Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2025	Jul. 31, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	$ 4,567,106	$ 4,097,737
Cost of goods sold (exclusive of depreciation and amortization, shown separately below)	3,454,660	3,142,481
Operating expenses	698,176	609,474
Depreciation and amortization	108,963	94,409
Interest, net	26,850	14,067
Income before income taxes	278,457	237,306
Federal and state income taxes	63,102	57,108
Net income	215,355	180,198
Reportable Segment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	4,567,106	4,097,737
Cost of goods sold (exclusive of depreciation and amortization, shown separately below)	3,454,660	3,142,481
Same-store employee expense	276,234	252,259
Same-store other expense	134,658	124,093
Same-store credit card fees expense	62,562	58,779
Non same-store operating expense	69,243	40,725
Other	155,479	133,618
Operating expenses	698,176	609,474
Depreciation and amortization	108,963	94,409
Interest, net	26,850	14,067
Income before income taxes	278,457	237,306
Federal and state income taxes	63,102	57,108
Net income	215,355	180,198
Reportable Segment | Prepared food & dispensed beverage
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Cost of goods sold (exclusive of depreciation and amortization, shown separately below)	192,451	169,088
Reportable Segment | Grocery & general merchandise
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Cost of goods sold (exclusive of depreciation and amortization, shown separately below)	785,900	690,697
Reportable Segment | Fuel
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Cost of goods sold (exclusive of depreciation and amortization, shown separately below)	2,360,105	2,241,094
Reportable Segment | Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Cost of goods sold (exclusive of depreciation and amortization, shown separately below)	$ 116,204	$ 41,602