Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash Flows from Operating Activities
Net Income	$ 143.7	$ 71.9	$ 93.3
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	49.6	48.9	47.9
Deferred income taxes	3.4	14.2	19.5
Net gains on disposal of property	0.0	(0.1)	(1.8)
Losses on impairment of property	0.3	0.0	0.0
Net income attributable to noncontrolling interests	(0.4)	(0.3)	(0.2)
Changes in assets and liabilities, net of acquisitions:
Trade receivables	(125.4)	(97.5)	(18.6)
Merchandise inventory	(101.9)	(63.8)	19.7
Other current assets	2.1	(10.9)	6.7
Other non-current assets	(9.0)	(0.5)	(1.5)
Trade accounts payable	59.7	83.3	(25.5)
Accrued payroll and benefit costs	38.8	(2.1)	9.8
Other current liabilities	5.6	13.3	0.7
Other non-current liabilities	(24.4)	(11.3)	(37.8)
Total adjustments to net income	(101.6)	(26.8)	18.9
Net cash provided by operating activities	42.1	45.1	112.2
Cash Flows from Investing Activities
Proceeds from disposal of property	0.7	2.2	4.1
Capital expenditures for property	(43.0)	(41.3)	(35.2)
Acquisition of business, net of cash acquired	0.0	0.0	(59.9)
Net cash used by investing activities	(42.3)	(39.1)	(91.0)
Cash Flows from Financing Activities
Net increase in short-term borrowings	65.4	29.1	35.5
Repayment of long-term debt	0.0	0.0	(1.9)
Principal payments under capital leases	(4.0)	(4.2)	(4.8)
Sales of common stock	17.8	17.4	17.0
Purchases of treasury stock	(15.7)	(13.7)	(11.3)
Sales of noncontrolling interests’ common stock	0.0	0.6	0.0
Purchases of noncontrolling interests’ common stock	(0.3)	(0.3)	(0.4)
Dividends paid	(46.9)	(35.4)	(49.9)
Net cash provided (used) by financing activities	16.3	(6.5)	(15.8)
Net Increase (Decrease) in Cash	16.1	(0.5)	5.4
Cash, Beginning of Year	42.8	43.3	37.9
Cash, End of Year	58.9	42.8	43.3
Non-cash Investing and Financing Activities:
Acquisitions of equipment under capital leases	3.1	1.9	0.4
Acquisition of software and maintenance under financing arrangement	5.0	0.0	0.0
Cash Paid During the Year for:
Interest, net of amounts capitalized	6.3	4.2	3.7
Income taxes, net of refunds	$ 38.3	$ 78.4	$ 36.8