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Share-Based Compensation - Summary of Activity Related to Stock Options (Details) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Number of Stock Options
Beginning Balance, Outstanding (in shares) | shares	6,800
Granted (in shares) | shares	1,800
Exercised (in shares) | shares	(700)
Canceled (in shares) | shares	(200)
Ending Balance, Outstanding (in shares) | shares	7,700
Exercisable (in shares) | shares	5,200
Weighted Average Exercise Price
Beginning Balance, Outstanding (in USD per share) | $ / shares	$ 62.98
Granted (in USD per share) | $ / shares	110.74
Exercised (in USD per share) | $ / shares	28.02
Canceled (in USD per share) | $ / shares	103.30
Ending Balance, Outstanding (in USD per share) | $ / shares	76.38
Exercisable (in USD per share) | $ / shares	$ 63.53
Weighted-Average Remaining Contractual Life and Aggregate Intrinsic Value
Weighted-Average Remaining Contractual Term, Outstanding	6 years 6 months
Weighted-Average Remaining Contractual Term, Exercisable	5 years 6 months
Aggregate Intrinsic Value, Outstanding | $	$ 136.4
Aggregate Intrinsic Value, Exercisable | $	$ 134.7

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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