Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Retail motor fuel sales	$ 1,115,715	$ 1,367,656
Wholesale motor fuel sales to third parties	1,495,874	2,436,502
Wholesale motor fuel sales to affiliates	7,129	644
Merchandise sales	524,094	483,123
Rental income	22,124	19,782
Other	37,377	34,681
Intersegment sales	0	0
Total revenues	3,202,313	4,342,388
Gross Profit, Motor Fuel - Retail	131,273	109,106
Gross Profit, Motor Fuel - Wholesale	151,159	130,981
Gross Profit, Merchandise	166,379	148,201
Gross Profit, Rental and other	49,932	52,804
Gross profit	498,743	441,092
Total operating expenses	406,933	375,746
Income (loss) from operations	91,810	65,346
Interest expense, net	27,689	7,977
Income (loss) before income taxes	64,121	57,369
Income tax expense (benefit)	2,112	8,063
Net income (loss) and comprehensive income (loss)	62,009	49,306
Depreciation, amortization and accretion	78,066	66,743
EBITDA	169,876	132,089
Non-cash compensation expense	3,184	1,358
Loss (gain) on disposal of assets	1,214	(31)
Unrealized loss (gain) on commodity derivatives	(2,725)	1,406
Inventory fair value adjustments	(12,662)	(6,659)	$ 84,800
Adjusted EBITDA	158,887	128,163
Capital expenditures	96,222	101,032
Total assets at end of period	8,802,642	8,841,819	$ 8,841,819
Operating Segments [Member] | Wholesale Segment [Member]
Segment Reporting Information [Line Items]
Retail motor fuel sales	0	0
Wholesale motor fuel sales to third parties	1,495,874	2,436,502
Wholesale motor fuel sales to affiliates	7,129	644
Merchandise sales	0	0
Rental income	18,720	11,509
Other	5,941	5,612
Intersegment sales	70,901	91,170
Total revenues	1,598,565	2,545,437
Gross Profit, Motor Fuel - Retail	0	0
Gross Profit, Motor Fuel - Wholesale	151,159	130,981
Gross Profit, Merchandise	0	0
Gross Profit, Rental and other	23,367	15,565
Gross profit	174,526	146,546
Total operating expenses	77,127	78,403
Income (loss) from operations	97,399	68,143
Interest expense, net	12,128	1,002
Income (loss) before income taxes	85,271	67,141
Income tax expense (benefit)	(748)	1,041
Net income (loss) and comprehensive income (loss)	86,019	66,100
Depreciation, amortization and accretion	16,853	18,791
EBITDA	114,252	86,934
Non-cash compensation expense	2,369	430
Loss (gain) on disposal of assets	(446)	159
Unrealized loss (gain) on commodity derivatives	(2,725)	1,406
Inventory fair value adjustments	(11,222)	(6,921)
Adjusted EBITDA	102,228	82,008
Capital expenditures	36,629	65,765
Total assets at end of period	2,883,721	2,925,842
Operating Segments [Member] | Retail Segment [Member]
Segment Reporting Information [Line Items]
Retail motor fuel sales	1,115,715	1,367,656
Wholesale motor fuel sales to third parties	0	0
Wholesale motor fuel sales to affiliates	0	0
Merchandise sales	524,094	483,123
Rental income	3,404	8,273
Other	31,436	29,069
Intersegment sales	0	0
Total revenues	1,674,649	1,888,121
Gross Profit, Motor Fuel - Retail	131,273	109,106
Gross Profit, Motor Fuel - Wholesale	0	0
Gross Profit, Merchandise	166,379	148,201
Gross Profit, Rental and other	26,565	37,239
Gross profit	324,217	294,546
Total operating expenses	329,806	297,343
Income (loss) from operations	(5,589)	(2,797)
Interest expense, net	15,561	6,975
Income (loss) before income taxes	(21,150)	(9,772)
Income tax expense (benefit)	2,860	7,022
Net income (loss) and comprehensive income (loss)	(24,010)	(16,794)
Depreciation, amortization and accretion	61,213	47,952
EBITDA	55,624	45,155
Non-cash compensation expense	815	928
Loss (gain) on disposal of assets	1,660	(190)
Unrealized loss (gain) on commodity derivatives	0	0
Inventory fair value adjustments	(1,440)	262
Adjusted EBITDA	56,659	46,155
Capital expenditures	59,593	35,267
Total assets at end of period	5,918,921	5,915,977
Intersegment Eliminations
Segment Reporting Information [Line Items]
Intersegment sales	(70,901)	(91,170)
Total revenues	$ (70,901)	$ (91,170)