Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating Revenues
Total operating revenues		$ 6,766.7	$ 4,456.0	$ 11,885.1	$ 7,993.1
Operating Expenses
Depreciation and amortization		54.7	53.3	110.1	104.3
Selling, general and administrative		52.2	48.5	98.4	92.8
Accretion of asset retirement obligations		0.7	0.7	1.4	1.3
Acquisition related costs		0.8	0.2	1.0	9.0
Total operating expenses		6,506.3	4,265.7	11,404.0	7,708.4
Gain (loss) on sale of assets		1.9	(0.1)	1.9	0.1
Income (loss) from operations		262.3	190.2	483.0	284.8
Other income (expense)
Interest income		0.4	0.0	0.4	0.0
Interest expense		(20.2)	(20.4)	(39.8)	(41.7)
Other nonoperating income (expense)		(1.2)	0.2	(1.9)	0.2
Total other income (expense)		(21.0)	(20.2)	(41.3)	(41.5)
Income before income taxes		241.3	170.0	441.7	243.3
Income tax expense (benefit)		58.0	41.2	106.0	59.2
Net Income		$ 183.3	$ 128.8	$ 335.7	$ 184.1
Earnings per common share:
Basic (in dollars per share)		$ 7.65	$ 4.85	$ 13.81	$ 6.82
Diluted (in dollars per share)		$ 7.53	$ 4.79	$ 13.59	$ 6.73
Weighted-Average Common Shares Outstanding (in thousands):
Basic (in shares)		23,952	26,579	24,302	27,002
Diluted (in shares)		24,341	26,917	24,708	27,351
Supplemental information:
Excise taxes		$ 554.7	$ 524.4	$ 1,068.7	$ 994.0
Petroleum product
Operating Revenues
Total operating revenues	[1]	5,690.3	3,404.5	9,838.7	6,040.3
Operating Expenses
Operating expenses	[1]	5,347.8	3,175.2	9,204.0	5,651.3
Merchandise sales
Operating Revenues
Total operating revenues		994.6	963.4	1,886.6	1,796.6
Operating Expenses
Operating expenses		797.9	778.9	1,514.2	1,463.7
Other operating revenues
Operating Revenues
Total operating revenues		81.8	88.1	159.8	156.2
Operating Expenses
Store and other operating expenses		$ 252.2	$ 208.9	$ 474.9	$ 386.0

[1] Includes excise taxes of $554.7 million and $524.4 million for the three months ended June 30, 2022 and 2021, and $1,068.7 million and $994.0 million for the six months ended June 30, 2022 and 2021, respectively.