Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash Flows from Operating Activities
Net Income	$ 464.4	$ 453.7	$ 263.0
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	66.1	53.4	49.8
Non-cash operating lease expense	51.1	39.5	34.9
Deferred income taxes	15.4	(3.0)	(14.1)
Net (gains) losses on disposal of assets	(0.4)	0.4	(9.4)
Losses on impairment of assets	0.4
Non-cash pension settlement charge		27.0	30.4
Earnings on investment in employee deferred compensation trust	(0.9)
Net income attributable to noncontrolling interests	(1.0)	(0.8)	(0.6)
Changes in assets and liabilities:
Trade receivables	115.9	(235.7)	(274.5)
Merchandise inventory	173.1	(201.0)	(187.6)
Other current assets	5.4	(28.6)	2.5
Other non-current assets	1.3	(43.3)	(2.0)
Trade accounts payable	(79.5)	213.6	157.9
Accrued payroll and benefit costs	(32.1)	30.5	64.8
Other current liabilities	(22.3)	50.8	32.6
Other non-current liabilities	(133.8)	(3.6)	(20.2)
Total adjustments to net income	158.7	(100.8)	(135.5)
Net cash provided by operating activities	623.1	352.9	127.5
Cash Flows from Investing Activities
Proceeds from disposal of property	1.1	0.6	9.9
Capital expenditures for property	(82.0)	(67.7)	(70.9)
Amounts attributable to acquisitions	(378.8)	(83.7)	(88.7)
Investment in employee deferred compensation trust	(25.0)
Net cash used by investing activities	(484.7)	(150.8)	(149.7)
Cash Flows from Financing Activities
Net (decrease) increase in short-term borrowings	(31.6)	(92.6)	74.2
Principal payments under finance arrangements	(1.8)	(2.1)	(2.3)
Payment of deferred financing fees			(2.2)
Proceeds from advance payments on common stock prior to issuance	0.8	1.0	2.1
Sales of common stock	22.9	20.4	20.5
Purchases of common stock	(20.3)	(14.7)	(15.9)
Sales of noncontrolling interests’ common stock	1.5		1.1
Purchases of noncontrolling interests’ common stock	(0.3)	(0.4)	(0.8)
Dividends paid	(80.4)	(92.8)	(137.2)
Net cash used by financing activities	(109.2)	(181.2)	(60.5)
Net Increase (Decrease) in Cash	29.2	20.9	(82.7)
Cash, Beginning of Year	69.4	48.5	131.2
Cash, End of Year	98.6	69.4	48.5
Non-cash Investing and Financing Activities:
Acquisitions of equipment under finance leases	1.0	1.5	0.4
Acquisitions of assets under operating leases	92.5	82.1	54.7
Cash Paid During the Year for:
Interest, net of amounts capitalized	2.6	1.6	1.0
Income taxes, net of refunds	$ 142.0	$ 164.9	$ 96.7