Senior Notes due 2025
Long-Term Debt
Fixed interest rate	6.125%
Face amount	$ 380,020	380,020
LONG-TERM DEBT, debt issuance costs	(2,876)	(3,297)
Book value	$ 377,144	376,723
7.5% Senior Notes due 2026
Long-Term Debt
Fixed interest rate	7.50%
Face amount	$ 332,402	338,402
LONG-TERM DEBT, debt issuance costs	(3,875)	(4,378)
Book value	328,527	334,024
Other long-term debt
Long-Term Debt
Face amount	42,926	49,095
LONG-TERM DEBT, debt issuance costs	(65)	(70)
Book value	$ 42,861	$ 49,025

Long-Term Debt - 2026 Senior Se

Long-Term Debt - 2026 Senior Secured Notes (Details) - 7.5% Senior Secured Notes due 2026	Feb. 04, 2021	Sep. 30, 2021
Long-Term Debt
Fixed interest rate	7.50%	7.50%
Debt instrument, total leverage ratio	4.75

Long-Term Debt - Asset Based Cr

Long-Term Debt - Asset Based Credit Facility (Details) - USD ($) $ in Millions	Feb. 04, 2021	Sep. 30, 2021
Asset Based Credit Facility
Long-Term Debt
Interest rate		4.89%
Asset Based Credit Facility
Long-Term Debt
Maximum borrowing capacity	$ 500
ABL Facility, expiration description	The ABL Facility is scheduled to mature at the earliest of (a) February 4, 2026 or (b) 91 days prior to the earliest maturity date in respect to any of our indebtedness in an aggregate principal amount of $50.0 million or greater, if such indebtedness is outstanding at such time, subject to certain exceptions.
Asset Based Credit Facility | Prime rate
Long-Term Debt
Interest rate margin added to variable rate base		2.00%
Reference rate		3.25%
Asset Based Credit Facility | LIBOR option
Long-Term Debt
Interest rate margin added to variable rate base		3.00%
Reference rate		0.50%
Asset Based Credit Facility | Letter of Credit
Long-Term Debt
Maximum borrowing capacity	$ 200
Outstanding letters of credit		$ 152.2
Fixed interest rate		3.00%

Long-Term Debt - Senior Unsecur

Long-Term Debt - Senior Unsecured Notes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Long-Term Debt
Notes repurchased			$ 0	$ 250,000
Cash paid (excluding payments of accrued interest)			40,249	54,499
Gain on early extinguishment of liabilities, net	$ 1,071	$ 13,747	1,122	$ 33,102
7.5% Senior Notes due 2023
Long-Term Debt
Notes repurchased	17,088		35,755
Cash paid (excluding payments of accrued interest)	16,536		34,929
Gain on early extinguishment of liabilities, net	461		627
Write off of debt issuance costs	100		200
7.5% Senior Notes due 2026
Long-Term Debt
Notes repurchased	6,000		6,000
Cash paid (excluding payments of accrued interest)	5,320		5,320
Gain on early extinguishment of liabilities, net	610		610
Write off of debt issuance costs	$ 100		$ 100

Long-Term Debt - Equipment Loan

Long-Term Debt - Equipment Loan (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021	Oct. 29, 2020
Long-Term Debt
Face amount	$ 3,470,844	$ 3,376,768
Equipment loan secured by certain barges and towboats
Long-Term Debt
Face amount	$ 42,900		$ 45,000
Fixed interest rate			8.60%

Long-Term Debt - Debt Maturity

Long-Term Debt - Debt Maturity Schedule (Details) $ in Thousands	Sep. 30, 2021USD ($)
Maturities
2022 (six months)	$ 1,013
2023	2,585
2024	522,312
2025	383,088
2026	2,199,343
2027	336,044
Thereafter	26,459
Total	3,470,844
7.5% Senior Secured Notes due 2026
Maturities
2022 (six months)	0
2023	0
2024	0
2025	0
2026	2,050,000
2027	0
Thereafter	0
Total	2,050,000
Asset Based Credit Facility
Maturities
2022 (six months)	0
2023	0
2024	0
2025	0
2026	146,000
2027	0
Thereafter	0
Total	146,000
Senior Unsecured Notes
Maturities
2022 (six months)	0
2023	0
2024	519,496
2025	380,020
2026	0
2027	332,402
Thereafter	0
Total	1,231,918
Other long-term debt
Maturities
2022 (six months)	1,013
2023	2,585
2024	2,816
2025	3,068
2026	3,343
2027	3,642
Thereafter	26,459
Total	$ 42,926

