Share-Based Compensation Plans - Summary of Shares Available for Issue (Details) - shares	12 Months Ended
Feb. 28, 2021	Aug. 22, 2018
Minimum
Share-based compensation plans
Incremental shares issuable based on achievement of plan target, as a percentage	100.00%
The 2018 Plan
Share-based compensation plans
Shares originally authorized (in shares)		2,000,000
Less share awards issued (in shares)	(10,083)
Plus forfeitures (in shares)	105,611
Less share awards previously vested and settled (in shares)	0
Subtotal (in shares)	2,095,528
Shares available for issuance (in shares)	1,442,149
The 2018 Plan \| Restricted Stock Units (RSU)
Share-based compensation plans
Less awards issuable upon vesting (in shares)	(444,973)
The 2018 Plan \| Performance Stock Awards
Share-based compensation plans
Less awards issuable upon vesting (in shares)	(208,406)
The 2018 Plan \| Performance Stock Awards \| Maximum
Share-based compensation plans
Incremental shares issuable based on achievement of plan target, as a percentage	200.00%

Share-Based Compensation Arrangement By Share-Based Payment Award, Forfeitures In Period

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- Definition

Share-Based Compensation Arrangement by Share Based Payment Award, Maximum Shares Issuable Upon Vesting

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- Definition

Share-Based Compensation Arrangement by Share-Based Payment Award, Vested and Settled

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Share-Based Payment Arrangement by Share-Based Payment Award, Equity Instruments Other Than Options, Incremental Awards Issuable Upon Vesting, Percentage Of Plan Target

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant, Less Options Increase (Decrease)

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Number of shares authorized for issuance under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Number of shares issued under share-based payment arrangement.

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