Redeemable Convertible Preferred Stock and Shareholders’ Equity - Schedule of Redeemable Convertible Preferred Stock (Details) - shares	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)	0	135,000,000	2,046,000,000	1,893,000,000	1,748,000,000	1,748,000,000
Redeemable convertible preferred stock issued (in shares)	0		2,351,000,000
SpaceX Redeemable Convertible Preferred Stock
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			134,700,000
Series A
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			60,400,000
Series A-1
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			200,000
Series B
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			5,100,000
Series B-1
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			100,000
Series C
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			9,700,000
Series D
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			5,200,000
Series E
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			10,200,000
Series F
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			6,700,000
Series G
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			12,600,000
Series H
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			3,200,000
Series I
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			3,000,000.0
Series J
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			2,500,000
Series K
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			2,500,000
Series L
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			1,400,000
Series M
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			2,700,000
Series N
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			9,300,000
xAI Redeemable Convertible Preferred Stock
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			1,911,300,000
Series A
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			750,000,000.0
Redeemable convertible preferred stock issued (in shares)			1,000,000,000
Series A-1
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			0
Series B
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			584,900,000
Series C
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			277,100,000
Series D
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			120,100,000
Redeemable convertible preferred stock issued (in shares)			175,000,000.0
Series E
Temporary Equity [Line Items]
Redeemable convertible preferred stock outstanding (in shares)			179,200,000