Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities
Net Income	$ 271,324	$ 333,949
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation	17,591	15,292
Amortization	4,201	4,237
Share-based compensation	10,344	9,996
Equity in earnings of unconsolidated investments, net	(117)	(156)
Other	(1,246)	3,563
Changes in operating assets and liabilities, net of effects of acquisitions:
Receivables	(232,647)	(276,945)
Product inventories	66,975	201,380
Prepaid expenses and other assets	38,231	(4,423)
Accounts payable	6,166	76,140
Accrued expenses and other liabilities	(8,720)	13,744
Net Cash Provided by operating activities	172,102	376,777
Investing activities
Acquisition of businesses, net of cash acquired	(4,435)	(11,500)
Purchases of property and equipment, net of sale proceeds	(34,928)	(30,191)
Other Investments	1,018	(169)
Net cash used in investing activities	(38,345)	(41,860)
Financing activities
Proceeds from revolving line of credit	756,300	698,795
Payments on revolving line of credit	(830,400)	(1,001,399)
Proceeds from asset-backed financing	467,000	388,900
Payments on asset-backed financing	(324,000)	(240,200)
Payments on term facility	(12,500)	(47,313)
Proceeds from short-term borrowings and current portion of long-term debt	8,085	17,859
Payments on short-term borrowings and current portion of long-term debt	(1,562)	(19,182)
Payments of deferred and contingent acquisition consideration	0	(551)
Proceeds from stock issued under share-based compensation plans	9,826	7,309
Payments of cash dividends	(88,287)	(82,018)
Repurchases of common stock	(84,496)	(50,742)
Net cash (used in) provided by financing activities	(100,034)	(328,542)
Effect of exchange rate changes on cash and cash equivalents	(3,369)	1,259
Change in cash and cash equivalents	30,354	7,634
Cash and cash equivalents at beginning of period	66,540	45,591
Cash and cash equivalents at end of period	$ 96,894	$ 53,225