Inventories (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Inventories
Inventories	$ 354,161,000	$ 634,667,000
Positive exchange balances on inventory exchange agreements accounted for as accounts receivable	188,500,000	120,900,000
Negative exchange balances on inventory exchange agreements accounted for as accounts payable	201,900,000	139,500,000
Distillates: home heating oil, diesel and kerosene
Inventories
Inventories	91,271,000	235,029,000
Gasoline
Inventories
Inventories	76,070,000	144,269,000
Gasoline blendstocks
Inventories
Inventories	77,261,000	139,316,000
Residual oil and crude oil
Inventories
Inventories	100,184,000	109,423,000
Propane and other
Inventories
Inventories	2,568,000
Convenience store inventory
Inventories
Inventories	$ 6,807,000	$ 6,630,000