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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

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- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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- References

No definition available.

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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Capital Stock and Changes in Capital Accounts, Share Repurchases (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2017
Class A [Member]
Share Repurchases [Abstract]
Shares repurchased (in shares)	308,000	1,080,000	1,191,000
Average Price (in dollars per share)	$ 50.93	$ 43.05	$ 50.35
Class B [Member]
Share Repurchases [Abstract]
Shares repurchased (in shares)	2,000	2,000	0
Average Price (in dollars per share)	$ 50.93	$ 43.05	$ 50.35
2017 Share Repurchase Program [Member]
Capital Stock [Abstract]
Additional shares/dollars of common stock approved for repurchase under the share repurchase program (in shares in 2019 and dollars in 2020)				4,000,000
Remaining number of shares/dollars authorized to be repurchased under the share repurchase program in 2017 program (shares) and 2020 program (dollars)	497,197
2020 Share Repurchase Program [Member]
Capital Stock [Abstract]
Amount of additional stock authorized to be repurchased		$ 200
Remaining amount authorized to be repurchased under the share repurchase program	$ 200
Share Repurchases [Abstract]
Shares repurchased (in shares)	0	0