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Segment Information - Other Acquired Intangible Assets, Net, Goodwill Included in Segment Assets and Depreciation and Amortization of Acquired Intangible Assets by Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Mar. 31, 2024
Segment Reporting Information [Line Items] |  |  |  |
Other acquired intangible assets, net |  | $ 2,475,492 |  | $ 2,544,467
Goodwill |  | 1,621,473 |  | 1,621,763
Depreciation and amortization of intangible assets |  | 331,204 | $ 174,579 |
Operating Segments [Member] | Communication Services [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Other acquired intangible assets, net |  | 2,475,492 |  | 2,544,315
Goodwill |  | 1,581,631 |  | 1,581,937
Depreciation and amortization of intangible assets |  | 249,133 | 134,783 |
Operating Segments [Member] | Defense and Advanced Technologies [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Other acquired intangible assets, net |  |  |  | 152
Goodwill |  | 39,842 |  | $ 39,826
Depreciation and amortization of intangible assets |  | 15,856 | 11,985 |
Corporate, Non-Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization of intangible assets | [1] | $ 66,215 | $ 27,811 |
[1] | Corporate amounts include the amortization of acquired intangible assets as they are not considered part of management’s evaluation of segment performance.

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