Long-Term Debt - Amortization o

Long-Term Debt - Amortization of Debt Issuance Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Debt Disclosure [Abstract]
Amortization of debt issuance costs	$ 3,100	$ 1,700	$ 6,100	$ 3,700
Expected Future Amortization of Debt Issuance Costs
2022 (six months)	6,076		6,076
2023	12,152		12,152
2024	11,618		11,618
2025	10,795		10,795
2026	8,521		8,521
2027	46		46
Thereafter	6		6
Total	$ 49,214		$ 49,214

Commitments and Contingencies -

Commitments and Contingencies - Legal Contingencies (Details) $ in Millions	6 Months Ended
	Sep. 30, 2021USD ($)
Loss Contingencies
Loss contingency accrual	$ 2.5
Services Rendered
Loss Contingencies
Damages awarded	4
Fraudulent Misrepresentation
Loss Contingencies
Damages awarded	$ 29

Commitments and Contingencies_2

Commitments and Contingencies - Environmental Matters (Details) $ in Millions	Sep. 30, 2021USD ($)
Commitments and Contingencies Disclosure [Abstract]
Environmental matters liability	$ 1.5

Commitments and Contingencies_3

Commitments and Contingencies - Asset Retirement Obligations (Details) $ in Thousands	6 Months Ended
	Sep. 30, 2021USD ($)
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance at beginning of period	$ 28,079
Liabilities incurred	1,848
Liabilities associated with disposition of Sawtooth (see Note 15)	(1,612)
Accretion expense	875
Balance at end of period	$ 29,190

Commitments and Contingencies_4

Commitments and Contingencies - Other Commitments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Future minimum payments
2022 (six months)	$ 2,859		$ 2,859
2023	5,859		5,859
2024	5,720		5,720
2025	1,181		1,181
2026	1,162		1,162
2027	1,154		1,154
Thereafter	5,386		5,386
Total	23,321		23,321
Hillstone Subsidy Payment
Other Commitments
Subsidy payment	600	$ 700	1,200	$ 1,400
Minimum | Hillstone Subsidy Payment
Other Commitments
Contractual obligation	0		0
Maximum | Hillstone Subsidy Payment
Other Commitments
Contractual obligation	$ 4,100		$ 4,100

Commitments and Contingencies_5

Commitments and Contingencies - Pipeline Capacity Agreements (Details) $ in Thousands	6 Months Ended
	Sep. 30, 2021USD ($)
Customer contracts
Future minimum throughput payments
Number of months to continue shipping after maturity date of contract	6 months
Pipeline capacity agreements
Future minimum throughput payments
2022 (six months)	$ 17,609
2023	35,314
2024	35,410
2025	30,897
Total	$ 119,230

