Stock Based Compensation Plans - Schedule of Share Based Compensation Stock Options (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Share-Based Payment Arrangement [Abstract]
Intrinsic Value of Stock Options Exercised	$ 68.8	$ 10.7
Stock Compensation Expense Related to Stock Option Awards	$ 16.5	$ 14.5
Issued Stock Options	1.0	1.0
Weighted Average Fair Value of Stock Options issued (per share)	$ 29.81	$ 23.93
Fair Value of Stock Options Issued	$ 30.1	$ 23.7

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

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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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The fair value of stock issued in noncash financing activities.

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Amount of noncash expense for option under share-based payment arrangement.

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