v3.26.1
Composition of Certain Balance Sheet Captions - Composition of Certain Balance Sheet Captions (Parenthetical) (Detail)
Mar. 31, 2026
Minimum [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 2 years
Minimum [Member] | Equipment and Software [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 3 years
Minimum [Member] | CPE Leased Equipment [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 3 years
Minimum [Member] | Furniture and Fixtures [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 7 years
Minimum [Member] | Leasehold Improvements [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 2 years
Minimum [Member] | Buildings [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 20 years
Minimum [Member] | Satellites [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 7 years
Minimum [Member] | Satellite Ka-band Capacity Obtained under Finance Leases [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 7 years
Maximum [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 38 years
Maximum [Member] | Equipment and Software [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 10 years
Maximum [Member] | CPE Leased Equipment [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 7 years
Maximum [Member] | Furniture and Fixtures [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 10 years
Maximum [Member] | Leasehold Improvements [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 20 years
Maximum [Member] | Buildings [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 38 years
Maximum [Member] | Satellites [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 17 years
Maximum [Member] | Satellite Ka-band Capacity Obtained under Finance Leases [Member]  
Schedule Of Composition Of Certain Balance Sheet Captions [Line Items]  
Property, equipment and satellites, estimated useful life (years) 15 years