Commitments and Contingencies_6

Commitments and Contingencies - Purchase Commitments (Details) gal in Thousands, bbl in Thousands, $ in Thousands	Sep. 30, 2021USD ($)galbbl
Crude oil
Purchase commitments for crude oil and natural gas
Fixed-price purchase commitments, due in remainder of fiscal year	$ 114,126
Fixed-price purchase commitments volume, due in remainder of fiscal year | bbl	1,607
Fixed-price purchase commitments, due in first year	$ 0
Fixed-price purchase commitments volume, due in first year | bbl	0
Fixed-price purchase commitments, due in second year	$ 0
Fixed-price purchase commitments volume, due in second year | bbl	0
Total fixed-price purchase commitments	$ 114,126
Total fixed-price purchase commitments volume | bbl	1,607
Index-price purchase commitments, due remainder of fiscal year	$ 1,631,013
Index-price purchase commitments volume, due in remainder of fiscal year | bbl	23,165
Index-price purchase commitments, due in first year	$ 2,071,352
Index-price purchase commitments volume, due in first year | bbl	32,176
Index-price purchase commitments, due in second year	$ 1,720,969
Index-price purchase commitments volume, due in second year | bbl	28,920
Index-price purchase commitments, due in third year	$ 1,193,320
Index-price purchase commitments volume, due in third year | bbl	21,170
Index-price purchase commitments, due in fourth year	$ 537,657
Index-price purchase commitments volume, due in fourth year | bbl	10,409
Total index-price purchase commitments	$ 7,154,311
Total index-price purchase commitments volume | bbl	115,840
Natural gas liquids
Purchase commitments for crude oil and natural gas
Fixed-price purchase commitments, due in remainder of fiscal year	$ 16,624
Fixed-price purchase commitments volume, due in remainder of fiscal year | gal	21,046
Fixed-price purchase commitments, due in first year	$ 3,546
Fixed-price purchase commitments volume, due in first year | gal	4,788
Fixed-price purchase commitments, due in second year	$ 1,946
Fixed-price purchase commitments volume, due in second year | gal	2,772
Total fixed-price purchase commitments	$ 22,116
Total fixed-price purchase commitments volume | gal	28,606
Index-price purchase commitments, due remainder of fiscal year	$ 1,031,514
Index-price purchase commitments volume, due in remainder of fiscal year | gal	740,186
Index-price purchase commitments, due in first year	$ 31,186
Index-price purchase commitments volume, due in first year | gal	30,080
Index-price purchase commitments, due in second year	$ 15,855
Index-price purchase commitments volume, due in second year | gal	25,200
Index-price purchase commitments, due in third year	$ 0
Index-price purchase commitments volume, due in third year | gal	0
Index-price purchase commitments, due in fourth year	$ 0
Index-price purchase commitments volume, due in fourth year | gal	0
Total index-price purchase commitments	$ 1,078,555
Total index-price purchase commitments volume | gal	795,466

Commitments and Contingencies_7

Commitments and Contingencies - Sale Commitments (Details) gal in Thousands, bbl in Thousands, $ in Thousands	Sep. 30, 2021USD ($)galbbl	Mar. 31, 2021USD ($)
Sale commitments for crude oil and natural gas
Net commodity derivative asset	$ 40,712	$ 15,704
Crude oil
Sale commitments for crude oil and natural gas
Fixed-price sale commitments, due in remainder of fiscal year	$ 114,352
Fixed-price sale commitments volume, due in remainder of fiscal year | bbl	1,607
Fixed-price sale commitments, due in first year	$ 0
Fixed-price sale commitments volume, due in first year | bbl	0
Fixed-price sale commitments, due in second year	$ 0
Fixed-price sale commitments volume, due in second year | bbl	0
Fixed-price sale commitments, due in third year	$ 0
Fixed-price sale commitments volume, due in third year | bbl	0
Total fixed-price sale commitments	$ 114,352
Total fixed-price sale commitments volume | bbl	1,607
Index-price sale commitments, due in remainder of fiscal year	$ 1,309,659
Index-price sale commitments volume, due in remainder of fiscal year | bbl	17,599
Index-price sale commitments, due in first year	$ 728,712
Index-price sale commitments volume, due in first year | bbl	10,640
Index-price sale commitments, due in second year	$ 643,593
Index-price sale commitments volume, due in second year | bbl	10,248
Index-price sale commitments, due in third year	$ 601,404
Index-price sale commitments volume, due in third year | bbl	10,220
Index-price sale commitments, due in fourth year	$ 22,281
Index-price sale commitments volume, due in fourth year | bbl	390
Total index-price sale commitments	$ 3,305,649
Total index-price sale commitment volume | bbl	49,097
Natural gas liquids
Sale commitments for crude oil and natural gas
Fixed-price sale commitments, due in remainder of fiscal year	$ 186,391
Fixed-price sale commitments volume, due in remainder of fiscal year | gal	164,404
Fixed-price sale commitments, due in first year	$ 15,692
Fixed-price sale commitments volume, due in first year | gal	18,366
Fixed-price sale commitments, due in second year	$ 3,064
Fixed-price sale commitments volume, due in second year | gal	4,169
Fixed-price sale commitments, due in third year	$ 38
Fixed-price sale commitments volume, due in third year | gal	40
Total fixed-price sale commitments	$ 205,185
Total fixed-price sale commitments volume | gal	186,979
Index-price sale commitments, due in remainder of fiscal year	$ 1,105,028
Index-price sale commitments volume, due in remainder of fiscal year | gal	687,892
Index-price sale commitments, due in first year	$ 33,823
Index-price sale commitments volume, due in first year | gal	23,791
Index-price sale commitments, due in second year	$ 0
Index-price sale commitments volume, due in second year | gal	0
Index-price sale commitments, due in third year	$ 0
Index-price sale commitments volume, due in third year | gal	0
Index-price sale commitments, due in fourth year	$ 0
Index-price sale commitments volume, due in fourth year | gal	0
Total index-price sale commitments	$ 1,138,851
Total index-price sale commitment volume | gal	711,683
Prepaid expenses and other current assets
Sale commitments for crude oil and natural gas
Net commodity derivative asset	$ 51,600
Accrued expenses and other payables
Sale commitments for crude oil and natural gas
Net commodity derivative asset	$ 29,000

