Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating activities
Net Income	$ 486,544	$ 358,350
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation	15,376	13,884
Amortization	4,358	723
Share-based compensation	7,571	7,549
Equity in earnings of unconsolidated investments, net	(136)	(132)
Other	7,185	4,812
Changes in operating assets and liabilities, net of effects of acquisitions:
Receivables	(384,245)	(295,342)
Product inventories	(251,090)	(114,792)
Prepaid expenses and other assets	(20,573)	(16,865)
Accounts payable	208,017	170,368
Accrued expenses and other current liabilities	(44,276)	58,673
Net Cash Provided by operating activities	28,731	187,228
Investing activities
Acquisition of businesses, net of cash acquired	(7,629)	(15,162)
Purchases of property and equipment, net of sale proceeds	(19,802)	(17,333)
Net cash used in investing activities	(27,431)	(32,495)
Financing activities
Proceeds from revolving line of credit	1,122,186	549,008
Payments on revolving line of credit	(1,128,902)	(505,636)
Proceeds from Long-term Lines of Credit	250,000	0
Proceeds from asset-backed financing	215,000	260,000
Payments on asset-backed financing	(50,000)	(290,000)
Payments on term facility	(4,625)	(4,625)
Proceeds from short-term borrowings and current portion of long-term debt	24,767	4,466
Payments on short-term borrowings and current portion of long-term debt	(16,808)	(6,277)
Payments of deferred and contingent acquisition consideration	(1,374)	(362)
Proceeds from stock issued under share-based compensation plans	5,107	7,918
Payments of cash dividends	(72,028)	(55,418)
Purchases of treasury stock	(278,680)	(90,135)
Net cash used in financing activities	64,643	(131,061)
Effect of exchange rate changes on cash and cash equivalents	1,217	665
Change in cash and cash equivalents	67,160	24,337
Cash and cash equivalents at beginning of period	24,321	34,128
Cash and cash equivalents at end of period	$ 91,481	$ 58,465