Estimates, Significant Accounting Policies and Balance Sheet Detail (Tables)

12 Months Ended

Dec. 31, 2018

Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]

The cumulative effect of the changes made to the Partnership’s consolidated balance sheet for the adoption of ASU 2014-09 was as follows:



	Balance at December 31, 2017		Adjustments due to ASC 606			Balance at January 1, 2018
Assets:
Other current assets	$	295	$	8		$	303
Property, plant and equipment, net	61,088		—			61,088
Intangible assets, net	6,116		(100		)	6,016
Other non-current assets, net	886		39			925

Liabilities and Equity:
Other non-current liabilities	$	1,217	$	1		$	1,218
Noncontrolling interest	31,176		(54		)	31,122

The adoption of the new revenue standard resulted in reclassifications between revenue, cost of sales and operating expenses. Additionally, changes in timing of revenue recognition have required the creation of contract asset or contract liability balances, as well as certain balance sheet reclassifications. In accordance with the requirements of ASC Topic 606, the disclosure below shows the impact of adopting the new standard on the consolidated statement of operations and the consolidated balance sheet.



	Year Ended December 31, 2018
	As Reported		Balances Without Adoption of ASC 606		Effect of Change: Higher/(Lower)
Revenues:
Natural gas sales	$	4,452	$	4,452	$	—
NGL sales	9,109		9,071		38
Crude sales	14,415		14,403		12
Gathering, transportation and other fees	6,797		7,526		(729		)
Refined product sales	18,345		18,393		(48		)
Other	969		968		1

Costs and expenses:
Cost of products sold	$	41,658	$	42,389	$	(731	)
Operating expenses	3,089		3,045		44
Depreciation and amortization	2,859		2,888		(29		)



	Year Ended December 31, 2018
	As Reported		Balances Without Adoption of ASC 606		Effect of Change: Higher/(Lower)
Assets:
Other current assets	$	350	$	338	$	12
Property, plant and equipment, net	66,963		66,963		—
Other non-current assets, net	1,006		947		59
Intangible assets, net	6,000		6,134		(134		)

Liabilities and Equity:
Other non-current liabilities	$	1,184	$	1,183	$	1
Noncontrolling interest	10,291		10,355		(64		)

Schedule Of Net Changes In Operating Assets And Liabilities Included Cash Flows From Operating Activities

The net change in operating assets and liabilities (net of effects of acquisitions, dispositions and deconsolidation) included in cash flows from operating activities was comprised as follows:



	Years Ended December 31,
	2018			2017			2016
Accounts receivable	$	541		$	(948	)	$	(1,126	)
Accounts receivable from related companies	162			24			42
Inventories	282			58			(480		)
Other current assets	7			38			165
Other non-current assets, net	(92		)	84			(148		)
Accounts payable	(766		)	712			1,170
Accounts payable to related companies	(202		)	(178		)	(64		)
Accrued and other current liabilities	382			(97		)	89
Other non-current liabilities	28			106			106
Derivative assets and liabilities, net	(53		)	9			67
Net change in operating assets and liabilities, net of effects of acquisitions	$	289		$	(192	)	$	(179	)

Schedule Of Non-Cash Investing And Financing Activities

Non-cash investing and financing activities and supplemental cash flow information were as follows:



	Years Ended December 31,
	2018			2017			2016
NON-CASH INVESTING ACTIVITIES:
Accrued capital expenditures	$	1,030		$	1,060		$	848
Net gains (losses) from subsidiary common unit transactions	(126		)	(56		)	16
NON-CASH FINANCING ACTIVITIES:
Issuance of Common Units in connection with the PennTex Acquisition	$	—		$	—		$	307
Contribution of assets from noncontrolling interest	—			988			—
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest, net of interest capitalized	$	1,870		$	1,914		$	1,922
Cash paid for (refund of) income taxes	508			50			(229		)

Schedule of Inventory

Inventories consisted of the following:



