Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 66,678	$ 90,761
Adjustments to reconcile net income to net cash provided by operating activities -
Depreciation, depletion and amortization	176,453	156,800
Non-cash provision for leased items no longer in use	12,589	0
Gain on sale of assets	(26,684)	0
Amortization of debt issuance costs and discount	8,154	7,563
Amortization of unearned income and initial direct costs on direct financing leases	(10,374)	(10,856)
Payments received under direct financing leases	15,501	15,501
Equity in earnings of investments in equity investees	(34,805)	(35,362)
Cash distributions of earnings of equity investees	45,854	49,528
Non-cash effect of equity-based compensation plans	(5,524)	6,102
Deferred and other tax liabilities	508	2,058
Unrealized loss on derivative transactions	3,040	742
Other, net	(7,338)	8,967
Net changes in components of operating assets and liabilities (Note 13)	(26,262)	(63,407)
Net cash provided by operating activities	217,790	228,397
CASH FLOWS FROM INVESTING ACTIVITIES:
Payments to acquire fixed and intangible assets	(182,653)	(363,218)
Cash distributions received from equity investees - return of investment	14,517	16,652
Acquisitions	(1,325,759)	(25,394)
Contributions in aid of construction costs	124	12,208
Proceeds from asset sales	39,204	3,303
Other, net	0	185
Net cash used in investing activities	(1,454,567)	(356,264)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on senior secured credit facility	1,247,700	883,600
Repayments on senior secured credit facility	(1,153,400)	(831,600)
Proceeds from issuance of unsecured debt	550,000	0
Proceeds from issuance of Series A convertible preferred units, net	729,958	0
Debt issuance costs	(17,808)	(1,578)
Issuance of common units for cash, net	140,513	298,051
Contributions from noncontrolling interest	1,850	0
Distributions to common unitholders	(260,586)	(227,454)
Other, net	1,215	(600)
Net cash provided by financing activities	1,239,442	120,419
Net increase in cash and cash equivalents	2,665	(7,448)
Cash and cash equivalents at beginning of period	7,029	10,895
Cash and cash equivalents at end of period	$ 9,694	$ 3,447