Derivatives (Outstanding Derivatives Entered Into to Hedge Inventory or Fixed Price Purchase Commitments) (Details) - Not qualifying or not designated as hedges under accounting rules bbl in Thousands	12 Months Ended
	Dec. 31, 2022 MMBTU $ / MMBTU $ / bbl $ / units bbl
Sell (Short) Contracts | Futures | Crude Oil
Derivative [Line Items]
Contract volumes (1,000 bbls)	93
Weighted average contract price per bbl (in dollars per barrel) | $ / bbl	78.31
Sell (Short) Contracts | Futures | Natural Gas
Derivative [Line Items]
Weighted average contract price per bbl (in dollars per barrel) | $ / MMBTU	5.27
Contract volumes (1,000 MMBTU) | MMBTU	148,000
Sell (Short) Contracts | Futures | Petroleum Products
Derivative [Line Items]
Contract volumes (1,000 bbls)	25
Weighted average contract price per bbl (in dollars per barrel) | $ / bbl	56.15
Sell (Short) Contracts | Swap | Natural Gas
Derivative [Line Items]
Weighted average contract price per bbl (in dollars per barrel) | $ / bbl	0
Contract volumes (1,000 MMBTU) | MMBTU	0
Sell (Short) Contracts | Options | Natural Gas
Derivative [Line Items]
Contract volumes (1,000 bbls)	191
Weighted average contract price per bbl (in dollars per barrel) | $ / MMBTU	0.70
Buy (Long) Contracts | Futures | Crude Oil
Derivative [Line Items]
Contract volumes (1,000 bbls)	90
Weighted average contract price per bbl (in dollars per barrel) | $ / bbl	76.43
Buy (Long) Contracts | Futures | Natural Gas
Derivative [Line Items]
Weighted average contract price per bbl (in dollars per barrel) | $ / MMBTU	5.36
Contract volumes (1,000 MMBTU) | MMBTU	806,000
Buy (Long) Contracts | Futures | Petroleum Products
Derivative [Line Items]
Contract volumes (1,000 bbls)	0
Weighted average contract price per bbl (in dollars per barrel) | $ / bbl	0
Buy (Long) Contracts | Swap | Natural Gas
Derivative [Line Items]
Weighted average contract price per bbl (in dollars per barrel) | $ / units	0.64
Contract volumes (1,000 MMBTU) | MMBTU	976,500
Buy (Long) Contracts | Options | Natural Gas
Derivative [Line Items]
Contract volumes (1,000 bbls)	34
Weighted average contract price per bbl (in dollars per barrel) | $ / MMBTU	0.03