Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues	$ 701,699	$ 644,091	$ 1,330,634	$ 1,322,870
Costs and expenses:
Operating	168,929	159,845	314,954	303,141
Cost of product sales	152,876	153,679	321,970	353,271
Depreciation, amortization and impairment	62,530	53,619	124,401	105,498
General and administrative	52,383	53,290	98,378	99,846
Total costs and expenses	436,718	420,433	859,703	861,756
Other operating income (expense)	(5,024)	0	1,917	0
Earnings of non-controlled entities	40,785	42,510	72,040	77,048
Operating profit	300,742	266,168	544,888	538,162
Interest expense	51,406	56,750	111,572	113,402
Interest capitalized	(5,134)	(5,608)	(8,588)	(10,255)
Interest income	(338)	(380)	(1,998)	(959)
Gain on disposition of assets	(4,646)	0	(26,434)	0
Other (income) expense	4,570	(119)	6,620	8,605
Income before provision for income taxes	254,884	215,525	463,716	427,369
Provision for income taxes	1,181	1,116	2,350	2,050
Net income	$ 253,703	$ 214,409	$ 461,366	$ 425,319
Basic net income per limited partner unit (in dollars per share)	$ 1.11	$ 0.94	$ 2.02	$ 1.86
Diluted net income per limited partner unit (in dollars per share)	$ 1.11	$ 0.94	$ 2.02	$ 1.86
Weighted average number of limited partner units outstanding used for basic net income per unit calculation (in dollars per share)	228,647	228,387	228,603	228,354
Weighted average number of limited partner units outstanding used for diluted net income per unit calculation (in dollars per share)	228,688	228,425	228,623	228,393
Service [Member]
Revenues	$ 506,405	$ 472,248	$ 967,197	$ 904,185
Product [Member]
Revenues	189,989	166,797	352,984	408,389
Product and Service, Other [Member]
Revenues	$ 5,305	$ 5,046	$ 10,453	$ 10,296