Equity - Partnership Equity and

Equity - Partnership Equity and Common Unit Repurchase Program (Details) - USD ($) $ in Millions	6 Months Ended
	Sep. 30, 2021	Aug. 30, 2019
Share Repurchase Program
Equity
Common unit repurchase program, authorized amount		$ 150
Common units
Equity
Ownership interest in NGL Energy Holdings LLC	8.69%
General Partner
Equity
General partner interest	0.10%
General Partner | Common units
Equity
General partner interest	0.10%
Limited Partner
Equity
Limited partner interest	99.90%

Equity - Class B Preferred Unit

Equity - Class B Preferred Units (Details) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2021$ / sharesshares	Sep. 30, 2021shares	Sep. 30, 2021USD ($)$ / sharesshares
Preferred Class B
Preferred Units
Preferred units, dividend payment terms		The current distribution rate for the Class B Preferred Units is 9.00% per year of the $25.00 liquidation preference per unit (equal to $2.25 per unit per year).
Preferred Class B
Preferred Units
Preferred units, issued and outstanding (in units) | shares	12,585,642	12,585,642	12,585,642
Preferred units dividend rate		9.00%
Distributions earned during the quarter but not paid	$ 0.5625
Preferred Class B | Cumulative distributions
Preferred Units
Distributions earned but not declared			$ 1.6875
Cumulative distributions earned but not paid including accumulated interest | $			$ 21,700

Equity - Class C Preferred Unit

Equity - Class C Preferred Units (Details) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2021$ / sharesshares	Sep. 30, 2021shares	Sep. 30, 2021USD ($)$ / sharesshares
Class C Perpetual Preferred Units
Preferred Units
Preferred units, dividend payment terms		The current distribution rate for the Class C Preferred Units is 9.625% per year of the $25.00 liquidation preference per unit (equal to $2.41 per unit per year).
Class C Perpetual Preferred Units
Preferred Units
Preferred units, issued and outstanding (in units) | shares	1,800,000	1,800,000	1,800,000
Preferred units dividend rate		9.625%
Distributions earned during the quarter but not paid	$ 0.6016
Class C Perpetual Preferred Units | Cumulative distributions
Preferred Units
Distributions earned but not declared			$ 1.8047
Cumulative distributions earned but not paid including accumulated interest | $			$ 3,300

Equity - Class D Preferred Unit

Equity - Class D Preferred Units (Details) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2021$ / sharesshares	Sep. 30, 2021shares	Sep. 30, 2021USD ($)$ / sharesshares
Class D Preferred Units
Preferred Units
Warrants outstanding (in units) | shares	25,500,000	25,500,000	25,500,000
Class D Preferred Units
Preferred Units
Preferred units, dividend payment terms		The current distribution rate for the Class D Preferred Units is 9.00% per year per unit (equal to $90.00 per every $1,000 in unit value per year), plus an additional 1.5% rate increase due to us exceeding the adjusted total leverage ratio and due to a Class D distribution payment default, as defined within the amended and restated limited partnership agreement
Class D Preferred Units
Preferred Units
Temporary equity, issued and outstanding (in units) | shares	600,000	600,000	600,000
Distributions earned during the quarter but not paid | $ / shares	$ 27.32
Class D Preferred Units | Cumulative distributions
Preferred Units
Distributions earned but not declared | $ / shares			$ 80.64
Cumulative distributions earned but not paid including accumulated interest | $			$ 49,600

