v3.26.3
Composition of Certain Balance Sheet Captions - Composition of Certain Balance Sheet Captions (Detail) - USD ($)
$ in Thousands
Sep. 30, 2026
Mar. 31, 2026
Accounts receivable, net:    
Accounts receivable, Billed $ 536,031 $ 539,758
Accounts receivable, Unbilled 209,554 227,840
Allowance for doubtful accounts (10,175) (14,168)
Accounts receivable, net 735,410 753,430
Inventories:    
Raw materials 127,465 108,697
Work in process 30,653 25,054
Finished goods 150,666 147,469
Inventories 308,784 281,220
Prepaid expenses and other current assets:    
Prepaid expenses 172,572 179,081
Other 162,023 163,441
Prepaid expenses and other current assets 334,595 342,522
Property, equipment and satellites, net:    
Property, equipment and satellites, gross 12,439,748 12,283,827
Less: accumulated depreciation and amortization (5,261,396) (5,011,190)
Property and equipment, net 7,178,352 7,272,637
Acquired intangible assets, net:    
Acquired intangible assets, gross 2,878,047 2,879,053
Less: accumulated amortization (1,011,151) (881,617)
Acquired intangible assets, net 1,866,896 1,997,436
Other assets:    
Deferred income taxes 68,350 68,699
Capitalized software costs, net 327,847 316,947
Patents, orbital slots and other licenses, net 113,462 120,194
Other 283,723 273,669
Other assets 793,382 779,509
Accrued and other liabilities:    
Collections in excess of revenues and deferred revenues 356,536 292,592
Accrued employee compensation 108,885 207,741
Operating lease liabilities $ 62,716 $ 60,879
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Accrued and other liabilities Accrued and other liabilities
Interest payable $ 53,106 $ 34,064
Other 380,433 355,916
Accrued and other liabilities 961,676 951,192
Other liabilities:    
Deferred revenues, long-term portion 1,102,228 1,064,261
Deferred income taxes 977,500 1,016,850
Other 250,333 298,190
Other liabilities 2,330,061 2,379,301
Contracts and Customer Relationships [Member]    
Acquired intangible assets, net:    
Acquired intangible assets, gross 1,432,748 1,432,934
Orbital Slots And Spectrum Assets [Member]    
Acquired intangible assets, net:    
Acquired intangible assets, gross 1,088,600 1,088,600
Technology [Member]    
Acquired intangible assets, net:    
Acquired intangible assets, gross 223,735 223,954
Trade Names [Member]    
Acquired intangible assets, net:    
Acquired intangible assets, gross 114,560 114,570
Other [Member]    
Acquired intangible assets, net:    
Acquired intangible assets, gross 18,404 18,995
Equipment and Software [Member]    
Property, equipment and satellites, net:    
Property, equipment and satellites, gross 4,672,152 4,298,300
CPE Leased Equipment [Member]    
Property, equipment and satellites, net:    
Property, equipment and satellites, cost 508,254 522,882
Furniture and Fixtures [Member]    
Property, equipment and satellites, net:    
Property, equipment and satellites, gross 46,279 54,185
Leasehold Improvements [Member]    
Property, equipment and satellites, net:    
Property, equipment and satellites, gross 330,316 325,087
Buildings [Member]    
Property, equipment and satellites, net:    
Property, equipment and satellites, gross 15,062 15,062
Land [Member]    
Property, equipment and satellites, net:    
Property, equipment and satellites, gross 11,251 11,251
Construction in Progress [Member]    
Property, equipment and satellites, net:    
Property, equipment and satellites, gross 502,985 662,841
Satellites [Member]    
Property, equipment and satellites, net:    
Property, equipment and satellites, gross 5,371,396 3,410,741
Satellite Ka-band Capacity Obtained under Finance Leases [Member]    
Property, equipment and satellites, net:    
Property, equipment and satellites, gross 339,428 339,428
Satellites under Construction [Member]    
Property, equipment and satellites, net:    
Property, equipment and satellites, gross $ 642,625 $ 2,644,050