Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 788.5	$ 736.8	$ 643.0
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	425.6	267.1	265.6
Equity-based compensation expense	42.5	48.5	40.7
Deferred income taxes	(20.2)	(87.9)	(56.1)
Provision for credit losses	30.9	0.8	0.9
Other	42.1	28.2	10.0
Changes in assets and liabilities:
Accounts receivable	(226.4)	(244.8)	(365.1)
Merchandise inventory	(71.4)	(153.0)	(46.8)
Other assets	18.6	(10.9)	25.2
Accounts payable-trade	253.7	194.1	271.2
Other liabilities	30.4	248.3	117.3
Net cash provided by operating activities	1,314.3	1,027.2	905.9
Cash flows used in investing activities:
Capital expenditures	(158.0)	(236.3)	(86.1)
Acquisition of businesses, net of cash acquired	(43.0)	(95.1)	0.0
Net cash used in investing activities	(201.0)	(331.4)	(86.1)
Cash flows from financing activities:
Proceeds from borrowings under revolving credit facilities	1,024.0	2,445.5	686.7
Repayments of borrowings under revolving credit facilities	(1,075.0)	(2,394.5)	(686.7)
Proceeds from issuance of long-term debt	1,300.0	600.0	0.0
Payments to extinguish long-term debt	(622.5)	(539.0)	0.0
Net change in accounts payable-inventory financing	93.0	(1.3)	(67.4)
Repurchases of common stock	(340.6)	(657.2)	(522.3)
Payment of incentive compensation plan withholding taxes	(22.5)	(21.4)	(33.9)
Dividend payments	(219.6)	(183.4)	(139.4)
Other	2.0	1.5	8.2
Net cash provided by (used in) financing activities	138.8	(749.8)	(754.8)
Effect of exchange rate changes on cash and cash equivalents	4.1	2.2	(3.4)
Net increase (decrease) in cash and cash equivalents	1,256.2	(51.8)	61.6
Cash and cash equivalents – beginning of period	154.0	205.8	144.2
Cash and cash equivalents – end of period	1,410.2	154.0	205.8
Supplementary disclosure of cash flow information:
Interest paid	(139.4)	(154.2)	(148.8)
Income taxes paid, net	$ (245.6)	$ (272.2)	$ (261.2)

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Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.

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