Debt and Finance Lease Obligations, Public Debt (Details) - USD ($)	1 Months Ended						2 Months Ended		6 Months Ended	12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Feb. 28, 2022	Nov. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Apr. 30, 2020
Public Debt (Textual)
Gain (loss) on early retirement of debt										$ 14,000,000	$ (193,000,000)	$ 0
Premiums paid										$ 56,000,000	$ 179,000,000	$ 0
Senior Notes [Member]
Debt Purchased and Retired or Redeemed
Debt purchased and retired or redeemed amount	$ 1,250,000,000		$ 1,400,000,000				$ 442,000,000	$ 2,143,000,000
Public Debt (Textual)
Proceeds from issuance of senior long-term debt				$ 1,446,000,000					$ 4,020,000,000.00
Gain (loss) on early retirement of debt								(193,000,000)
Premiums paid								179,000,000
Write-off of unamortized debt discounts and deferred debt costs								10,000,000
Bank fees								$ 4,000,000
Senior Notes [Member] | 2.150% Valero Senior Notes Due September 15, 2027 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)						2.15%	2.15%		2.15%	2.15%
Debt purchased and retired or redeemed amount							$ 22,000,000
Public Debt (Textual)
Face amount of long-term debt issuance						$ 600,000,000			$ 600,000,000
Senior Notes [Member] | 4.500% VLP Senior Notes Due March 15, 2028 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)							4.50%			4.50%
Debt purchased and retired or redeemed amount							$ 26,000,000
Senior Notes [Member] | 2.800% Valero Senior Notes Due in 2031 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)				2.80%			2.80%			2.80%
Debt purchased and retired or redeemed amount							$ 28,000,000
Public Debt (Textual)
Face amount of long-term debt issuance				$ 500,000,000
Senior Notes [Member] | 6.625% Valero Senior Notes Due in 2037 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)							6.625%			6.625%
Debt purchased and retired or redeemed amount							$ 58,000,000
Senior Notes [Member] | 4.90% Valero Senior Notes Due in 2045 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)							4.90%			4.90%
Debt purchased and retired or redeemed amount							$ 24,000,000
Senior Notes [Member] | 3.650% Valero Senior Notes Due in 2051 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)				3.65%			3.65%			3.65%
Debt purchased and retired or redeemed amount							$ 95,000,000
Public Debt (Textual)
Face amount of long-term debt issuance				$ 950,000,000
Senior Notes [Member] | 4.000% Valero Senior Notes Due in 2052 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)			4.00%				4.00%			4.00%
Debt purchased and retired or redeemed amount							$ 97,000,000
Public Debt (Textual)
Face amount of long-term debt issuance			$ 650,000,000
Proceeds from issuance of senior long-term debt			$ 639,000,000
Senior Notes [Member] | 7.45% Valero Senior Notes Due in 2097 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)							7.45%			7.45%
Debt purchased and retired or redeemed amount							$ 30,000,000
Senior Notes [Member] | Various Other Valero Senior Notes [Member]
Debt Purchased and Retired or Redeemed
Debt purchased and retired or redeemed amount							$ 62,000,000
Senior Notes [Member] | 3.65% Valero Senior Notes Due in 2025 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)	3.65%		3.65%				3.65%	3.65%		3.65%	3.65%
Debt purchased and retired or redeemed amount	$ 48,000,000		$ 72,000,000					$ 276,000,000
Senior Notes [Member] | 2.850% Valero Senior Notes Due in 2025 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)	2.85%		2.85%				2.85%			2.85%
Debt purchased and retired or redeemed amount	$ 291,000,000		$ 507,000,000
Senior Notes [Member] | 4.375% VLP Senior Notes Due in 2026 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)	4.375%		4.375%				4.375%	4.375%		4.375%	4.375%
Debt purchased and retired or redeemed amount	$ 62,000,000		$ 168,000,000					$ 124,000,000
Senior Notes [Member] | 3.400% Valero Senior Notes Due in 2026 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)	3.40%		3.40%				3.40%			3.40%
Debt purchased and retired or redeemed amount	$ 166,000,000		$ 653,000,000
Senior Notes [Member] | 4.350% Valero Senior Notes Due in 2028 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)	4.35%						4.35%			4.35%
Debt purchased and retired or redeemed amount	$ 131,000,000
Senior Notes [Member] | 4.000% Valero Senior Notes Due in 2029 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)	4.00%						4.00%			4.00%
Debt purchased and retired or redeemed amount	$ 552,000,000
Senior Notes [Member] | 2.700% Valero Senior Notes Due in 2023 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)								2.70%			2.70%		2.70%
Debt purchased and retired or redeemed amount								$ 850,000,000
Public Debt (Textual)
Face amount of long-term debt issuance													$ 850,000,000
Senior Notes [Member] | 1.200% Valero Senior Notes Due in 2024 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)						1.20%	1.20%	1.20%	1.20%	1.20%	1.20%
Debt purchased and retired or redeemed amount								$ 756,000,000
Public Debt (Textual)
Face amount of long-term debt issuance						$ 925,000,000			$ 925,000,000
Senior Notes [Member] | 10.500% Valero Senior Notes Due in 2039 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)							10.50%	10.50%		10.50%	10.50%
Debt purchased and retired or redeemed amount								$ 137,000,000
Senior Notes [Member] | Floating Rate Senior Notes Due September 15, 2023 [Member]
Debt Purchased and Retired or Redeemed
Debt purchased and retired or redeemed amount					$ 575,000,000
Senior Notes [Member] | Floating Rate Senior Notes Due September 15, 2023 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Public Debt (Textual)
Basis spread on variable rate						1.15%
Senior Notes [Member] | 2.850% Valero Senior Notes Due April 15, 2025, Issued September 2020 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)						2.85%			2.85%
Public Debt (Textual)
Face amount of long-term debt issuance						$ 400,000,000			$ 400,000,000
Senior Notes [Member] | 2.850% Valero Senior Notes Due April 15, 2025, Issued April 2020 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)													2.85%
Public Debt (Textual)
Face amount of long-term debt issuance													$ 650,000,000
Revenue Bonds [Member] | Gulf Opportunity Zone Revenue Bonds, Series 2010, 4.00% Due in 2040 [Member]
Debt Purchased and Retired or Redeemed
Interest rate of notes (percent)		4.00%					4.00%			4.00%
Public Debt (Textual)
Repayments of long-term debt		$ 300,000,000