Equity - Equity-Based Incentive

Equity - Equity-Based Incentive Compensation - Service Awards (Details) - Service awards - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Equity-Based Incentive Compensation
Distributions on Service Awards during the vesting period			$ 0
Weighted-average grant price			$ 2.15
Expense recorded	$ 1,000,000	$ 1,300,000	$ 2,000,000	$ 2,700,000
Service Award Activity
Unvested restricted units at the beginning of the period (in units)			446,975
Units granted (in units)			3,294,750
Units forfeited (in units)			(261,125)
Unvested restricted units at the end of the period (in units)	3,480,600		3,480,600
Expected Future Expense
2022 (six months)			$ 1,382,000
2023			3,286,000
2024			1,375,000
Total			$ 6,043,000
Scheduled vesting of Service Award units			3,480,600
2022 (six months)
Expected Future Expense
Scheduled vesting of Service Award units			1,176,975
2023
Expected Future Expense
Scheduled vesting of Service Award units			1,535,625
2024
Expected Future Expense
Scheduled vesting of Service Award units			768,000

Equity - Equity-Based Compensat

Equity - Equity-Based Compensation - LTIP (Details)	Sep. 30, 2021shares
Service awards
LTIP
Number of units available for grant	0

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Fair Value of Commodity Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021
Derivative assets (liabilities)
Net commodity derivative asset	$ 40,712	$ 15,704
Prepaid expenses and other current assets
Derivative assets (liabilities)
Net commodity derivative asset	51,600
Commodity contracts
Assets:
Derivative assets	112,938	49,832
Netting of counterparty contracts, assets	(35,337)	(12,648)
Net cash collateral (held) provided	(7,949)	2,660
Commodity derivatives	69,652	39,844
Liabilities:
Derivative liabilities	(71,085)	(42,331)
Netting of counterparty contracts, liabilities	35,337	12,648
Net cash collateral (held) provided	6,808	5,543
Commodity derivatives	(28,940)	(24,140)
Derivative assets (liabilities)
Net commodity derivative asset	40,712	15,704
Commodity contracts | Prepaid expenses and other current assets
Derivative assets (liabilities)
Net commodity derivative asset	68,792	39,844
Commodity contracts | Other noncurrent assets
Derivative assets (liabilities)
Net commodity derivative asset	860	0
Commodity contracts | Accrued Liabilities
Derivative assets (liabilities)
Net commodity derivative asset	(28,940)	(21,562)
Commodity contracts | Other noncurrent liabilities
Derivative assets (liabilities)
Net commodity derivative asset	0	(2,578)
Level 1 | Commodity contracts
Assets:
Derivative assets	61,301	12,312
Liabilities:
Derivative liabilities	(35,321)	(17,857)
Level 2 | Commodity contracts
Assets:
Derivative assets	51,637	37,520
Liabilities:
Derivative liabilities	$ (35,764)	$ (24,474)

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Derivative Contract Positions (Details) bbl in Thousands, $ in Thousands	Sep. 30, 2021USD ($)bbl	Mar. 31, 2021USD ($)bbl
Fair value of financial instruments
Fair Value of Net Assets (Liabilities)	$ 41,853	$ 7,501
Net cash collateral held	(1,141)	8,203
Net commodity derivative asset	40,712	15,704
Fixed-price contract | Crude oil
Fair value of financial instruments
Fair Value of Net Assets (Liabilities)	12,682	(5,414)
Fixed-price contract | Propane
Fair value of financial instruments
Fair Value of Net Assets (Liabilities)	35,880	2,188
Fixed-price contract | Refined products
Fair value of financial instruments
Fair Value of Net Assets (Liabilities)	(6,081)	1,928
Fixed-price contract | Butane
Fair value of financial instruments
Fair Value of Net Assets (Liabilities)	$ (17,445)	$ (3,764)
Fixed-price contract | Short | Crude oil
Fair value of financial instruments
Net Long (Short) Notional Units (in barrels) | bbl	(1,152)	(1,850)
Fixed-price contract | Short | Propane
Fair value of financial instruments
Net Long (Short) Notional Units (in barrels) | bbl		(195)
Fixed-price contract | Short | Refined products
Fair value of financial instruments
Net Long (Short) Notional Units (in barrels) | bbl	(369)	(503)
Fixed-price contract | Short | Butane
Fair value of financial instruments
Net Long (Short) Notional Units (in barrels) | bbl	(697)	(753)
Fixed-price contract | Long | Propane
Fair value of financial instruments
Net Long (Short) Notional Units (in barrels) | bbl	1,284
Other
Fair value of financial instruments
Fair Value of Net Assets (Liabilities)	$ 16,817	$ 12,563

