Schedule of Share Based Compensation Stock Options (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Intrinsic Value of Stock Options Exercised	$ 54.6	$ 47.8	$ 68.9	$ 71.9
Stock Compensation Expense Related to Stock Option Awards	$ 12.7	$ 12.2	$ 15.4	$ 14.5
Issued Stock Options	1.8	1.4	1.8	1.4
Weighted Average Fair Value of Stock Options issued (per share)	$ 12.74	$ 14.94	$ 12.73	$ 14.94
Fair Value of Stock Options Issued	$ 23.1	$ 21.3	$ 23.6	$ 21.3

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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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