Income Taxes - Components of Net Deferred Tax Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Deferred tax assets:
Net operating loss carryforwards	$ 198,548	$ 71,838
Tax credit carryforwards	141,015	115,418
Capitalized research and development costs	143,581	75,152
Operating lease liabilities	94,360	78,562
Deferred revenue	16,326	24,123
Interest carryforwards	88,269	2,485
Other	184,834	104,883
Valuation allowance	(353,642)	(150,047)
Total deferred tax assets	513,291	322,414
Deferred tax liabilities:
Intangible assets	(683,366)	(99,629)
Property, equipment and satellites	(725,990)	(187,896)
Operating lease assets	(80,258)	(68,150)
Other	(88,357)	(29,004)
Total deferred tax liabilities	(1,577,971)	(384,679)
Net deferred tax liabilities	$ (1,064,680)	$ (62,265)