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Guarantor Subsidiaries (Consolidating Income Statement) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Revenues |  |  |  |  |  |  |  |  |  |  |  |
Petroleum product sales | [1] |  |  |  |  |  |  |  |  | $ 10,304,689 | $ 14,728,527 | $ 15,560,317
Merchandise sales |  |  |  |  |  |  |  |  |  | 2,273,888 | 2,161,378 | 2,159,466
Other operating revenues |  |  |  |  |  |  |  |  |  | 120,834 | 96,109 | 94,298
Total revenues |  | $ 2,928,200 | $ 3,382,500 | $ 3,468,000 | $ 2,920,700 | $ 3,554,000 | $ 4,622,600 | $ 4,693,900 | $ 4,115,500 | 12,699,411 | 16,986,014 | 17,814,081
Costs and operating expenses |  |  |  |  |  |  |  |  |  |  |  |
Petroleum product cost of goods sold | [1] |  |  |  |  |  |  |  |  | 9,794,475 | 14,074,579 | 15,009,955
Merchandise cost of goods sold |  |  |  |  |  |  |  |  |  | 1,946,423 | 1,859,732 | 1,877,630
Station and other operating expenses |  |  |  |  |  |  |  |  |  | 486,383 | 486,762 | 460,476
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 86,568 | 79,087 | 74,053
Selling, general and administrative |  |  |  |  |  |  |  |  |  | 129,277 | 119,266 | 129,431
Accretion of asset retirement obligations |  |  |  |  |  |  |  |  |  | 1,521 | 1,200 | 1,096
Total costs and operating expenses |  |  |  |  |  |  |  |  |  | 12,444,647 | 16,620,626 | 17,552,641
Income from operations |  |  |  |  |  |  |  |  |  | 254,764 | 365,388 | 261,440
Other income (expense) |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  |  | 2,177 | 244 | 1,099
Interest expense |  |  |  |  |  |  |  |  |  | (33,531) | (36,646) | (14,509)
Gain (loss) on sale of assets |  |  |  |  |  |  |  |  |  | (4,658) | 194 | 5,995
Other nonoperating income (expense) |  |  |  |  |  |  |  |  |  | (463) | 10,166 | 169
Total other income (expense) |  |  |  |  |  |  |  |  |  | (36,475) | (26,042) | (7,246)
Income from continuing operations before income taxes |  | 44,500 | 94,100 | 38,800 | 40,900 | 141,800 | 91,000 | 93,900 | 12,600 | 218,289 | 339,346 | 254,194
Income tax expense |  |  |  |  |  |  |  |  |  | 80,698 | 116,386 | 100,059
Income from continuing operations |  | 29,200 | 60,000 | 24,800 | 23,600 | 94,400 | 56,600 | 64,400 | 7,600 | 137,591 | 222,960 | 154,135
Income (loss) from discontinued operations, net of income taxes |  |  |  |  |  |  |  |  |  | 38,749 | 20,903 | 80,898
Equity earnings in affiliates, net of tax |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net Income |  | $ 66,700 | $ 60,500 | $ 26,200 | $ 22,900 | $ 98,400 | $ 62,700 | $ 73,200 | $ 9,600 | 176,340 | 243,863 | 235,033
Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |
Petroleum product sales |  |  |  |  |  |  |  |  |  | (120,166) | (183,131) | (206,435)
Merchandise sales |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other operating revenues |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total revenues |  |  |  |  |  |  |  |  |  | (120,166) | (183,131) | (206,435)
Costs and operating expenses |  |  |  |  |  |  |  |  |  |  |  |
Petroleum product cost of goods sold |  |  |  |  |  |  |  |  |  | (120,166) | (183,131) | (206,435)
Merchandise cost of goods sold |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Station and other operating expenses |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Selling, general and administrative |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Accretion of asset retirement obligations |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total costs and operating expenses |  |  |  |  |  |  |  |  |  | (120,166) | (183,131) | (206,435)
Income from operations |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other income (expense) |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gain (loss) on sale of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other nonoperating income (expense) |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total other income (expense) |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from continuing operations before income taxes |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income tax expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from continuing operations |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income (loss) from discontinued operations, net of income taxes |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Equity earnings in affiliates, net of tax |  |  |  |  |  |  |  |  |  | (92,130) | (440,963) | 0
Net Income |  |  |  |  |  |  |  |  |  | (92,130) | (440,963) | 0
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |
Petroleum product sales |  |  |  |  |  |  |  |  |  | 0 | 0 |
Merchandise sales |  |  |  |  |  |  |  |  |  | 0 | 0 |
Other operating revenues |  |  |  |  |  |  |  |  |  | 0 | 0 |
Total revenues |  |  |  |  |  |  |  |  |  | 0 | 0 |
Costs and operating expenses |  |  |  |  |  |  |  |  |  |  |  |
Petroleum product cost of goods sold |  |  |  |  |  |  |  |  |  | 0 | 0 |
Merchandise cost of goods sold |  |  |  |  |  |  |  |  |  | 0 | 0 |
Station and other operating expenses |  |  |  |  |  |  |  |  |  | 0 | 0 |
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Selling, general and administrative |  |  |  |  |  |  |  |  |  | 0 | 0 |
Accretion of asset retirement obligations |  |  |  |  |  |  |  |  |  | 0 | 0 |
Total costs and operating expenses |  |  |  |  |  |  |  |  |  | 0 | 0 |
Income from operations |  |  |  |  |  |  |  |  |  | 0 | 0 |
Other income (expense) |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  |  | 0 | 0 |
Interest expense |  |  |  |  |  |  |  |  |  | 0 | 0 |
Gain (loss) on sale of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other nonoperating income (expense) |  |  |  |  |  |  |  |  |  | 0 | 0 |
Total other income (expense) |  |  |  |  |  |  |  |  |  | 0 | 0 |
Income from continuing operations before income taxes |  |  |  |  |  |  |  |  |  | 0 | 0 |
Income tax expense |  |  |  |  |  |  |  |  |  | 0 | 0 |
Income from continuing operations |  |  |  |  |  |  |  |  |  | 0 | 0 |
Income (loss) from discontinued operations, net of income taxes |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Equity earnings in affiliates, net of tax |  |  |  |  |  |  |  |  |  | 176,340 | 351,439 | 0
