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Stock And Stock-Based Incentive Plans Stock And Stock-Based Incentive Plans (Settled) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted, Number of Shares	1,607,401	1,601,489	1,745,497
Weighted average grant date fair value per share	$ 22.80	$ 22.10	$ 18.75
Cash received from options exercised (in millions)	$ 143.1	$ 124.4	$ 58.1
Intrinsic value of options exercised (in millions)	94.0	78.6	37.1
Realized tax benefits	$ 25.5	$ 21.8	$ 10.2
Cash-Settled Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units granted, Number of Units	669,937	562,321	629,942
Initial weighted average grant date fair value per share	$ 71.09	$ 78.62	$ 63.07
Payments (before payroll tax withholdings) upon vesting	$ 38.1	$ 37.8	$ 21.0
Realized tax benefits	$ 10.5	$ 10.5	$ 5.8
Stock-Settled Market Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units granted, Number of Units	199,916	131,311	205,868
Initial weighted average grant date fair value per share	$ 93.82	$ 98.67	$ 82.09
Realized tax benefits	$ 3.2	$ 4.0	$ 1.4

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

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