Stock Compensation Plans (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Stock Compensation Plans:
Stock compensation expense	$ 208.0	$ 147.0
Stock options
Stock Compensation Plans:
Stock options granted in period (shares)	4,235,700	1,372,400
Award vesting period	3 years
Award expiration period	10 years
Unrecognized compensation cost	$ 643.0
Remaining period over which to recognize unrecognized compensation expense	2 years
Restricted stock
Stock Compensation Plans:
Award vesting period	1 year
Unrecognized compensation cost	$ 0.2
Remaining period over which to recognize unrecognized compensation expense	1 month
Restricted stock units
Stock Compensation Plans:
Awards other than stock options granted in period (shares)	1,514,400	423,600
Award vesting period	3 years
Unrecognized compensation cost	$ 701.0
Remaining period over which to recognize unrecognized compensation expense	2 years

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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