Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating activities
Net Income	$ 471,792	$ 676,600
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation	23,355	23,172
Amortization	6,425	6,523
Share-based compensation	14,592	11,691
Equity in earnings of unconsolidated investments, net	(235)	(226)
Goodwill impairment	550	0
Other	1,157	12,644
Changes in operating assets and liabilities, net of effects of acquisitions:
Receivables	(110,078)	(181,775)
Product inventories	330,850	(223,268)
Prepaid expenses and other assets	(23,431)	(31,171)
Accounts payable	20,667	46,564
Accrued expenses and other liabilities	14,374	(33,284)
Net Cash Provided by operating activities	750,018	307,470
Investing activities
Acquisition of businesses, net of cash acquired	(11,500)	(8,309)
Purchases of property and equipment, net of sale proceeds	(42,958)	(27,965)
Other Investments	(48)	1,760
Net cash used in investing activities	(54,506)	(34,514)
Financing activities
Proceeds from revolving line of credit	1,154,601	1,629,740
Payments on revolving line of credit	(1,497,501)	(1,629,688)
Proceeds from term loan under credit facility	0	250,000
Payments on term loan under credit facility	(6,250)	0
Proceeds from asset-backed financing	465,500	215,000
Payments on asset-backed financing	(422,700)	(130,000)
Payments on term facility	(47,313)	(6,937)
Proceeds from short-term borrowings and current portion of long-term debt	19,428	27,396
Payments on short-term borrowings and current portion of long-term debt	(19,182)	(26,960)
Payments of deferred financing costs	52	0
Payments of deferred and contingent acquisition consideration	(551)	(1,374)
Proceeds from stock issued under share-based compensation plans	9,278	7,201
Payments of cash dividends	(124,983)	(111,572)
Repurchases of common stock	(187,110)	(471,210)
Net cash (used in) provided by financing activities	(656,835)	(248,404)
Effect of exchange rate changes on cash and cash equivalents	952	206
Change in cash and cash equivalents	39,629	24,758
Cash and cash equivalents at beginning of period	45,591	24,321
Cash and cash equivalents at end of period	$ 85,220	$ 49,079