Consolidated Statement of Partners' Capital Statement - USD ($) $ in Thousands	Total	Limited Partners	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2017	$ 2,129,653	$ 2,267,231	$ (137,578)
Comprehensive income:
Net income	425,319	425,319
Total other comprehensive income (loss)	10,025		10,025
Comprehensive income	435,344	425,319	10,025
Distributions	(423,873)	(423,873)
Equity-based incentive compensation expense	16,679	16,679
Issuance of limited partner units in settlement of equity-based incentive plan awards	120	120
Payments associated with settlement of equity-based incentive compensation	(9,285)	(9,285)
Other	(321)	(321)
Ending balance at Jun. 30, 2018	2,154,292	2,281,845	(127,553)
Beginning balance at Mar. 31, 2018	2,139,187	2,271,486	(132,299)
Comprehensive income:
Net income	214,409	214,409
Total other comprehensive income (loss)	4,746		4,746
Comprehensive income	219,155	214,409	4,746
Distributions	(213,933)	(213,933)
Equity-based incentive compensation expense	10,047	10,047
Other	(164)	(164)
Ending balance at Jun. 30, 2018	2,154,292	2,281,845	(127,553)
Beginning balance at Dec. 31, 2018	2,643,434	2,763,925	(120,491)
Comprehensive income:
Net income	461,366	461,366
Total other comprehensive income (loss)	(15,777)		(15,777)
Comprehensive income	445,589	461,366	(15,777)
Distributions	(457,377)	(457,377)
Equity-based incentive compensation expense	15,804	15,804
Issuance of limited partner units in settlement of equity-based incentive plan awards	480	480
Payments associated with settlement of equity-based incentive compensation	(9,764)	(9,764)
Other	(387)	(387)
Ending balance at Jun. 30, 2019	2,637,779	2,774,047	(136,268)
Beginning balance at Mar. 31, 2019	2,616,255	2,739,192	(122,937)
Comprehensive income:
Net income	253,703	253,703
Total other comprehensive income (loss)	(13,331)		(13,331)
Comprehensive income	240,372	253,703	(13,331)
Distributions	(229,545)	(229,545)
Equity-based incentive compensation expense	10,890	10,890
Other	(193)	(193)
Ending balance at Jun. 30, 2019	$ 2,637,779	$ 2,774,047	$ (136,268)