Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income (loss)	$ (1,057,919)	$ 1,090,748	$ (2,483)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	867,641	409,564	407,376
Amortization of intangible assets	289,883	90,813	88,071
Stock-based compensation expense	83,631	84,459	86,808
Satellite impairment and disposition of fixed assets losses, net	975,383	45,892	46,793
Gain on disposition of business prior to costs to sell		(1,702,686)
Deferred income taxes and other non-cash adjustments	(111,077)	380,672	(11,772)
Increase (decrease) in cash resulting from changes in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable	(69,156)	(128,149)	(60,488)
Inventories	(13,387)	(73,135)	(2,300)
Other assets	45,669	1,125	26,854
Accounts payable	(41,499)	35,514	25,444
Accrued liabilities	(141,610)	184,257	(48,827)
Other liabilities	(139,363)	(51,213)	(49,835)
Net cash provided by (used in) operating activities	688,196	367,861	505,641
Cash flows from investing activities:
Purchase of property, equipment and satellites, and other assets	(1,539,385)	(1,164,317)	(990,310)
Payments related to acquisition of businesses, net of cash acquired	(342,621)		(139,533)
Proceeds from insurance claims on satellites	508,560
Proceeds from sale of short-term investments	164,266
Payments to acquire short-term investments	(82,000)
Proceeds from sale of business		1,932,354
Net cash provided by (used in) investing activities	(1,291,180)	768,037	(1,129,843)
Cash flows from financing activities:
Proceeds from debt borrowings	1,736,539	540,000	1,266,000
Payments on debt borrowings	(567,033)	(576,474)	(610,401)
Payment of debt issuance costs	(53,179)	(1,511)	(6,261)
Proceeds from issuance of common stock under equity plans	19,294	21,686	20,549
Purchase of common stock in treasury (immediately retired) related to tax withholdings for stock-based compensation	(11,713)	(16,493)	(22,969)
Repurchase of shares by majority-owned subsidiary		(30,000)
Other financing activities	448	(3,336)	(3,288)
Net cash provided by (used in) financing activities	1,124,356	(66,128)	643,630
Effect of exchange rate changes on cash	275	(843)	(4,918)
Net increase (decrease) in cash and cash equivalents and restricted cash	521,647	1,068,927	14,510
Cash and cash equivalents and restricted cash at beginning of fiscal year	1,379,386	310,459	295,949
Cash and cash equivalents and restricted cash at end of fiscal year	1,901,033	1,379,386	310,459
Supplemental information:
Cash paid for interest (net of amounts capitalized)	228,965	11,000	14,627
Cash paid for income taxes, net	200,561	16,491	17,144
Non-cash investing and financing activities:
Issuance of common stock in satisfaction of certain accrued employee compensation liabilities	31,173	27,619	24,488
Capital expenditures not paid for during the period	4,633	$ 72,630	67,931
RigNet, Inc [Member]
Non-cash investing and financing activities:
Issuance of common stock in connection with acquisition			$ 207,169
Inmarsat Holdings [Member]
Non-cash investing and financing activities:
Issuance of common stock in connection with acquisition	$ 2,123,455