Amount of cost to be recognized for option under share-based payment arrangement.

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+ References

No definition available.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-Section S99
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-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809

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- Definition

Gross Assets Requirement

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- Definition

Share-Based Compensation Arrangements by Share-Based Payment Award, Minimum Share Price

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No definition available.

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Share-Based Compensation - EMI and Articles of Association Narrative (Details) £ / shares in Units, $ / shares in Units, £ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2021 £ / shares	Dec. 31, 2021 USD ($)	Dec. 31, 2018 GBP (£)
Share-based Compensation Arrangement by Share-based Payment Award
Expected term (in years)	6 years
Intrinsic value of options exercised in period	$ 148.0	$ 0.0
Ordinary A
Share-based Compensation Arrangement by Share-based Payment Award
Expected term (in years)	0 years	2 years
Weighted average grant date fair value of options granted (per share) \| $ / shares	$ 9.48	$ 0.02
EMI & Articles of Association
Share-based Compensation Arrangement by Share-based Payment Award
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount		$ 8.6
EMI
Share-based Compensation Arrangement by Share-based Payment Award
Minimum share price (per share) \| £ / shares			£ 0.00001
Gross assets		$ 41.0			£ 30.0
Articles Of Association Plan
Share-based Compensation Arrangement by Share-based Payment Award
Expected term (in years)	10 years
2021 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award
Expected term (in years)	10 years
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount				$ 11.8