Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands		3 Months Ended					6 Months Ended				12 Months Ended
		Jun. 30, 2022	Jun. 30, 2022		Jun. 30, 2021		Jun. 30, 2022		Jun. 30, 2021		Dec. 31, 2021
Operating activities
Net income		$ 157,637			$ 127,909		$ 274,533		$ 277,854
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation							25,629		19,435
Amortization of intangible assets		25,876			11,052		51,930		20,031
Amortization of original issue discount and deferred financing costs							1,287		1,295
Loss on extinguishment of debt		3,743	$ 3,743	[1]	831	[1]	3,743	[1]	831	[1]
Deferred income taxes							(61,625)		7,003
Share-based compensation expense	[2]		7,735		6,973		16,562		12,421
Gain on disposal of assets							(587)		(3,978)
Other noncash (gains) charges							(2,037)		(142)
Net changes in operating assets and liabilities, net of acquisitions:
Accounts receivable							(143,308)		(96,846)
Inventories							(158,232)		(163,820)
Other assets							1,637		(4,172)
Accounts payable							(54,583)		186,041
Accrued wages and employee benefits							(11,876)		2,537
Other accrued liabilities							86,616		38,028
Excess tax benefits from equity awards							(15,996)		(21,525)
Net cash provided by operating activities							13,693		274,993
Investing activities
Proceeds from sale of property and equipment							1,883		74
Proceeds from sale of investment							1,308		4,902
Proceeds from beneficial interests in securitization transactions							1,843		1,363
Contribution to equity method investment							(10,229)		(216)
Expenditures for property and equipment							(46,503)		(54,222)
Acquisition of business, net of cash acquired							(11,421)		(419,017)
Net cash used in investing activities							(63,119)		(467,116)
Financing activities
Proceeds from short-term borrowings							216,681		57,589
Proceeds from long-term borrowings							935,000		50,000
Repayments of short-term borrowings							(208,244)		(73,675)
Repayments of long-term borrowings and finance lease obligations							(538,401)		(53,095)
Payment of contingent acquisition consideration							0		(3,750)
Payment of debt issuance costs							(10,330)		(1,185)
Purchase of additional ownership interest							(375)		(27,164)
Taxes paid related to equity awards							(38,347)		(39,967)
Proceeds from exercise of stock options							10,383		18,567
Net cash provided by (used in) financing activities							366,367		(72,680)
Effect of exchange rate changes on cash and cash equivalents							2,860		(239)
Net increase (decrease) in cash and cash equivalents							319,801		(265,042)
Cash and cash equivalents at beginning of period							147,339		655,128		$ 655,128
Cash and cash equivalents at end of period		$ 467,140	$ 467,140		$ 390,086		$ 467,140		$ 390,086		$ 147,339

[1] Represents the non-cash write-off of original issue discount and deferred financing costs due primarily to a voluntary prepayment of Term Loan debt.

[2] Represents share-based compensation expense to account for stock options, restricted stock, and other stock awards over their respective vesting periods.