Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities
Net Income	$ 263.0	$ 122.1	$ 144.9
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	49.8	52.8	50.5
Non-cash operating lease expense	34.9	33.8	30.1
Deferred income taxes	(14.1)	(10.2)	(3.7)
Net gains on disposal of assets	(9.4)	(3.0)	(1.5)
Losses on impairment of assets		0.3	0.3
Non-cash pension settlement charge	30.4	27.7
Net income attributable to noncontrolling interests	(0.6)	(0.3)	(0.4)
Changes in assets and liabilities:
Trade receivables	(274.5)	(5.2)	92.2
Merchandise inventory	(187.6)	68.0	4.5
Other current assets	2.5	(4.9)	2.4
Other non-current assets	(2.0)	(1.1)	(1.7)
Trade accounts payable	157.9	48.1	(62.8)
Accrued payroll and benefit costs	64.8	(30.2)	(7.1)
Other current liabilities	32.6	25.1	5.8
Other non-current liabilities	(20.2)	(21.3)	(4.1)
Total adjustments to net income	(135.5)	179.6	104.5
Net cash provided by operating activities	127.5	301.7	249.4
Cash Flows from Investing Activities
Proceeds from disposal of property	9.9	7.9	3.7
Capital expenditures for property	(70.9)	(31.1)	(43.1)
Acquisition of businesses, net of cash acquired	(88.7)	(27.2)
Net cash used by investing activities	(149.7)	(50.4)	(39.4)
Cash Flows from Financing Activities
Net increase (decrease) in short-term borrowings	74.2	(88.0)	(97.0)
Principal payments under finance arrangements	(2.3)	(3.9)	(3.7)
Proceeds from advance payments on common stock prior to issuance	2.1
Payment of deferred financing fees	(2.2)
Sales of common stock	20.5	19.1	18.5
Purchases of common stock	(15.9)	(16.5)	(19.2)
Sales of noncontrolling interests’ common stock	1.1		0.8
Purchases of noncontrolling interests’ common stock	(0.8)	(0.9)	(0.3)
Dividends paid	(137.2)	(90.7)	(107.2)
Net cash used by financing activities	(60.5)	(180.9)	(208.1)
Net (Decrease) Increase in Cash	(82.7)	70.4	1.9
Cash, Beginning of Year	131.2	60.8	58.9
Cash, End of Year	48.5	131.2	60.8
Non-cash Investing and Financing Activities:
Acquisitions of equipment under finance leases	0.4	0.3	2.0
Acquisitions of assets under operating leases	54.7	35.3	55.9
Cash Paid During the Year for:
Interest, net of amounts capitalized	1.0	3.8	6.1
Income taxes, net of refunds	$ 96.7	$ 55.3	$ 60.7