Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net income (loss)	$ (21,687)	$ (76,902)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	249,800	132,011
Amortization of intangible assets	81,404	42,568
Stock-based compensation expense	19,182	21,752
Loss on disposition of fixed assets	19,778	9,729
Deferred income taxes and other non-cash adjustments	9,387	(24,203)
Increase (decrease) in cash resulting from changes in operating assets and liabilities, net of effect of acquisition:
Accounts receivable	(26,224)	(739)
Inventories	(11,888)	(34,684)
Other assets	13,581	(39,564)
Accounts payable	(28,529)	41,509
Accrued liabilities	(110,114)	(58,969)
Other liabilities	(43,594)	91,158
Net cash provided by (used in) operating activities	151,096	103,666
Cash flows from investing activities:
Purchase of property, equipment and satellites, and other assets	(301,019)	(374,926)
Proceeds from insurance claims on satellites	79,500
Payment related to acquisition of a business, net of cash acquired		(342,621)
Payments to acquire short-term investments		(52,000)
Net cash provided by (used in) investing activities	(221,519)	(769,547)
Cash flows from financing activities:
Payments on debt borrowings	(19,462)	(18,868)
Proceeds from debt borrowings		1,334,683
Payments of debt issuance costs	(710)	(34,558)
Proceeds from issuance of common stock under equity plans		82
Purchase of common stock in treasury (immediately retired) related to tax withholdings for stock-based compensation	(1,415)	(2,212)
Other financing activities	(866)	(779)
Net cash provided by (used in) financing activities	(22,453)	1,278,348
Effect of exchange rate changes on cash	3,442	617
Net increase (decrease) in cash and cash equivalents and restricted cash	(89,434)	613,084
Cash and cash equivalents and restricted cash at beginning of period	1,901,033	1,379,386
Cash and cash equivalents and restricted cash at end of period	1,811,599	1,992,470
Non-cash investing and financing activities:
Issuance of common stock in satisfaction of certain accrued employee compensation liabilities	28,063	31,173
Right-of-use assets obtained in exchange for operating lease liabilities	$ 3,060	5,241
Debt issuance costs not paid for		6,649
Inmarsat [Member]
Non-cash investing and financing activities:
Issuance of common stock in connection with acquisition		$ 2,123,455