Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating Activities:
Net income	$ 1,019,853	$ 631,636
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	161,726	146,103
Gain on sale and retirement of assets	(347,541)	(10,924)
Earnings of non-controlled entities	(130,843)	(78,173)
Distributions from operations of non-controlled entities	147,950	97,691
Equity-based incentive compensation expense	24,612	14,183
Settlement cost, amortization of prior service credit and actuarial loss	8,487	6,658
Changes in operating assets and liabilities:
Trade accounts receivable and other accounts receivable	(8,303)	(14,413)
Inventory	2,979	(34,384)
Energy commodity derivatives contracts, net of derivatives deposits	(4,505)	1,135
Accounts payable	27,498	15,576
Accrued payroll and benefits	(2,976)	(5,608)
Accrued interest payable	(21,348)	(23,386)
Accrued taxes other than income	964	(322)
Accrued product liabilities	(15,964)	67,972
Deferred revenue	5,353	14,806
Current and noncurrent environmental liabilities	4,327	(3,352)
Other current and noncurrent assets and liabilities	(8,488)	(11,497)
Net cash provided by operating activities	863,781	813,701
Investing Activities:
Additions to property, plant and equipment, net	(374,320)	(418,239)
Proceeds from sale and disposition of assets	579,448	44,303
Investments in non-controlled entities	(147,048)	(114,078)
Distributions from returns of investments in non-controlled entities	1,786	52,738
Deposits received from undivided joint interest third party	41,571	0
Net cash provided (used) by investing activities	101,437	(435,276)
Financing Activities:
Distributions paid	(642,370)	(596,854)
Net commercial paper borrowings	0	218,984
Payments on notes	(250,000)	0
Debt placement costs	(326)	0
Net receipt on financial derivatives	20,925	0
Payments associated with settlement of equity-based incentive compensation	(9,285)	(13,875)
Net cash used by financing activities	(881,056)	(391,745)
Change in cash, cash equivalents and restricted cash	84,162	(13,320)
Cash, cash equivalents and restricted cash at beginning of period	176,068	14,701
Cash, cash equivalents and restricted cash at end of period	260,230	1,381
Supplemental non-cash investing and financing activities:
Contribution of property, plant and equipment to a non-controlled entity	0	93,051
Issuance of limited partner units in settlement of equity-based incentive plan awards	120	1,669
Additions to property, plant and equipment	(375,599)	(443,439)
Changes in accounts payable and other current liabilities related to capital expenditures	1,279	25,200
Additions to property, plant and equipment, net	$ (374,320)	$ (418,239)