	December 31,
	2018		2017
Natural gas, NGLs and refined products ⁽¹⁾	$	833	$	1,120
Crude oil	506		551
Spare parts and other	338		351
Total inventories	$	1,677	$	2,022

Other Current Assets

Other current assets consisted of the following:



	December 31,
	2018		2017
Deposits paid to vendors	$	141	$	64
Prepaid expenses and other	209		231
Total other current assets	$	350	$	295

Property, Plant and Equipment

Components and useful lives of property, plant and equipment were as follows:



	December 31,
	2018			2017
Land and improvements	$	2,146		$	2,222
Buildings and improvements (1 to 45 years)	2,664			2,786
Pipelines and equipment (5 to 83 years)	57,584			44,673
Natural gas and NGL storage facilities (5 to 46 years)	1,898			1,681
Bulk storage, equipment and facilities (2 to 83 years)	3,395			3,036
Tanks and other equipment (5 to 40 years)	884			847
Vehicles (1 to 25 years)	123			126
Right of way (20 to 83 years)	3,555			3,432
Natural resources	434			434
Other (1 to 40 years)	1,026			1,029
Construction work-in-process	6,067			10,911
	79,776			71,177
Less – Accumulated depreciation and depletion	(12,813		)	(10,089		)
Property, plant and equipment, net	$	66,963		$	61,088

Schedule Of Property, Plant And Equipment Depreciation And Capitalized Interest Expense

We recognized the following amounts for the periods presented:



	Years Ended December 31,
	2018		2017		2016
Depreciation, depletion and amortization expense	$	2,538	$	2,204	$	1,952
Capitalized interest	294		286		201

Schedule of Other Non-Current Assets, net

Other non-current assets, net are stated at cost less accumulated amortization. Other non-current assets, net consisted of the following:



	December 31,
	2018		2017
Regulatory assets	43		85
Deferred charges	241		210
Restricted funds	178		192
Other	544		399
Total other non-current assets, net	$	1,006	$	886

Components And Useful Lives Of Intangibles And Other Assets

Components and useful lives of intangible assets were as follows:



	December 31, 2018					December 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortizable intangible assets:
Customer relationships, contracts and agreements (3 to 46 years)	$	7,106	$	(1,493	)	$	6,979	$	(1,277	)
Patents (10 years)	48		(30		)	48		(26		)
Trade names (20 years)	66		(28		)	66		(25		)
Other (5 to 20 years)	33		(9		)	28		(14		)
Total amortizable intangible assets	7,253		(1,560		)	7,121		(1,342		)
Non-amortizable intangible assets:
Trademarks	295		—			295		—
Other	12		—			42		—
Total non-amortizable intangible assets	307		—			337		—
Total intangible assets	$	7,560	$	(1,560	)	$	7,458	$	(1,342	)

Aggregate Amortization Expense Of Intangibles And Other Assets

Aggregate amortization expense of intangibles assets was as follows:



	Years Ended December 31,
	2018		2017		2016
Reported in depreciation, depletion and amortization expense	$	321	$	344	$	264

Estimated Aggregate Amortization Expense

Estimated aggregate amortization expense of intangible assets for the next five years was as follows:



Years Ending December 31:
2019	$	346
2020	345
2021	342
2022	325
2023	319

Schedule of Goodwill

Changes in the carrying amount of goodwill were as follows:



	Intrastate Transportation and Storage		Interstate Transportation and Storage			Midstream			NGL and Refined Products Transportation and Services			Crude Oil Transportation and Services		Investment in Sunoco LP			Investment in USAC		All Other			Total
Balance, December 31, 2016	$	10	$	458		$	863		$	772		$	1,163	$	1,550		$	—	$	854		$	5,670
Acquired	—		—			8			—			4		—			—		—			12
Impaired	—		(262		)	—			(79		)	—		(102		)	—		(452		)	(895		)
Other	—		—			(1		)	—			—		(18		)	—		—			(19		)
Balance, December 31, 2017	10		196			870			693			1,167		1,430			—		402			4,768
Acquired	—		—			—			—			—		129			366		—			495
CDM Contribution	—		—			—			—			—		—			253		(253		)	—
Impaired	—		—			(378		)	—			—		—			—		—			(378		)
Other	—		—			—			—			—		—			—		—			—
Balance, December 31, 2018	$	10	$	196		$	492		$	693		$	1,167	$	1,559		$	619	$	149		$	4,885

