Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
Materials and supplies inventory		$ 51,900	$ 56,200
Total assets	[1]	11,445,873	11,273,079
Accounts receivable, net		601,647	436,513
Total liabilities	[2]	8,175,066	8,177,319
Related Parties [Member]
Total assets		1,512,669	1,405,376
Accounts receivable, net		274,222	180,205
Total liabilities		275,729	270,521
Natural-Gas Liquids [Member]
NGLs line-fill inventory		$ 14,600	$ 9,800

[1] Total assets includes related-party amounts of $1.5 billion and $1.4 billion as of March 31, 2022, and December 31, 2021, respectively, which includes related-party Accounts receivable, net of $274.2 million and $180.2 million as of March 31, 2022, and December 31, 2021, respectively. See Note 5.

[2] Total liabilities includes related-party amounts of $275.7 million and $270.5 million as of March 31, 2022, and December 31, 2021, respectively. See Note 5.