Operations And Organization Accounting Change (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended			12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019		Jun. 30, 2020	Jun. 30, 2019		Dec. 31, 2019		Dec. 31, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Inventories	$ 1,593			$ 1,593			$ 1,532	[1]	$ 1,372
Current maturities of long-term debt	34			34			26	[1]
Cost of products sold	4,117	$ 10,301	[1]	12,408	$ 19,778	[1]	39,801		41,603
Operating Income (Loss)	1,336	1,820	[1]	1,397	3,685	[1]	7,203		5,403
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	771	1,243	[1]	(165)	2,487	[1]	5,020		3,689
Net income (loss)	672	1,209	[1]	(292)	2,327	[1]	4,825		3,420
Less: Net income attributable to noncontrolling interests	306	317	[1]	185	614	[1]
Comprehensive income (loss)	719	1,210	[1]	(331)	2,336	[1]	4,856		3,377
Inventory valuation adjustments	(90)	(4)	[1]	137	(97)	[1]
Increase (Decrease) in Operating Capital		66		(65)	(213)	[1]	(444)		234
Other current assets	231			231			275	[1]
Property, plant and equipment, net	74,941			74,941			74,193	[1]
Lease, Right of Use Asset, Net	1,112			1,112			964	[1]
Intangible assets, net	6,007			6,007			6,154	[1]
Other non-current assets, net	1,512			1,512			1,571	[1]	$ 1,478
Other non-current liabilities	1,218			1,218			1,162	[1]
Noncontrolling interests	13,077			13,077			12,018	[1]
Operating expenses	770	792	[1]	1,649	1,600	[1]
Depreciation, depletion and amortization	936	$ 785	[1]	1,803	$ 1,559	[1]
Non-current operating lease liabilities	903			903			901	[1]
Long-term debt, less current maturities	51,251			51,251			51,028	[1]
Operating lease current liabilities	54			54			60	[1]
Accrued and other current liabilities	$ 2,738			$ 2,738			$ 3,342	[1]
Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax	$ 0.13	$ 0.33	[1]	$ (0.19)	$ 0.64	[1]	$ 1.34		$ 1.20
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 400	$ 880	[1]	$ (541)	$ 1,696	[1]	$ 3,549		$ 1,706
Assets, Current	5,156			5,156			7,464	[1]	6,445
Assets	95,907			95,907			98,973	[1]	88,413
Partners' Capital	19,815			$ 19,815			21,920	[1]	20,726
Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Inventories							1,935		1,677
Cost of products sold		10,302			19,717		39,727		41,658
Operating Income (Loss)		1,819			3,746		7,277		5,348
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		1,242			2,548		5,094		3,634
Net income (loss)		1,208			2,388		4,899		3,365
Comprehensive income (loss)		1,209			2,397		4,930		3,322
Increase (Decrease) in Operating Capital		$ (67)			$ 274		518		(289)
Other non-current assets, net							$ 1,075		$ 1,006
Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax		$ 0.33			$ 0.66		$ 1.37		$ 1.16
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		$ 879			$ 1,757		$ 3,623		$ 1,651
Assets, Current							7,867		6,750
Assets							98,880		88,246
Partners' Capital							21,827		20,559
Revision of Prior Period, Change in Accounting Principle, Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Inventories							(403)		(305)
Net income (loss)	265
Other non-current assets, net							496
Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax				$ 0.10
Assets, Current							(403)
Assets							93
Partners' Capital							93
Change in Inventory Accounting Policy [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of products sold		(1)			61		74		(55)
Operating Income (Loss)		1			(61)		(74)		55
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest		1			(61)		(74)		55
Net income (loss)		1			(61)		(74)		55
Comprehensive income (loss)		1			(61)		(74)		55
Increase (Decrease) in Operating Capital		$ 1			$ (61)		$ (74)		55
Other non-current assets, net									$ 472
Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax		$ 0			$ (0.02)		$ (0.03)		$ 0.04
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		$ 1			$ (61)		$ (74)		$ 55
Assets, Current									(305)
Assets									167
Partners' Capital									$ 167
NGL sales
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue	1,254	1,996	[1]	$ 2,943	4,398	[1]
Crude sales
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue	1,329	4,346	[1]	4,872	7,871	[1]
Gathering, transportation and other fees
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue	2,137	2,035	[1]	4,522	4,302	[1]
Natural gas sales
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue	514	763	[1]	1,102	1,727	[1]
Other
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue	$ 104	$ 260	[1]	$ 294	$ 497	[1]

[1] *As adjusted. See Note 1.