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Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended					12 Months Ended
	Mar. 31, 2026	Oct. 31, 2025	Mar. 31, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2026	Mar. 31, 2025
Loss Contingencies [Line Items]
Revenues						$ 1,171,054	$ 1,126,460
Inmarsat [Member]
Loss Contingencies [Line Items]
Contingent legal settlement escalator						3.00%
Scenario Forecast [Member] \| Inmarsat [Member]
Loss Contingencies [Line Items]
Contingent proceeds from legal settlements	$ 100,000	$ 420,000	$ 16,000	$ 16,000	$ 16,000			$ 568,000
Product [Member]
Loss Contingencies [Line Items]
Revenues						$ 344,684	305,739
Product [Member] \| Defense and Advanced Technologies [Member] \| Positive Outcome Of Litigation [Member]
Loss Contingencies [Line Items]
Revenues						30,800	$ 41,700
Unfavorable Regulatory Action [Member]
Loss Contingencies [Line Items]
U.S. government contract-related reserves						$ 15,100			$ 14,800