Stock And Stock-Based Incentive Plans Stock And Stock-Based Incentive Plans (Settled) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Feb. 29, 2020	Feb. 28, 2019	Feb. 28, 2018
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, Number of Shares	1,601,489	1,745,497	1,955,117
Weighted average grant date fair value per share	$ 22.10	$ 18.75	$ 16.15
Cash received from options exercised (in millions)	$ 124.4	$ 58.1	$ 73.5
Intrinsic value of options exercised (in millions)	78.6	37.1	57.1
Realized tax benefits	$ 21.8	$ 10.2	$ 21.8
Cash-Settled Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units granted, Number of Units	562,321	629,942	628,095
Initial weighted average grant date fair value per share	$ 78.62	$ 63.07	$ 58.39
Payments (before payroll tax withholdings) upon vesting	$ 37.8	$ 21.0	$ 26.6
Realized tax benefits	$ 10.5	$ 5.8	$ 10.2
Stock-Settled Market Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units granted, Number of Units	131,311	205,868	163,618
Initial weighted average grant date fair value per share	$ 98.67	$ 82.09	$ 74.09
Realized tax benefits	$ 4.0	$ 1.4	$ 7.0

Share-based Compensation Arrangement by Share-based Payment Award, Payments Upon Vesting

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Amount of tax benefit from exercise of option under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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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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The weighted average fair value at grant date for nonvested equity-based awards issued 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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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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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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