Represents the expected annualized forfeiture rate for options granted.

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

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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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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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Stock Compensation - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Stock compensation
Stock compensation expense	$ 215.9	$ 188.4	$ 183.0
Dividend yield	0.00%
Research and Development Expense
Stock compensation
Stock compensation expense	$ 126.7	112.5	114.3
Selling, General and Administrative Expenses
Stock compensation
Stock compensation expense	86.1	73.2	67.0
Cost of Sales
Stock compensation
Stock compensation expense	$ 3.1	2.7	1.7
Options
Stock compensation
Assumed annualized forfeiture rate	5.00%
Unrecognized compensation cost for nonvested option	$ 30.0
Vesting period of recognition of the unrecognized compensation cost of nonvested awards	1 year 2 months 12 days
Restricted Stock Units (RSUs)
Stock compensation
Assumed annualized forfeiture rate	5.00%
Unrecognized compensation cost for nonvested option	$ 235.4
Vesting period of recognition of the unrecognized compensation cost of nonvested awards	1 year 8 months 12 days
Performance Shares
Stock compensation
Stock compensation expense	$ 17.2	$ 7.8	$ 8.3
Assumed annualized forfeiture rate	5.00%
Unrecognized compensation cost for nonvested option	$ 17.0
Vesting period of recognition of the unrecognized compensation cost of nonvested awards	1 year 10 months 24 days