Nature of Operations and Summary of Siginificant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Loss Contingencies [Line Items]
Deferred Revenue, Revenue Recognized									$ 66,690	$ 72,914
Interest Costs, Capitalized During Period									7,094	6,366
Interest Costs Incurred									144,351	107,956	$ 89,490
Interest Paid, Including Capitalized Interest, Operating and Investing Activities									142,167	108,470	84,696
Income Taxes Paid, Net									271,274	254,661	138,382
Advertising Expense									25,474	21,668	15,599
Proceeds from Income Tax Refunds									19,175	2,315	4,605
Revenue, Remaining Performance Obligation, Amount	$ 1,419,646								1,419,646
Cost of revenues	836,485	$ 737,698	$ 691,976	$ 654,382	$ 734,850	$ 634,244	$ 608,627	$ 577,819	2,920,541	2,555,540	2,340,396
Gross Profit	582,902	560,026	546,228	529,004	546,402	478,187	482,312	473,825	2,218,160	1,980,726	1,883,007
Operating Income (Loss)									836,118	791,101	477,815
Income Tax Expense (Benefit)	37,276	40,999	35,055	36,200	21,203	40,534	35,417	26,915	149,530	124,069	82,344
Income from continuing operations, net of income tax	(1,002)	140,945	116,346	123,790	186,964	123,325	(315,231)	110,755	380,079	105,813	242,870
Net Income (Loss) Attributable to Parent	$ (1,377)	$ 140,743	$ 115,319	$ 123,554	$ 187,225	$ 123,828	$ (315,285)	$ 111,262	$ 378,239	$ 107,030	$ 243,888
Earnings Per Share, Basic	$ (0.01)	$ 1.42	$ 1.17	$ 1.25	$ 1.89	$ 1.24	$ (3.15)	$ 1.11	$ 3.83	$ 1.07	$ 2.50
Earnings Per Share, Diluted	$ (0.01)	$ 1.42	$ 1.16	$ 1.25	$ 1.88	$ 1.24	$ (3.15)	$ 1.10	$ 3.81	$ 1.07	$ 2.48
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									$ 370,292	$ (3,872)	$ 95,323
Inventory, Net	$ 674,535				$ 604,410				674,535	604,410
Retained earnings	$ 2,087,645				$ 1,911,533				2,087,645	1,911,533
Increase (Decrease) in Inventories									37,450	123,921	102,922
Accruals and other, net									39,955	(22,054)	(16,398)
Deferred income taxes									(131,412)	(185,913)	(106,620)
Product [Member]
Loss Contingencies [Line Items]
Cost of revenues									$ 1,516,082	$ 1,271,363	$ 1,191,619
Property, Plant and Equipment, Other Types [Member]
Loss Contingencies [Line Items]
Property, Plant and Equipment, Useful Life	20 years								20 years
Minimum [Member]
Loss Contingencies [Line Items]
Finite-Lived Intangible Assets, Useful Life, Minimum	5 years								5 years
Minimum [Member] | Land Improvements [Member]
Loss Contingencies [Line Items]
Property, Plant and Equipment, Useful Life	3 years								3 years
Minimum [Member] | Building [Member]
Loss Contingencies [Line Items]
Property, Plant and Equipment, Useful Life	2 years								2 years
Minimum [Member] | Machinery and Equipment [Member]
Loss Contingencies [Line Items]
Property, Plant and Equipment, Useful Life	2 years								2 years
Minimum [Member] | Computer Equipment [Member]
Loss Contingencies [Line Items]
Property, Plant and Equipment, Useful Life	2 years								2 years
Maximum [Member]
Loss Contingencies [Line Items]
Finite-Lived Intangible Assets, Useful Life, Minimum	20 years								20 years
Maximum [Member] | Land Improvements [Member]
Loss Contingencies [Line Items]
Property, Plant and Equipment, Useful Life	40 years								40 years
Maximum [Member] | Building [Member]
Loss Contingencies [Line Items]
Property, Plant and Equipment, Useful Life	50 years								50 years
Maximum [Member] | Machinery and Equipment [Member]
Loss Contingencies [Line Items]
Property, Plant and Equipment, Useful Life	20 years								20 years
Maximum [Member] | Computer Equipment [Member]
Loss Contingencies [Line Items]
Property, Plant and Equipment, Useful Life	20 years								20 years
Expected recognition within the next year [Member]
Loss Contingencies [Line Items]
Revenue, Remaining Performance Obligation, Percentage	56.00%								56.00%
Expected recognition beyond the next year [Member] [Member]
Loss Contingencies [Line Items]
Revenue, Remaining Performance Obligation, Percentage	33.00%								33.00%