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Property And Equipment, Net - Summary Of Property And Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 165,786	$ 80,373
Less: accumulated depreciation	(46,222)	(27,612)
Total property and equipment, net	119,564	52,761
Quantum computing systems [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	43,516	38,374
Satellites [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	54,755	0
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	25,051	17,921
Machinery, equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Gross property and equipment	32,237	16,683
Computer equipment and acquired computer software
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 10,227	$ 7,395

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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