Net Income |  |  |  |  |  |  |  |  |  | 176,340 | 351,439 | 0
Issuer [Member] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |
Petroleum product sales |  |  |  |  |  |  |  |  |  | 10,424,855 | 14,911,658 | 15,766,752
Merchandise sales |  |  |  |  |  |  |  |  |  | 2,273,888 | 2,161,378 | 2,159,466
Other operating revenues |  |  |  |  |  |  |  |  |  | 120,834 | 96,109 | 94,298
Total revenues |  |  |  |  |  |  |  |  |  | 12,819,577 | 17,169,145 | 18,020,516
Costs and operating expenses |  |  |  |  |  |  |  |  |  |  |  |
Petroleum product cost of goods sold |  |  |  |  |  |  |  |  |  | 9,914,641 | 14,257,710 | 15,216,390
Merchandise cost of goods sold |  |  |  |  |  |  |  |  |  | 1,946,423 | 1,859,732 | 1,877,630
Station and other operating expenses |  |  |  |  |  |  |  |  |  | 486,383 | 486,762 | 460,476
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 86,568 | 79,087 | 74,053
Selling, general and administrative |  |  |  |  |  |  |  |  |  | 129,276 | 119,265 | 129,430
Accretion of asset retirement obligations |  |  |  |  |  |  |  |  |  | 1,521 | 1,200 | 1,096
Total costs and operating expenses |  |  |  |  |  |  |  |  |  | 12,564,812 | 16,803,756 | 17,759,075
Income from operations |  |  |  |  |  |  |  |  |  | 254,765 | 365,389 | 261,441
Other income (expense) |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  |  | 2,177 | 244 | 1,099
Interest expense |  |  |  |  |  |  |  |  |  | (33,531) | (36,646) | (14,509)
Gain (loss) on sale of assets |  |  |  |  |  |  |  |  |  | (4,658) | 194 | 5,995
Other nonoperating income (expense) |  |  |  |  |  |  |  |  |  | (463) | 10,166 | 169
Total other income (expense) |  |  |  |  |  |  |  |  |  | (36,475) | (26,042) | (7,246)
Income from continuing operations before income taxes |  |  |  |  |  |  |  |  |  | 218,290 | 339,347 | 254,195
Income tax expense |  |  |  |  |  |  |  |  |  | 80,698 | 116,386 | 100,059
Income from continuing operations |  |  |  |  |  |  |  |  |  | 137,592 | 222,961 | 154,136
Income (loss) from discontinued operations, net of income taxes |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Equity earnings in affiliates, net of tax |  |  |  |  |  |  |  |  |  | (22,731) | 89,524 | 0
Net Income |  |  |  |  |  |  |  |  |  | 114,861 | 312,485 | 154,136
Guarantor Subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |
Petroleum product sales |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Merchandise sales |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other operating revenues |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total revenues |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Costs and operating expenses |  |  |  |  |  |  |  |  |  |  |  |
Petroleum product cost of goods sold |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Merchandise cost of goods sold |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Station and other operating expenses |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Selling, general and administrative |  |  |  |  |  |  |  |  |  | 1 | 1 | 1
Accretion of asset retirement obligations |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total costs and operating expenses |  |  |  |  |  |  |  |  |  | 1 | 1 | 1
Income from operations |  |  |  |  |  |  |  |  |  | (1) | (1) | (1)
Other income (expense) |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gain (loss) on sale of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other nonoperating income (expense) |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total other income (expense) |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from continuing operations before income taxes |  |  |  |  |  |  |  |  |  | (1) | (1) | (1)
Income tax expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from continuing operations |  |  |  |  |  |  |  |  |  | (1) | (1) | (1)
Income (loss) from discontinued operations, net of income taxes |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Equity earnings in affiliates, net of tax |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net Income |  |  |  |  |  |  |  |  |  | (1) | (1) | (1)
Non-Guarantor Subsidiaries [Member] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |
Petroleum product sales |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Merchandise sales |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other operating revenues |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total revenues |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Costs and operating expenses |  |  |  |  |  |  |  |  |  |  |  |
Petroleum product cost of goods sold |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Merchandise cost of goods sold |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Station and other operating expenses |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Selling, general and administrative |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Accretion of asset retirement obligations |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total costs and operating expenses |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from operations |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other income (expense) |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gain (loss) on sale of assets |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other nonoperating income (expense) |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total other income (expense) |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from continuing operations before income taxes |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income tax expense |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income from continuing operations |  |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income (loss) from discontinued operations, net of income taxes |  |  |  |  |  |  |  |  |  | 38,749 | 20,903 | 80,898
Equity earnings in affiliates, net of tax |  |  |  |  |  |  |  |  |  | (61,479) | 0 | 0
Net Income |  |  |  |  |  |  |  |  |  | $ (22,730) | $ 20,903 | $ 80,898
[1] | Includes excise taxes of: $1,968,629, $1,930,608, and $1,884,035.

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