Fair Value Measurements - Valuation Assumptions (Details)				9 Months Ended
	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)
Private warrants derivative liability | Exercise price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	230	230	230	230	230
Private warrants derivative liability | Stock price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	5.8	13	90	6.42	13.6
Private warrants derivative liability | Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.999	0.75	0.516	0.999	0.98
Private warrants derivative liability | Term (in years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative, term	3 years 7 months 6 days	4 years 1 month 2 days	4 years 7 months 2 days	3 years 4 months 6 days	4 years 4 months 2 days
Private warrants derivative liability | Risk-free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.045	0.041	0.03	0.047	0.041
Private warrants derivative liability | Dividend yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0	0	0	0	0
Forward share purchase agreements derivative liability | Exercise price one
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input			206.2
Forward share purchase agreements derivative liability | Exercise price three
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input			203.2
Forward share purchase agreements derivative liability | Stock price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input			90
Forward share purchase agreements derivative liability | Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input			0.704
Forward share purchase agreements derivative liability | Term (in years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative, term			1 month 2 days
Forward share purchase agreements derivative liability | Risk-free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input			0.013
Forward share purchase agreements derivative liability | Dividend yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input			0
Escrow shares derivative liability | First stock price trigger
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	270	270	270	270	270
Escrow shares derivative liability | Second stock price trigger
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	310	310	310	310	310
Escrow shares derivative liability | Stock price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	5.8	13	90	6.42	13.6
Escrow shares derivative liability | Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.986	0.86	0.68	0.986	0.79
Escrow shares derivative liability | Term (in years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative, term	1 year 7 months 6 days	2 years 1 month 2 days	2 years 7 months 2 days	1 year 4 months 6 days	2 years 4 months 2 days
Escrow shares derivative liability | Risk-free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.051	0.044	0.03	0.054	0.042
Escrow shares derivative liability | Dividend yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0	0	0	0	0
Stockholder earn-out rights derivative liability | First stock price trigger
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	270	270	270	270	270
Stockholder earn-out rights derivative liability | Second stock price trigger
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	310	310	310	310	310
Stockholder earn-out rights derivative liability | First revenue trigger
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	65,000,000	65,000,000	65,000,000	65,000,000	65,000,000
Stockholder earn-out rights derivative liability | Second revenue trigger
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	101,000,000	101,000,000	101,000,000	101,000,000	101,000,000
Stockholder earn-out rights derivative liability | Stock price
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	5.8	13	90	6.42	13.6
Stockholder earn-out rights derivative liability | 2022 Revenue assumption
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	44,000,000	48,000,000	49,500,000	42,000,000	47,500,000
Stockholder earn-out rights derivative liability | Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.986	0.86	0.68	0.986	0.79
Stockholder earn-out rights derivative liability | Term (in years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative, term	1 year 7 months 6 days	2 years 1 month 2 days	2 years 7 months 2 days	1 year 4 months 6 days	2 years 4 months 2 days
Stockholder earn-out rights derivative liability | Risk-free rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.051	0.044	0.03	0.054	0.042
Stockholder earn-out rights derivative liability | Dividend yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0	0	0	0	0