Earnings before net interest expense, income taxes, depreciation, amortization and accretion, further adjusted to exclude allocated non-cash compensation expense and certain other operating expenses reflected in net income that we do not believe are indicative of ongoing core operations, such as gain or loss on disposal of assets and non-cash impairment charges. Also includes adjustments for unrealized gains and losses on commodity derivatives and inventory fair value adjustments.

No definition available.

Segment Reporting (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
Segment Reporting (Details) - USD ($) $ in Millions	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Interest Expense, including discontinued operations									$ 245	$ 189	$ 88
Retail motor fuel									1,577	1,338	1,540
Wholesale motor fuel sales to third parties									9,278	7,812	10,104
Wholesale motor fuel sales to affiliates									55	62	20
Merchandise	$ 142	$ 151	$ 147	$ 131	$ 133	$ 142	$ 138	$ 128	571	541	544
Rental income									89	88	81
Other									153	145	141
Total revenues	2,959	3,064	2,892	2,808	2,824	2,619	2,563	1,980	11,723	9,986	12,430
Retail motor fuel									157	163	200
Wholesale motor fuel									535	596	384
Merchandise gross profit	45	49	48	43	44	46	46	42	185	178	179
Rental and other									231	219	217
Gross profit	277	316	259	256	296	282	308	270	1,108	1,156	980
Total operating expenses									879	1,011	728
Operating income	65	128	(20)	56	(140)	76	120	89	229	145	252
Interest expense, net									(209)	(161)	(67)
Income (loss) from continuing operations before income taxes									20	(16)	185
Net income (loss) and comprehensive income (loss)	232	$ 138	$ (222)	$ 1	(585)	$ 45	$ 72	$ 62	149	(406)	194
Depreciation, amortization and accretion									169	176	150
Depreciation Amortization and Accretion, including discontinued operations									203	319	278
Interest expense, net									209	161	67
Income tax expense (benefit)									(306)	(72)	29
Income tax expense benefit, including discontinued operations									(258)	(31)	52
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest									326	56	156
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest									(177)	(462)	38
EBITDA									339	71	612
Non-cash compensation expense									24	13	8
Share based compensation, including discontinued operations									24	13	8
Loss on disposal of assets and impairment charges (1)									114	225	1
Gain Loss On Disposition Of Assets And Impairment Charges, including discontinued operations									(400)	(680)	1
Unrealized gain on commodity derivatives									(3)	5	2
Inventory fair value adjustments									(28)	(104)	98
Adjusted EBITDA									732	665	719
Capital expenditures									103	119	178
Payment to acquire property,plant and equipment, including discontinued operations									177	439	491
Total assets	8,344				8,701				8,344	8,701		$ 8,842
Operating Segments [Member] \| Wholesale Segment [Member]
Segment Reporting Information [Line Items]
Interest Expense, including discontinued operations									88	59	55
Retail motor fuel									0	0	0
Wholesale motor fuel sales to third parties									9,278	7,812	10,104
Wholesale motor fuel sales to affiliates									55	62	20
Merchandise									0	0	0
Rental income									77	76	52
Other									50	45	28
Intersegment sales									1,472	1,195	1,407
Total revenues									10,932	9,190	11,611
Retail motor fuel									0	0	0
Wholesale motor fuel									535	596	384
Merchandise gross profit									0	0	0
Rental and other									116	110	74
Gross profit									651	706	458
Total operating expenses									406	390	332
Operating income									245	316	126
Interest expense, net									(88)	(59)	(54)
Income (loss) from continuing operations before income taxes									157	257	72
Net income (loss) and comprehensive income (loss)									167	252	68
Depreciation Amortization and Accretion, including discontinued operations									118	94	68
Interest expense, net									88	59	54
Income tax expense (benefit)									(10)	5	4
Income tax expense benefit, including discontinued operations									(10)	5	4
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest									167	252	68
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest									0	0	0
EBITDA									363	410	195
Share based compensation, including discontinued operations									2	6	4
Gain Loss On Disposition Of Assets And Impairment Charges, including discontinued operations									(8)	3	(1)
Unrealized gain on commodity derivatives									(3)	5	2
Inventory fair value adjustments									(24)	(98)	78
Adjusted EBITDA									346	320	280
Payment to acquire property,plant and equipment, including discontinued operations									71	112	65
Total assets	3,130				3,201				3,130	3,201		2,926
Operating Segments [Member] \| Retail Segment [Member]
Segment Reporting Information [Line Items]
Interest Expense, including discontinued operations									157	130	33
Retail motor fuel									1,577	1,338	1,540
Wholesale motor fuel sales to third parties									0	0	0
Wholesale motor fuel sales to affiliates									0	0	0
Merchandise									571	541	544
Rental income									12	12	29
Other									103	100	113
Intersegment sales									125	133	124
Total revenues									2,388	2,124	2,350
Retail motor fuel									157	163	200
Wholesale motor fuel									0	0	0
Merchandise gross profit									185	178	179
Rental and other									115	109	143
Gross profit									457	450	522
Total operating expenses									473	621	396
Operating income									(16)	(171)	126
Interest expense, net									(121)	(102)	(13)
Income (loss) from continuing operations before income taxes									(137)	(273)	113
Net income (loss) and comprehensive income (loss)									(18)	(658)	126
Depreciation Amortization and Accretion, including discontinued operations									85	225	210
Interest expense, net									121	102	13
Income tax expense (benefit)									(296)	(77)	25
Income tax expense benefit, including discontinued operations									(248)	(36)	48
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest									159	(196)	88
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest									(177)	(462)	38
EBITDA									(24)	(339)	417
Share based compensation, including discontinued operations									22	7	4
Gain Loss On Disposition Of Assets And Impairment Charges, including discontinued operations									(392)	(683)	2
Unrealized gain on commodity derivatives									0	0	0
Inventory fair value adjustments									(4)	(6)	20
Adjusted EBITDA									386	345	439
Payment to acquire property,plant and equipment, including discontinued operations									106	327	426
Total assets	$ 5,214				$ 5,500				5,214	5,500		$ 5,916
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Intersegment sales									(1,597)	(1,328)	(1,531)
Total revenues									$ (1,597)	$ (1,328)	$ (1,531)