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Variable Interest Entities (Details) - USD ($) $ in Millions		6 Months Ended
	Apr. 19, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Assets
Cash and cash equivalents		$ 3,572		$ 3,313
Property, plant, and equipment, net		30,461		30,389
Liabilities
Current liabilities, including current portion of debt and finance lease obligations		14,214		9,283
Debt and finance lease obligations, less current portion		13,636		13,954
Variable Interest Entity (Textual)
Proceeds from sale of membership interest in unconsolidated joint venture		270	$ 0
MVP Terminalling, LLC (MVP) [Member]
Variable Interest Entity (Textual)
0.2499	24.99%
Proceeds from sale of membership interest in unconsolidated joint venture	$ 270
Membership percentage in VIE (percent)	25.01%
Variable Interest Entity, Primary Beneficiary [Member]
Assets
Cash and cash equivalents		212		161
Other current assets		278		251
Property, plant, and equipment, net		2,470		1,918
Liabilities
Current liabilities, including current portion of debt and finance lease obligations		873		718
Debt and finance lease obligations, less current portion		24		26
Diamond Green Diesel Holdings LLC (DGD) [Member]
Assets
Cash and cash equivalents		196		144
Other current assets		256		219
Property, plant, and equipment, net		1,721		1,232
Liabilities
Current liabilities, including current portion of debt and finance lease obligations		193		90
Debt and finance lease obligations, less current portion		1		1
Central Mexico Terminals [Member]
Assets
Cash and cash equivalents		0		1
Other current assets		7		24
Property, plant, and equipment, net		656		590
Liabilities
Current liabilities, including current portion of debt and finance lease obligations		672		620
Debt and finance lease obligations, less current portion		0		0
Other VIEs [Member]
Assets
Cash and cash equivalents		16		16
Other current assets		15		8
Property, plant, and equipment, net		93		96
Liabilities
Current liabilities, including current portion of debt and finance lease obligations		8		8
Debt and finance lease obligations, less current portion		$ 23		$ 25