Derivatives (Schedule of Outstanding Derivatives Entered Into to Hedge Inventory or Fixed Price Purchase Commitments) (Details) - 3 months ended Mar. 31, 2024 gal in Thousands, bbl in Thousands, T in Thousands, MMBTU in Thousands	bbl	$ / bbl	MMBTU	$ / MMBTU	T	$ / T	gal	$ / gal
Designated as hedges under accounting rules | Sell (Short) Contracts | Future | Crude Oil
Derivative [Line Items]
Contract volumes (bbls)	437
Weighted average contract price | $ / bbl		78.74
Designated as hedges under accounting rules | Buy (Long) Contracts | Future | Crude Oil
Derivative [Line Items]
Contract volumes (bbls)	175
Weighted average contract price | $ / bbl		80.03
Not qualifying or not designated as hedges under accounting rules | Sell (Short) Contracts | Future | Crude Oil
Derivative [Line Items]
Contract volumes (bbls)	149
Weighted average contract price | $ / bbl		79.99
Not qualifying or not designated as hedges under accounting rules | Sell (Short) Contracts | Future | Natural Gas
Derivative [Line Items]
Contract volumes (bbls)	17
Contract volume (MMBTU) | MMBTU			114
Weighted average contract price		0.31		1.77
Not qualifying or not designated as hedges under accounting rules | Sell (Short) Contracts | Future | Fuel Oil
Derivative [Line Items]
Contract volumes (MT) | T					0
Weighted average contract price (MT) | $ / T						0
Not qualifying or not designated as hedges under accounting rules | Sell (Short) Contracts | Swaps | Natural Gas
Derivative [Line Items]
Contract volume (MMBTU) | MMBTU			0
Weighted average contract price | $ / MMBTU				0
Not qualifying or not designated as hedges under accounting rules | Sell (Short) Contracts | Swaps | Fuel Oil
Derivative [Line Items]
Contract volumes (MT) | T					0
Weighted average contract price (MT) | $ / T						0
Not qualifying or not designated as hedges under accounting rules | Sell (Short) Contracts | Commodity Option | Natural Gas and Natural Gas Liquids
Derivative [Line Items]
Contract volumes (bbls) | gal							0
Weighted average contract price | $ / gal								0
Not qualifying or not designated as hedges under accounting rules | Buy (Long) Contracts | Future | Crude Oil
Derivative [Line Items]
Contract volumes (bbls)	104
Weighted average contract price | $ / bbl		80.82
Not qualifying or not designated as hedges under accounting rules | Buy (Long) Contracts | Future | Natural Gas
Derivative [Line Items]
Contract volumes (bbls)	0
Contract volume (MMBTU) | MMBTU			1,184
Weighted average contract price		0		3.47
Not qualifying or not designated as hedges under accounting rules | Buy (Long) Contracts | Future | Fuel Oil
Derivative [Line Items]
Contract volumes (MT) | T					54,500
Weighted average contract price (MT) | $ / T						538.17
Not qualifying or not designated as hedges under accounting rules | Buy (Long) Contracts | Swaps | Natural Gas
Derivative [Line Items]
Contract volume (MMBTU) | MMBTU			1,074
Weighted average contract price | $ / MMBTU				0.54
Not qualifying or not designated as hedges under accounting rules | Buy (Long) Contracts | Swaps | Fuel Oil
Derivative [Line Items]
Contract volumes (MT) | T					4,500
Weighted average contract price (MT) | $ / T						547.22
Not qualifying or not designated as hedges under accounting rules | Buy (Long) Contracts | Commodity Option | Natural Gas and Natural Gas Liquids
Derivative [Line Items]
Contract volumes (bbls) | gal							2,750
Weighted average contract price | $ / gal								0.35