Property, Plant, and Equipment (Details) $ in Millions	1 Months Ended		3 Months Ended		12 Months Ended
	Sep. 30, 2021 plant	Sep. 30, 2020 plant	Sep. 30, 2021 plant	Sep. 30, 2020 plant	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) plant	Dec. 31, 2019 USD ($) plant
Property, Plant, and Equipment, Net
Finance lease ROU assets (see Note 6)					$ 2,293	$ 1,902
Property, plant, and equipment, at cost					49,072	46,967
Accumulated depreciation					(18,225)	(16,578)
Property, plant, and equipment, net					30,847	30,389
Property, Plant, and Equipment (Textual)
Depreciation expense					1,700	1,600	$ 1,500
Land [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost					494	485
Crude Oil Processing Facilities [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost					32,744	32,246
Transportation and Terminaling Facilities [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost					5,747	5,290
Waste and Renewable Feedstocks Processing Facilities [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost					1,826	631
Corn Processing Facilities [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost					1,216	1,212
Administrative Buildings [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost					1,055	1,038
Other [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost					1,835	1,764
Construction in Progress [Member]
Property, Plant, and Equipment, Net
Property, plant, and equipment, at cost					1,862	$ 2,399
Ethanol Plants, Jefferson, Wisconsin [Member]
Property, Plant, and Equipment (Textual)
Depreciation expense					$ 48
Number of ethanol plants with reduced estimated useful life | plant	1
Number of ethanol plants temporarily idled | plant						1
Number of ethanol plants that ceased operations | plant			1
Ethanol Plants, Riga, Michigan [Member]
Property, Plant, and Equipment (Textual)
Depreciation expense						$ 30
Number of ethanol plants with reduced estimated useful life | plant		1
Number of ethanol plants temporarily idled | plant							1
Number of ethanol plants that ceased operations | plant				1