Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income	$ 250.2	$ 232.6
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	71.4	45.2
Equity-based compensation expense	21.1	15.8
Deferred income taxes	(5.0)	(3.5)
Provision for credit losses	1.7	(1.3)
Other	4.8	2.6
Changes in assets and liabilities:
Accounts receivable	(125.0)	(15.7)
Merchandise inventory	(130.3)	15.4
Other assets	24.3	(35.8)
Accounts payable-trade	87.8	(37.2)
Other liabilities	179.8	126.5
Net cash provided by operating activities	380.8	344.6
Cash flows from investing activities:
Capital expenditures	(41.3)	(20.7)
Acquisitions of businesses, net of cash acquired	0.0	(212.9)
Net cash used in investing activities	(41.3)	(233.6)
Cash flows from financing activities:
Proceeds from borrowings under revolving credit facility	702.3	56.5
Repayments of borrowings under revolving credit facility	(895.2)	0.0
Repayments of long-term debt	(35.5)	(3.7)
Repayments of receivable financing liability	(28.7)	(1.1)
Payments to extinguish long-term debt	0.0	(56.5)
Net change in accounts payable-inventory financing	126.7	(180.3)
Financing payments for revenue generating assets	0.0	(42.9)
Repurchases of common stock	0.0	(358.4)
Proceeds from stock option exercises	8.3	37.7
Payment of incentive compensation plan withholding taxes	(20.4)	(27.8)
Dividend payments	(67.5)	(56.5)
Other	1.9	(10.5)
Net cash used in financing activities	(208.1)	(643.5)
Effect of exchange rate changes on cash and cash equivalents	(2.6)	0.9
Net increase (decrease) in cash and cash equivalents	128.8	(531.6)
Cash and cash equivalents—beginning of period	258.1	1,410.2
Cash and cash equivalents—end of period	386.9	878.6
Supplementary disclosure of cash flow information:
Interest paid	(17.5)	(19.2)
Income taxes paid, net	$ (11.5)	$ (10.1)