Transactions with Affiliates (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2020
Transactions with Affiliates
Accounts receivable-affiliates	$ 17,194		$ 17,194		$ 12,934
Accounts payable-affiliates	42,604		42,604		17,717
WPX Energy
Transactions with Affiliates
Sales to related party	16,888	$ 13,888	39,129	$ 36,716
Purchases from related party	100,427	81,578	216,487	247,745
Accounts receivable-affiliates	5,349		5,349		3,563
Accounts payable-affiliates	41,712		41,712		17,039
Entities affiliated with management
Transactions with Affiliates
Sales to related party	5,369	3,642	7,492	5,362
Purchases from related party	393	953	684	3,068
Accounts receivable-affiliates	1,260		1,260		151
Accounts payable-affiliates	205		205		149
Equity method investee
Transactions with Affiliates
Purchases from related party	689	$ 188	1,434	$ 317
Accounts receivable-affiliates	2,359		2,359		1,439
Accounts payable-affiliates	687		687		529
NGL Energy Holdings LLC
Transactions with Affiliates
Accounts receivable-affiliates	$ 8,226		$ 8,226		$ 7,781

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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