Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues	$ 782,806	$ 628,935
Costs and expenses:
Operating	149,508	146,025
Cost of product sales	249,236	169,094
Depreciation, amortization and impairment	63,534	61,871
General and administrative	36,908	45,995
Total costs and expenses	499,186	422,985
Other operating income (expense)	(511)	6,941
Earnings of non-controlled entities	43,660	31,255
Operating profit	326,769	244,146
Interest expense	55,900	60,166
Interest capitalized	(4,951)	(3,454)
Interest income	(420)	(1,660)
Gain on disposition of assets	(12,887)	(21,788)
Other (income) expense	807	2,050
Income before provision for income taxes	288,320	208,832
Provision for income taxes	756	1,169
Net income	$ 287,564	$ 207,663
Basic net income per common unit (in dollars per share)	$ 1.26	$ 0.91
Diluted net income per common unit (in dollars per share)	$ 1.26	$ 0.91
Weighted average number of common units outstanding used for basic net income per unit calculation (in shares)	227,571	228,558
Weighted average number of common units outstanding used for diluted net income per unit calculation (in shares)	227,571	228,558
Service [Member]
Revenues	$ 458,395	$ 460,792
Product [Member]
Revenues	319,120	162,995
Product and Service, Other [Member]
Revenues	$ 5,291	$ 5,148