Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Common units issued		218,937,797	218,933,141
Common units outstanding		218,937,797	218,933,141
Accounts receivable, net	[1]	$ 216,892	$ 160,239
Other current assets	[2]	26,790	15,383
Accrued liabilities	[3]	129,196	47,992
Other liabilities	[4]	140,067	3,491
Affiliates [Member]
Accounts receivable, net		72,600	36,100
Other current assets		3,700	0
Accrued liabilities		2,400	200
Other liabilities		$ 55,700	$ 700

[1] Accounts receivable, net includes amounts receivable from affiliates (as defined in Note 1) of $72.6 million and $36.1 million as of December 31, 2018 and 2017, respectively.

[2] Other current assets includes affiliate amounts of $3.7 million and zero as of December 31, 2018 and 2017, respectively.

[3] Accrued liabilities includes affiliate amounts of $2.4 million and $0.2 million as of December 31, 2018 and 2017, respectively.

[4] Other liabilities includes affiliate amounts of $55.7 million and $0.7 million as of December 31, 2018 and 2017, respectively.