Consolidated Balance Sheets - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents		$ 97,434	$ 201,999
Accounts receivable, net		716,343	436,513
Other current assets		49,666	46,252
Total current assets		863,443	684,764
Property, plant, and equipment
Cost		13,058,689	12,846,078
Less accumulated depreciation		4,581,122	4,333,171
Net property, plant, and equipment		8,477,567	8,512,907
Goodwill		4,783	4,783
Other intangible assets		728,908	744,742
Equity investments		1,148,487	1,167,187
Other assets	[1]	165,671	158,696
Total assets	[2]	11,388,859	11,273,079
Current liabilities
Accounts and imbalance payables		492,979	326,061
Short-term debt		2,613	505,932
Accrued ad valorem taxes		41,268	44,955
Accrued liabilities		217,817	263,249
Total current liabilities		754,677	1,140,197
Long-term liabilities
Long-term debt		6,656,123	6,400,616
Deferred income taxes		14,345	12,425
Asset retirement obligations		303,548	298,275
Other liabilities		355,163	325,806
Total long-term liabilities		7,329,179	7,037,122
Total liabilities	[3]	8,083,856	8,177,319
Equity and partners' capital
Common units (400,248,341 and 402,993,919 units issued and outstanding at June 30, 2022, and December 31, 2021, respectively)		3,164,328	2,966,955
General partner units (9,060,641 units issued and outstanding at June 30, 2022, and December 31, 2021)		(2,825)	(8,882)
Total partners' capital		3,161,503	2,958,073
Noncontrolling interests		143,500	137,687
Total equity and partners' capital		3,305,003	3,095,760
Total liabilities, equity, and partners' capital		$ 11,388,859	$ 11,273,079
Common units issued		400,248,341	402,993,919
Common units outstanding		400,248,341	402,993,919
General partner units issued		9,060,641	9,060,641
General partner units outstanding		9,060,641	9,060,641

[1] Other assets includes $12.2 million and $9.8 million of NGLs line-fill inventory as of June 30, 2022, and December 31, 2021, respectively. Other assets also includes $55.3 million and $56.2 million of materials and supplies inventory as of June 30, 2022, and December 31, 2021, respectively.

[2] Total assets includes related-party amounts of $1.5 billion and $1.4 billion as of June 30, 2022, and December 31, 2021, respectively, which includes related-party Accounts receivable, net of $322.7 million and $180.2 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6.

[3] Total liabilities includes related-party amounts of $288.3 million and $270.5 million as of June 30, 2022, and December 31, 2021, respectively. See Note 6.