Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Mar. 31, 2024	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023
Cash Flows from Operating Activities
Net loss	$ (15,730)	$ (67,534)	$ 2,546	$ (38,698)	$ (111,739)	$ (81,224)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation					199,693	197,469
Amortization					216,420	280,667
Share-based compensation expense					97,752	123,674
Amortization of discount on convertible debt and debt issuance costs					13,256	13,690
Non-cash restructuring charges					4,858	0
Loss on disposal of property, plant and equipment					262	0
Unrealized gains on foreign currency remeasurements and transactions					(3,852)	(945)
Loss (earnings) from equity investments					523	(435)
Deferred income taxes					(140,727)	(121,277)
Loss on debt extinguishment					0	6,835
Increase (decrease) in cash from changes in (net of effect of acquisitions):
Accounts receivable					(52,388)	50,887
Inventories					(21,256)	75,096
Accounts payable					161,366	(78,985)
Contract liabilities					(39,103)	13,177
Income taxes					36,960	18,478
Accrued compensation and benefits					1,835	(54,893)
Other operating assets and liabilities					19,544	10,279
Net cash provided by operating activities					383,404	452,493
Cash Flows from Investing Activities
Additions to property, plant & equipment					(246,909)	(342,999)
Purchases of businesses, net of cash acquired					0	(5,488,556)
Other investing activities					(2,114)	(2,261)
Net cash used in investing activities					(249,023)	(5,833,816)
Cash Flows from Financing Activities
Sale of shares to noncontrolling interests					1,000,000	0
Proceeds from borrowings of revolving credit facilities					18,966	65,000
Payments on existing debt					(165,094)	(1,144,025)
Payments on borrowings under revolving credit facilities					(18,642)	(65,000)
Payments on convertible notes					0	(3,561)
Debt issuance costs					0	(126,516)
Equity issuance costs					(31,840)	(42,000)
Proceeds from exercises of stock options and purchases of stock under employee stock purchase plan					36,097	21,509
Payments in satisfaction of employees' minimum tax obligations					(18,823)	(51,836)
Cash dividends paid					0	(20,700)
Other financing activities					(755)	(866)
Net cash provided by financing activities					819,909	3,682,005
Effect of exchange rate changes on cash, cash equivalents, and restricted cash					603	22,532
Net increase (decrease) in cash, cash equivalents, and restricted cash					954,893	(1,676,786)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period		$ 837,566		$ 2,582,371	837,566	2,582,371	$ 2,582,371
Cash, Cash Equivalents, and Restricted Cash at End of Period	1,792,459		905,585		1,792,459	905,585	837,566
Supplemental Information
Cash paid for interest					224,656	190,672
Cash paid for income taxes					53,803	63,485
Additions to property, plant & equipment included in accounts payable					66,040	45,425
Non-Cash Investing and Financing Activities
Conversion of Series A preferred stock to common stock					445,319	0
Reconciliation of Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Restricted cash, current	894,000				894,000		16,000
Cash and cash equivalents	898,578		884,352		898,578	884,352	821,310
Restricted cash, current	183,611		16,676		183,611	16,676
Restricted cash, non-current	710,270		4,557		710,270	4,557
Total cash, cash equivalents, and restricted cash shown in the Condensed Consolidated Statements of Cash Flows	$ 1,792,459		$ 905,585		1,792,459	905,585	$ 837,566
Series B Preferred Shares
Cash Flows from Financing Activities
Proceeds from issuance of Series B Preferred Shares					0	1,400,000
Term A Loan
Cash Flows from Financing Activities
Proceeds from borrowing of Term Facility					0	850,000
Term B Loan
Cash Flows from Financing Activities
Proceeds from borrowing of Term Facility					$ 0	$ 2,800,000