Business Combination - Schedule Of Business Acquisitions Common Stock Shares Issued (Detail) - shares	Mar. 31, 2026	Dec. 31, 2025
Business Acquisitions Common Stock Shares Issued [Line Items]
Common Stock, Shares, Issued	216,471,927	216,471,927
Churchill Capital Corp X [Member]
Business Acquisitions Common Stock Shares Issued [Line Items]
Common Stock, Shares, Issued	216,471,927
Legacy Infleqtion stockholders \| Churchill Capital Corp X [Member]
Business Acquisitions Common Stock Shares Issued [Line Items]
Common Stock, Shares, Issued	151,804,988
Founder Shares \| Churchill Capital Corp X [Member]
Business Acquisitions Common Stock Shares Issued [Line Items]
Common Stock, Shares, Issued	10,650,000
CCX public stockholders \| Churchill Capital Corp X [Member]
Business Acquisitions Common Stock Shares Issued [Line Items]
Common Stock, Shares, Issued	41,362,179
PIPE Investors \| Churchill Capital Corp X [Member]
Business Acquisitions Common Stock Shares Issued [Line Items]
Common Stock, Shares, Issued	12,654,760