Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash Flows From Operating Activities
Net Income		$ 245,467	$ 216,719	$ 160,767
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities
Depreciation and Amortization		96,981	79,568	22,990
Asset Impairment		(488)	3,470	0
Deferred Income Taxes		3,848	7,780	27,952
Loss (Income) from Equity Method Investees		22,435	(11,880)	(1,779)
Distributions from Equity Method Investees		10,135	9,219	0
Unit-Based Compensation		1,052	1,392	790
Other Adjustments for Noncash Items Included in Income		1,548	739	384
Changes in Operating Assets and Liabilities, Net of Assets Acquired and Liabilities Assumed
Increase in Accounts Receivable		(24,126)	(13,863)	(17,811)
Increase (Decrease) in Accounts Payable		28,755	(22,101)	1,580
Other Operating Assets and Liabilities, Net		(464)	2,644	1,489
Net Cash Provided by Operating Activities		385,143	273,687	196,362
Cash Flows From Investing Activities
Additions to Property, Plant and Equipment		(262,342)	(619,517)	(314,214)
Black Diamond Acquisition, Net of Cash Acquired		0	(649,868)	0
Additions to Investments		(611,325)	(426)	(68,504)
Distributions from Cost Method Investee and Other		1,074	1,323	973
Net Cash Used in Investing Activities		(872,593)	(1,268,488)	(381,745)
Cash Flows From Financing Activities
Distributions to Noncontrolling Interests and Parent		(57,071)	(38,056)	(46,066)
Contributions from Noncontrolling Interests		55,481	605,864	140,471
Repayment of Revolving Credit Facility		(755,000)	(802,000)	(240,000)
Proceeds from Preferred Equity, Net of Issuance Costs		97,198	0	0
Proceeds from Equity Offerings, Net of Issuance Costs		242,770	0	312,579
Distribution to Noble for Common Control Transactions		(670,000)	0	(245,000)
Distributions to Unitholders		(115,935)	(86,841)	(59,917)
Debt Issuance Costs and Other		(2,979)	(3,049)	(1,532)
Net Cash Provided by Financing Activities		484,464	952,918	185,535
(Decrease) Increase in Cash, Cash Equivalents, and Restricted Cash		(2,986)	(41,883)	152
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	[1]	15,712	57,595	57,443
Cash, Cash Equivalents, and Restricted Cash at End of Period	[1]	12,726	15,712	57,595
Revolving Credit Facility
Cash Flows From Financing Activities
Borrowings Under Revolving Credit Facility		1,290,000	777,000	325,000
Term Loan Credit Facility
Cash Flows From Financing Activities
Proceeds from Term Loan Credit Facilities		$ 400,000	$ 500,000	$ 0

[1] See Note 2. Summary of Significant Accounting Policies and Basis of Presentation for our reconciliation of total cash.