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - (Losses) Gains From Commodity Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Net adjustments to fair value of commodity derivatives	$ 16,000	$ (3,200)	$ (40,680)	$ (30,562)

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Interest Rate Risk (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021
Interest Rate Risk
Face amount	$ 3,470,844	$ 3,376,768
Asset Based Credit Facility
Interest Rate Risk
Interest rate	4.89%
Asset Based Credit Facility
Interest Rate Risk
Face amount	$ 146,000	$ 4,000

Fair Value of Financial Instr_7

Fair Value of Financial Instruments - Fair Value of Fixed-Rate Notes (Details) $ in Thousands	Sep. 30, 2021USD ($)
7.5% Senior Secured Notes due 2026
Fair Value of Fixed-Rate Notes
Fair value of fixed-rate notes	$ 2,088,438
7.5% Senior Notes due 2023
Fair Value of Fixed-Rate Notes
Fair value of fixed-rate notes	503,478
6.125% Senior Notes due 2025
Fair Value of Fixed-Rate Notes
Fair value of fixed-rate notes	336,001
7.5% Senior Notes due 2026
Fair Value of Fixed-Rate Notes
Fair value of fixed-rate notes	$ 295,838

Segments (Details)

Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2021
Segment information
Total Revenues	$ 1,754,137	$ 1,168,158	$ 3,242,792	$ 2,012,573
Depreciation and amortization, including amortization of debt issuance costs	74,443	90,826	162,424	178,506
Operating Income (Loss)	64,818	36,316	(4,516)	25,531
Additions to property, plant and equipment and intangible assets	37,367	24,418	69,247	54,356
Long-lived assets, net	4,573,062		4,573,062		$ 4,866,051
Total assets	5,981,792		5,981,792		5,947,341
Operating segment | Water solutions
Segment information
Total Revenues	136,210	88,678	266,436	176,743
Depreciation and amortization, including amortization of debt issuance costs	50,731	62,282	113,774	120,477
Operating Income (Loss)	32,772	(13,277)	40,355	(29,324)
Additions to property, plant and equipment and intangible assets	33,591	12,260	60,553	32,962
Long-lived assets, net	3,043,245		3,043,245		3,104,450
Total assets	3,185,155		3,185,155		3,204,850
Operating segment | Water solutions | Disposal service fees
Segment information
Total Revenues	101,892	76,004	200,189	157,382
Operating segment | Water solutions | Sale of recovered crude oil
Segment information
Total Revenues	17,182	8,386	30,983	9,754
Operating segment | Water solutions | Sale of water
Segment information
Total Revenues	11,570	1,153	24,852	3,881
Operating segment | Water solutions | Other revenues
Segment information
Total Revenues	5,566	3,135	10,412	5,726
Operating segment | Crude oil logistics
Segment information
Total Revenues	554,830	466,841	1,108,454	742,880
Depreciation and amortization, including amortization of debt issuance costs	12,454	17,232	24,863	34,027
Operating Income (Loss)	28,231	48,239	16,650	71,559
Additions to property, plant and equipment and intangible assets	1,008	3,098	1,471	8,770
Long-lived assets, net	1,073,603		1,073,603		1,090,578
Total assets	1,726,429		1,726,429		1,665,005
Operating segment | Crude oil logistics | Crude oil sales
Segment information
Total Revenues	536,067	418,174	1,071,496	648,902
Operating segment | Crude oil logistics | Crude oil transportation and other
Segment information
Total Revenues	18,813	47,567	37,262	90,208
Operating segment | Crude oil logistics | Non-Topic 606 revenues
Segment information
Non-Topic 606 revenues	2,120	3,105	4,365	6,274
Operating segment | Liquids logistics
Segment information
Total Revenues	1,063,097	612,324	1,867,902	1,092,322
Depreciation and amortization, including amortization of debt issuance costs	4,758	7,102	11,803	15,335
Operating Income (Loss)	11,461	14,338	(41,948)	18,900
Additions to property, plant and equipment and intangible assets	2,516	3,188	6,060	4,720
Long-lived assets, net	403,552		403,552		626,221
Total assets	1,002,668		1,002,668		1,003,370
Operating segment | Liquids logistics | Other revenues
Segment information
Total Revenues	3,065	6,683	8,488	13,025
Operating segment | Liquids logistics | Non-Topic 606 revenues
Segment information
Non-Topic 606 revenues	89,581	797	103,888	39,514
Operating segment | Liquids logistics | Refined products sales
Segment information
Total Revenues	444,268	288,781	837,377	499,328
Operating segment | Liquids logistics | Propane sales
Segment information
Total Revenues	219,297	136,538	379,700	258,066
Operating segment | Liquids logistics | Butane sales
Segment information
Total Revenues	167,337	89,920	285,877	145,117
Operating segment | Liquids logistics | Other product sales
Segment information
Total Revenues	139,566	90,418	253,896	138,753
Operating segment | Corporate and other
Segment information
Total Revenues	0	315	0	628
Operating segment | Corporate and other | Non-Topic 606 revenues
Segment information
Non-Topic 606 revenues	0	315	0	628
Elimination of intersegment sales | Crude oil logistics
Segment information
Total Revenues	(2,170)	(2,005)	(4,669)	(2,504)
Elimination of intersegment sales | Liquids logistics
Segment information
Total Revenues	(17)	(813)	(1,324)	(1,481)
Corporate and other
Segment information
Depreciation and amortization, including amortization of debt issuance costs	6,500	4,210	11,984	8,667
Operating Income (Loss)	(7,646)	(12,984)	(19,573)	(35,604)
Additions to property, plant and equipment and intangible assets	252	$ 5,872	1,163	$ 7,904
Long-lived assets, net	52,662		52,662		44,802
Total assets	67,540		67,540		74,116
Non-US | Liquids logistics
Segment information
Long-lived assets, net	19,900		19,900		20,900
Total assets	$ 63,000		$ 63,000		$ 37,900