Accrued and Other Current Liabilities

Accrued and other current liabilities consisted of the following:



	December 31,
	2018		2017
Interest payable	$	571	$	552
Customer advances and deposits	128		59
Accrued capital expenditures	1,030		1,006
Accrued wages and benefits	283		280
Taxes payable other than income taxes	256		288
Exchanges payable	112		154
Other	538		243
Total accrued and other current liabilities	$	2,918	$	2,582

Fair Value Of Financial Assets And Liabilities Measured On Recurring Basis

The following tables summarize the fair value of our financial assets and liabilities measured and recorded at fair value on a recurring basis as of December 31, 2018 and 2017 based on inputs used to derive their fair values:



	Fair Value Total			Fair Value Measurements at December 31, 2018
				Level 1			Level 2
Assets:
Commodity derivatives:
Natural Gas:
Basis Swaps IFERC/NYMEX	$	42		$	42		$	—
Swing Swaps IFERC	52			8			44
Fixed Swaps/Futures	97			97			—
Forward Physical Contracts	20			—			20
Power:
Forwards	48			—			48
Futures	1			1			—
Options – Calls	1			1			—
NGLs – Forwards/Swaps	291			291			—
Refined Products – Futures	7			7			—
Crude – Forwards/Swaps	1			1			—
Total commodity derivatives	560			448			112
Other non-current assets	26			17			9
Total assets	$	586		$	465		$	121
Liabilities:
Interest rate derivatives	$	(163	)	$	—		$	(163	)
Commodity derivatives:
Natural Gas:
Basis Swaps IFERC/NYMEX	(91		)	(91		)	—
Swing Swaps IFERC	(40		)	—			(40		)
Fixed Swaps/Futures	(88		)	(88		)	—
Forward Physical Contracts	(21		)	—			(21		)
Power:
Forwards	(42		)	—			(42		)
Futures	(1		)	(1		)	—
NGLs – Forwards/Swaps	(224		)	(224		)	—
Refined Products – Futures	(15		)	(15		)	—
Crude – Forwards/Swaps	(61		)	(61		)	—
Total commodity derivatives	(583		)	(480		)	(103		)
Total liabilities	$	(746	)	$	(480	)	$	(266	)



	Fair Value Total			Fair Value Measurements at December 31, 2017
				Level 1			Level 2
Assets:
Commodity derivatives:
Natural Gas:
Basis Swaps IFERC/NYMEX	$	11		$	11		$	—
Swing Swaps IFERC	13			—			13
Fixed Swaps/Futures	70			70			—
Forward Physical Contracts	8			—			8
Power – Forwards	23			—			23
NGLs – Forwards/Swaps	191			191			—
Refined Products – Futures	1			1			—
Crude:
Forwards/Swaps	2			2			—
Futures	2			2			—
Total commodity derivatives	321			277			44
Other non-current assets	21			14			7
Total assets	$	342		$	291		$	51
Liabilities:
Interest rate derivatives	$	(219	)	$	—		$	(219	)
Commodity derivatives:
Natural Gas:
Basis Swaps IFERC/NYMEX	(24		)	(24		)	—
Swing Swaps IFERC	(15		)	(1		)	(14		)
Fixed Swaps/Futures	(57		)	(57		)	—
Forward Physical Contracts	(2		)	—			(2		)
Power – Forwards	(22		)	—			(22		)
NGLs – Forwards/Swaps	(186		)	(186		)	—
Refined Products – Futures	(28		)	(28		)	—
Crude:
Forwards/Swaps	(6		)	(6		)	—
Futures	(1		)	(1		)	—
Total commodity derivatives	(341		)	(303		)	(38		)
Total liabilities	$	(560	)	$	(303	)	$	(257	)