Transactions with Affiliates (D

Transactions with Affiliates (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2021
Transactions with Affiliates
Accounts receivable-affiliates	$ 8,979		$ 8,979		$ 9,435
Accounts payable-affiliates	97		97		119
Entities affiliated with management
Transactions with Affiliates
Sales to related party	0	$ 1,243	0	$ 2,123
Purchases from related party	18	224	88	291
Accounts receivable-affiliates	1		1		728
Accounts payable-affiliates	1		1		12
NGL Energy Holdings LLC
Transactions with Affiliates
Accounts receivable-affiliates	8,775		8,775		8,245
Equity method investee
Transactions with Affiliates
Purchases from related party	350	292	541	745
Accounts receivable-affiliates	203		203		462
Accounts payable-affiliates	$ 96		$ 96		$ 107
WPX Energy
Transactions with Affiliates
Sales to related party		12,485		22,241
Purchases from related party		$ 82,287		$ 116,060

Transactions with Affiliates -

Transactions with Affiliates - Other Related Party Transactions (Details) $ in Thousands	Sep. 30, 2021USD ($)
Transactions with Affiliates
Outstanding loan balance	$ 2,600
Guarantor obligation	$ 0
Operating segment | Aircraft Company | Corporate and other
Transactions with Affiliates
Ownership interest	50.00%

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Revenue Agreements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net adjustments to fair value of commodity derivatives	$ 16,000	$ (3,200)	$ (40,680)	$ (30,562)
Liquids logistics
Net adjustments to fair value of commodity derivatives			$ (10,000)

Revenue from Contracts with C_5

Revenue from Contracts with Customers - Performance Obligations (Details) $ in Thousands	Sep. 30, 2021USD ($)
Revenue from Contracts with Customers - Performance Obligations [Abstract]
Revenue expected to be recognized as of September 30, 2021	$ 338,027
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Revenue from Contracts with Customers - Performance Obligations [Abstract]
Revenue expected to be recognized as of September 30, 2021	$ 63,962
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue from Contracts with Customers - Performance Obligations [Abstract]
Revenue expected to be recognized as of September 30, 2021	$ 103,596
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01
Revenue from Contracts with Customers - Performance Obligations [Abstract]
Revenue expected to be recognized as of September 30, 2021	$ 85,147
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Revenue from Contracts with Customers - Performance Obligations [Abstract]
Revenue expected to be recognized as of September 30, 2021	$ 62,441
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-04-01
Revenue from Contracts with Customers - Performance Obligations [Abstract]
Revenue expected to be recognized as of September 30, 2021	$ 17,215
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01
Revenue from Contracts with Customers - Performance Obligations [Abstract]
Revenue expected to be recognized as of September 30, 2021	$ 3,702
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-04-01
Revenue from Contracts with Customers - Performance Obligations [Abstract]
Revenue expected to be recognized as of September 30, 2021	$ 1,964
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	2 years 9 months

Revenue from Contracts with C_6

Revenue from Contracts with Customers - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2021	Mar. 31, 2021
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Accounts receivable from contracts with customers	$ 463,010	$ 436,682
Contract liabilities balance	18,389	$ 10,896
Payment received and deferred	30,591
Payment recognized in revenue	(14,864)
Disposition of Sawtooth (see Note 15)	$ (8,234)

Leases - Lease Expense (Details

Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Lease, Cost [Abstract]
Operating lease expense	$ 15,020	$ 17,953	$ 30,294	$ 36,230
Variable lease expense	5,023	4,334	10,253	9,213
Short-term lease expense	89	405	159	801
Total	$ 20,132	$ 22,692	$ 40,706	$ 46,244

Leases - Lessee Maturities of O

Leases - Lessee Maturities of Operating Lease Obligations (Details) $ in Thousands	Sep. 30, 2021USD ($)
Leases [Abstract]
2022 (six months)	$ 26,546
2023	44,809
2024	28,814
2025	16,701
2026	8,419
2027	4,596
Thereafter	38,687
Total lease payments	168,572
Less imputed interest	(35,728)
Total operating lease obligations	$ 132,844

Leases - Lessee Supplemental Ca

Leases - Lessee Supplemental Cash Flow and Non-Cash Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Cash paid for amounts included in the measurement of operating lease obligations	$ 30,267	$ 36,135
Operating lease right-of-use assets obtained in exchange for operating lease obligations	$ 10,386	$ 19,257

Leases - Lessor Future Minimum

Leases - Lessor Future Minimum Lease Payments Receivable (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
2022 (six months)	$ 5,791		$ 5,791
2023	9,632		9,632
2024	4,820		4,820
2025	691		691
2026	415		415
2027	415		415
Thereafter	422		422
Total	22,186		22,186
Operating lease revenues	3,200	$ 4,200	6,500	$ 8,500
Sublease revenue	$ 300	$ 700	$ 700	$ 1,300

Allowance for Current Expecte_4

Allowance for Current Expected Credit Loss (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2021
Allowance for Expected Credit Loss
Change in provision for expected credit losses	$ 96	$ (259)
Trade Accounts Receivable
Allowance for Expected Credit Loss
Accounts receivable-trade, allowance for expected credit loss	2,257		$ 2,192
Change in provision for expected credit losses	96
Write-offs charged against the provision	(27)
Disposition of Sawtooth (see Note 15)	(4)
Notes Receivable and Other
Allowance for Expected Credit Loss
Change in provision for expected credit losses	0
Write-offs charged against the provision	0
Notes receivable and other, allowance for expected credit loss	$ 458		$ 458

Other Matters - Sale of Sawtoot

Other Matters - Sale of Sawtooth (Details) - USD ($) $ in Thousands	Jun. 18, 2021	Sep. 30, 2021	Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Total consideration		$ 63,489	$ 0
Sawtooth [Domain]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Total consideration	$ 70,000
Estimated selling expenses	2,100
Loss on disposal	$ 60,100
Sawtooth [Domain] | Sawtooth [Domain]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Ownership percentage in Sawtooth	71.50%

Discontinued Operations (Detail

Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Loss on disposal or impairment of assets, net (1)		$ 116		$ 1,181
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenues		0		16,198
Cost of sales		118		16,429
Operating expenses		72		280
Loss on disposal or impairment of assets, net (1)		116		1,181
Operating loss from discontinued operations		(306)		(1,692)
Interest expense		100		0
Loss from discontinued operations before taxes		(206)		(1,692)
Income tax benefit		53		53
Loss From Discontinued Operations, net of Tax	$ 0	(153)	$ 0	(1,639)
TPSL
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Loss on disposal or impairment of assets, net (1)		100		200
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Loss on disposal or impairment of assets, net (1)		$ 100		200
Gas Blending
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Loss on disposal or impairment of assets, net (1)				1,000
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Loss on disposal or impairment of assets, net (1)				$ 1,000